/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_fillercodestructure_filler-pe-cn_file-60.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 08:43:32,840 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 08:43:32,922 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-23 08:43:32,925 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 08:43:32,926 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 08:43:32,955 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 08:43:32,956 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 08:43:32,957 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 08:43:32,957 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 08:43:32,961 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 08:43:32,962 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 08:43:32,962 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 08:43:32,962 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 08:43:32,964 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 08:43:32,964 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 08:43:32,965 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 08:43:32,965 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 08:43:32,965 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 08:43:32,965 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 08:43:32,966 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 08:43:32,966 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 08:43:32,966 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 08:43:32,966 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 08:43:32,967 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 08:43:32,967 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 08:43:32,967 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 08:43:32,967 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 08:43:32,967 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 08:43:32,968 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 08:43:32,968 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 08:43:32,969 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 08:43:32,969 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 08:43:32,969 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 08:43:32,969 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 08:43:32,969 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 08:43:32,969 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 08:43:32,970 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 08:43:32,970 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 08:43:32,970 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 08:43:32,970 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 08:43:32,970 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 08:43:32,970 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 08:43:32,971 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 08:43:32,971 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 08:43:32,971 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 08:43:32,971 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 08:43:32,971 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 08:43:33,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 08:43:33,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 08:43:33,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 08:43:33,254 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 08:43:33,254 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 08:43:33,256 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-60.i [2023-12-23 08:43:34,490 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 08:43:34,706 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 08:43:34,706 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-60.i [2023-12-23 08:43:34,716 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08e9234dd/14e5a593b200493e9f3d679a003322b2/FLAGc2c6a8f66 [2023-12-23 08:43:34,728 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08e9234dd/14e5a593b200493e9f3d679a003322b2 [2023-12-23 08:43:34,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 08:43:34,731 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 08:43:34,732 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 08:43:34,733 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 08:43:34,737 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 08:43:34,738 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 08:43:34" (1/1) ... [2023-12-23 08:43:34,738 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d01e11d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:43:34, skipping insertion in model container [2023-12-23 08:43:34,739 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 08:43:34" (1/1) ... [2023-12-23 08:43:34,785 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 08:43:34,919 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_fillercodestructure_filler-pe-cn_file-60.i[919,932] [2023-12-23 08:43:34,986 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 08:43:35,001 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 08:43:35,013 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_fillercodestructure_filler-pe-cn_file-60.i[919,932] [2023-12-23 08:43:35,048 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 08:43:35,065 INFO L206 MainTranslator]: Completed translation [2023-12-23 08:43:35,066 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:43:35 WrapperNode [2023-12-23 08:43:35,066 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 08:43:35,067 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 08:43:35,067 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 08:43:35,067 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 08:43:35,073 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:43:35" (1/1) ... [2023-12-23 08:43:35,097 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:43:35" (1/1) ... [2023-12-23 08:43:35,131 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 275 [2023-12-23 08:43:35,132 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 08:43:35,132 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 08:43:35,132 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 08:43:35,132 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 08:43:35,147 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:43:35" (1/1) ... [2023-12-23 08:43:35,147 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:43:35" (1/1) ... [2023-12-23 08:43:35,152 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:43:35" (1/1) ... [2023-12-23 08:43:35,167 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]. [2023-12-23 08:43:35,167 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:43:35" (1/1) ... [2023-12-23 08:43:35,168 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:43:35" (1/1) ... [2023-12-23 08:43:35,184 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:43:35" (1/1) ... [2023-12-23 08:43:35,188 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:43:35" (1/1) ... [2023-12-23 08:43:35,191 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:43:35" (1/1) ... [2023-12-23 08:43:35,193 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:43:35" (1/1) ... [2023-12-23 08:43:35,197 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 08:43:35,198 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 08:43:35,198 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 08:43:35,198 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 08:43:35,199 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:43:35" (1/1) ... [2023-12-23 08:43:35,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 08:43:35,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 08:43:35,242 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) [2023-12-23 08:43:35,244 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 [2023-12-23 