/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-63.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 11:07:22,898 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 11:07:22,938 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 11:07:22,942 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 11:07:22,942 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 11:07:22,959 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 11:07:22,959 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 11:07:22,960 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 11:07:22,960 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 11:07:22,960 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 11:07:22,960 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 11:07:22,961 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 11:07:22,961 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 11:07:22,961 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 11:07:22,961 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 11:07:22,962 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 11:07:22,962 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 11:07:22,962 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 11:07:22,962 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 11:07:22,963 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 11:07:22,963 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 11:07:22,965 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 11:07:22,966 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 11:07:22,966 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 11:07:22,969 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 11:07:22,969 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 11:07:22,969 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 11:07:22,970 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 11:07:22,971 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 11:07:22,971 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 11:07:22,972 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 11:07:22,972 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 11:07:22,972 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 11:07:22,972 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 11:07:22,972 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 11:07:22,972 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 11:07:22,972 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 11:07:22,972 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 11:07:22,973 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 11:07:22,973 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 11:07:22,973 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 11:07:22,973 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 11:07:22,973 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 11:07:22,973 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 11:07:22,974 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 11:07:22,974 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 11:07:22,974 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 11:07:23,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 11:07:23,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 11:07:23,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 11:07:23,172 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 11:07:23,172 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 11:07:23,173 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-63.i [2023-12-16 11:07:24,220 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 11:07:24,453 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 11:07:24,454 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-63.i [2023-12-16 11:07:24,465 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff91a99f7/c1d36b549b5a4d0fadaec9fc6bdc9a40/FLAG2636de7b0 [2023-12-16 11:07:24,475 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff91a99f7/c1d36b549b5a4d0fadaec9fc6bdc9a40 [2023-12-16 11:07:24,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 11:07:24,478 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 11:07:24,478 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 11:07:24,478 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 11:07:24,482 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 11:07:24,482 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 11:07:24" (1/1) ... [2023-12-16 11:07:24,483 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5db7b222 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:07:24, skipping insertion in model container [2023-12-16 11:07:24,483 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 11:07:24" (1/1) ... [2023-12-16 11:07:24,524 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 11:07:24,634 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-63.i[916,929] [2023-12-16 11:07:24,732 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 11:07:24,748 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 11:07:24,755 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-63.i[916,929] [2023-12-16 11:07:24,853 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 11:07:24,867 INFO L206 MainTranslator]: Completed translation [2023-12-16 11:07:24,867 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:07:24 WrapperNode [2023-12-16 11:07:24,868 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 11:07:24,868 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 11:07:24,868 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 11:07:24,869 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 11:07:24,873 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:07:24" (1/1) ... [2023-12-16 11:07:24,885 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:07:24" (1/1) ... [2023-12-16 11:07:24,916 INFO L138 Inliner]: procedures = 27, calls = 87, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 458 [2023-12-16 11:07:24,916 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 11:07:24,917 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 11:07:24,917 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 11:07:24,917 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 11:07:24,930 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:07:24" (1/1) ... [2023-12-16 11:07:24,930 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:07:24" (1/1) ... [2023-12-16 11:07:24,936 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:07:24" (1/1) ... [2023-12-16 11:07:24,967 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 11:07:24,967 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:07:24" (1/1) ... [2023-12-16 11:07:24,967 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:07:24" (1/1) ... [2023-12-16 11:07:24,989 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:07:24" (1/1) ... [2023-12-16 11:07:25,007 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:07:24" (1/1) ... [2023-12-16 11:07:25,011 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:07:24" (1/1) ... [2023-12-16 11:07:25,013 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:07:24" (1/1) ... [2023-12-16 11:07:25,018 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 11:07:25,019 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 11:07:25,019 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 11:07:25,019 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 11:07:25,020 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:07:24" (1/1) ... [2023-12-16 11:07:25,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 11:07:25,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 11:07:25,057 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) [2023-12-16 11:07:25,073 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 [2023-12-16 