/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 bitwuzla -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/floats-nonlinear/color-magicseries1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 15:22:13,050 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 15:22:13,107 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 15:22:13,113 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 15:22:13,114 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 15:22:13,140 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 15:22:13,141 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 15:22:13,141 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 15:22:13,141 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 15:22:13,142 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 15:22:13,142 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 15:22:13,142 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 15:22:13,143 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 15:22:13,143 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 15:22:13,146 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 15:22:13,146 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 15:22:13,146 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 15:22:13,147 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 15:22:13,147 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 15:22:13,147 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 15:22:13,151 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 15:22:13,152 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 15:22:13,152 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 15:22:13,152 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 15:22:13,152 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 15:22:13,152 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 15:22:13,152 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 15:22:13,153 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 15:22:13,153 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 15:22:13,153 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 15:22:13,153 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 15:22:13,153 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 15:22:13,153 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 15:22:13,153 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 15:22:13,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 15:22:13,154 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 15:22:13,154 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 15:22:13,154 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 15:22:13,154 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 15:22:13,154 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 15:22:13,155 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 15:22:13,156 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 15:22:13,156 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 15:22:13,156 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 15:22:13,156 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-03 15:22:13,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 15:22:13,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 15:22:13,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 15:22:13,365 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 15:22:13,366 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 15:22:13,367 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-nonlinear/color-magicseries1.c [2024-11-03 15:22:14,636 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 15:22:14,765 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 15:22:14,765 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-nonlinear/color-magicseries1.c [2024-11-03 15:22:14,770 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fbdde6b1/3d5e2c57db9d41c682c0877dbbffc5c6/FLAG0f4c4f1b8 [2024-11-03 15:22:14,782 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fbdde6b1/3d5e2c57db9d41c682c0877dbbffc5c6 [2024-11-03 15:22:14,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 15:22:14,785 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 15:22:14,786 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 15:22:14,786 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 15:22:14,789 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 15:22:14,790 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:22:14" (1/1) ... [2024-11-03 15:22:14,790 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ada6925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:22:14, skipping insertion in model container [2024-11-03 15:22:14,790 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:22:14" (1/1) ... [2024-11-03 15:22:14,803 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 15:22:14,903 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-nonlinear/color-magicseries1.c[613,626] [2024-11-03 15:22:14,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 15:22:14,924 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 15:22:14,932 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-nonlinear/color-magicseries1.c[613,626] [2024-11-03 15:22:14,939 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 15:22:14,950 INFO L204 MainTranslator]: Completed translation [2024-11-03 15:22:14,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:22:14 WrapperNode [2024-11-03 15:22:14,951 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 15:22:14,951 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 15:22:14,951 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 15:22:14,952 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 15:22:14,956 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:22:14" (1/1) ... [2024-11-03 15:22:14,961 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:22:14" (1/1) ... [2024-11-03 15:22:14,976 INFO L138 Inliner]: procedures = 20, calls = 24, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 127 [2024-11-03 15:22:14,977 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 15:22:14,977 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 15:22:14,978 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 15:22:14,978 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 15:22:14,987 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:22:14" (1/1) ... [2024-11-03 15:22:14,987 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:22:14" (1/1) ... [2024-11-03 15:22:14,990 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:22:14" (1/1) ... [2024-11-03 15:22:15,000 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 15:22:15,001 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:22:14" (1/1) ... [2024-11-03 15:22:15,001 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:22:14" (1/1) ... [2024-11-03 15:22:15,006 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:22:14" (1/1) ... [2024-11-03 15:22:15,009 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:22:14" (1/1) ... [2024-11-03 15:22:15,010 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:22:14" (1/1) ... [2024-11-03 15:22:15,011 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:22:14" (1/1) ... [2024-11-03 15:22:15,013 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 15:22:15,013 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 15:22:15,014 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 15:22:15,014 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 15:22:15,014 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:22:14" (1/1) ... [2024-11-03 15:22:15,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 15:22:15,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 15:22:15,043 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 15:22:15,048 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 15:22:15,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 15:22:15,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 15:22:15,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-03 15:22:15,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-03 15:22:15,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-03 15:22:15,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-03 15:22:15,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-03 15:22:15,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-03 15:22:15,081 INFO L130 BoogieDeclarations]: Found specification of procedure check_domain [2024-11-03 15:22:15,081 INFO L138 BoogieDeclarations]: Found implementation of procedure check_domain [2024-11-03 15:22:15,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 15:22:15,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 15:22:15,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-03 15:22:15,181 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 15:22:15,183 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 15:22:15,371 INFO L? ?]: Removed 43 outVars from TransFormulas that were not future-live. [2024-11-03 15:22:15,371 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 15:22:15,385 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 15:22:15,386 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-03 15:22:15,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:22:15 BoogieIcfgContainer [2024-11-03 15:22:15,386 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 15:22:15,387 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 15:22:15,388 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 15:22:15,391 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 15:22:15,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:22:14" (1/3) ... [2024-11-03 15:22:15,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fcb1698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:22:15, skipping insertion in model container [2024-11-03 15:22:15,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:22:14" (2/3) ... [2024-11-03 15:22:15,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fcb1698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:22:15, skipping insertion in model container [2024-11-03 15:22:15,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:22:15" (3/3) ... [2024-11-03 15:22:15,393 INFO L112 eAbstractionObserver]: Analyzing ICFG color-magicseries1.c [2024-11-03 15:22:15,404 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 15:22:15,404 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 15:22:15,439 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 15:22:15,443 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;@5de1d4c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 15:22:15,443 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 15:22:15,446 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 32 states have internal predecessors, (45), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 15:22:15,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-03 15:22:15,451 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 15:22:15,451 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 15:22:15,451 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 15:22:15,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 15:22:15,455 INFO L85 PathProgramCache]: Analyzing trace with hash -173200605, now seen corresponding path program 1 times [2024-11-03 15:22:15,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 15:22:15,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948404428] [2024-11-03 15:22:15,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 15:22:15,462 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 15:22:15,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:15,463 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 15:22:15,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-03 15:22:15,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 15:22:15,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 15:22:15,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 15:22:15,612 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 15:22:15,612 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 15:22:15,670 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 15:22:15,671 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 15:22:15,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948404428] [2024-11-03 15:22:15,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [948404428] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 