/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-magicseries2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 07:30:17,745 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 07:30:17,808 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 07:30:17,814 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 07:30:17,814 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 07:30:17,846 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 07:30:17,847 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 07:30:17,847 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 07:30:17,848 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 07:30:17,851 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 07:30:17,851 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 07:30:17,851 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 07:30:17,852 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 07:30:17,852 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 07:30:17,852 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 07:30:17,853 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 07:30:17,853 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 07:30:17,853 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 07:30:17,854 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 07:30:17,854 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 07:30:17,855 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 07:30:17,855 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 07:30:17,855 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 07:30:17,855 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 07:30:17,856 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 07:30:17,856 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 07:30:17,856 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 07:30:17,856 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 07:30:17,856 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 07:30:17,857 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 07:30:17,857 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 07:30:17,857 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 07:30:17,857 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 07:30:17,857 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 07:30:17,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 07:30:17,858 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 07:30:17,858 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 07:30:17,859 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 07:30:17,859 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 07:30:17,859 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 07:30:17,859 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 07:30:17,862 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 07:30:17,862 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 07:30:17,862 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 07:30:17,862 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc5 --incremental --print-success --lang smt [2024-11-03 07:30:18,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 07:30:18,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 07:30:18,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 07:30:18,119 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 07:30:18,119 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 07:30:18,120 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-nonlinear/color-magicseries2.c [2024-11-03 07:30:19,546 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 07:30:19,709 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 07:30:19,709 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-nonlinear/color-magicseries2.c [2024-11-03 07:30:19,716 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecd05ed5e/6b1b344ecd74488fadd2b292fe278743/FLAGa2d0676e2 [2024-11-03 07:30:20,115 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecd05ed5e/6b1b344ecd74488fadd2b292fe278743 [2024-11-03 07:30:20,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 07:30:20,118 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 07:30:20,119 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 07:30:20,119 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 07:30:20,126 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 07:30:20,127 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 07:30:20" (1/1) ... [2024-11-03 07:30:20,128 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@86b5c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:30:20, skipping insertion in model container [2024-11-03 07:30:20,128 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 07:30:20" (1/1) ... [2024-11-03 07:30:20,145 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 07:30:20,307 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-nonlinear/color-magicseries2.c[613,626] [2024-11-03 07:30:20,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 07:30:20,338 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 07:30:20,348 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-nonlinear/color-magicseries2.c[613,626] [2024-11-03 07:30:20,359 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 07:30:20,378 INFO L204 MainTranslator]: Completed translation [2024-11-03 07:30:20,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:30:20 WrapperNode [2024-11-03 07:30:20,379 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 07:30:20,380 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 07:30:20,380 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 07:30:20,381 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 07:30:20,389 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:30:20" (1/1) ... [2024-11-03 07:30:20,397 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:30:20" (1/1) ... [2024-11-03 07:30:20,414 INFO L138 Inliner]: procedures = 20, calls = 24, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 132 [2024-11-03 07:30:20,415 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 07:30:20,415 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 07:30:20,415 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 07:30:20,416 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 07:30:20,429 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:30:20" (1/1) ... [2024-11-03 07:30:20,429 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:30:20" (1/1) ... [2024-11-03 07:30:20,432 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:30:20" (1/1) ... [2024-11-03 07:30:20,453 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 07:30:20,453 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:30:20" (1/1) ... [2024-11-03 07:30:20,453 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:30:20" (1/1) ... [2024-11-03 07:30:20,460 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:30:20" (1/1) ... [2024-11-03 07:30:20,472 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:30:20" (1/1) ... [2024-11-03 07:30:20,473 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:30:20" (1/1) ... [2024-11-03 07:30:20,474 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:30:20" (1/1) ... [2024-11-03 07:30:20,477 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 07:30:20,478 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 07:30:20,478 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 07:30:20,478 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 07:30:20,479 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:30:20" (1/1) ... [2024-11-03 07:30:20,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 07:30:20,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 07:30:20,504 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 07:30:20,508 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 07:30:20,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 07:30:20,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 07:30:20,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-03 07:30:20,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-03 07:30:20,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-03 07:30:20,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-03 07:30:20,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-03 07:30:20,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-03 07:30:20,529 INFO L130 BoogieDeclarations]: Found specification of procedure check_domain [2024-11-03 07:30:20,529 INFO L138 BoogieDeclarations]: Found implementation of procedure check_domain [2024-11-03 07:30:20,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 07:30:20,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 07:30:20,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-03 07:30:20,597 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 07:30:20,599 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 07:30:20,848 INFO L? ?]: Removed 45 outVars from TransFormulas that were not future-live. [2024-11-03 07:30:20,848 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 07:30:20,865 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 07:30:20,865 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-03 07:30:20,866 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 07:30:20 BoogieIcfgContainer [2024-11-03 07:30:20,866 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 07:30:20,868 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 07:30:20,868 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 07:30:20,871 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 07:30:20,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 07:30:20" (1/3) ... [2024-11-03 07:30:20,872 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa2bb13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 07:30:20, skipping insertion in model container [2024-11-03 07:30:20,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:30:20" (2/3) ... [2024-11-03 07:30:20,873 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa2bb13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 07:30:20, skipping insertion in model container [2024-11-03 07:30:20,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 07:30:20" (3/3) ... [2024-11-03 07:30:20,874 INFO L112 eAbstractionObserver]: Analyzing ICFG color-magicseries2.c [2024-11-03 07:30:20,888 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 07:30:20,888 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 07:30:20,943 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 07:30:20,948 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;@47c24fc3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 07:30:20,948 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 07:30:20,951 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 32 states have (on average 1.46875) internal successors, (47), 33 states have internal predecessors, (47), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 07:30:20,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-03 07:30:20,957 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:30:20,957 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 07:30:20,957 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:30:20,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:30:20,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1909413201, now seen corresponding path program 1 times [2024-11-03 07:30:20,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:30:20,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999831786] [2024-11-03 07:30:20,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:30:20,971 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:30:20,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:30:20,974 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 