11:07:25,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 11:07:25,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 11:07:25,083 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 11:07:25,084 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 11:07:25,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 11:07:25,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 11:07:25,171 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 11:07:25,172 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 11:07:40,268 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 11:07:40,305 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 11:07:40,305 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 11:07:40,305 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 11:07:40 BoogieIcfgContainer [2023-12-16 11:07:40,305 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 11:07:40,307 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 11:07:40,307 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 11:07:40,309 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 11:07:40,309 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 11:07:24" (1/3) ... [2023-12-16 11:07:40,309 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6abff337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 11:07:40, skipping insertion in model container [2023-12-16 11:07:40,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:07:24" (2/3) ... [2023-12-16 11:07:40,310 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6abff337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 11:07:40, skipping insertion in model container [2023-12-16 11:07:40,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 11:07:40" (3/3) ... [2023-12-16 11:07:40,317 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-63.i [2023-12-16 11:07:40,336 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 11:07:40,336 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 11:07:40,374 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 11:07:40,387 INFO L357 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, mHoare=true, 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;@7a3f753d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 11:07:40,387 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 11:07:40,392 INFO L276 IsEmpty]: Start isEmpty. Operand has 196 states, 119 states have (on average 1.5378151260504203) internal successors, (183), 120 states have internal predecessors, (183), 74 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2023-12-16 11:07:40,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2023-12-16 11:07:40,413 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:07:40,415 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:07:40,415 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:07:40,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:07:40,421 INFO L85 PathProgramCache]: Analyzing trace with hash 640937614, now seen corresponding path program 1 times [2023-12-16 11:07:40,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:07:40,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877200196] [2023-12-16 11:07:40,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:07:40,437 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:07:40,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:07:40,453 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:07:40,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 11:07:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:07:41,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 747 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 11:07:41,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:07:41,694 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 2874 proven. 0 refuted. 0 times theorem prover too weak. 7930 trivial. 0 not checked. [2023-12-16 11:07:41,695 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:07:41,695 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:07:41,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877200196] [2023-12-16 11:07:41,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877200196] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:07:41,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:07:41,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 11:07:41,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137528365] [2023-12-16 11:07:41,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:07:41,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 11:07:41,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:07:41,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 11:07:41,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 11:07:41,738 INFO L87 Difference]: Start difference. First operand has 196 states, 119 states have (on average 1.5378151260504203) internal successors, (183), 120 states have internal predecessors, (183), 74 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) Second operand has 2 states, 2 states have (on average 49.5) internal successors, (99), 2 states have internal predecessors, (99), 2 states have call successors, (74), 2 states have call predecessors, (74), 2 states have return successors, (74), 2 states have call predecessors, (74), 2 states have call successors, (74) [2023-12-16 11:07:45,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.50s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 11:07:45,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:07:45,301 INFO L93 Difference]: Finished difference Result 389 states and 734 transitions. [2023-12-16 11:07:45,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 11:07:45,341 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 49.5) internal successors, (99), 2 states have internal predecessors, (99), 2 states have call successors, (74), 2 states have call predecessors, (74), 2 states have return successors, (74), 2 states have call predecessors, (74), 2 states have call successors, (74) Word has length 462 [2023-12-16 11:07:45,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:07:45,347 INFO L225 Difference]: With dead ends: 389 [2023-12-16 11:07:45,347 INFO L226 Difference]: Without dead ends: 194 [2023-12-16 11:07:45,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 11:07:45,353 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-16 11:07:45,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 321 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-16 11:07:45,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-12-16 11:07:45,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2023-12-16 11:07:45,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 118 states have (on average 1.4915254237288136) internal successors, (176), 118 states have internal predecessors, (176), 74 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2023-12-16 11:07:45,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 324 transitions. [2023-12-16 11:07:45,405 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 324 transitions. Word has length 462 [2023-12-16 11:07:45,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:07:45,406 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 324 transitions. [2023-12-16 11:07:45,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 49.5) internal successors, (99), 2 states have internal predecessors, (99), 2 states have call successors, (74), 2 states have call predecessors, (74), 2 states have return successors, (74), 2 states have call predecessors, (74), 2 states have call successors, (74) [2023-12-16 11:07:45,406 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 324 transitions. [2023-12-16 11:07:45,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2023-12-16 11:07:45,413 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:07:45,413 