15:22:15,672 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 15:22:15,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2024-11-03 15:22:15,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115532008] [2024-11-03 15:22:15,674 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 15:22:15,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-03 15:22:15,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 15:22:15,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-03 15:22:15,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-03 15:22:15,693 INFO L87 Difference]: Start difference. First operand has 38 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 32 states have internal predecessors, (45), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-03 15:22:15,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 15:22:15,748 INFO L93 Difference]: Finished difference Result 73 states and 104 transitions. [2024-11-03 15:22:15,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 15:22:15,749 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2024-11-03 15:22:15,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 15:22:15,754 INFO L225 Difference]: With dead ends: 73 [2024-11-03 15:22:15,754 INFO L226 Difference]: Without dead ends: 38 [2024-11-03 15:22:15,756 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-03 15:22:15,759 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 15:22:15,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 269 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 15:22:15,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-03 15:22:15,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-03 15:22:15,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 31 states have internal predecessors, (41), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-03 15:22:15,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 53 transitions. [2024-11-03 15:22:15,786 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 53 transitions. Word has length 17 [2024-11-03 15:22:15,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 15:22:15,789 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 53 transitions. [2024-11-03 15:22:15,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-03 15:22:15,790 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 53 transitions. [2024-11-03 15:22:15,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-03 15:22:15,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 15:22:15,791 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 15:22:15,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-03 15:22:15,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:15,993 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 15:22:15,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 15:22:15,993 INFO L85 PathProgramCache]: Analyzing trace with hash -466603612, now seen corresponding path program 1 times [2024-11-03 15:22:15,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 15:22:15,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581167501] [2024-11-03 15:22:15,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 15:22:15,994 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 15:22:15,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:15,995 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 15:22:16,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-03 15:22:16,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 15:22:16,026 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 15:22:16,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 15:22:16,051 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 15:22:16,051 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 15:22:16,068 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 15:22:16,068 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 15:22:16,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581167501] [2024-11-03 15:22:16,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [581167501] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 15:22:16,068 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 15:22:16,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2024-11-03 15:22:16,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591861907] [2024-11-03 15:22:16,070 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 15:22:16,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-03 15:22:16,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 15:22:16,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-03 15:22:16,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-03 15:22:16,072 INFO L87 Difference]: Start difference. First operand 38 states and 53 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-03 15:22:16,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 15:22:16,091 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2024-11-03 15:22:16,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 15:22:16,092 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-03 15:22:16,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 15:22:16,093 INFO L225 Difference]: With dead ends: 42 [2024-11-03 15:22:16,093 INFO L226 Difference]: Without dead ends: 38 [2024-11-03 15:22:16,093 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-03 15:22:16,095 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 15:22:16,096 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 174 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 15:22:16,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-03 15:22:16,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-03 15:22:16,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-03 15:22:16,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 51 transitions. [2024-11-03 15:22:16,103 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 51 transitions. Word has length 17 [2024-11-03 15:22:16,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 15:22:16,104 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 51 transitions. [2024-11-03 15:22:16,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-03 15:22:16,104 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 51 transitions. [2024-11-03 15:22:16,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-03 15:22:16,104 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 15:22:16,105 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 15:22:16,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0 [2024-11-03 15:22:16,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:16,307 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 15:22:16,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 15:22:16,307 INFO L85 PathProgramCache]: Analyzing trace with hash -97449680, now seen corresponding path program 1 times [2024-11-03 15:22:16,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 15:22:16,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579942490] [2024-11-03 15:22:16,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 15:22:16,308 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 15:22:16,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:16,310 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 15:22:16,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-03 15:22:16,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 15:22:16,345 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-03 15:22:16,346 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 15:22:16,379 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 15:22:16,379 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 15:22:16,429 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 15:22:16,430 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 15:22:16,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579942490] [2024-11-03 15:22:16,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1579942490] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 15:22:16,430 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 15:22:16,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2024-11-03 15:22:16,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752759942] [2024-11-03 15:22:16,430 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 15:22:16,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-03 15:22:16,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 15:22:16,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-03 15:22:16,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-03 15:22:16,432 INFO L87 Difference]: Start difference. First operand 38 states and 51 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-03 15:22:16,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 15:22:16,495 INFO L93 Difference]: Finished difference Result 74 states and 99 transitions. [2024-11-03 15:22:16,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-03 15:22:16,496 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2024-11-03 15:22:16,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 15:22:16,497 INFO L225 Difference]: With dead ends: 74 [2024-11-03 15:22:16,497 INFO L226 Difference]: Without dead ends: 36 [2024-11-03 15:22:16,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-03 15:22:16,499 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 15:22:16,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 240 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 15:22:16,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-03 15:22:16,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-03 15:22:16,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 30 states have internal predecessors, (34), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-03 15:22:16,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2024-11-03 15:22:16,508 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 21 [2024-11-03 15:22:16,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 15:22:16,508 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2024-11-03 15:22:16,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-03 15:22:16,509 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2024-11-03 15:22:16,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-03 15:22:16,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 15:22:16,510 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 15:22:16,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Forceful destruction successful, exit code 0 [2024-11-03 15:22:16,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:16,712 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 15:22:16,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 15:22:16,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1645112148, now seen corresponding path program 1 times [2024-11-03 15:22:16,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 15:22:16,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249947983] [2024-11-03 15:22:16,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 15:22:16,714 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 15:22:16,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:16,716 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 15:22:16,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-03 15:22:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 15:22:16,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 15:22:16,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 15:22:16,789 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 15:22:16,790 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 15:22:16,819 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 15:22:16,819 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 15:22:16,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249947983] [2024-11-03 15:22:16,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [249947983] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 15:22:16,820 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 15:22:16,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 15:22:16,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245640528] [2024-11-03 15:22:16,820 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 15:22:16,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 15:22:16,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 15:22:16,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 