08:43:35,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 08:43:35,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 08:43:35,268 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 08:43:35,269 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 08:43:35,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 08:43:35,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 08:43:35,362 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 08:43:35,364 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 08:43:50,794 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 08:43:50,867 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 08:43:50,867 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 08:43:50,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:43:50 BoogieIcfgContainer [2023-12-23 08:43:50,868 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 08:43:50,870 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 08:43:50,870 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 08:43:50,873 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 08:43:50,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 08:43:34" (1/3) ... [2023-12-23 08:43:50,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8f560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 08:43:50, skipping insertion in model container [2023-12-23 08:43:50,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:43:35" (2/3) ... [2023-12-23 08:43:50,875 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8f560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 08:43:50, skipping insertion in model container [2023-12-23 08:43:50,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:43:50" (3/3) ... [2023-12-23 08:43:50,878 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-cn_file-60.i [2023-12-23 08:43:50,891 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 08:43:50,892 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 08:43:50,934 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 08:43:50,939 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;@519ac414, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 08:43:50,939 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 08:43:50,943 INFO L276 IsEmpty]: Start isEmpty. Operand has 118 states, 62 states have (on average 1.403225806451613) internal successors, (87), 63 states have internal predecessors, (87), 53 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2023-12-23 08:43:50,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2023-12-23 08:43:50,961 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 08:43:50,962 INFO L195 NwaCegarLoop]: trace histogram [53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 08:43:50,962 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 08:43:50,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 08:43:50,967 INFO L85 PathProgramCache]: Analyzing trace with hash 274552870, now seen corresponding path program 1 times [2023-12-23 08:43:50,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 08:43:50,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1909744516] [2023-12-23 08:43:50,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 08:43:50,980 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 [2023-12-23 08:43:50,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 08:43:50,983 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) [2023-12-23 08:43:50,992 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 [2023-12-23 08:43:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 08:43:52,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 08:43:52,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 08:43:52,440 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 2708 proven. 0 refuted. 0 times theorem prover too weak. 2804 trivial. 0 not checked. [2023-12-23 08:43:52,441 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 08:43:52,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 08:43:52,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1909744516] [2023-12-23 08:43:52,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1909744516] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 08:43:52,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 08:43:52,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 08:43:52,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440508197] [2023-12-23 08:43:52,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 08:43:52,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 08:43:52,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 08:43:52,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 08:43:52,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 08:43:52,488 INFO L87 Difference]: Start difference. First operand has 118 states, 62 states have (on average 1.403225806451613) internal successors, (87), 63 states have internal predecessors, (87), 53 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2023-12-23 08:43:57,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.71s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 08:43:57,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 08:43:57,733 INFO L93 Difference]: Finished difference Result 233 states and 437 transitions. [2023-12-23 08:43:57,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 08:43:57,988 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 314 [2023-12-23 08:43:57,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 08:43:57,995 INFO L225 Difference]: With dead ends: 233 [2023-12-23 08:43:57,995 INFO L226 Difference]: Without dead ends: 116 [2023-12-23 08:43:57,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 08:43:58,006 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-12-23 08:43:58,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 184 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2023-12-23 08:43:58,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-12-23 08:43:58,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2023-12-23 08:43:58,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 61 states have (on average 1.3278688524590163) internal successors, (81), 61 states have internal predecessors, (81), 53 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2023-12-23 08:43:58,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 187 transitions. [2023-12-23 08:43:58,074 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 187 transitions. Word has length 314 [2023-12-23 08:43:58,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 08:43:58,075 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 187 transitions. [2023-12-23 08:43:58,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2023-12-23 08:43:58,075 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 187 transitions. [2023-12-23 08:43:58,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2023-12-23 08:43:58,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 08:43:58,089 INFO L195 NwaCegarLoop]: trace histogram [53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 08:43:58,129 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 (2)] Forceful destruction successful, exit code 0 [2023-12-23 08:43:58,316 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 [2023-12-23 08:43:58,317 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 08:43:58,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 08:43:58,318 INFO L85 PathProgramCache]: Analyzing trace with hash 290869980, now seen corresponding path program 1 times [2023-12-23 08:43:58,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 08:43:58,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769827013] [2023-12-23 08:43:58,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 08:43:58,319 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 [2023-12-23 08:43:58,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 08:43:58,321 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) [2023-12-23 08:43:58,322 