07:30:20,976 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 07:30:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:30:21,064 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-03 07:30:21,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:30:21,161 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 07:30:21,162 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:30:21,233 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 07:30:21,234 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:30:21,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999831786] [2024-11-03 07:30:21,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1999831786] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 07:30:21,237 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 07:30:21,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 6 [2024-11-03 07:30:21,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722980864] [2024-11-03 07:30:21,240 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 07:30:21,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 07:30:21,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:30:21,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 07:30:21,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-03 07:30:21,272 INFO L87 Difference]: Start difference. First operand has 39 states, 32 states have (on average 1.46875) internal successors, (47), 33 states have internal predecessors, (47), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 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 07:30:21,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:30:21,325 INFO L93 Difference]: Finished difference Result 61 states and 88 transitions. [2024-11-03 07:30:21,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 07:30:21,328 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 07:30:21,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:30:21,335 INFO L225 Difference]: With dead ends: 61 [2024-11-03 07:30:21,336 INFO L226 Difference]: Without dead ends: 37 [2024-11-03 07:30:21,338 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 07:30:21,342 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 192 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 07:30:21,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 192 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 07:30:21,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-03 07:30:21,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2024-11-03 07:30:21,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 states have internal predecessors, (38), 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 07:30:21,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2024-11-03 07:30:21,376 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 46 transitions. Word has length 17 [2024-11-03 07:30:21,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:30:21,376 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 46 transitions. [2024-11-03 07:30:21,377 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 07:30:21,377 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2024-11-03 07:30:21,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-03 07:30:21,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:30:21,379 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 07:30:21,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2024-11-03 07:30:21,579 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 07:30:21,580 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:30:21,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:30:21,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1773066496, now seen corresponding path program 1 times [2024-11-03 07:30:21,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:30:21,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810127337] [2024-11-03 07:30:21,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:30:21,581 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:30:21,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:30:21,584 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 07:30:21,586 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 07:30:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:30:21,649 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 07:30:21,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:30:21,660 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 07:30:21,661 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:30:21,672 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 07:30:21,672 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:30:21,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810127337] [2024-11-03 07:30:21,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [810127337] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 07:30:21,673 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 07:30:21,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 07:30:21,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525820173] [2024-11-03 07:30:21,674 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 07:30:21,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 07:30:21,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:30:21,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 07:30:21,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 07:30:21,676 INFO L87 Difference]: Start difference. First operand 35 states and 46 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-03 07:30:21,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:30:21,700 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2024-11-03 07:30:21,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 07:30:21,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2024-11-03 07:30:21,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:30:21,702 INFO L225 Difference]: With dead ends: 51 [2024-11-03 07:30:21,702 INFO L226 Difference]: Without dead ends: 35 [2024-11-03 07:30:21,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 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 07:30:21,705 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 85 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 07:30:21,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 85 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 07:30:21,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-03 07:30:21,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-03 07:30:21,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 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 07:30:21,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2024-11-03 07:30:21,713 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 45 transitions. Word has length 19 [2024-11-03 07:30:21,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:30:21,714 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 45 transitions. [2024-11-03 07:30:21,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-03 07:30:21,714 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions. [2024-11-03 07:30:21,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-03 07:30:21,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:30:21,715 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] [2024-11-03 07:30:21,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0 [2024-11-03 07:30:21,916 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 07:30:21,916 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:30:21,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:30:21,917 INFO L85 PathProgramCache]: Analyzing trace with hash 2089974584, now seen corresponding path program 1 times [2024-11-03 07:30:21,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:30:21,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46929444] [2024-11-03 07:30:21,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:30:21,918 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:30:21,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:30:21,921 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 07:30:21,922 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 07:30:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:30:22,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 07:30:22,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:30:22,021 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 07:30:22,021 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:30:22,039 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 07:30:22,039 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:30:22,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46929444] [2024-11-03 07:30:22,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [46929444] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 07:30:22,040 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 07:30:22,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 07:30:22,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356848557] [2024-11-03 07:30:22,041 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 07:30:22,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 07:30:22,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:30:22,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 07:30:22,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 07:30:22,043 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-03 07:30:22,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:30:22,070 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2024-11-03 07:30:22,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 07:30:22,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2024-11-03 07:30:22,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:30:22,072 INFO L225 Difference]: With dead ends: 40 [2024-11-03 07:30:22,072 INFO L226 Difference]: Without dead ends: 35 [2024-11-03 07:30:22,072 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 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 07:30:22,073 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 83 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 07:30:22,074 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 83 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 07:30:22,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-03 07:30:22,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-03 07:30:22,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 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 07:30:22,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2024-11-03 07:30:22,082 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 25 [2024-11-03 07:30:22,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:30:22,082 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2024-11-03 07:30:22,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-03 07:30:22,084 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2024-11-03 07:30:22,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-03 07:30:22,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:30:22,085 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, 1] [2024-11-03 07:30:22,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2024-11-03 07:30:22,288 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 07:30:22,289 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:30:22,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:30:22,289 INFO L85 PathProgramCache]: Analyzing trace with hash 848015028, now seen corresponding path program 1 times [2024-11-03 07:30:22,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:30:22,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869942125] [2024-11-03 07:30:22,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:30:22,290 