/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-pr-co_file-99.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 12:34:54,858 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 12:34:54,933 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 12:34:54,936 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 12:34:54,936 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 12:34:54,948 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 12:34:54,948 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 12:34:54,948 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 12:34:54,949 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 12:34:54,949 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 12:34:54,949 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 12:34:54,949 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 12:34:54,950 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 12:34:54,950 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 12:34:54,950 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 12:34:54,951 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 12:34:54,951 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 12:34:54,951 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 12:34:54,951 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 12:34:54,952 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 12:34:54,952 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 12:34:54,955 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 12:34:54,955 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 12:34:54,955 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 12:34:54,958 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 12:34:54,958 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 12:34:54,958 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 12:34:54,959 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 12:34:54,959 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 12:34:54,959 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 12:34:54,960 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 12:34:54,960 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 12:34:54,960 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 12:34:54,960 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 12:34:54,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 12:34:54,960 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 12:34:54,960 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 12:34:54,960 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 12:34:54,961 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 12:34:54,961 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 12:34:54,961 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 12:34:54,961 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 12:34:54,961 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 12:34:54,961 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 12:34:54,962 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 12:34:54,962 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 12:34:54,962 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 12:34:55,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 12:34:55,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 12:34:55,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 12:34:55,153 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 12:34:55,153 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 12:34:55,154 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-99.i [2023-12-16 12:34:56,255 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 12:34:56,465 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 12:34:56,465 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-99.i [2023-12-16 12:34:56,476 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55c1a96c2/2a925ef05a13435ebd7611098c1d1d9a/FLAG88695509d [2023-12-16 12:34:56,487 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55c1a96c2/2a925ef05a13435ebd7611098c1d1d9a [2023-12-16 12:34:56,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 12:34:56,489 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 12:34:56,492 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 12:34:56,492 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 12:34:56,495 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 12:34:56,495 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:34:56" (1/1) ... [2023-12-16 12:34:56,496 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cdc943c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:34:56, skipping insertion in model container [2023-12-16 12:34:56,496 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:34:56" (1/1) ... [2023-12-16 12:34:56,523 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 12:34:56,646 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-pr-co_file-99.i[919,932] [2023-12-16 12:34:56,696 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 12:34:56,717 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 12:34:56,726 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-pr-co_file-99.i[919,932] [2023-12-16 12:34:56,754 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 12:34:56,782 INFO L206 MainTranslator]: Completed translation [2023-12-16 12:34:56,783 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:34:56 WrapperNode [2023-12-16 12:34:56,783 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 12:34:56,784 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 12:34:56,784 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 12:34:56,784 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 12:34:56,790 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:34:56" (1/1) ... [2023-12-16 12:34:56,799 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:34:56" (1/1) ... [2023-12-16 12:34:56,820 INFO L138 Inliner]: procedures = 27, calls = 52, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 228 [2023-12-16 12:34:56,820 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 12:34:56,821 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 12:34:56,821 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 12:34:56,821 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 12:34:56,833 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:34:56" (1/1) ... [2023-12-16 12:34:56,833 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:34:56" (1/1) ... [2023-12-16 12:34:56,836 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:34:56" (1/1) ... [2023-12-16 12:34:56,858 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 12:34:56,858 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:34:56" (1/1) ... [2023-12-16 12:34:56,858 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:34:56" (1/1) ... [2023-12-16 12:34:56,867 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:34:56" (1/1) ... [2023-12-16 12:34:56,869 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:34:56" (1/1) ... [2023-12-16 12:34:56,871 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:34:56" (1/1) ... [2023-12-16 12:34:56,902 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:34:56" (1/1) ... [2023-12-16 12:34:56,906 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 12:34:56,906 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 12:34:56,906 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 12:34:56,906 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 12:34:56,907 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:34:56" (1/1) ... [2023-12-16 12:34:56,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 12:34:56,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 12:34:56,935 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 12:34:56,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 12:34:56,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 12:34:56,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 12:34:56,985 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 12:34:56,985 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 12:34:56,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 12:34:56,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 12:34:57,084 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 12:34:57,087 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 12:34:58,466 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 12:34:58,509 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 12:34:58,509 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 12:34:58,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:34:58 BoogieIcfgContainer [2023-12-16 12:34:58,510 