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 [2023-12-23 08:43:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 08:43:59,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 08:43:59,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 08:44:16,062 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2023-12-23 08:44:16,062 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 08:44:16,063 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 08:44:16,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769827013] [2023-12-23 08:44:16,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769827013] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 08:44:16,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 08:44:16,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 08:44:16,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445588471] [2023-12-23 08:44:16,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 08:44:16,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 08:44:16,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 08:44:16,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 08:44:16,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-23 08:44:16,068 INFO L87 Difference]: Start difference. First operand 116 states and 187 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2023-12-23 08:44:22,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.62s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 08:44:26,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 08:44:31,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.86s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 08:44:35,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 08:44:41,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.66s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 08:44:45,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 08:44:51,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.64s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 08:44:55,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 08:45:00,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.87s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 08:45:04,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 08:45:10,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.69s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 08:45:14,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 08:45:18,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 08:45:18,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 08:45:18,218 INFO L93 Difference]: Finished difference Result 349 states and 564 transitions. [2023-12-23 08:45:18,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 08:45:18,495 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) Word has length 314 [2023-12-23 08:45:18,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 08:45:18,499 INFO L225 Difference]: With dead ends: 349 [2023-12-23 08:45:18,499 INFO L226 Difference]: Without dead ends: 234 [2023-12-23 08:45:18,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-23 08:45:18,502 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 84 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 108 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.0s IncrementalHoareTripleChecker+Time [2023-12-23 08:45:18,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 481 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 76 Invalid, 13 Unknown, 0 Unchecked, 62.0s Time] [2023-12-23 08:45:18,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-12-23 08:45:18,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 209. [2023-12-23 08:45:18,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 100 states have (on average 1.22) internal successors, (122), 100 states have internal predecessors, (122), 106 states have call successors, (106), 2 states have call predecessors, (106), 2 states have return successors, (106), 106 states have call predecessors, (106), 106 states have call successors, (106) [2023-12-23 08:45:18,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 334 transitions. [2023-12-23 08:45:18,543 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 334 transitions. Word has length 314 [2023-12-23 08:45:18,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 08:45:18,545 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 334 transitions. [2023-12-23 08:45:18,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2023-12-23 08:45:18,545 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 334 transitions. [2023-12-23 08:45:18,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2023-12-23 08:45:18,548 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 08:45:18,548 INFO L195 NwaCegarLoop]: trace histogram [53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 08:45:18,586 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 (3)] Forceful destruction successful, exit code 0 [2023-12-23 08:45:18,764 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 [2023-12-23 08:45:18,765 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 08:45:18,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 08:45:18,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1842158781, now seen corresponding path program 1 times [2023-12-23 08:45:18,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 08:45:18,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769702808] [2023-12-23 08:45:18,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 08:45:18,767 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 [2023-12-23 08:45:18,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 08:45:18,768 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) [2023-12-23 08:45:18,769 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 [2023-12-23 08:45:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 08:45:20,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 08:45:20,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 08:45:30,638 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2023-12-23 08:45:30,639 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 08:45:30,639 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 08:45:30,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769702808] [2023-12-23 08:45:30,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769702808] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 08:45:30,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 08:45:30,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-23 08:45:30,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722855347] [2023-12-23 08:45:30,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 08:45:30,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 08:45:30,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 08:45:30,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 08:45:30,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-23 08:45:30,648 INFO L87 Difference]: Start difference. First operand 209 states and 334 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2023-12-23 08:45:37,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.63s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 08:45:42,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.88s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 08:45:47,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.93s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 08:45:51,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 08:45:55,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 08:46:00,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.66s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 08:46:05,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.91s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 08:46:10,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.96s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 