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:30:22,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:30:22,293 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 07:30:22,294 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 07:30:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:30:22,365 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 07:30:22,367 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:30:22,387 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 07:30:22,387 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:30:22,409 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 07:30:22,410 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:30:22,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869942125] [2024-11-03 07:30:22,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [869942125] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 07:30:22,410 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 07:30:22,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2024-11-03 07:30:22,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458313277] [2024-11-03 07:30:22,411 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 07:30:22,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 07:30:22,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:30:22,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 07:30:22,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-03 07:30:22,412 INFO L87 Difference]: Start difference. First operand 35 states and 44 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, (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 07:30:22,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:30:22,440 INFO L93 Difference]: Finished difference Result 59 states and 72 transitions. [2024-11-03 07:30:22,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 07:30:22,441 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, (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 28 [2024-11-03 07:30:22,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:30:22,441 INFO L225 Difference]: With dead ends: 59 [2024-11-03 07:30:22,442 INFO L226 Difference]: Without dead ends: 35 [2024-11-03 07:30:22,442 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 52 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 07:30:22,443 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 117 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 07:30:22,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 117 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 07:30:22,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-03 07:30:22,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-03 07:30:22,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 states have internal predecessors, (35), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 07:30:22,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2024-11-03 07:30:22,448 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 28 [2024-11-03 07:30:22,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:30:22,448 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2024-11-03 07:30:22,449 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, (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 07:30:22,449 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2024-11-03 07:30:22,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-03 07:30:22,449 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:30:22,450 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, 1] [2024-11-03 07:30:22,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2024-11-03 07:30:22,650 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 07:30:22,651 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:30:22,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:30:22,651 INFO L85 PathProgramCache]: Analyzing trace with hash -794790111, now seen corresponding path program 1 times [2024-11-03 07:30:22,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:30:22,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128873084] [2024-11-03 07:30:22,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:30:22,652 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:30:22,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:30:22,653 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 07:30:22,654 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 07:30:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:30:22,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 07:30:22,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:30:22,737 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 07:30:22,737 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:30:22,755 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 07:30:22,755 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:30:22,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128873084] [2024-11-03 07:30:22,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2128873084] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 07:30:22,758 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 07:30:22,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2024-11-03 07:30:22,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748407311] [2024-11-03 07:30:22,759 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 07:30:22,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 07:30:22,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:30:22,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 07:30:22,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-03 07:30:22,760 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 07:30:22,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:30:22,799 INFO L93 Difference]: Finished difference Result 63 states and 76 transitions. [2024-11-03 07:30:22,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 07:30:22,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 34 [2024-11-03 07:30:22,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:30:22,801 INFO L225 Difference]: With dead ends: 63 [2024-11-03 07:30:22,801 INFO L226 Difference]: Without dead ends: 35 [2024-11-03 07:30:22,801 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 64 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 07:30:22,802 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 113 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 07:30:22,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 113 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 07:30:22,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-03 07:30:22,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-03 07:30:22,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 07:30:22,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2024-11-03 07:30:22,811 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 34 [2024-11-03 07:30:22,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:30:22,811 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2024-11-03 07:30:22,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 07:30:22,811 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2024-11-03 07:30:22,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-03 07:30:22,813 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:30:22,813 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 07:30:22,817 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 07:30:23,014 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 07:30:23,015 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:30:23,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:30:23,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1611689165, now seen corresponding path program 1 times [2024-11-03 07:30:23,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:30:23,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804370043] [2024-11-03 07:30:23,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:30:23,016 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:30:23,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:30:23,017 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 07:30:23,018 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 07:30:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:30:23,091 WARN L253 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-03 07:30:23,096 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:30:23,172 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 07:30:23,185 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 07:30:23,186 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:30:23,316 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 07:30:23,317 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:30:23,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804370043] [2024-11-03 07:30:23,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1804370043] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 07:30:23,326 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 07:30:23,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 5 [2024-11-03 07:30:23,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500662819] [2024-11-03 07:30:23,327 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 07:30:23,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-03 07:30:23,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:30:23,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-03 07:30:23,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-03 07:30:23,328 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 07:30:23,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:30:23,368 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2024-11-03 07:30:23,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 07:30:23,369 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 40 [2024-11-03 07:30:23,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:30:23,370 INFO L225 Difference]: With dead ends: 54 [2024-11-03 07:30:23,370 INFO L226 Difference]: Without dead ends: 47 [2024-11-03 07:30:23,370 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 75 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 07:30:23,371 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 18 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 133 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 07:30:23,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 133 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 07:30:23,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-03 07:30:23,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2024-11-03 07:30:23,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 states have internal predecessors, (45), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 07:30:23,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2024-11-03 07:30:23,377 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 40 [2024-11-03 07:30:23,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:30:23,377 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2024-11-03 07:30:23,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 07:30:23,377 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2024-11-03 07:30:23,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-03 07:30:23,379 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:30:23,379 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 07:30:23,382 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 07:30:23,579 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 07:30:23,580 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:30:23,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:30:23,580 INFO L85 PathProgramCache]: Analyzing trace with hash 35157834, now seen