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 12:34:58,511 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 12:34:58,511 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 12:34:58,514 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 12:34:58,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:34:56" (1/3) ... [2023-12-16 12:34:58,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee7ed82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:34:58, skipping insertion in model container [2023-12-16 12:34:58,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:34:56" (2/3) ... [2023-12-16 12:34:58,515 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee7ed82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:34:58, skipping insertion in model container [2023-12-16 12:34:58,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:34:58" (3/3) ... [2023-12-16 12:34:58,516 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-99.i [2023-12-16 12:34:58,529 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 12:34:58,529 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 12:34:58,568 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 12:34:58,573 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;@1a9490a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 12:34:58,573 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 12:34:58,576 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 55 states have (on average 1.4) internal successors, (77), 56 states have internal predecessors, (77), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-16 12:34:58,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-12-16 12:34:58,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:34:58,591 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 12:34:58,591 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:34:58,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:34:58,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1396740110, now seen corresponding path program 1 times [2023-12-16 12:34:58,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:34:58,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [645781629] [2023-12-16 12:34:58,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:34:58,607 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:34:58,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:34:58,616 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 12:34:58,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 12:34:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:34:59,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 12:34:59,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:34:59,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 1264 proven. 0 refuted. 0 times theorem prover too weak. 1700 trivial. 0 not checked. [2023-12-16 12:34:59,101 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 12:34:59,102 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:34:59,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [645781629] [2023-12-16 12:34:59,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [645781629] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 12:34:59,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 12:34:59,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 12:34:59,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165979293] [2023-12-16 12:34:59,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 12:34:59,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 12:34:59,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:34:59,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 12:34:59,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 12:34:59,130 INFO L87 Difference]: Start difference. First operand has 97 states, 55 states have (on average 1.4) internal successors, (77), 56 states have internal predecessors, (77), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2023-12-16 12:35:00,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 12:35:00,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:35:00,662 INFO L93 Difference]: Finished difference Result 191 states and 347 transitions. [2023-12-16 12:35:00,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 12:35:00,689 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 241 [2023-12-16 12:35:00,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:35:00,696 INFO L225 Difference]: With dead ends: 191 [2023-12-16 12:35:00,696 INFO L226 Difference]: Without dead ends: 95 [2023-12-16 12:35:00,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 12:35:00,702 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-16 12:35:00,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 146 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-16 12:35:00,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-16 12:35:00,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-12-16 12:35:00,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 54 states have (on average 1.3148148148148149) internal successors, (71), 54 states have internal predecessors, (71), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-16 12:35:00,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 149 transitions. [2023-12-16 12:35:00,760 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 149 transitions. Word has length 241 [2023-12-16 12:35:00,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:35:00,761 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 149 transitions. [2023-12-16 12:35:00,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2023-12-16 12:35:00,762 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 149 transitions. [2023-12-16 12:35:00,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-12-16 12:35:00,765 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:35:00,765 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 12:35:00,778 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 [2023-12-16 12:35:00,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:35:00,976 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:35:00,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:35:00,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1027750318, now seen corresponding path program 1 times [2023-12-16 12:35:00,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:35:00,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589249230] [2023-12-16 12:35:00,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:35:00,977 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:35:00,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:35:00,978 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 12:35:00,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 12:35:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:35:01,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 12:35:01,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:35:02,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-12-16 12:35:02,403 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 12:35:02,404 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:35:02,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589249230] [2023-12-16 12:35:02,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589249230] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 12:35:02,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 12:35:02,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 12:35:02,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625263800] [2023-12-16 12:35:02,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 12:35:02,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 12:35:02,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:35:02,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 12:35:02,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 12:35:02,406 INFO L87 Difference]: Start difference. First operand 95 states and 149 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-16 12:35:03,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:35:03,613 INFO L93 Difference]: Finished difference Result 275 states and 435 transitions. [2023-12-16 12:35:03,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 12:35:03,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 241 [2023-12-16 12:35:03,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:35:03,616 INFO L225 Difference]: With dead ends: 275 [2023-12-16 12:35:03,616 INFO L226 Difference]: Without dead ends: 181 [2023-12-16 12:35:03,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 12:35:03,618 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 28 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 