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:07:45,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-16 11:07:45,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:07:45,641 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:07:45,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:07:45,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1566067106, now seen corresponding path program 1 times [2023-12-16 11:07:45,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:07:45,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358998710] [2023-12-16 11:07:45,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:07:45,643 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:07:45,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:07:45,645 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:07:45,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 11:07:46,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:07:46,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 747 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 11:07:46,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:07:46,982 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2023-12-16 11:07:46,982 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:07:46,982 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:07:46,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358998710] [2023-12-16 11:07:46,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [358998710] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:07:46,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:07:46,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 11:07:46,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553693171] [2023-12-16 11:07:46,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:07:46,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 11:07:46,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:07:46,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 11:07:46,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 11:07:46,986 INFO L87 Difference]: Start difference. First operand 194 states and 324 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2023-12-16 11:07:51,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.55s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 11:07:51,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:07:51,518 INFO L93 Difference]: Finished difference Result 434 states and 719 transitions. [2023-12-16 11:07:51,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 11:07:51,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) Word has length 462 [2023-12-16 11:07:51,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:07:51,522 INFO L225 Difference]: With dead ends: 434 [2023-12-16 11:07:51,522 INFO L226 Difference]: Without dead ends: 241 [2023-12-16 11:07:51,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 460 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 11:07:51,525 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 180 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-16 11:07:51,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 585 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-16 11:07:51,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-12-16 11:07:51,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 240. [2023-12-16 11:07:51,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 137 states have (on average 1.416058394160584) internal successors, (194), 138 states have internal predecessors, (194), 100 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-16 11:07:51,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 394 transitions. [2023-12-16 11:07:51,551 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 394 transitions. Word has length 462 [2023-12-16 11:07:51,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:07:51,552 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 394 transitions. [2023-12-16 11:07:51,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2023-12-16 11:07:51,552 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 394 transitions. [2023-12-16 11:07:51,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2023-12-16 11:07:51,558 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:07:51,558 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:07:51,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-16 11:07:51,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:07:51,785 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:07:51,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:07:51,785 INFO L85 PathProgramCache]: Analyzing trace with hash -984156201, now seen corresponding path program 1 times [2023-12-16 11:07:51,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:07:51,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [238145310] [2023-12-16 11:07:51,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:07:51,786 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:07:51,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:07:51,788 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:07:51,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 11:07:52,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:07:52,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 11:07:52,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:07:54,106 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2023-12-16 11:07:54,106 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:07:54,106 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:07:54,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [238145310] [2023-12-16 11:07:54,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [238145310] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:07:54,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:07:54,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 11:07:54,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061192977] [2023-12-16 11:07:54,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:07:54,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 11:07:54,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:07:54,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 11:07:54,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 11:07:54,109 INFO L87 Difference]: Start difference. First operand 240 states and 394 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2023-12-16 11:07:58,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 11:08:02,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 11:08:03,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 11:08:03,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:08:03,835 INFO L93 Difference]: Finished difference Result 632 states and 1040 transitions. [2023-12-16 11:08:03,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 11:08:03,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) Word has length 463 [2023-12-16 11:08:03,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:08:03,843 INFO L225 Difference]: With dead ends: 632 [2023-12-16 11:08:03,844 INFO L226 Difference]: Without dead ends: 435 [2023-12-16 11:08:03,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 11:08:03,847 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 114 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2023-12-16 11:08:03,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 624 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 2 Unknown, 0 Unchecked, 9.7s Time] [2023-12-16 11:08:03,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2023-12-16 11:08:03,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 432. [2023-12-16 11:08:03,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 253 states have (on average 1.4308300395256917) internal successors, (362), 254 states have internal