corresponding path program 1 times [2024-11-03 07:30:23,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:30:23,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323223020] [2024-11-03 07:30:23,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:30:23,581 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:30:23,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:30:23,582 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 07:30:23,583 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 07:30:23,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:30:23,658 WARN L253 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-03 07:30:23,664 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:30:23,721 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 07:30:23,749 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 07:30:23,750 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:30:23,867 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 07:30:23,867 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:30:23,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323223020] [2024-11-03 07:30:23,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1323223020] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 07:30:23,868 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 07:30:23,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 3] imperfect sequences [] total 6 [2024-11-03 07:30:23,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626331927] [2024-11-03 07:30:23,868 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 07:30:23,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 07:30:23,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:30:23,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 07:30:23,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-03 07:30:23,869 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 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 07:30:23,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:30:23,940 INFO L93 Difference]: Finished difference Result 68 states and 89 transitions. [2024-11-03 07:30:23,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-03 07:30:23,940 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 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 42 [2024-11-03 07:30:23,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:30:23,941 INFO L225 Difference]: With dead ends: 68 [2024-11-03 07:30:23,941 INFO L226 Difference]: Without dead ends: 50 [2024-11-03 07:30:23,941 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 78 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 07:30:23,942 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 21 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 07:30:23,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 130 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 07:30:23,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-03 07:30:23,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2024-11-03 07:30:23,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 42 states have internal predecessors, (51), 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 07:30:23,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2024-11-03 07:30:23,949 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 59 transitions. Word has length 42 [2024-11-03 07:30:23,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:30:23,950 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 59 transitions. [2024-11-03 07:30:23,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 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 07:30:23,950 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2024-11-03 07:30:23,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-03 07:30:23,951 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:30:23,951 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, 1] [2024-11-03 07:30:23,955 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 07:30:24,154 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 07:30:24,155 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:30:24,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:30:24,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1635340726, now seen corresponding path program 1 times [2024-11-03 07:30:24,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:30:24,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554240291] [2024-11-03 07:30:24,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:30:24,156 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:30:24,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:30:24,159 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 07:30:24,160 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 07:30:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:30:24,252 WARN L253 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-03 07:30:24,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:30:25,250 INFO L349 Elim1Store]: treesize reduction 88, result has 33.8 percent of original size [2024-11-03 07:30:25,251 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 07:30:26,189 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 07:30:26,189 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:30:26,506 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 07:30:26,506 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:30:26,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1554240291] [2024-11-03 07:30:26,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1554240291] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 07:30:26,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 07:30:26,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 19 [2024-11-03 07:30:26,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744199065] [2024-11-03 07:30:26,507 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 07:30:26,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-03 07:30:26,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:30:26,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-03 07:30:26,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2024-11-03 07:30:26,509 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 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 07:30:28,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:30:28,113 INFO L93 Difference]: Finished difference Result 99 states and 129 transitions. [2024-11-03 07:30:28,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-03 07:30:28,113 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 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 48 [2024-11-03 07:30:28,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:30:28,114 INFO L225 Difference]: With dead ends: 99 [2024-11-03 07:30:28,115 INFO L226 Difference]: Without dead ends: 80 [2024-11-03 07:30:28,115 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 78 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 07:30:28,116 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 143 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 07:30:28,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 303 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 07:30:28,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-03 07:30:28,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 66. [2024-11-03 07:30:28,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 60 states have (on average 1.25) internal successors, (75), 60 states have internal predecessors, (75), 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 07:30:28,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 83 transitions. [2024-11-03 07:30:28,136 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 83 transitions. Word has length 48 [2024-11-03 07:30:28,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:30:28,137 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 83 transitions. [2024-11-03 07:30:28,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 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 07:30:28,137 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 83 transitions. [2024-11-03 07:30:28,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-03 07:30:28,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:30:28,138 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, 1] [2024-11-03 07:30:28,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2024-11-03 07:30:28,343 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 07:30:28,343 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:30:28,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:30:28,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1609769262, now seen corresponding path program 1 times [2024-11-03 07:30:28,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:30:28,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576401914] [2024-11-03 07:30:28,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:30:28,344 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:30:28,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:30:28,345 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 07:30:28,346 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 07:30:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:30:28,433 WARN L253 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-03 07:30:28,443 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:30:28,479 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 07:30:28,628 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 07:30:28,629 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:30:28,772 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 07:30:28,772 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:30:28,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576401914] [2024-11-03 07:30:28,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1576401914] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 07:30:28,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 07:30:28,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13 [2024-11-03 07:30:28,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641934854] [2024-11-03 07:30:28,773 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 07:30:28,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-03 07:30:28,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:30:28,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-03 07:30:28,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-11-03 07:30:28,774 INFO L87 Difference]: Start difference. First operand 66 states and 83 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 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 07:30:29,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:30:29,074 INFO L93 Difference]: Finished difference Result 105 states and 136 transitions. [2024-11-03 07:30:29,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-03 07:30:29,075 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 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 51 [2024-11-03 07:30:29,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:30:29,076 INFO L225 Difference]: With dead ends: 105 [2024-11-03 07:30:29,076 INFO L226 Difference]: Without dead ends: 80 [2024-11-03 07:30:29,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 89 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 07:30:29,078 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 57 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 07:30:29,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 284 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 07:30:29,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-03 07:30:29,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 