08:46:14,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 08:46:18,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 08:46:22,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 08:46:22,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 08:46:22,771 INFO L93 Difference]: Finished difference Result 348 states and 559 transitions. [2023-12-23 08:46:23,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-23 08:46:23,058 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) Word has length 316 [2023-12-23 08:46:23,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 08:46:23,061 INFO L225 Difference]: With dead ends: 348 [2023-12-23 08:46:23,061 INFO L226 Difference]: Without dead ends: 232 [2023-12-23 08:46:23,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-23 08:46:23,063 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 118 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 107 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.7s IncrementalHoareTripleChecker+Time [2023-12-23 08:46:23,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 614 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 126 Invalid, 11 Unknown, 0 Unchecked, 51.7s Time] [2023-12-23 08:46:23,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-12-23 08:46:23,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 209. [2023-12-23 08:46:23,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 100 states have (on average 1.21) internal successors, (121), 100 states have internal predecessors, (121), 106 states have call successors, (106), 2 states have call predecessors, (106), 2 states have return successors, (106), 106 states have call predecessors, (106), 106 states have call successors, (106) [2023-12-23 08:46:23,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 333 transitions. [2023-12-23 08:46:23,104 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 333 transitions. Word has length 316 [2023-12-23 08:46:23,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 08:46:23,105 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 333 transitions. [2023-12-23 08:46:23,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2023-12-23 08:46:23,105 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 333 transitions. [2023-12-23 08:46:23,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2023-12-23 08:46:23,108 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 08:46:23,108 INFO L195 NwaCegarLoop]: trace histogram [53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 08:46:23,146 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 [2023-12-23 08:46:23,332 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 [2023-12-23 08:46:23,333 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 08:46:23,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 08:46:23,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1431740161, now seen corresponding path program 1 times [2023-12-23 08:46:23,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 08:46:23,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [11258314] [2023-12-23 08:46:23,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 08:46:23,334 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 [2023-12-23 08:46:23,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 08:46:23,336 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) [2023-12-23 08:46:23,338 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 [2023-12-23 08:46:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 08:46:24,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 08:46:24,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 08:46:24,775 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2023-12-23 08:46:24,776 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 08:46:24,776 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 08:46:24,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [11258314] [2023-12-23 08:46:24,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [11258314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 08:46:24,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 08:46:24,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 08:46:24,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173798799] [2023-12-23 08:46:24,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 08:46:24,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 08:46:24,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 08:46:24,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 08:46:24,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 08:46:24,778 INFO L87 Difference]: Start difference. First operand 209 states and 333 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2023-12-23 08:46:29,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.69s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 08:46:33,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 08:46:37,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 08:46:38,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 08:46:38,162 INFO L93 Difference]: Finished difference Result 345 states and 553 transitions. [2023-12-23 08:46:38,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 08:46:38,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) Word has length 316 [2023-12-23 08:46:38,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 08:46:38,165 INFO L225 Difference]: With dead ends: 345 [2023-12-23 08:46:38,165 INFO L226 Difference]: Without dead ends: 230 [2023-12-23 08:46:38,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 08:46:38,167 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 31 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2023-12-23 08:46:38,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 377 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 3 Unknown, 0 Unchecked, 13.4s Time] [2023-12-23 08:46:38,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-12-23 08:46:38,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 214. [2023-12-23 08:46:38,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 105 states have (on average 1.2190476190476192) internal successors, (128), 105 states have internal predecessors, (128), 106 states have call successors, (106), 2 states have call predecessors, (106), 2 states have return successors, (106), 106 states have call predecessors, (106), 106 states have call successors, (106) [2023-12-23 08:46:38,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 340 transitions. [2023-12-23 08:46:38,194 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 340 transitions. Word has length 316 [2023-12-23 08:46:38,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 08:46:38,195 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 340 transitions. [2023-12-23 08:46:38,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2023-12-23 08:46:38,195 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 340 transitions. [2023-12-23 08:46:38,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2023-12-23 08:46:38,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 08:46:38,197 INFO L195 NwaCegarLoop]: trace histogram [53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 08:46:38,241 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 (5)] Ended with exit code 0 [2023-12-23 08:46:38,412 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 [2023-12-23 08:46:38,413 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 08:46:38,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 08:46:38,413 INFO L85 PathProgramCache]: Analyzing trace with hash 420622911, now seen corresponding path program 1 times [2023-12-23 08:46:38,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 08:46:38,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [826015447] [2023-12-23 08:46:38,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 08:46:38,414 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 [2023-12-23 