predecessors, (362), 174 states have call successors, (174), 4 states have call predecessors, (174), 4 states have return successors, (174), 173 states have call predecessors, (174), 174 states have call successors, (174) [2023-12-16 11:08:03,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 710 transitions. [2023-12-16 11:08:03,914 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 710 transitions. Word has length 463 [2023-12-16 11:08:03,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:08:03,919 INFO L495 AbstractCegarLoop]: Abstraction has 432 states and 710 transitions. [2023-12-16 11:08:03,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2023-12-16 11:08:03,920 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 710 transitions. [2023-12-16 11:08:03,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2023-12-16 11:08:03,922 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:08:03,923 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-16 11:08:03,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-16 11:08:04,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:08:04,127 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:08:04,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:08:04,127 INFO L85 PathProgramCache]: Analyzing trace with hash 352129946, now seen corresponding path program 1 times [2023-12-16 11:08:04,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:08:04,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2060475106] [2023-12-16 11:08:04,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:08:04,128 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:08:04,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:08:04,136 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:08:04,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 11:08:05,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:08:05,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 11:08:05,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:08:05,671 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 5365 proven. 93 refuted. 0 times theorem prover too weak. 5346 trivial. 0 not checked. [2023-12-16 11:08:05,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:08:06,097 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 126 proven. 93 refuted. 0 times theorem prover too weak. 10585 trivial. 0 not checked. [2023-12-16 11:08:06,099 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:08:06,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2060475106] [2023-12-16 11:08:06,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2060475106] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 11:08:06,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 11:08:06,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 11:08:06,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717821525] [2023-12-16 11:08:06,102 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 11:08:06,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 11:08:06,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:08:06,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 11:08:06,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 11:08:06,105 INFO L87 Difference]: Start difference. First operand 432 states and 710 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 2 states have call successors, (105), 2 states have call predecessors, (105), 4 states have return successors, (106), 2 states have call predecessors, (106), 2 states have call successors, (106) [2023-12-16 11:08:10,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.04s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 11:08:12,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 11:08:13,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:08:13,489 INFO L93 Difference]: Finished difference Result 866 states and 1410 transitions. [2023-12-16 11:08:13,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 11:08:13,505 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 2 states have call successors, (105), 2 states have call predecessors, (105), 4 states have return successors, (106), 2 states have call predecessors, (106), 2 states have call successors, (106) Word has length 464 [2023-12-16 11:08:13,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:08:13,508 INFO L225 Difference]: With dead ends: 866 [2023-12-16 11:08:13,509 INFO L226 Difference]: Without dead ends: 477 [2023-12-16 11:08:13,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 930 GetRequests, 920 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 11:08:13,510 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 186 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-12-16 11:08:13,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 719 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-12-16 11:08:13,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2023-12-16 11:08:13,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 466. [2023-12-16 11:08:13,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 269 states have (on average 1.3977695167286246) internal successors, (376), 270 states have internal predecessors, (376), 190 states have call successors, (190), 6 states have call predecessors, (190), 6 states have return successors, (190), 189 states have call predecessors, (190), 190 states have call successors, (190) [2023-12-16 11:08:13,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 756 transitions. [2023-12-16 11:08:13,543 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 756 transitions. Word has length 464 [2023-12-16 11:08:13,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:08:13,544 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 756 transitions. [2023-12-16 11:08:13,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 2 states have call successors, (105), 2 states have call predecessors, (105), 4 states have return successors, (106), 2 states have call predecessors, (106), 2 states have call successors, (106) [2023-12-16 11:08:13,544 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 756 transitions. [2023-12-16 11:08:13,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2023-12-16 11:08:13,548 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:08:13,548 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-16 11:08:13,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 11:08:13,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:08:13,759 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:08:13,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:08:13,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1907889391, now seen corresponding path program 1 times [2023-12-16 11:08:13,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:08:13,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1154823196] [2023-12-16 11:08:13,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:08:13,761 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:08:13,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:08:13,762 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:08:13,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 11:08:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:08:14,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 11:08:14,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:08:15,365 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 5469 proven. 105 refuted. 0 times theorem prover too weak. 5230 trivial. 0 not checked. [2023-12-16 11:08:15,366 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:08:15,885 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 114 proven. 105 refuted. 0 times theorem prover too weak. 10585 trivial. 