63. [2024-11-03 07:30:29,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 57 states have internal predecessors, (71), 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 07:30:29,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 79 transitions. [2024-11-03 07:30:29,098 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 79 transitions. Word has length 51 [2024-11-03 07:30:29,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:30:29,098 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 79 transitions. [2024-11-03 07:30:29,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 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 07:30:29,098 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 79 transitions. [2024-11-03 07:30:29,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-03 07:30:29,099 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:30:29,100 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, 1] [2024-11-03 07:30:29,103 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 07:30:29,300 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 07:30:29,300 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:30:29,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:30:29,301 INFO L85 PathProgramCache]: Analyzing trace with hash 657433930, now seen corresponding path program 2 times [2024-11-03 07:30:29,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:30:29,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741132527] [2024-11-03 07:30:29,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:30:29,301 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:30:29,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:30:29,303 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 07:30:29,304 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 07:30:29,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:30:29,385 WARN L253 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-11-03 07:30:29,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:30:30,458 INFO L349 Elim1Store]: treesize reduction 88, result has 33.8 percent of original size [2024-11-03 07:30:30,459 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 07:30:32,127 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-03 07:30:32,128 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:30:32,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2024-11-03 07:30:32,932 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 07:30:32,932 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:30:32,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741132527] [2024-11-03 07:30:32,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1741132527] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 07:30:32,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 07:30:32,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [13] total 27 [2024-11-03 07:30:32,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262759883] [2024-11-03 07:30:32,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 07:30:32,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-03 07:30:32,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:30:32,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-03 07:30:32,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2024-11-03 07:30:32,934 INFO L87 Difference]: Start difference. First operand 63 states and 79 transitions. Second operand has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 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 07:30:33,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:30:33,990 INFO L93 Difference]: Finished difference Result 106 states and 134 transitions. [2024-11-03 07:30:33,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-03 07:30:33,991 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 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 54 [2024-11-03 07:30:33,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:30:33,992 INFO L225 Difference]: With dead ends: 106 [2024-11-03 07:30:33,992 INFO L226 Difference]: Without dead ends: 75 [2024-11-03 07:30:33,993 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=327, Invalid=1079, Unknown=0, NotChecked=0, Total=1406 [2024-11-03 07:30:33,993 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 21 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 07:30:33,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 206 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 07:30:33,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-03 07:30:34,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2024-11-03 07:30:34,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 66 states have (on average 1.2424242424242424) internal successors, (82), 66 states have internal predecessors, (82), 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 07:30:34,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 90 transitions. [2024-11-03 07:30:34,014 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 90 transitions. Word has length 54 [2024-11-03 07:30:34,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:30:34,014 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 90 transitions. [2024-11-03 07:30:34,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 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 07:30:34,014 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 90 transitions. [2024-11-03 07:30:34,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-03 07:30:34,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:30:34,015 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 07:30:34,020 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 07:30:34,215 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 07:30:34,216 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:30:34,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:30:34,216 INFO L85 PathProgramCache]: Analyzing trace with hash 264406920, now seen corresponding path program 2 times [2024-11-03 07:30:34,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:30:34,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143386646] [2024-11-03 07:30:34,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:30:34,217 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:30:34,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:30:34,220 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 07:30:34,221 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 07:30:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:30:34,312 WARN L253 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-11-03 07:30:34,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:30:35,196 INFO L349 Elim1Store]: treesize reduction 88, result has 33.8 percent of original size [2024-11-03 07:30:35,196 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 07:30:37,200 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-03 07:30:37,201 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:30:37,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2024-11-03 07:30:37,782 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-03 07:30:37,782 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:30:37,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143386646] [2024-11-03 07:30:37,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1143386646] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 07:30:37,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 07:30:37,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 24 [2024-11-03 07:30:37,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003481994] [2024-11-03 07:30:37,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 07:30:37,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-03 07:30:37,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:30:37,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-03 07:30:37,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2024-11-03 07:30:37,784 INFO L87 Difference]: Start difference. First operand 72 states and 90 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 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 07:30:38,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:30:38,332 INFO L93 Difference]: Finished difference Result 105 states and 132 transitions. [2024-11-03 07:30:38,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-03 07:30:38,332 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 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 54 [2024-11-03 07:30:38,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:30:38,333 INFO L225 Difference]: With dead ends: 105 [2024-11-03 07:30:38,333 INFO L226 Difference]: Without dead ends: 71 [2024-11-03 07:30:38,333 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=217, Invalid=775, Unknown=0, NotChecked=0, Total=992 [2024-11-03 07:30:38,334 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 19 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 07:30:38,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 177 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 07:30:38,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-03 07:30:38,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2024-11-03 07:30:38,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 63 states have (on average 1.2380952380952381) internal successors, (78), 63 states have internal predecessors, (78), 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 07:30:38,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 86 transitions. [2024-11-03 07:30:38,350 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 86 transitions. Word has length 54 [2024-11-03 07:30:38,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:30:38,350 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 86 transitions. [2024-11-03 07:30:38,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 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 07:30:38,350 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 86 transitions. [2024-11-03 07:30:38,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-03 07:30:38,351 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:30:38,351 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 07:30:38,353 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 07:30:38,551 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 07:30:38,552 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:30:38,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:30:38,552 INFO L85 PathProgramCache]: Analyzing trace with hash 70627916, now seen corresponding path program 3 times [2024-11-03 07:30:38,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:30:38,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951163739] [2024-11-03 07:30:38,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:30:38,553 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:30:38,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:30:38,554 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 07:30:38,554 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 07:30:38,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:30:38,630 WARN L253 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-11-03 07:30:38,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:30:39,437 INFO L349 Elim1Store]: treesize reduction 88, result has 33.8 percent of original size [2024-11-03 07:30:39,438 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 07:30:40,948 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 07:30:40,948 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:30:41,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2024-11-03 07:30:41,557 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 07:30:41,557 