15:22:16,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 15:22:16,821 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 15:22:16,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 15:22:16,847 INFO L93 Difference]: Finished difference Result 53 states and 66 transitions. [2024-11-03 15:22:16,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 15:22:16,848 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), 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 39 [2024-11-03 15:22:16,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 15:22:16,849 INFO L225 Difference]: With dead ends: 53 [2024-11-03 15:22:16,849 INFO L226 Difference]: Without dead ends: 46 [2024-11-03 15:22:16,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 15:22:16,850 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 27 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 15:22:16,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 68 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 15:22:16,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-03 15:22:16,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2024-11-03 15:22:16,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 38 states have internal predecessors, (45), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-03 15:22:16,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2024-11-03 15:22:16,859 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 39 [2024-11-03 15:22:16,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 15:22:16,860 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2024-11-03 15:22:16,860 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), 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 15:22:16,860 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2024-11-03 15:22:16,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-03 15:22:16,861 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 15:22:16,861 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 15:22:16,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Forceful destruction successful, exit code 0 [2024-11-03 15:22:17,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:17,063 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 15:22:17,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 15:22:17,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1930899933, now seen corresponding path program 1 times [2024-11-03 15:22:17,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 15:22:17,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874252808] [2024-11-03 15:22:17,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 15:22:17,064 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 15:22:17,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:17,065 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 15:22:17,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-03 15:22:17,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 15:22:17,115 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 15:22:17,116 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 15:22:17,124 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 15:22:17,124 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 15:22:17,147 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 15:22:17,147 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 15:22:17,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874252808] [2024-11-03 15:22:17,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [874252808] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 15:22:17,147 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 15:22:17,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 15:22:17,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005555608] [2024-11-03 15:22:17,148 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 15:22:17,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 15:22:17,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 15:22:17,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 15:22:17,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 15:22:17,149 INFO L87 Difference]: Start difference. First operand 44 states and 56 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 15:22:17,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 15:22:17,184 INFO L93 Difference]: Finished difference Result 70 states and 92 transitions. [2024-11-03 15:22:17,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 15:22:17,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 41 [2024-11-03 15:22:17,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 15:22:17,187 INFO L225 Difference]: With dead ends: 70 [2024-11-03 15:22:17,187 INFO L226 Difference]: Without dead ends: 52 [2024-11-03 15:22:17,188 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 15:22:17,188 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 15:22:17,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 105 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 15:22:17,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-03 15:22:17,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-03 15:22:17,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 46 states have internal predecessors, (55), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-03 15:22:17,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2024-11-03 15:22:17,201 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 41 [2024-11-03 15:22:17,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 15:22:17,202 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2024-11-03 15:22:17,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 15:22:17,202 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2024-11-03 15:22:17,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-03 15:22:17,203 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 15:22:17,203 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 15:22:17,209 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Ended with exit code 0 [2024-11-03 15:22:17,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:17,404 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 15:22:17,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 15:22:17,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1729819971, now seen corresponding path program 1 times [2024-11-03 15:22:17,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 15:22:17,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275868863] [2024-11-03 15:22:17,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 15:22:17,405 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 15:22:17,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:17,406 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 15:22:17,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-03 15:22:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 15:22:17,457 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 15:22:17,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 15:22:17,490 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 15:22:17,490 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 15:22:17,548 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 15:22:17,548 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 15:22:17,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275868863] [2024-11-03 15:22:17,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1275868863] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 15:22:17,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 15:22:17,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-03 15:22:17,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623911914] [2024-11-03 15:22:17,549 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 15:22:17,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 15:22:17,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 15:22:17,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 15:22:17,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-03 15:22:17,550 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 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 15:22:17,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 15:22:17,584 INFO L93 Difference]: Finished difference Result 86 states and 113 transitions. [2024-11-03 15:22:17,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 15:22:17,584 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 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 47 [2024-11-03 15:22:17,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 15:22:17,585 INFO L225 Difference]: With dead ends: 86 [2024-11-03 15:22:17,585 INFO L226 Difference]: Without dead ends: 64 [2024-11-03 15:22:17,585 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-03 15:22:17,586 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 15 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 15:22:17,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 151 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 15:22:17,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-03 15:22:17,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-03 15:22:17,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 58 states have internal predecessors, (71), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-03 15:22:17,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 82 transitions. [2024-11-03 15:22:17,592 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 82 transitions. Word has length 47 [2024-11-03 15:22:17,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 15:22:17,593 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 82 transitions. [2024-11-03 15:22:17,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 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 15:22:17,593 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 82 transitions. [2024-11-03 15:22:17,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-03 15:22:17,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 15:22:17,594 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 15:22:17,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Ended with exit code 0 [2024-11-03 15:22:17,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:17,795 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 15:22:17,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 15:22:17,795 INFO L85 PathProgramCache]: Analyzing trace with hash 60507235, now seen corresponding path program 2 times [2024-11-03 15:22:17,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 15:22:17,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1102213277] [2024-11-03 15:22:17,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 15:22:17,796 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 15:22:17,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:17,798 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 15:22:17,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Waiting until timeout for monitored process [2024-11-03 15:22:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 15:22:17,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 15:22:17,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 15:22:17,869 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 15:22:17,869 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 15:22:17,883 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 15:22:17,883 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 15:22:17,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1102213277] [2024-11-03 15:22:17,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1102213277] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 15:22:17,884 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 15:22:17,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2024-11-03 15:22:17,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417484816] [2024-11-03 15:22:17,884 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 15:22:17,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 15:22:17,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 15:22:17,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 15:22:17,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-03 15:22:17,885 INFO L87 Difference]: Start difference. First operand 64 states and 82 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 15:22:17,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 15:22:17,900 