12:35:03,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 283 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 12:35:03,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-12-16 12:35:03,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 172. [2023-12-16 12:35:03,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 91 states have (on average 1.2527472527472527) internal successors, (114), 91 states have internal predecessors, (114), 78 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-16 12:35:03,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 270 transitions. [2023-12-16 12:35:03,663 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 270 transitions. Word has length 241 [2023-12-16 12:35:03,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:35:03,666 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 270 transitions. [2023-12-16 12:35:03,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-16 12:35:03,667 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 270 transitions. [2023-12-16 12:35:03,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-12-16 12:35:03,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:35:03,671 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 12:35:03,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-16 12:35:03,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:35:03,872 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:35:03,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:35:03,873 INFO L85 PathProgramCache]: Analyzing trace with hash -808895600, now seen corresponding path program 1 times [2023-12-16 12:35:03,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:35:03,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310242479] [2023-12-16 12:35:03,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:35:03,874 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:35:03,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:35:03,875 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 12:35:03,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 12:35:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:35:04,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 12:35:04,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:35:05,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 799 proven. 288 refuted. 0 times theorem prover too weak. 1877 trivial. 0 not checked. [2023-12-16 12:35:05,632 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 12:35:06,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 36 proven. 297 refuted. 0 times theorem prover too weak. 2631 trivial. 0 not checked. [2023-12-16 12:35:06,762 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:35:06,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310242479] [2023-12-16 12:35:06,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310242479] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 12:35:06,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 12:35:06,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2023-12-16 12:35:06,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637749482] [2023-12-16 12:35:06,763 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 12:35:06,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-16 12:35:06,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:35:06,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-16 12:35:06,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2023-12-16 12:35:06,765 INFO L87 Difference]: Start difference. First operand 172 states and 270 transitions. Second operand has 18 states, 18 states have (on average 4.222222222222222) internal successors, (76), 18 states have internal predecessors, (76), 4 states have call successors, (74), 4 states have call predecessors, (74), 10 states have return successors, (75), 4 states have call predecessors, (75), 4 states have call successors, (75) [2023-12-16 12:35:09,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 12:35:10,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:35:10,762 INFO L93 Difference]: Finished difference Result 313 states and 462 transitions. [2023-12-16 12:35:10,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-16 12:35:10,763 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.222222222222222) internal successors, (76), 18 states have internal predecessors, (76), 4 states have call successors, (74), 4 states have call predecessors, (74), 10 states have return successors, (75), 4 states have call predecessors, (75), 4 states have call successors, (75) Word has length 241 [2023-12-16 12:35:10,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:35:10,766 INFO L225 Difference]: With dead ends: 313 [2023-12-16 12:35:10,766 INFO L226 Difference]: Without dead ends: 211 [2023-12-16 12:35:10,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 467 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=652, Invalid=1604, Unknown=0, NotChecked=0, Total=2256 [2023-12-16 12:35:10,770 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 372 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-16 12:35:10,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 507 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-16 12:35:10,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-12-16 12:35:10,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 195. [2023-12-16 12:35:10,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 108 states have (on average 1.1388888888888888) internal successors, (123), 108 states have internal predecessors, (123), 78 states have call successors, (78), 8 states have call predecessors, (78), 8 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-16 12:35:10,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 279 transitions. [2023-12-16 12:35:10,794 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 279 transitions. Word has length 241 [2023-12-16 12:35:10,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:35:10,794 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 279 transitions. [2023-12-16 12:35:10,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.222222222222222) internal successors, (76), 18 states have internal predecessors, (76), 4 states have call successors, (74), 4 states have call predecessors, (74), 10 states have return successors, (75), 4 states have call predecessors, (75), 4 states have call successors, (75) [2023-12-16 12:35:10,795 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 279 transitions. [2023-12-16 12:35:10,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-12-16 12:35:10,797 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:35:10,797 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 12:35:10,815 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 (4)] Ended with exit code 0 [2023-12-16 12:35:11,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:35:11,006 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:35:11,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:35:11,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1820012850, now seen corresponding path program 1 times [2023-12-16 12:35:11,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:35:11,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633134572] [2023-12-16 12:35:11,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:35:11,008 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:35:11,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:35:11,009 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 12:35:11,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 12:35:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:35:11,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 12:35:11,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:35:12,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 27 proven. 1160 refuted. 0 times theorem prover too weak. 1777 trivial. 0 not checked. [2023-12-16 12:35:12,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 12:35:12,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 27 proven. 87 refuted. 0 times theorem prover too weak. 2850 trivial. 