0 not checked. [2023-12-16 11:08:15,885 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:08:15,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1154823196] [2023-12-16 11:08:15,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1154823196] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 11:08:15,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 11:08:15,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 11:08:15,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442550773] [2023-12-16 11:08:15,886 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 11:08:15,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 11:08:15,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:08:15,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 11:08:15,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 11:08:15,887 INFO L87 Difference]: Start difference. First operand 466 states and 756 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (109), 2 states have call predecessors, (109), 4 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) [2023-12-16 11:08:21,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 11:08:22,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:08:22,051 INFO L93 Difference]: Finished difference Result 885 states and 1420 transitions. [2023-12-16 11:08:22,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 11:08:22,057 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (109), 2 states have call predecessors, (109), 4 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) Word has length 465 [2023-12-16 11:08:22,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:08:22,063 INFO L225 Difference]: With dead ends: 885 [2023-12-16 11:08:22,063 INFO L226 Difference]: Without dead ends: 488 [2023-12-16 11:08:22,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 932 GetRequests, 922 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 11:08:22,065 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 158 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-16 11:08:22,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 730 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-16 11:08:22,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-12-16 11:08:22,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 478. [2023-12-16 11:08:22,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 278 states have (on average 1.3633093525179856) internal successors, (379), 279 states have internal predecessors, (379), 190 states have call successors, (190), 9 states have call predecessors, (190), 9 states have return successors, (190), 189 states have call predecessors, (190), 190 states have call successors, (190) [2023-12-16 11:08:22,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 759 transitions. [2023-12-16 11:08:22,099 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 759 transitions. Word has length 465 [2023-12-16 11:08:22,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:08:22,101 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 759 transitions. [2023-12-16 11:08:22,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (109), 2 states have call predecessors, (109), 4 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) [2023-12-16 11:08:22,101 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 759 transitions. [2023-12-16 11:08:22,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2023-12-16 11:08:22,109 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:08:22,109 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-16 11:08:22,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-16 11:08:22,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:08:22,319 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:08:22,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:08:22,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1043683959, now seen corresponding path program 1 times [2023-12-16 11:08:22,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:08:22,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [230422196] [2023-12-16 11:08:22,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:08:22,321 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:08:22,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:08:22,322 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:08:22,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 11:08:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:08:23,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 11:08:23,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:08:26,019 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2023-12-16 11:08:26,019 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:08:26,019 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:08:26,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [230422196] [2023-12-16 11:08:26,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [230422196] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:08:26,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:08:26,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 11:08:26,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124617464] [2023-12-16 11:08:26,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:08:26,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 11:08:26,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:08:26,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 11:08:26,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 11:08:26,021 INFO L87 Difference]: Start difference. First operand 478 states and 759 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2023-12-16 11:08:30,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.15s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 11:08:34,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 11:08:34,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:08:34,333 INFO L93 Difference]: Finished difference Result 1070 states and 1712 transitions. [2023-12-16 11:08:34,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 11:08:34,374 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) Word has length 467 [2023-12-16 11:08:34,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:08:34,378 INFO L225 Difference]: With dead ends: 1070 [2023-12-16 11:08:34,378 INFO L226 Difference]: Without dead ends: 665 [2023-12-16 11:08:34,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 463 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 11:08:34,380 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 260 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 149 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-12-16 11:08:34,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 1097 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 176 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2023-12-16 11:08:34,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2023-12-16 11:08:34,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 633. [2023-12-16 11:08:34,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 399 states have (on average 1.4335839598997493) internal successors, (572), 399 states have internal predecessors, (572), 222 states have call successors, (222), 11 states have call predecessors, (222), 11 states have return successors, (222), 222 states have call predecessors, (222), 222 states have call successors, (222) [2023-12-16 11:08:34,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1016 transitions. [2023-12-16 11:08:34,437 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1016 transitions. Word has length 467 [2023-12-16 11:08:34,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:08:34,437 INFO L495 AbstractCegarLoop]: Abstraction has 633 states and 1016 transitions. [2023-12-16 11:08:34,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2023-12-16 11:08:34,438 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1016 transitions. [2023-12-16 