INFO L93 Difference]: Finished difference Result 70 states and 87 transitions. [2024-11-03 15:22:17,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 15:22:17,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 53 [2024-11-03 15:22:17,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 15:22:17,903 INFO L225 Difference]: With dead ends: 70 [2024-11-03 15:22:17,903 INFO L226 Difference]: Without dead ends: 64 [2024-11-03 15:22:17,904 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 102 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 15:22:17,906 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 15:22:17,906 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 15:22:17,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-03 15:22:17,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-03 15:22:17,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 58 states have internal predecessors, (69), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-03 15:22:17,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 80 transitions. [2024-11-03 15:22:17,913 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 80 transitions. Word has length 53 [2024-11-03 15:22:17,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 15:22:17,913 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 80 transitions. [2024-11-03 15:22:17,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 15:22:17,913 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 80 transitions. [2024-11-03 15:22:17,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-03 15:22:17,916 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 15:22:17,916 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 15:22:17,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Ended with exit code 0 [2024-11-03 15:22:18,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:18,117 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 15:22:18,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 15:22:18,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1455445076, now seen corresponding path program 1 times [2024-11-03 15:22:18,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 15:22:18,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820561267] [2024-11-03 15:22:18,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 15:22:18,118 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 15:22:18,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:18,125 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 15:22:18,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Waiting until timeout for monitored process [2024-11-03 15:22:18,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 15:22:18,218 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 15:22:18,221 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 15:22:18,293 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-03 15:22:18,293 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 15:22:18,390 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-03 15:22:18,391 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 15:22:18,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820561267] [2024-11-03 15:22:18,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1820561267] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 15:22:18,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 15:22:18,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-03 15:22:18,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253231940] [2024-11-03 15:22:18,391 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 15:22:18,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 15:22:18,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 15:22:18,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 15:22:18,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-03 15:22:18,393 INFO L87 Difference]: Start difference. First operand 64 states and 80 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 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 15:22:18,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 15:22:18,453 INFO L93 Difference]: Finished difference Result 105 states and 132 transitions. [2024-11-03 15:22:18,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 15:22:18,453 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 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 73 [2024-11-03 15:22:18,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 15:22:18,457 INFO L225 Difference]: With dead ends: 105 [2024-11-03 15:22:18,457 INFO L226 Difference]: Without dead ends: 98 [2024-11-03 15:22:18,458 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-03 15:22:18,458 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 20 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 15:22:18,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 206 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 15:22:18,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-03 15:22:18,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-11-03 15:22:18,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 91 states have (on average 1.2417582417582418) internal successors, (113), 92 states have internal predecessors, (113), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-03 15:22:18,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 124 transitions. [2024-11-03 15:22:18,470 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 124 transitions. Word has length 73 [2024-11-03 15:22:18,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 15:22:18,471 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 124 transitions. [2024-11-03 15:22:18,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 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 15:22:18,471 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 124 transitions. [2024-11-03 15:22:18,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 15:22:18,472 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 15:22:18,473 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 15:22:18,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Ended with exit code 0 [2024-11-03 15:22:18,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:18,675 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 15:22:18,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 15:22:18,675 INFO L85 PathProgramCache]: Analyzing trace with hash -632814932, now seen corresponding path program 2 times [2024-11-03 15:22:18,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 15:22:18,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939182649] [2024-11-03 15:22:18,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 15:22:18,676 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 15:22:18,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:18,677 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 15:22:18,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Waiting until timeout for monitored process [2024-11-03 15:22:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 15:22:18,746 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-03 15:22:18,750 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 15:22:19,006 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 181 proven. 22 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2024-11-03 15:22:19,006 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 15:22:19,199 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-03 15:22:19,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2024-11-03 15:22:19,268 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 181 proven. 22 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2024-11-03 15:22:19,268 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 15:22:19,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939182649] [2024-11-03 15:22:19,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1939182649] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 15:22:19,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 15:22:19,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2024-11-03 15:22:19,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756120500] [2024-11-03 15:22:19,268 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 15:22:19,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-03 15:22:19,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 15:22:19,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-03 15:22:19,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-11-03 15:22:19,270 INFO L87 Difference]: Start difference. First operand 98 states and 124 transitions. Second operand has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 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 15:22:19,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 15:22:19,965 INFO L93 Difference]: Finished difference Result 222 states and 284 transitions. [2024-11-03 15:22:19,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-03 15:22:19,967 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 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 107 [2024-11-03 15:22:19,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 15:22:19,968 INFO L225 Difference]: With dead ends: 222 [2024-11-03 15:22:19,968 INFO L226 Difference]: Without dead ends: 144 [2024-11-03 15:22:19,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=316, Invalid=874, Unknown=0, NotChecked=0, Total=1190 [2024-11-03 15:22:19,969 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 86 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 15:22:19,969 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 398 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 15:22:19,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-03 15:22:19,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 125. [2024-11-03 15:22:19,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 118 states have (on average 1.2627118644067796) internal successors, (149), 119 states have internal predecessors, (149), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-03 15:22:19,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 160 transitions. [2024-11-03 15:22:19,988 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 160 transitions. Word has length 107 [2024-11-03 15:22:19,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 15:22:19,988 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 160 transitions. [2024-11-03 15:22:19,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 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 15:22:19,989 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 160 transitions. [2024-11-03 15:22:19,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 15:22:19,990 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 15:22:19,990 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 15:22:19,997 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Ended with exit code 0 [2024-11-03 15:22:20,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:20,190 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 15:22:20,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 15:22:20,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1751109806, now seen corresponding path program 1 times [2024-11-03 15:22:20,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 15:22:20,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114300384] [2024-11-03 15:22:20,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 15:22:20,191 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 15:22:20,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:20,193 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 15:22:20,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Waiting until timeout for monitored process [2024-11-03 15:22:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 15:22:20,250 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-03 15:22:20,252 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 15:22:20,466 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 221 proven. 40 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2024-11-03 15:22:20,467 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 15:22:20,604 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-03 15:22:20,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2024-11-03 15:22:20,648 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 225 proven. 