08:46:38,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 08:46:38,415 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) [2023-12-23 08:46:38,416 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 [2023-12-23 08:46:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 08:46:39,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 08:46:39,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 08:46:44,897 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2023-12-23 08:46:44,897 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 08:46:44,897 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 08:46:44,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [826015447] [2023-12-23 08:46:44,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [826015447] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 08:46:44,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 08:46:44,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 08:46:44,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392941978] [2023-12-23 08:46:44,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 08:46:44,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 08:46:44,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 08:46:44,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 08:46:44,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 08:46:44,900 INFO L87 Difference]: Start difference. First operand 214 states and 340 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2023-12-23 08:46:50,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.69s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 08:46:54,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 08:46:58,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 08:46:58,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 08:46:58,409 INFO L93 Difference]: Finished difference Result 454 states and 726 transitions. [2023-12-23 08:46:58,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 08:46:58,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) Word has length 316 [2023-12-23 08:46:58,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 08:46:58,414 INFO L225 Difference]: With dead ends: 454 [2023-12-23 08:46:58,414 INFO L226 Difference]: Without dead ends: 334 [2023-12-23 08:46:58,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 08:46:58,416 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 32 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2023-12-23 08:46:58,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 363 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 3 Unknown, 0 Unchecked, 13.5s Time] [2023-12-23 08:46:58,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2023-12-23 08:46:58,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 331. [2023-12-23 08:46:58,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 168 states have (on average 1.255952380952381) internal successors, (211), 168 states have internal predecessors, (211), 159 states have call successors, (159), 3 states have call predecessors, (159), 3 states have return successors, (159), 159 states have call predecessors, (159), 159 states have call successors, (159) [2023-12-23 08:46:58,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 529 transitions. [2023-12-23 08:46:58,447 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 529 transitions. Word has length 316 [2023-12-23 08:46:58,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 08:46:58,448 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 529 transitions. [2023-12-23 08:46:58,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2023-12-23 08:46:58,448 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 529 transitions. [2023-12-23 08:46:58,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2023-12-23 08:46:58,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 08:46:58,450 INFO L195 NwaCegarLoop]: trace histogram [53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 08:46:58,482 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 (6)] Forceful destruction successful, exit code 0 [2023-12-23 08:46:58,660 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 [2023-12-23 08:46:58,661 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 08:46:58,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 08:46:58,661 INFO L85 PathProgramCache]: Analyzing trace with hash -388723715, now seen corresponding path program 1 times [2023-12-23 08:46:58,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 08:46:58,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068732293] [2023-12-23 08:46:58,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 08:46:58,662 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 [2023-12-23 08:46:58,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 08:46:58,663 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) [2023-12-23 08:46:58,671 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 [2023-12-23 08:46:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 08:47:00,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 08:47:00,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 08:47:02,086 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 2502 proven. 51 refuted. 0 times theorem prover too weak. 2959 trivial. 0 not checked. [2023-12-23 08:47:02,086 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 08:47:03,494 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 105 proven. 51 refuted. 0 times theorem prover too weak. 5356 trivial. 0 not checked. [2023-12-23 08:47:03,494 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 08:47:03,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068732293] [2023-12-23 08:47:03,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068732293] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 08:47:03,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 08:47:03,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-23 08:47:03,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587622424] [2023-12-23 08:47:03,495 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 08:47:03,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 08:47:03,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 08:47:03,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 08:47:03,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 08:47:03,497 INFO L87 Difference]: Start difference. First operand 331 states and 529 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 2 states have call successors, (70), 2 states have call predecessors, (70), 4 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2023-12-23 08:47:11,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.74s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 08:47:15,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 08:47:19,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 08:47:19,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 08:47:19,208 INFO L93 Difference]: Finished difference Result 590 states and 928 transitions. [2023-12-23 08:47:19,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 08:47:19,581 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 2 states have call successors, (70), 2 states have call predecessors, (70), 4 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) Word has length 316 [2023-12-23 08:47:19,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 08:47:19,584 INFO L225 Difference]: With dead ends: 590 [2023-12-23 08:47:19,584 INFO L226 Difference]: Without dead ends: 353 [2023-12-23 08:47:19,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 624 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-23 08:47:19,586 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 189 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 126 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2023-12-23 08:47:19,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 264 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 