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:30:41,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951163739] [2024-11-03 07:30:41,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1951163739] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 07:30:41,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 07:30:41,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2024-11-03 07:30:41,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013299335] [2024-11-03 07:30:41,557 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 07:30:41,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-03 07:30:41,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:30:41,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-03 07:30:41,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=531, Unknown=0, NotChecked=0, Total=650 [2024-11-03 07:30:41,559 INFO L87 Difference]: Start difference. First operand 69 states and 86 transitions. Second operand has 26 states, 26 states have (on average 2.5) internal successors, (65), 26 states have internal predecessors, (65), 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 07:30:44,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:30:44,319 INFO L93 Difference]: Finished difference Result 140 states and 178 transitions. [2024-11-03 07:30:44,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-03 07:30:44,319 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.5) internal successors, (65), 26 states have internal predecessors, (65), 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 54 [2024-11-03 07:30:44,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:30:44,320 INFO L225 Difference]: With dead ends: 140 [2024-11-03 07:30:44,320 INFO L226 Difference]: Without dead ends: 109 [2024-11-03 07:30:44,321 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=416, Invalid=1936, Unknown=0, NotChecked=0, Total=2352 [2024-11-03 07:30:44,321 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 98 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-03 07:30:44,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 377 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-03 07:30:44,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-03 07:30:44,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 83. [2024-11-03 07:30:44,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 77 states have (on average 1.2337662337662338) internal successors, (95), 77 states have internal predecessors, (95), 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 07:30:44,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 103 transitions. [2024-11-03 07:30:44,338 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 103 transitions. Word has length 54 [2024-11-03 07:30:44,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:30:44,338 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 103 transitions. [2024-11-03 07:30:44,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.5) internal successors, (65), 26 states have internal predecessors, (65), 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 07:30:44,339 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 103 transitions. [2024-11-03 07:30:44,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-03 07:30:44,339 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:30:44,339 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1] [2024-11-03 07:30:44,341 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 07:30:44,539 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 07:30:44,540 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:30:44,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:30:44,540 INFO L85 PathProgramCache]: Analyzing trace with hash -322399094, now seen corresponding path program 4 times [2024-11-03 07:30:44,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:30:44,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527385308] [2024-11-03 07:30:44,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:30:44,540 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:30:44,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:30:44,543 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 07:30:44,544 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 07:30:44,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:30:44,635 WARN L253 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-11-03 07:30:44,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:30:45,207 INFO L349 Elim1Store]: treesize reduction 88, result has 33.8 percent of original size [2024-11-03 07:30:45,207 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 07:30:46,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-03 07:30:46,312 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 07:30:46,312 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:30:46,374 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 07:30:46,374 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:30:46,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527385308] [2024-11-03 07:30:46,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1527385308] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 07:30:46,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 07:30:46,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 17 [2024-11-03 07:30:46,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110637796] [2024-11-03 07:30:46,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 07:30:46,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 07:30:46,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:30:46,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 07:30:46,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-11-03 07:30:46,376 INFO L87 Difference]: Start difference. First operand 83 states and 103 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 07:30:46,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:30:46,411 INFO L93 Difference]: Finished difference Result 89 states and 108 transitions. [2024-11-03 07:30:46,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 07:30:46,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 54 [2024-11-03 07:30:46,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:30:46,413 INFO L225 Difference]: With dead ends: 89 [2024-11-03 07:30:46,413 INFO L226 Difference]: Without dead ends: 83 [2024-11-03 07:30:46,414 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-11-03 07:30:46,415 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 07:30:46,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 07:30:46,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-03 07:30:46,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-11-03 07:30:46,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 77 states have (on average 1.2077922077922079) internal successors, (93), 77 states have internal predecessors, (93), 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 07:30:46,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 101 transitions. [2024-11-03 07:30:46,439 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 101 transitions. Word has length 54 [2024-11-03 07:30:46,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:30:46,440 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 101 transitions. [2024-11-03 07:30:46,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 07:30:46,440 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 101 transitions. [2024-11-03 07:30:46,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-03 07:30:46,441 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:30:46,441 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, 1] [2024-11-03 07:30:46,443 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 07:30:46,641 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 07:30:46,641 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:30:46,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:30:46,642 INFO L85 PathProgramCache]: Analyzing trace with hash 286497557, now seen corresponding path program 1 times [2024-11-03 07:30:46,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:30:46,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825687868] [2024-11-03 07:30:46,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:30:46,642 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:30:46,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:30:46,643 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 07:30:46,645 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 07:30:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:30:46,735 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-03 07:30:46,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:30:47,300 INFO L349 Elim1Store]: treesize reduction 28, result has 31.7 percent of original size [2024-11-03 07:30:47,300 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 07:30:47,782 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 07:30:47,782 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:30:48,169 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 61 proven. 15 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-03 07:30:48,169 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:30:48,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825687868] [2024-11-03 07:30:48,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1825687868] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 07:30:48,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 07:30:48,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 23 [2024-11-03 07:30:48,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783920691] [2024-11-03 07:30:48,170 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 07:30:48,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-03 07:30:48,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:30:48,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-03 07:30:48,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2024-11-03 07:30:48,171 INFO L87 Difference]: Start difference. First operand 83 states and 101 transitions. Second operand has 23 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 23 states have internal predecessors, (76), 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 07:30:50,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:30:50,385 INFO L93 Difference]: Finished difference Result 173 states and 216 transitions. [2024-11-03 07:30:50,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-03 07:30:50,386 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 23 states have internal predecessors, (76), 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 74 [2024-11-03 07:30:50,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:30:50,388 INFO L225 Difference]: With dead ends: 173 [2024-11-03 07:30:50,388 INFO L226 Difference]: Without dead ends: 128 [2024-11-03 07:30:50,389 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=582, Invalid=2070, Unknown=0, NotChecked=0, Total=2652 [2024-11-03 07:30:50,390 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 140 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 07:30:50,390 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 324 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 07:30:50,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-03 07:30:50,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 104. [2024-11-03 07:30:50,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 98 states have (on average 1.2244897959183674) internal successors, (120), 98 states have internal predecessors, (120), 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 07:30:50,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 128 transitions. [2024-11-03 07:30:50,417 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 