36 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2024-11-03 15:22:20,648 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 15:22:20,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114300384] [2024-11-03 15:22:20,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1114300384] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 15:22:20,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 15:22:20,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2024-11-03 15:22:20,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398714010] [2024-11-03 15:22:20,649 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 15:22:20,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-03 15:22:20,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 15:22:20,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-03 15:22:20,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-03 15:22:20,650 INFO L87 Difference]: Start difference. First operand 125 states and 160 transitions. Second operand has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 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 15:22:21,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 15:22:21,127 INFO L93 Difference]: Finished difference Result 314 states and 402 transitions. [2024-11-03 15:22:21,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-03 15:22:21,127 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 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 107 [2024-11-03 15:22:21,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 15:22:21,128 INFO L225 Difference]: With dead ends: 314 [2024-11-03 15:22:21,129 INFO L226 Difference]: Without dead ends: 261 [2024-11-03 15:22:21,129 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=189, Invalid=867, Unknown=0, NotChecked=0, Total=1056 [2024-11-03 15:22:21,130 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 91 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 15:22:21,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 354 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 15:22:21,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-11-03 15:22:21,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 226. [2024-11-03 15:22:21,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 219 states have (on average 1.264840182648402) internal successors, (277), 220 states have internal predecessors, (277), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-03 15:22:21,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 288 transitions. [2024-11-03 15:22:21,145 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 288 transitions. Word has length 107 [2024-11-03 15:22:21,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 15:22:21,146 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 288 transitions. [2024-11-03 15:22:21,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 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 15:22:21,146 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 288 transitions. [2024-11-03 15:22:21,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 15:22:21,147 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 15:22:21,147 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 15:22:21,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Forceful destruction successful, exit code 0 [2024-11-03 15:22:21,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:21,351 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 15:22:21,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 15:22:21,352 INFO L85 PathProgramCache]: Analyzing trace with hash 111699952, now seen corresponding path program 2 times [2024-11-03 15:22:21,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 15:22:21,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306035278] [2024-11-03 15:22:21,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 15:22:21,352 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 15:22:21,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:21,354 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 15:22:21,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Waiting until timeout for monitored process [2024-11-03 15:22:21,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 15:22:21,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-03 15:22:21,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 15:22:21,710 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 245 proven. 94 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2024-11-03 15:22:21,710 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 15:22:21,959 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-03 15:22:21,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 23 [2024-11-03 15:22:22,059 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 247 proven. 92 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2024-11-03 15:22:22,060 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 15:22:22,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306035278] [2024-11-03 15:22:22,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [306035278] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 15:22:22,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 15:22:22,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2024-11-03 15:22:22,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588907095] [2024-11-03 15:22:22,060 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 15:22:22,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-03 15:22:22,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 15:22:22,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-03 15:22:22,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2024-11-03 15:22:22,061 INFO L87 Difference]: Start difference. First operand 226 states and 288 transitions. Second operand has 24 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 24 states have internal predecessors, (86), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 15:22:22,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 15:22:22,704 INFO L93 Difference]: Finished difference Result 338 states and 431 transitions. [2024-11-03 15:22:22,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-03 15:22:22,704 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 24 states have internal predecessors, (86), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 107 [2024-11-03 15:22:22,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 15:22:22,705 INFO L225 Difference]: With dead ends: 338 [2024-11-03 15:22:22,705 INFO L226 Difference]: Without dead ends: 264 [2024-11-03 15:22:22,706 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=247, Invalid=1085, Unknown=0, NotChecked=0, Total=1332 [2024-11-03 15:22:22,706 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 112 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 15:22:22,707 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 610 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 15:22:22,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-03 15:22:22,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 253. [2024-11-03 15:22:22,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 246 states have (on average 1.2723577235772359) internal successors, (313), 247 states have internal predecessors, (313), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-03 15:22:22,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 324 transitions. [2024-11-03 15:22:22,720 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 324 transitions. Word has length 107 [2024-11-03 15:22:22,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 15:22:22,720 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 324 transitions. [2024-11-03 15:22:22,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 24 states have internal predecessors, (86), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 15:22:22,720 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 324 transitions. [2024-11-03 15:22:22,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 15:22:22,721 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 15:22:22,721 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 15:22:22,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Ended with exit code 0 [2024-11-03 15:22:22,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:22,923 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 15:22:22,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 15:22:22,924 INFO L85 PathProgramCache]: Analyzing trace with hash -681793938, now seen corresponding path program 3 times [2024-11-03 15:22:22,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 15:22:22,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378973411] [2024-11-03 15:22:22,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 15:22:22,924 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 15:22:22,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:22,925 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 15:22:22,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Waiting until timeout for monitored process [2024-11-03 15:22:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 15:22:22,984 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-03 15:22:22,986 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 15:22:23,317 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 224 proven. 160 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-03 15:22:23,317 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 15:22:23,578 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-03 15:22:23,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2024-11-03 15:22:23,657 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 228 proven. 156 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-03 15:22:23,657 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 15:22:23,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378973411] [2024-11-03 15:22:23,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [378973411] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 15:22:23,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 15:22:23,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2024-11-03 15:22:23,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782531209] [2024-11-03 15:22:23,658 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 15:22:23,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-03 15:22:23,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 15:22:23,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-03 15:22:23,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2024-11-03 15:22:23,659 INFO L87 Difference]: Start difference. First operand 253 states and 324 transitions. Second operand has 25 states, 25 states have (on average 3.92) internal successors, (98), 25 states have internal predecessors, (98), 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 15:22:24,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 15:22:24,800 INFO L93 Difference]: Finished difference Result 854 states and 1091 transitions. [2024-11-03 15:22:24,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-03 15:22:24,800 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 25 states have internal predecessors, (98), 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 107 [2024-11-03 15:22:24,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 15:22:24,803 INFO L225 Difference]: With dead ends: 854 [2024-11-03 15:22:24,803 INFO L226 Difference]: Without dead ends: 728 [2024-11-03 15:22:24,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=454, Invalid=2626, Unknown=0, NotChecked=0, Total=3080 [2024-11-03 15:22:24,805 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 145 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-03 15:22:24,805 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 551 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-03 15:22:24,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2024-11-03 15:22:24,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 671. [2024-11-03 15:22:24,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 664 states have (on average 1.2650602409638554) internal successors, (840), 665 states have internal predecessors, (840), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-03 15:22:24,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 851 transitions. [2024-11-03 