11:08:34,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2023-12-16 11:08:34,440 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:08:34,440 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-16 11:08:34,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 11:08:34,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:08:34,645 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:08:34,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:08:34,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1630489973, now seen corresponding path program 1 times [2023-12-16 11:08:34,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:08:34,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1510616083] [2023-12-16 11:08:34,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:08:34,646 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:08:34,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:08:34,652 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:08:34,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-16 11:08:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:08:35,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 11:08:35,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:08:35,784 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2023-12-16 11:08:35,784 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:08:35,785 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:08:35,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1510616083] [2023-12-16 11:08:35,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1510616083] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:08:35,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:08:35,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 11:08:35,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171329174] [2023-12-16 11:08:35,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:08:35,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 11:08:35,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:08:35,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 11:08:35,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 11:08:35,786 INFO L87 Difference]: Start difference. First operand 633 states and 1016 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) Received shutdown request... [2023-12-16 11:08:39,423 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 11:08:39,460 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 11:08:39,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.75s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-16 11:08:39,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 11:08:39,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 11:08:39,689 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 29 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-16 11:08:39,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 894 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-16 11:08:39,690 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 11:08:39,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-16 11:08:39,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:08:39,892 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (633states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (279 states constructed, input type IntersectNwa). [2023-12-16 11:08:39,895 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:08:39,897 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 11:08:39,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 11:08:39 BoogieIcfgContainer [2023-12-16 11:08:39,898 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 11:08:39,898 INFO L158 Benchmark]: Toolchain (without parser) took 75420.73ms. Allocated memory is still 282.1MB. Free memory was 237.9MB in the beginning and 135.6MB in the end (delta: 102.3MB). Peak memory consumption was 103.0MB. Max. memory is 8.0GB. [2023-12-16 11:08:39,898 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 234.9MB. Free memory is still 186.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 11:08:39,898 INFO L158 Benchmark]: CACSL2BoogieTranslator took 389.48ms. Allocated memory is still 282.1MB. Free memory was 237.6MB in the beginning and 214.2MB in the end (delta: 23.4MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-16 11:08:39,899 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.85ms. Allocated memory is still 282.1MB. Free memory was 214.2MB in the beginning and 210.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-16 11:08:39,899 INFO L158 Benchmark]: Boogie Preprocessor took 101.60ms. Allocated memory is still 282.1MB. Free memory was 210.0MB in the beginning and 203.7MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-16 11:08:39,899 INFO L158 Benchmark]: RCFGBuilder took 15286.56ms. Allocated memory is still 282.1MB. Free memory was 203.7MB in the beginning and 209.1MB in the end (delta: -5.4MB). Peak memory consumption was 17.5MB. Max. memory is 8.0GB. [2023-12-16 11:08:39,899 INFO L158 Benchmark]: TraceAbstraction took 59591.25ms. Allocated memory is still 282.1MB. Free memory was 208.0MB in the beginning and 135.6MB in the end (delta: 72.4MB). Peak memory consumption was 71.9MB. Max. memory is 8.0GB. [2023-12-16 11:08:39,901 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 234.9MB. Free memory is still 186.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 389.48ms. Allocated memory is still 282.1MB. Free memory was 237.6MB in the beginning and 214.2MB in the end (delta: 23.4MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 47.85ms. Allocated memory is still 282.1MB. Free memory was 214.2MB in the beginning and 210.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 101.60ms. Allocated memory is still 282.1MB. Free memory was 210.0MB in the beginning and 203.7MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * RCFGBuilder took 15286.56ms. Allocated memory is still 282.1MB. Free memory was 203.7MB in the beginning and 209.1MB in the end (delta: -5.4MB). Peak memory consumption was 17.5MB. Max. memory is 8.0GB. * TraceAbstraction took 59591.25ms. Allocated memory is still 282.1MB. Free memory was 208.0MB in the beginning and 135.6MB in the end (delta: 72.4MB). Peak memory consumption was 71.9MB. 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 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (633states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (279 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 196 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 59.5s, OverallIterations: 7, TraceHistogramMax: 74, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 43.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 1007 SdHoareTripleChecker+Valid, 43.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 927 mSDsluCounter, 4970 SdHoareTripleChecker+Invalid, 42.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2736 mSDsCounter, 253 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1399 IncrementalHoareTripleChecker+Invalid, 1655 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 253 mSolverCounterUnsat, 2234 mSDtfsCounter, 1399 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4182 GetRequests, 4151 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=633occurred in iteration=6, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 6 MinimizatonAttempts, 57 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 6.4s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 3250 NumberOfCodeBlocks, 3250 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 4170 ConstructedInterpolants, 1 QuantifiedInterpolants, 9518 SizeOfPredicates, 10 NumberOfNonLiveVariables, 5243 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 96840/97236 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 could not prove your program: Timeout Completed graceful shutdown