128 transitions. Word has length 74 [2024-11-03 07:30:50,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:30:50,417 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 128 transitions. [2024-11-03 07:30:50,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 23 states have internal predecessors, (76), 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 07:30:50,417 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 128 transitions. [2024-11-03 07:30:50,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-03 07:30:50,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:30:50,418 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, 1] [2024-11-03 07:30:50,420 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 07:30:50,620 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 07:30:50,620 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:30:50,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:30:50,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1509115305, now seen corresponding path program 2 times [2024-11-03 07:30:50,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:30:50,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102285199] [2024-11-03 07:30:50,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:30:50,621 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:30:50,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:30:50,622 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 07:30:50,623 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 07:30:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:30:50,711 WARN L253 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-11-03 07:30:50,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:30:51,218 INFO L349 Elim1Store]: treesize reduction 28, result has 31.7 percent of original size [2024-11-03 07:30:51,219 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 07:30:52,018 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 07:30:52,019 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:30:53,127 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 07:30:53,127 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:30:53,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102285199] [2024-11-03 07:30:53,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2102285199] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 07:30:53,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 07:30:53,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 37 [2024-11-03 07:30:53,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148498997] [2024-11-03 07:30:53,128 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 07:30:53,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-03 07:30:53,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:30:53,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-03 07:30:53,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=1052, Unknown=0, NotChecked=0, Total=1332 [2024-11-03 07:30:53,130 INFO L87 Difference]: Start difference. First operand 104 states and 128 transitions. Second operand has 37 states, 37 states have (on average 2.3513513513513513) internal successors, (87), 37 states have internal predecessors, (87), 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 07:31:04,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:31:04,537 INFO L93 Difference]: Finished difference Result 321 states and 415 transitions. [2024-11-03 07:31:04,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2024-11-03 07:31:04,537 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.3513513513513513) internal successors, (87), 37 states have internal predecessors, (87), 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 74 [2024-11-03 07:31:04,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:31:04,539 INFO L225 Difference]: With dead ends: 321 [2024-11-03 07:31:04,539 INFO L226 Difference]: Without dead ends: 282 [2024-11-03 07:31:04,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6503 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=2811, Invalid=15011, Unknown=0, NotChecked=0, Total=17822 [2024-11-03 07:31:04,543 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 485 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-03 07:31:04,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 566 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-03 07:31:04,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-03 07:31:04,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 199. [2024-11-03 07:31:04,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 193 states have (on average 1.2953367875647668) internal successors, (250), 193 states have internal predecessors, (250), 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 07:31:04,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 258 transitions. [2024-11-03 07:31:04,600 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 258 transitions. Word has length 74 [2024-11-03 07:31:04,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:31:04,600 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 258 transitions. [2024-11-03 07:31:04,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.3513513513513513) internal successors, (87), 37 states have internal predecessors, (87), 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 07:31:04,601 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 258 transitions. [2024-11-03 07:31:04,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-03 07:31:04,601 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:31:04,602 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, 1] [2024-11-03 07:31:04,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2024-11-03 07:31:04,802 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 07:31:04,802 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:31:04,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:31:04,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1902568981, now seen corresponding path program 3 times [2024-11-03 07:31:04,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:31:04,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036217610] [2024-11-03 07:31:04,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:31:04,803 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:31:04,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:31:04,805 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 07:31:04,806 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 07:31:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:31:04,896 WARN L253 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-11-03 07:31:04,900 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:31:05,409 INFO L349 Elim1Store]: treesize reduction 28, result has 31.7 percent of original size [2024-11-03 07:31:05,409 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 07:31:06,389 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 07:31:06,389 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:31:07,500 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 07:31:07,501 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:31:07,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036217610] [2024-11-03 07:31:07,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1036217610] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 07:31:07,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 07:31:07,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19] total 40 [2024-11-03 07:31:07,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286535649] [2024-11-03 07:31:07,501 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 07:31:07,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-03 07:31:07,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:31:07,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-03 07:31:07,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=1249, Unknown=0, NotChecked=0, Total=1560 [2024-11-03 07:31:07,503 INFO L87 Difference]: Start difference. First operand 199 states and 258 transitions. Second operand has 40 states, 40 states have (on average 2.45) internal successors, (98), 40 states have internal predecessors, (98), 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 07:31:14,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:31:14,004 INFO L93 Difference]: Finished difference Result 429 states and 561 transitions. [2024-11-03 07:31:14,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-03 07:31:14,004 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.45) internal successors, (98), 40 states have internal predecessors, (98), 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 74 [2024-11-03 07:31:14,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:31:14,006 INFO L225 Difference]: With dead ends: 429 [2024-11-03 07:31:14,006 INFO L226 Difference]: Without dead ends: 362 [2024-11-03 07:31:14,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3980 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=2069, Invalid=10141, Unknown=0, NotChecked=0, Total=12210 [2024-11-03 07:31:14,010 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 408 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-03 07:31:14,010 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 534 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-03 07:31:14,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2024-11-03 07:31:14,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 289. [2024-11-03 07:31:14,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 283 states have (on average 1.3074204946996466) internal successors, (370), 283 states have internal predecessors, (370), 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 07:31:14,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 378 transitions. [2024-11-03 07:31:14,088 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 378 transitions. Word has length 74 [2024-11-03 07:31:14,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:31:14,089 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 378 transitions. [2024-11-03 07:31:14,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.45) internal successors, (98), 40 states have internal predecessors, (98), 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 07:31:14,089 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 378 transitions. [2024-11-03 07:31:14,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-03 07:31:14,090 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:31:14,090 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, 1] [2024-11-03 07:31:14,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2024-11-03 07:31:14,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 07:31:14,290 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:31:14,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:31:14,291 INFO L85 PathProgramCache]: Analyzing trace with hash 294694613, now seen corresponding path program 4 times [2024-11-03 07:31:14,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:31:14,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600027622] [2024-11-03 07:31:14,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:31:14,291 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:31:14,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:31:14,292 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 07:31:14,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2024-11-03 07:31:14,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:31:14,381 WARN L253 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 101 conjuncts are in the unsatisfiable core [2024-11-03 07:31:14,385 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:31:14,883 INFO L349 Elim1Store]: treesize reduction 