15:22:24,840 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 851 transitions. Word has length 107 [2024-11-03 15:22:24,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 15:22:24,840 INFO L471 AbstractCegarLoop]: Abstraction has 671 states and 851 transitions. [2024-11-03 15:22:24,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 25 states have internal predecessors, (98), 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 15:22:24,840 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 851 transitions. [2024-11-03 15:22:24,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 15:22:24,842 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 15:22:24,842 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 15:22:24,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Forceful destruction successful, exit code 0 [2024-11-03 15:22:25,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:25,043 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 15:22:25,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 15:22:25,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1775248850, now seen corresponding path program 4 times [2024-11-03 15:22:25,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 15:22:25,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432133115] [2024-11-03 15:22:25,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 15:22:25,043 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 15:22:25,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:25,045 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 15:22:25,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Waiting until timeout for monitored process [2024-11-03 15:22:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 15:22:25,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-03 15:22:25,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 15:22:25,501 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 187 proven. 214 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-03 15:22:25,501 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 15:22:25,728 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-03 15:22:25,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 23 [2024-11-03 15:22:25,890 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 188 proven. 213 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-03 15:22:25,891 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 15:22:25,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432133115] [2024-11-03 15:22:25,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1432133115] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 15:22:25,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 15:22:25,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-11-03 15:22:25,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050344241] [2024-11-03 15:22:25,891 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 15:22:25,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-03 15:22:25,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 15:22:25,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-03 15:22:25,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2024-11-03 15:22:25,892 INFO L87 Difference]: Start difference. First operand 671 states and 851 transitions. Second operand has 26 states, 26 states have (on average 3.923076923076923) internal successors, (102), 26 states have internal predecessors, (102), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 15:22:26,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 15:22:26,497 INFO L93 Difference]: Finished difference Result 923 states and 1170 transitions. [2024-11-03 15:22:26,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-03 15:22:26,498 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.923076923076923) internal successors, (102), 26 states have internal predecessors, (102), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 107 [2024-11-03 15:22:26,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 15:22:26,500 INFO L225 Difference]: With dead ends: 923 [2024-11-03 15:22:26,500 INFO L226 Difference]: Without dead ends: 740 [2024-11-03 15:22:26,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=189, Invalid=1071, Unknown=0, NotChecked=0, Total=1260 [2024-11-03 15:22:26,502 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 128 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 15:22:26,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 492 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 15:22:26,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2024-11-03 15:22:26,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 725. [2024-11-03 15:22:26,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 718 states have (on average 1.266016713091922) internal successors, (909), 719 states have internal predecessors, (909), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-03 15:22:26,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 920 transitions. [2024-11-03 15:22:26,568 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 920 transitions. Word has length 107 [2024-11-03 15:22:26,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 15:22:26,568 INFO L471 AbstractCegarLoop]: Abstraction has 725 states and 920 transitions. [2024-11-03 15:22:26,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.923076923076923) internal successors, (102), 26 states have internal predecessors, (102), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 15:22:26,568 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 920 transitions. [2024-11-03 15:22:26,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 15:22:26,570 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 15:22:26,570 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 11, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 15:22:26,574 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Ended with exit code 0 [2024-11-03 15:22:26,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:26,772 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 15:22:26,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 15:22:26,772 INFO L85 PathProgramCache]: Analyzing trace with hash 696983534, now seen corresponding path program 5 times [2024-11-03 15:22:26,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 15:22:26,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115258728] [2024-11-03 15:22:26,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 15:22:26,773 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 15:22:26,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:26,774 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 15:22:26,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (15)] Waiting until timeout for monitored process [2024-11-03 15:22:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 15:22:26,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-03 15:22:26,838 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 15:22:27,267 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 47 proven. 367 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-03 15:22:27,267 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 15:22:27,589 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-03 15:22:27,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2024-11-03 15:22:27,691 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 51 proven. 363 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-03 15:22:27,692 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 15:22:27,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115258728] [2024-11-03 15:22:27,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [115258728] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 15:22:27,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 15:22:27,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 31 [2024-11-03 15:22:27,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644983061] [2024-11-03 15:22:27,692 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 15:22:27,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-03 15:22:27,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 15:22:27,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-03 15:22:27,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=805, Unknown=0, NotChecked=0, Total=930 [2024-11-03 15:22:27,693 INFO L87 Difference]: Start difference. First operand 725 states and 920 transitions. Second operand has 31 states, 31 states have (on average 3.806451612903226) internal successors, (118), 31 states have internal predecessors, (118), 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 15:22:30,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 15:22:30,622 INFO L93 Difference]: Finished difference Result 4145 states and 5335 transitions. [2024-11-03 15:22:30,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2024-11-03 15:22:30,622 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.806451612903226) internal successors, (118), 31 states have internal predecessors, (118), 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 107 [2024-11-03 15:22:30,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 15:22:30,649 INFO L225 Difference]: With dead ends: 4145 [2024-11-03 15:22:30,649 INFO L226 Difference]: Without dead ends: 3656 [2024-11-03 15:22:30,656 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3171 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1184, Invalid=8518, Unknown=0, NotChecked=0, Total=9702 [2024-11-03 15:22:30,656 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 217 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 1742 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 1745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-03 15:22:30,656 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 643 Invalid, 1745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1742 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-03 15:22:30,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3656 states. [2024-11-03 15:22:30,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3656 to 3187. [2024-11-03 15:22:30,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3187 states, 3180 states have (on average 1.2836477987421384) internal successors, (4082), 3181 states have internal predecessors, (4082), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-03 15:22:30,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3187 states to 3187 states and 4093 transitions. [2024-11-03 15:22:30,911 INFO L78 Accepts]: Start accepts. Automaton has 3187 states and 4093 transitions. Word has length 107 [2024-11-03 15:22:30,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 15:22:30,911 INFO L471 AbstractCegarLoop]: Abstraction has 3187 states and 4093 transitions. [2024-11-03 15:22:30,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.806451612903226) internal successors, (118), 31 states have internal predecessors, (118), 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 15:22:30,911 INFO L276 IsEmpty]: Start isEmpty. Operand 3187 states and 4093 transitions. [2024-11-03 15:22:30,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 15:22:30,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 15:22:30,915 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 15:22:30,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (15)] Forceful destruction successful, exit code 0 [2024-11-03 15:22:31,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:31,115 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 15:22:31,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 15:22:31,116 INFO L85 PathProgramCache]: Analyzing trace with hash 110177520, now seen corresponding path program 6 times [2024-11-03 15:22:31,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 15:22:31,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067186667] [2024-11-03 15:22:31,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 15:22:31,116 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 15:22:31,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:31,118 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 15:22:31,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (16)] Waiting until timeout for monitored process [2024-11-03 15:22:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 15:22:31,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-03 15:22:31,174 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 15:22:31,588 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 7 proven. 