268 Invalid, 3 Unknown, 0 Unchecked, 15.4s Time] [2023-12-23 08:47:19,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2023-12-23 08:47:19,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 341. [2023-12-23 08:47:19,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 175 states have (on average 1.2228571428571429) internal successors, (214), 175 states have internal predecessors, (214), 159 states have call successors, (159), 6 states have call predecessors, (159), 6 states have return successors, (159), 159 states have call predecessors, (159), 159 states have call successors, (159) [2023-12-23 08:47:19,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 532 transitions. [2023-12-23 08:47:19,625 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 532 transitions. Word has length 316 [2023-12-23 08:47:19,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 08:47:19,626 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 532 transitions. [2023-12-23 08:47:19,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 2 states have call successors, (70), 2 states have call predecessors, (70), 4 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2023-12-23 08:47:19,627 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 532 transitions. [2023-12-23 08:47:19,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2023-12-23 08:47:19,630 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 08:47:19,630 INFO L195 NwaCegarLoop]: trace histogram [53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 08:47:19,678 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 [2023-12-23 08:47:19,843 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 [2023-12-23 08:47:19,843 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 08:47:19,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 08:47:19,844 INFO L85 PathProgramCache]: Analyzing trace with hash -144914171, now seen corresponding path program 1 times [2023-12-23 08:47:19,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 08:47:19,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540645593] [2023-12-23 08:47:19,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 08:47:19,845 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 [2023-12-23 08:47:19,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 08:47:19,846 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) [2023-12-23 08:47:19,847 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 [2023-12-23 08:47:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 08:47:21,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-23 08:47:21,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-23 08:57:59,255 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-23 08:57:59,285 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 (8)] Forceful destruction successful, exit code 0 [2023-12-23 08:57:59,287 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 [2023-12-23 08:57:59,287 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 [2023-12-23 08:57:59,458 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 [2023-12-23 08:57:59,459 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 317 with TraceHistMax 53,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-43-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 context. [2023-12-23 08:57:59,463 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-12-23 08:57:59,465 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-23 08:57:59,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 08:57:59 BoogieIcfgContainer [2023-12-23 08:57:59,466 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-23 08:57:59,467 INFO L158 Benchmark]: Toolchain (without parser) took 864735.42ms. Allocated memory was 261.1MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 207.5MB in the beginning and 1.7GB in the end (delta: -1.5GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2023-12-23 08:57:59,467 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 175.1MB. Free memory was 121.1MB in the beginning and 121.0MB in the end (delta: 151.0kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-23 08:57:59,467 INFO L158 Benchmark]: CACSL2BoogieTranslator took 333.96ms. Allocated memory is still 261.1MB. Free memory was 207.5MB in the beginning and 190.1MB in the end (delta: 17.4MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-23 08:57:59,468 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.49ms. Allocated memory is still 261.1MB. Free memory was 190.1MB in the beginning and 187.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-23 08:57:59,468 INFO L158 Benchmark]: Boogie Preprocessor took 64.87ms. Allocated memory is still 261.1MB. Free memory was 187.0MB in the beginning and 183.4MB in the end (delta: 3.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-23 08:57:59,468 INFO L158 Benchmark]: RCFGBuilder took 15670.11ms. Allocated memory is still 261.1MB. Free memory was 183.3MB in the beginning and 220.3MB in the end (delta: -37.0MB). Peak memory consumption was 30.1MB. Max. memory is 8.0GB. [2023-12-23 08:57:59,469 INFO L158 Benchmark]: TraceAbstraction took 848596.22ms. Allocated memory was 261.1MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 219.8MB in the beginning and 1.7GB in the end (delta: -1.4GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-12-23 08:57:59,470 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 175.1MB. Free memory was 121.1MB in the beginning and 121.0MB in the end (delta: 151.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 333.96ms. Allocated memory is still 261.1MB. Free memory was 207.5MB in the beginning and 190.1MB in the end (delta: 17.4MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 64.49ms. Allocated memory is still 261.1MB. Free memory was 190.1MB in the beginning and 187.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 64.87ms. Allocated memory is still 261.1MB. Free memory was 187.0MB in the beginning and 183.4MB in the end (delta: 3.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 15670.11ms. Allocated memory is still 261.1MB. Free memory was 183.3MB in the beginning and 220.3MB in the end (delta: -37.0MB). Peak memory consumption was 30.1MB. Max. memory is 8.0GB. * TraceAbstraction took 848596.22ms. Allocated memory was 261.1MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 219.8MB in the beginning and 1.7GB in the end (delta: -1.4GB). Peak memory consumption was 1.4GB. 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 analyzing trace of length 317 with TraceHistMax 53,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-43-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 118 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 848.5s, OverallIterations: 7, TraceHistogramMax: 53, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 163.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 34 mSolverCounterUnknown, 488 SdHoareTripleChecker+Valid, 161.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 454 mSDsluCounter, 2283 SdHoareTripleChecker+Invalid, 157.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1241 mSDsCounter, 344 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 493 IncrementalHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 344 mSolverCounterUnsat, 1042 mSDtfsCounter, 493 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2209 GetRequests, 2188 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=341occurred in iteration=6, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 79 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 7.2s SatisfiabilityAnalysisTime, 36.2s InterpolantComputationTime, 1892 NumberOfCodeBlocks, 1892 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 2201 ConstructedInterpolants, 0 QuantifiedInterpolants, 8978 SizeOfPredicates, 14 NumberOfNonLiveVariables, 2992 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 38482/38584 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