88, result has 33.8 percent of original size [2024-11-03 07:31:14,884 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 07:31:17,000 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 07:31:17,111 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 07:31:17,112 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:31:22,019 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 07:31:22,020 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:31:22,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600027622] [2024-11-03 07:31:22,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [600027622] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 07:31:22,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 07:31:22,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 17] total 40 [2024-11-03 07:31:22,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228951553] [2024-11-03 07:31:22,020 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 07:31:22,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-03 07:31:22,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:31:22,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-03 07:31:22,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=1139, Unknown=1, NotChecked=0, Total=1560 [2024-11-03 07:31:22,022 INFO L87 Difference]: Start difference. First operand 289 states and 378 transitions. Second operand has 40 states, 40 states have (on average 2.475) internal successors, (99), 40 states have internal predecessors, (99), 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 07:31:25,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:31:25,226 INFO L93 Difference]: Finished difference Result 515 states and 668 transitions. [2024-11-03 07:31:25,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-03 07:31:25,227 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.475) internal successors, (99), 40 states have internal predecessors, (99), 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 74 [2024-11-03 07:31:25,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:31:25,228 INFO L225 Difference]: With dead ends: 515 [2024-11-03 07:31:25,228 INFO L226 Difference]: Without dead ends: 429 [2024-11-03 07:31:25,229 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1681 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=1021, Invalid=4380, Unknown=1, NotChecked=0, Total=5402 [2024-11-03 07:31:25,230 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 243 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-03 07:31:25,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 519 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-03 07:31:25,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2024-11-03 07:31:25,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 407. [2024-11-03 07:31:25,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 401 states have (on average 1.286783042394015) internal successors, (516), 401 states have internal predecessors, (516), 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 07:31:25,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 524 transitions. [2024-11-03 07:31:25,314 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 524 transitions. Word has length 74 [2024-11-03 07:31:25,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:31:25,314 INFO L471 AbstractCegarLoop]: Abstraction has 407 states and 524 transitions. [2024-11-03 07:31:25,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.475) internal successors, (99), 40 states have internal predecessors, (99), 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 07:31:25,314 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 524 transitions. [2024-11-03 07:31:25,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-03 07:31:25,315 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:31:25,316 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, 1] [2024-11-03 07:31:25,318 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2024-11-03 07:31:25,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 07:31:25,516 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:31:25,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:31:25,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1117623351, now seen corresponding path program 5 times [2024-11-03 07:31:25,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:31:25,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621801938] [2024-11-03 07:31:25,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:31:25,517 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:31:25,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:31:25,518 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 07:31:25,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2024-11-03 07:31:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:31:25,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-11-03 07:31:25,624 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:31:26,084 INFO L349 Elim1Store]: treesize reduction 28, result has 31.7 percent of original size [2024-11-03 07:31:26,085 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 07:31:27,402 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 07:31:27,402 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:31:28,481 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 07:31:28,482 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:31:28,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621801938] [2024-11-03 07:31:28,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [621801938] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 07:31:28,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 07:31:28,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 19] total 44 [2024-11-03 07:31:28,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746880511] [2024-11-03 07:31:28,482 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 07:31:28,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-03 07:31:28,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:31:28,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-03 07:31:28,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=1484, Unknown=0, NotChecked=0, Total=1892 [2024-11-03 07:31:28,484 INFO L87 Difference]: Start difference. First operand 407 states and 524 transitions. Second operand has 44 states, 44 states have (on average 2.7045454545454546) internal successors, (119), 44 states have internal predecessors, (119), 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 07:31:37,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:31:37,547 INFO L93 Difference]: Finished difference Result 1058 states and 1345 transitions. [2024-11-03 07:31:37,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2024-11-03 07:31:37,548 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.7045454545454546) internal successors, (119), 44 states have internal predecessors, (119), 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 108 [2024-11-03 07:31:37,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:31:37,551 INFO L225 Difference]: With dead ends: 1058 [2024-11-03 07:31:37,551 INFO L226 Difference]: Without dead ends: 854 [2024-11-03 07:31:37,561 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6449 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=3325, Invalid=14497, Unknown=0, NotChecked=0, Total=17822 [2024-11-03 07:31:37,562 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 338 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 1567 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-03 07:31:37,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 555 Invalid, 1602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1567 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-03 07:31:37,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2024-11-03 07:31:37,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 757. [2024-11-03 07:31:37,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 751 states have (on average 1.2583222370173102) internal successors, (945), 751 states have internal predecessors, (945), 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 07:31:37,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 953 transitions. [2024-11-03 07:31:37,735 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 953 transitions. Word has length 108 [2024-11-03 07:31:37,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:31:37,735 INFO L471 AbstractCegarLoop]: Abstraction has 757 states and 953 transitions. [2024-11-03 07:31:37,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.7045454545454546) internal successors, (119), 44 states have internal predecessors, (119), 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 07:31:37,736 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 953 transitions. [2024-11-03 07:31:37,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-03 07:31:37,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:31:37,737 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 11, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 07:31:37,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2024-11-03 07:31:37,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 07:31:37,938 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:31:37,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:31:37,938 INFO L85 PathProgramCache]: Analyzing trace with hash -943054923, now seen corresponding path program 6 times [2024-11-03 07:31:37,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:31:37,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584509320] [2024-11-03 07:31:37,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:31:37,939 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:31:37,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:31:37,941 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 07:31:37,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2024-11-03 07:31:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:31:38,045 WARN L253 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 115 conjuncts are in the unsatisfiable core [2024-11-03 07:31:38,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:31:38,515 INFO L349 Elim1Store]: treesize reduction 28, result has 31.7 percent of original size [2024-11-03 07:31:38,515 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 07:31:40,599 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 07:31:40,599 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:31:41,972 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 07:31:41,973 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:31:41,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584509320] [2024-11-03 07:31:41,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [584509320] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 07:31:41,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 07:31:41,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 22] total 55 [2024-11-03 07:31:41,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760063489] [2024-11-03 07:31:41,973 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 07:31:41,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-03 07:31:41,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:31:41,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-03 07:31:41,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=547, Invalid=2423, Unknown=0, NotChecked=0, Total=2970 [2024-11-03 07:31:41,975 INFO L87 Difference]: Start difference. First operand 757 states and 953 transitions. Second operand has 55 states, 55 states have (on average 2.7636363636363637) internal successors, (152), 55 states have internal predecessors, (152), 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)