392 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-03 15:22:31,588 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 15:22:31,876 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-03 15:22:31,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 23 [2024-11-03 15:22:32,048 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 7 proven. 392 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-03 15:22:32,048 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 15:22:32,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067186667] [2024-11-03 15:22:32,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2067186667] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 15:22:32,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 15:22:32,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2024-11-03 15:22:32,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175306010] [2024-11-03 15:22:32,049 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 15:22:32,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-03 15:22:32,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 15:22:32,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-03 15:22:32,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2024-11-03 15:22:32,050 INFO L87 Difference]: Start difference. First operand 3187 states and 4093 transitions. Second operand has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 28 states have internal predecessors, (108), 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 15:22:32,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 15:22:32,852 INFO L93 Difference]: Finished difference Result 4686 states and 6028 transitions. [2024-11-03 15:22:32,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-03 15:22:32,853 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 28 states have internal predecessors, (108), 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 107 [2024-11-03 15:22:32,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 15:22:32,861 INFO L225 Difference]: With dead ends: 4686 [2024-11-03 15:22:32,862 INFO L226 Difference]: Without dead ends: 3377 [2024-11-03 15:22:32,864 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=146, Invalid=1044, Unknown=0, NotChecked=0, Total=1190 [2024-11-03 15:22:32,865 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 84 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 15:22:32,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 669 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 15:22:32,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3377 states. [2024-11-03 15:22:33,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3377 to 3355. [2024-11-03 15:22:33,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3355 states, 3348 states have (on average 1.2807646356033453) internal successors, (4288), 3349 states have internal predecessors, (4288), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-03 15:22:33,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3355 states to 3355 states and 4299 transitions. [2024-11-03 15:22:33,146 INFO L78 Accepts]: Start accepts. Automaton has 3355 states and 4299 transitions. Word has length 107 [2024-11-03 15:22:33,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 15:22:33,146 INFO L471 AbstractCegarLoop]: Abstraction has 3355 states and 4299 transitions. [2024-11-03 15:22:33,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 28 states have internal predecessors, (108), 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 15:22:33,147 INFO L276 IsEmpty]: Start isEmpty. Operand 3355 states and 4299 transitions. [2024-11-03 15:22:33,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 15:22:33,151 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 15:22:33,151 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 13, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 15:22:33,154 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (16)] Ended with exit code 0 [2024-11-03 15:22:33,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:33,353 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 15:22:33,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 15:22:33,354 INFO L85 PathProgramCache]: Analyzing trace with hash 329032238, now seen corresponding path program 7 times [2024-11-03 15:22:33,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 15:22:33,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337275499] [2024-11-03 15:22:33,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 15:22:33,354 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 15:22:33,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:33,356 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 15:22:33,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (17)] Waiting until timeout for monitored process [2024-11-03 15:22:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 15:22:33,411 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-03 15:22:33,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 15:22:33,730 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 164 proven. 233 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-03 15:22:33,730 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 15:22:33,905 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-03 15:22:33,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 20 [2024-11-03 15:22:34,059 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 164 proven. 233 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-03 15:22:34,060 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 15:22:34,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337275499] [2024-11-03 15:22:34,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [337275499] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 15:22:34,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 15:22:34,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-11-03 15:22:34,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730290739] [2024-11-03 15:22:34,060 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 15:22:34,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-03 15:22:34,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 15:22:34,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-03 15:22:34,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2024-11-03 15:22:34,061 INFO L87 Difference]: Start difference. First operand 3355 states and 4299 transitions. Second operand has 26 states, 26 states have (on average 3.8461538461538463) internal successors, (100), 26 states have internal predecessors, (100), 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 15:22:34,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 15:22:34,785 INFO L93 Difference]: Finished difference Result 7437 states and 9537 transitions. [2024-11-03 15:22:34,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-03 15:22:34,786 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.8461538461538463) internal successors, (100), 26 states have internal predecessors, (100), 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 107 [2024-11-03 15:22:34,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 15:22:34,801 INFO L225 Difference]: With dead ends: 7437 [2024-11-03 15:22:34,801 INFO L226 Difference]: Without dead ends: 5918 [2024-11-03 15:22:34,804 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2024-11-03 15:22:34,804 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 69 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 15:22:34,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 701 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 15:22:34,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5918 states. [2024-11-03 15:22:35,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5918 to 4984. [2024-11-03 15:22:35,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4984 states, 4977 states have (on average 1.276069921639542) internal successors, (6351), 4978 states have internal predecessors, (6351), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-03 15:22:35,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4984 states to 4984 states and 6362 transitions. [2024-11-03 15:22:35,233 INFO L78 Accepts]: Start accepts. Automaton has 4984 states and 6362 transitions. Word has length 107 [2024-11-03 15:22:35,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 15:22:35,233 INFO L471 AbstractCegarLoop]: Abstraction has 4984 states and 6362 transitions. [2024-11-03 15:22:35,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.8461538461538463) internal successors, (100), 26 states have internal predecessors, (100), 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 15:22:35,234 INFO L276 IsEmpty]: Start isEmpty. Operand 4984 states and 6362 transitions. [2024-11-03 15:22:35,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 15:22:35,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 15:22:35,242 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 15:22:35,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (17)] Ended with exit code 0 [2024-11-03 15:22:35,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:35,443 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 15:22:35,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 15:22:35,443 INFO L85 PathProgramCache]: Analyzing trace with hash 642590636, now seen corresponding path program 8 times [2024-11-03 15:22:35,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 15:22:35,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462507314] [2024-11-03 15:22:35,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 15:22:35,443 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 15:22:35,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:35,445 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 15:22:35,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (18)] Waiting until timeout for monitored process [2024-11-03 15:22:35,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 15:22:35,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-03 15:22:35,509 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 15:22:35,750 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 244 proven. 99 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-11-03 15:22:35,751 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 15:22:35,870 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-03 15:22:35,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 20 [2024-11-03 15:22:36,004 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 244 proven. 99 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-11-03 15:22:36,004 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 15:22:36,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462507314] [2024-11-03 15:22:36,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1462507314] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 15:22:36,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 15:22:36,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2024-11-03 15:22:36,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507428128] [2024-11-03 15:22:36,005 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 15:22:36,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-03 15:22:36,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 15:22:36,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-03 15:22:36,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2024-11-03 15:22:36,006 INFO L87 Difference]: Start difference. First operand 4984 states and 6362 transitions. Second operand has 22 states, 22 states have (on average 3.8181818181818183) internal successors, (84), 22 states have internal predecessors, (84), 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 15:22:36,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 15:22:36,604 INFO L93 Difference]: Finished difference Result 8637 states and 11036 transitions. [2024-11-03 15:22:36,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-03 15:22:36,605 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.8181818181818183) internal successors, (84), 22 states have internal predecessors, (84), 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 107 [2024-11-03 15:22:36,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 15:22:36,642 INFO L225 Difference]: With dead ends: 8637 [2024-11-03 15:22:36,642 INFO L226 Difference]: Without dead ends: 6249 [2024-11-03 15:22:36,649 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2024-11-03 15:22:36,650 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 39 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 15:22:36,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 469 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 15:22:36,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6249 states. [2024-11-03 15:22:37,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6249 to 5572. [2024-11-03 15:22:37,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5572 states, 5565 states have (on average 1.2727762803234501) internal successors, (7083), 5566 states have internal predecessors, (7083), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-03 15:22:37,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5572 states to 5572 states and 7094 transitions. [2024-11-03 15:22:37,032 INFO L78 Accepts]: Start accepts. Automaton has 5572 states and 7094 transitions. Word has length 107 [2024-11-03 15:22:37,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 15:22:37,032 INFO L471 AbstractCegarLoop]: Abstraction has 5572 states and 7094 transitions. [2024-11-03 15:22:37,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.8181818181818183) internal successors, (84), 22 states have internal predecessors, (84), 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 15:22:37,033 INFO L276 IsEmpty]: Start isEmpty. Operand 5572 states and 7094 transitions. [2024-11-03 15:22:37,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 15:22:37,039 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 15:22:37,039 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 15:22:37,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (18)] Forceful destruction successful, exit code 0 [2024-11-03 15:22:37,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:37,241 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 15:22:37,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 15:22:37,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1030632236, now seen corresponding path program 9 times [2024-11-03 15:22:37,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 15:22:37,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100146941] [2024-11-03 15:22:37,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 15:22:37,243 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 15:22:37,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:37,244 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 15:22:37,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (19)] Waiting until timeout for monitored process [2024-11-03 15:22:37,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-03 15:22:37,300 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-03 15:22:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-03 15:22:37,356 INFO L130 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2024-11-03 15:22:37,356 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-03 15:22:37,357 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-03 15:22:37,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (19)] Ended with exit code 0 [2024-11-03 15:22:37,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 15:22:37,562 INFO L407 BasicCegarLoop]: Path program histogram: [9, 2, 2, 1, 1, 1, 1, 1] [2024-11-03 15:22:37,600 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-03 15:22:37,602 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:22:37 BoogieIcfgContainer [2024-11-03 15:22:37,603 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-03 15:22:37,603 INFO L158 Benchmark]: Toolchain (without parser) took 22818.44ms. Allocated memory was 255.9MB in the beginning and 738.2MB in the end (delta: 482.3MB). Free memory was 199.6MB in the beginning and 455.2MB in the end (delta: -255.6MB). Peak memory consumption was 227.8MB. Max. memory is 8.0GB. [2024-11-03 15:22:37,603 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 208.6MB. There was no memory consumed. Max. memory is 8.0GB. [2024-11-03 15:22:37,603 INFO L158 Benchmark]: CACSL2BoogieTranslator took 165.30ms. Allocated memory is still 255.9MB. Free memory was 199.3MB in the beginning and 186.0MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2024-11-03 15:22:37,604 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.40ms. Allocated memory is still 255.9MB. Free memory was 186.0MB in the beginning and 184.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-11-03 15:22:37,604 INFO L158 Benchmark]: Boogie Preprocessor took 35.45ms. Allocated memory is still 255.9MB. Free memory was 184.1MB in the beginning and 182.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-11-03 15:22:37,604 INFO L158 Benchmark]: RCFGBuilder took 372.71ms. Allocated memory is still 255.9MB. Free memory was 182.0MB in the beginning and 215.9MB in the end (delta: -34.0MB). Peak memory consumption was 12.5MB. Max. memory is 8.0GB. [2024-11-03 15:22:37,604 INFO L158 Benchmark]: TraceAbstraction took 22215.30ms. Allocated memory was 255.9MB in the beginning and 738.2MB in the end (delta: 482.3MB). Free memory was 215.4MB in the beginning and 455.2MB in the end (delta: -239.8MB). Peak memory consumption was 242.6MB. Max. memory is 8.0GB. [2024-11-03 15:22:37,605 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 208.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 165.30ms. Allocated memory is still 255.9MB. Free memory was 199.3MB in the beginning and 186.0MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.40ms. Allocated memory is still 255.9MB. Free memory was 186.0MB in the beginning and 184.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.45ms. Allocated memory is still 255.9MB. Free memory was 184.1MB in the beginning and 182.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 372.71ms. Allocated memory is still 255.9MB. Free memory was 182.0MB in the beginning and 215.9MB in the end (delta: -34.0MB). Peak memory consumption was 12.5MB. Max. memory is 8.0GB. * TraceAbstraction took 22215.30ms. Allocated memory was 255.9MB in the beginning and 738.2MB in the end (delta: 482.3MB). Free memory was 215.4MB in the beginning and 455.2MB in the end (delta: -239.8MB). Peak memory consumption was 242.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 20]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L56] int x, y, z, w; [L57] x = __VERIFIER_nondet_int() [L58] y = __VERIFIER_nondet_int() [L59] z = __VERIFIER_nondet_int() [L60] w = __VERIFIER_nondet_int() [L61] CALL, EXPR solve(x, y, z, w) [L44] CALL, EXPR check_domain(s0) VAL [\old(x)=2] [L28] COND TRUE x >= 0 && x <= 4 [L28] return 1; VAL [\old(x)=2, \result=1] [L44] RET, EXPR check_domain(s0) VAL [s0=2, s1=0, s2=2, s3=0] [L44] EXPR check_domain(s0) && check_domain(s1) VAL [s0=2, s1=0, s2=2, s3=0] [L44] CALL, EXPR check_domain(s1) VAL [\old(x)=0] [L28] COND TRUE x >= 0 && x <= 4 [L28] return 1; VAL [\old(x)=0, \result=1] [L44] RET, EXPR check_domain(s1) VAL [s0=2, s1=0, s2=2, s3=0] [L44] EXPR check_domain(s0) && check_domain(s1) VAL [s0=2, s1=0, s2=2, s3=0] [L44] EXPR check_domain(s0) && check_domain(s1) && check_domain(s2) VAL [s0=2, s1=0, s2=2, s3=0] [L44] CALL, EXPR check_domain(s2) VAL [\old(x)=2] [L28] COND TRUE x >= 0 && x <= 4 [L28] return 1; VAL [\old(x)=2, \result=1] [L44] RET, EXPR check_domain(s2) VAL [s0=2, s1=0, s2=2, s3=0] [L44] EXPR check_domain(s0) && check_domain(s1) && check_domain(s2) VAL [s0=2, s1=0, s2=2, s3=0] [L44-L45] check_domain(s0) && check_domain(s1) && check_domain(s2) && check_domain(s3) VAL [s0=2, s1=0, s2=2, s3=0] [L45] CALL, EXPR check_domain(s3) VAL [\old(x)=0] [L28] COND TRUE x >= 0 && x <= 4 [L28] return 1; VAL [\old(x)=0, \result=1] [L45] RET, EXPR check_domain(s3) VAL [s0=2, s1=0, s2=2, s3=0] [L44-L45] check_domain(s0) && check_domain(s1) && check_domain(s2) && check_domain(s3) VAL [s0=2, s1=0, s2=2, s3=0] [L44-L45] COND TRUE check_domain(s0) && check_domain(s1) && check_domain(s2) && check_domain(s3) [L46] CALL check_sum(s0, s1, s2, s3) [L33] int s[4] = {s0, s1, s2, s3}; [L33] int s[4] = {s0, s1, s2, s3}; [L33] int s[4] = {s0, s1, s2, s3}; [L33] int s[4] = {s0, s1, s2, s3}; [L33] int s[4] = {s0, s1, s2, s3}; [L34] int i = 0; VAL [i=0, s={6:0}] [L34] COND TRUE i < 4 [L35] int sum = 0; [L36] int j = 0; VAL [i=0, j=0, s={6:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=0, j=1, s={6:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND TRUE s[j] == i [L37] sum++ VAL [i=0, j=1, s={6:0}, sum=1] [L36] j++ VAL [i=0, j=2, s={6:0}, sum=1] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=0, j=3, s={6:0}, sum=1] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND TRUE s[j] == i [L37] sum++ VAL [i=0, j=3, s={6:0}, sum=2] [L36] j++ VAL [i=0, j=4, s={6:0}, sum=2] [L36] COND FALSE !(j < 4) VAL [i=0, s={6:0}, sum=2] [L38] EXPR s[i] [L38] COND FALSE !(sum != s[i]) [L34] i++ VAL [i=1, s={6:0}] [L34] COND TRUE i < 4 [L35] int sum = 0; [L36] int j = 0; VAL [i=1, j=0, s={6:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=1, j=1, s={6:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=1, j=2, s={6:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=1, j=3, s={6:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=1, j=4, s={6:0}, sum=0] [L36] COND FALSE !(j < 4) VAL [i=1, s={6:0}, sum=0] [L38] EXPR s[i] [L38] COND FALSE !(sum != s[i]) [L34] i++ VAL [i=2, s={6:0}] [L34] COND TRUE i < 4 [L35] int sum = 0; [L36] int j = 0; VAL [i=2, j=0, s={6:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND TRUE s[j] == i [L37] sum++ VAL [i=2, j=0, s={6:0}, sum=1] [L36] j++ VAL [i=2, j=1, s={6:0}, sum=1] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=2, j=2, s={6:0}, sum=1] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND TRUE s[j] == i [L37] sum++ VAL [i=2, j=2, s={6:0}, sum=2] [L36] j++ VAL [i=2, j=3, s={6:0}, sum=2] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=2, j=4, s={6:0}, sum=2] [L36] COND FALSE !(j < 4) VAL [i=2, s={6:0}, sum=2] [L38] EXPR s[i] [L38] COND FALSE !(sum != s[i]) [L34] i++ VAL [i=3, s={6:0}] [L34] COND TRUE i < 4 [L35] int sum = 0; [L36] int j = 0; VAL [i=3, j=0, s={6:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=3, j=1, s={6:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=3, j=2, s={6:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=3, j=3, s={6:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=3, j=4, s={6:0}, sum=0] [L36] COND FALSE !(j < 4) VAL [i=3, s={6:0}, sum=0] [L38] EXPR s[i] [L38] COND FALSE !(sum != s[i]) [L34] i++ VAL [i=4, s={6:0}] [L34] COND FALSE !(i < 4) VAL [s={6:0}] [L40] return 1; [L33] int s[4] = {s0, s1, s2, s3}; [L40] return 1; VAL [\result=1] [L46] RET check_sum(s0, s1, s2, s3) [L46] COND TRUE check_sum(s0, s1, s2, s3) [L47] return 1; VAL [\result=1] [L61] RET, EXPR solve(x, y, z, w) [L61] CALL __VERIFIER_assert(!solve(x, y, z, w)) [L18] COND TRUE !(cond) [L20] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 22.1s, OverallIterations: 18, TraceHistogramMax: 16, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 9.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1039 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1039 mSDsluCounter, 6214 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5507 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6815 IncrementalHoareTripleChecker+Invalid, 6844 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 707 mSDtfsCounter, 6815 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2670 GetRequests, 2276 SyntacticMatches, 0 SemanticMatches, 394 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5654 ImplicationChecksByTransitivity, 6.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5572occurred in iteration=17, InterpolantAutomatonStates: 324, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 17 MinimizatonAttempts, 2241 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 6.5s InterpolantComputationTime, 1378 NumberOfCodeBlocks, 1378 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 2508 ConstructedInterpolants, 0 QuantifiedInterpolants, 11621 SizeOfPredicates, 61 NumberOfNonLiveVariables, 2628 ConjunctsInSsa, 167 ConjunctsInUnsatCore, 34 InterpolantComputations, 12 PerfectInterpolantSequences, 5821/9184 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-03 15:22:37,626 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...