0 not checked. [2023-12-16 12:35:12,749 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:35:12,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633134572] [2023-12-16 12:35:12,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [633134572] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 12:35:12,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 12:35:12,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-16 12:35:12,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774279998] [2023-12-16 12:35:12,750 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 12:35:12,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 12:35:12,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:35:12,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 12:35:12,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-12-16 12:35:12,751 INFO L87 Difference]: Start difference. First operand 195 states and 279 transitions. Second operand has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 4 states have call successors, (78), 3 states have call predecessors, (78), 5 states have return successors, (78), 4 states have call predecessors, (78), 4 states have call successors, (78) [2023-12-16 12:35:16,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 12:35:16,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:35:16,437 INFO L93 Difference]: Finished difference Result 375 states and 512 transitions. [2023-12-16 12:35:16,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 12:35:16,465 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 4 states have call successors, (78), 3 states have call predecessors, (78), 5 states have return successors, (78), 4 states have call predecessors, (78), 4 states have call successors, (78) Word has length 241 [2023-12-16 12:35:16,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:35:16,467 INFO L225 Difference]: With dead ends: 375 [2023-12-16 12:35:16,467 INFO L226 Difference]: Without dead ends: 270 [2023-12-16 12:35:16,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=242, Unknown=0, NotChecked=0, Total=380 [2023-12-16 12:35:16,468 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 199 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-16 12:35:16,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 336 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-16 12:35:16,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-12-16 12:35:16,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 243. [2023-12-16 12:35:16,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 141 states have (on average 1.1347517730496455) internal successors, (160), 142 states have internal predecessors, (160), 87 states have call successors, (87), 14 states have call predecessors, (87), 14 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-16 12:35:16,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 334 transitions. [2023-12-16 12:35:16,495 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 334 transitions. Word has length 241 [2023-12-16 12:35:16,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:35:16,497 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 334 transitions. [2023-12-16 12:35:16,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 4 states have call successors, (78), 3 states have call predecessors, (78), 5 states have return successors, (78), 4 states have call predecessors, (78), 4 states have call successors, (78) [2023-12-16 12:35:16,497 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 334 transitions. [2023-12-16 12:35:16,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-12-16 12:35:16,499 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:35:16,499 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 12:35:16,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 12:35:16,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:35:16,712 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:35:16,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:35:16,712 INFO L85 PathProgramCache]: Analyzing trace with hash -800410194, now seen corresponding path program 1 times [2023-12-16 12:35:16,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:35:16,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1362447880] [2023-12-16 12:35:16,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:35:16,713 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:35:16,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:35:16,714 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 12:35:16,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 12:35:17,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:35:17,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 12:35:17,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:35:17,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-12-16 12:35:17,447 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 12:35:17,447 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:35:17,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1362447880] [2023-12-16 12:35:17,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1362447880] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 12:35:17,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 12:35:17,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 12:35:17,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720145322] [2023-12-16 12:35:17,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 12:35:17,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 12:35:17,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:35:17,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 12:35:17,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 12:35:17,449 INFO L87 Difference]: Start difference. First operand 243 states and 334 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-16 12:35:19,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 12:35:19,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:35:19,586 INFO L93 Difference]: Finished difference Result 392 states and 537 transitions. [2023-12-16 12:35:19,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 12:35:19,587 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 242 [2023-12-16 12:35:19,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:35:19,590 INFO L225 Difference]: With dead ends: 392 [2023-12-16 12:35:19,590 INFO L226 Difference]: Without dead ends: 243 [2023-12-16 12:35:19,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 12:35:19,591 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 30 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-16 12:35:19,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 252 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-16 12:35:19,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-12-16 12:35:19,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2023-12-16 12:35:19,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 141 states have (on average 1.127659574468085) internal successors, (159), 142 states have internal predecessors, (159), 87 states have call successors, (87), 14 states have call predecessors, (87), 14 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-16 12:35:19,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 333 transitions. [2023-12-16 12:35:19,631 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 333 transitions. Word has length 242 [2023-12-16 12:35:19,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:35:19,636 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 333 transitions. [2023-12-16 12:35:19,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-16 12:35:19,636 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 333 transitions. [2023-12-16 12:35:19,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-12-16 12:35:19,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:35:19,638 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 12:35:19,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-16 12:35:19,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:35:19,864 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:35:19,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:35:19,864 INFO L85 PathProgramCache]: Analyzing trace with hash 974597168, now seen corresponding path program 1 times [2023-12-16 12:35:19,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:35:19,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [715421538] [2023-12-16 12:35:19,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:35:19,865 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:35:19,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:35:19,866 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 12:35:19,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 12:35:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:35:20,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-16 12:35:20,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 12:36:01,228 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 (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 12:36:01,242 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 12:36:02,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 12:36:02,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown