/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-19.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 12:49:19,192 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 12:49:19,278 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 12:49:19,285 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 12:49:19,285 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 12:49:19,322 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 12:49:19,322 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 12:49:19,323 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 12:49:19,323 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 12:49:19,327 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 12:49:19,327 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 12:49:19,327 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 12:49:19,328 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 12:49:19,330 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 12:49:19,330 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 12:49:19,331 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 12:49:19,331 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 12:49:19,331 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 12:49:19,331 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 12:49:19,332 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 12:49:19,332 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 12:49:19,332 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 12:49:19,332 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 12:49:19,333 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 12:49:19,333 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 12:49:19,333 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 12:49:19,333 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 12:49:19,333 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 12:49:19,334 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 12:49:19,334 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 12:49:19,335 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 12:49:19,335 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 12:49:19,335 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 12:49:19,335 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 12:49:19,335 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 12:49:19,336 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 12:49:19,336 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 12:49:19,336 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 12:49:19,336 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 12:49:19,336 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 12:49:19,336 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 12:49:19,337 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 12:49:19,337 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 12:49:19,337 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 12:49:19,338 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 12:49:19,338 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 12:49:19,338 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 12:49:19,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 12:49:19,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 12:49:19,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 12:49:19,567 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 12:49:19,567 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 12:49:19,568 INFO L431 ainManager$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-19.i [2023-12-23 12:49:20,815 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 12:49:21,041 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 12:49:21,041 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-19.i [2023-12-23 12:49:21,052 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/944702f01/9f05484732a74eaa811f34a5769c36f4/FLAGb41efca8b [2023-12-23 12:49:21,065 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/944702f01/9f05484732a74eaa811f34a5769c36f4 [2023-12-23 12:49:21,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 12:49:21,069 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 12:49:21,070 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 12:49:21,070 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 12:49:21,074 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 12:49:21,075 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 12:49:21" (1/1) ... [2023-12-23 12:49:21,076 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39a6fbdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:49:21, skipping insertion in model container [2023-12-23 12:49:21,076 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 12:49:21" (1/1) ... [2023-12-23 12:49:21,122 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 12:49:21,238 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-19.i[919,932] [2023-12-23 12:49:21,315 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 12:49:21,331 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 12:49:21,346 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-19.i[919,932] [2023-12-23 12:49:21,391 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 12:49:21,409 INFO L206 MainTranslator]: Completed translation [2023-12-23 12:49:21,410 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:49:21 WrapperNode [2023-12-23 12:49:21,410 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 12:49:21,411 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 12:49:21,411 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 12:49:21,411 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 12:49:21,417 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:49:21" (1/1) ... [2023-12-23 12:49:21,435 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:49:21" (1/1) ... [2023-12-23 12:49:21,486 INFO L138 Inliner]: procedures = 27, calls = 55, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 233 [2023-12-23 12:49:21,486 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 12:49:21,487 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 12:49:21,487 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 12:49:21,487 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 12:49:21,518 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:49:21" (1/1) ... [2023-12-23 12:49:21,519 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:49:21" (1/1) ... [2023-12-23 12:49:21,528 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:49:21" (1/1) ... [2023-12-23 12:49:21,556 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 12:49:21,556 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:49:21" (1/1) ... [2023-12-23 12:49:21,556 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:49:21" (1/1) ... [2023-12-23 12:49:21,570 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:49:21" (1/1) ... [2023-12-23 12:49:21,573 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:49:21" (1/1) ... [2023-12-23 12:49:21,593 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:49:21" (1/1) ... [2023-12-23 12:49:21,597 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:49:21" (1/1) ... [2023-12-23 12:49:21,602 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 12:49:21,603 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 12:49:21,603 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 12:49:21,603 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 12:49:21,604 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:49:21" (1/1) ... [2023-12-23 12:49:21,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 12:49:21,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 12:49:21,646 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 12:49:21,674 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 12:49:21,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 12:49:21,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 12:49:21,681 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 12:49:21,683 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 12:49:21,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 12:49:21,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 12:49:21,794 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 12:49:21,796 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 12:49:38,714 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 12:49:38,758 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 12:49:38,758 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 12:49:38,758 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 12:49:38 BoogieIcfgContainer [2023-12-23 12:49:38,759 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 12:49:38,761 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 12:49:38,761 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 12:49:38,764 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 12:49:38,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 12:49:21" (1/3) ... [2023-12-23 12:49:38,765 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ff733c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 12:49:38, skipping insertion in model container [2023-12-23 12:49:38,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:49:21" (2/3) ... [2023-12-23 12:49:38,766 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ff733c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 12:49:38, skipping insertion in model container [2023-12-23 12:49:38,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 12:49:38" (3/3) ... [2023-12-23 12:49:38,768 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-19.i [2023-12-23 12:49:38,786 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 12:49:38,786 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 12:49:38,851 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 12:49:38,859 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;@118e539f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 12:49:38,859 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 12:49:38,864 INFO L276 IsEmpty]: Start isEmpty. Operand has 101 states, 56 states have (on average 1.375) internal successors, (77), 57 states have internal predecessors, (77), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-23 12:49:38,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-12-23 12:49:38,885 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 12:49:38,886 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:49:38,886 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 12:49:38,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 12:49:38,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1687030641, now seen corresponding path program 1 times [2023-12-23 12:49:38,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 12:49:38,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785844287] [2023-12-23 12:49:38,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 12:49:38,905 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 12:49:38,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 12:49:38,916 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 12:49:38,921 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 12:49:40,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 12:49:40,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 12:49:40,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 12:49:46,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2023-12-23 12:49:46,865 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 12:49:46,866 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 12:49:46,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [785844287] [2023-12-23 12:49:46,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [785844287] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 12:49:46,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 12:49:46,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 12:49:46,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563432814] [2023-12-23 12:49:46,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 12:49:46,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 12:49:46,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 12:49:46,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 12:49:46,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-23 12:49:46,974 INFO L87 Difference]: Start difference. First operand has 101 states, 56 states have (on average 1.375) internal successors, (77), 57 states have internal predecessors, (77), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-12-23 12:49:52,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.29s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:49:56,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:50:00,817 WARN L539 Checker$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 12:50:06,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:50:10,533 WARN L539 Checker$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 12:50:14,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:50:18,561 WARN L539 Checker$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 12:50:22,576 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 12:50:22,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 12:50:22,578 INFO L93 Difference]: Finished difference Result 334 states and 624 transitions. [2023-12-23 12:50:23,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-23 12:50:23,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 256 [2023-12-23 12:50:23,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 12:50:23,062 INFO L225 Difference]: With dead ends: 334 [2023-12-23 12:50:23,062 INFO L226 Difference]: Without dead ends: 234 [2023-12-23 12:50:23,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-23 12:50:23,070 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 128 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 89 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.4s IncrementalHoareTripleChecker+Time [2023-12-23 12:50:23,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 501 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 9 Invalid, 8 Unknown, 0 Unchecked, 35.4s Time] [2023-12-23 12:50:23,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-12-23 12:50:23,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 195. [2023-12-23 12:50:23,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 108 states have (on average 1.2962962962962963) internal successors, (140), 108 states have internal predecessors, (140), 84 states have call successors, (84), 2 states have call predecessors, (84), 2 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-23 12:50:23,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 308 transitions. [2023-12-23 12:50:23,160 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 308 transitions. Word has length 256 [2023-12-23 12:50:23,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 12:50:23,162 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 308 transitions. [2023-12-23 12:50:23,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-12-23 12:50:23,162 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 308 transitions. [2023-12-23 12:50:23,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-12-23 12:50:23,168 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 12:50:23,169 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:50:23,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-23 12:50:23,384 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 12:50:23,385 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 12:50:23,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 12:50:23,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1790288205, now seen corresponding path program 1 times [2023-12-23 12:50:23,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 12:50:23,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1282423518] [2023-12-23 12:50:23,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 12:50:23,387 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 12:50:23,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 12:50:23,388 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 12:50:23,391 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 12:50:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 12:50:24,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 12:50:24,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 12:50:24,738 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2023-12-23 12:50:24,738 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 12:50:24,738 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 12:50:24,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1282423518] [2023-12-23 12:50:24,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1282423518] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 12:50:24,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 12:50:24,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 12:50:24,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997081259] [2023-12-23 12:50:24,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 12:50:24,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 12:50:24,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 12:50:24,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 12:50:24,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 12:50:24,746 INFO L87 Difference]: Start difference. First operand 195 states and 308 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-12-23 12:50:28,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.15s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:50:33,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:50:37,493 WARN L539 Checker$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 12:50:41,500 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 12:50:42,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 12:50:42,061 INFO L93 Difference]: Finished difference Result 579 states and 914 transitions. [2023-12-23 12:50:42,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 12:50:42,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 256 [2023-12-23 12:50:42,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 12:50:42,071 INFO L225 Difference]: With dead ends: 579 [2023-12-23 12:50:42,071 INFO L226 Difference]: Without dead ends: 385 [2023-12-23 12:50:42,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 12:50:42,074 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 142 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2023-12-23 12:50:42,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 428 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 3 Unknown, 0 Unchecked, 17.3s Time] [2023-12-23 12:50:42,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2023-12-23 12:50:42,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 383. [2023-12-23 12:50:42,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 210 states have (on average 1.2476190476190476) internal successors, (262), 210 states have internal predecessors, (262), 168 states have call successors, (168), 4 states have call predecessors, (168), 4 states have return successors, (168), 168 states have call predecessors, (168), 168 states have call successors, (168) [2023-12-23 12:50:42,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 598 transitions. [2023-12-23 12:50:42,143 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 598 transitions. Word has length 256 [2023-12-23 12:50:42,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 12:50:42,144 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 598 transitions. [2023-12-23 12:50:42,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-12-23 12:50:42,145 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 598 transitions. [2023-12-23 12:50:42,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-12-23 12:50:42,150 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 12:50:42,150 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:50:42,185 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 [2023-12-23 12:50:42,378 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 12:50:42,378 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 12:50:42,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 12:50:42,379 INFO L85 PathProgramCache]: Analyzing trace with hash -203856501, now seen corresponding path program 1 times [2023-12-23 12:50:42,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 12:50:42,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934042106] [2023-12-23 12:50:42,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 12:50:42,380 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 12:50:42,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 12:50:42,381 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 12:50:42,394 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 12:50:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 12:50:43,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 12:50:43,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 12:50:44,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2023-12-23 12:50:44,126 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 12:50:44,126 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 12:50:44,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1934042106] [2023-12-23 12:50:44,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1934042106] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 12:50:44,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 12:50:44,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 12:50:44,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878928120] [2023-12-23 12:50:44,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 12:50:44,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 12:50:44,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 12:50:44,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 12:50:44,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 12:50:44,129 INFO L87 Difference]: Start difference. First operand 383 states and 598 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-12-23 12:50:46,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result VALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 12:50:52,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.61s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 12:50:57,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.63s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 12:51:03,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.66s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 12:51:09,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 12:51:13,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:51:17,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 12:51:18,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 12:51:18,230 INFO L93 Difference]: Finished difference Result 1113 states and 1740 transitions. [2023-12-23 12:51:18,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 12:51:18,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 256 [2023-12-23 12:51:18,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 12:51:18,246 INFO L225 Difference]: With dead ends: 1113 [2023-12-23 12:51:18,246 INFO L226 Difference]: Without dead ends: 731 [2023-12-23 12:51:18,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 12:51:18,249 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 142 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.0s IncrementalHoareTripleChecker+Time [2023-12-23 12:51:18,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 408 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 6 Unknown, 0 Unchecked, 34.0s Time] [2023-12-23 12:51:18,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2023-12-23 12:51:18,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 397. [2023-12-23 12:51:18,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 224 states have (on average 1.2589285714285714) internal successors, (282), 224 states have internal predecessors, (282), 168 states have call successors, (168), 4 states have call predecessors, (168), 4 states have return successors, (168), 168 states have call predecessors, (168), 168 states have call successors, (168) [2023-12-23 12:51:18,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 618 transitions. [2023-12-23 12:51:18,329 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 618 transitions. Word has length 256 [2023-12-23 12:51:18,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 12:51:18,330 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 618 transitions. [2023-12-23 12:51:18,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-12-23 12:51:18,331 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 618 transitions. [2023-12-23 12:51:18,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-12-23 12:51:18,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 12:51:18,335 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:51:18,370 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 12:51:18,559 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 12:51:18,560 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 12:51:18,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 12:51:18,561 INFO L85 PathProgramCache]: Analyzing trace with hash 497208077, now seen corresponding path program 1 times [2023-12-23 12:51:18,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 12:51:18,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [605081850] [2023-12-23 12:51:18,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 12:51:18,562 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 12:51:18,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 12:51:18,564 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 12:51:18,596 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 12:51:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 12:51:19,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 12:51:19,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 12:51:25,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1383 proven. 90 refuted. 0 times theorem prover too weak. 1971 trivial. 0 not checked. [2023-12-23 12:51:25,385 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 12:51:28,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 33 proven. 90 refuted. 0 times theorem prover too weak. 3321 trivial. 0 not checked. [2023-12-23 12:51:28,204 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 12:51:28,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [605081850] [2023-12-23 12:51:28,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [605081850] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 12:51:28,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 12:51:28,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-23 12:51:28,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068784655] [2023-12-23 12:51:28,205 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 12:51:28,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-23 12:51:28,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 12:51:28,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-23 12:51:28,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-23 12:51:28,207 INFO L87 Difference]: Start difference. First operand 397 states and 618 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (72), 2 states have call predecessors, (72), 4 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) [2023-12-23 12:51:37,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:51:41,737 WARN L539 Checker$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 12:51:45,751 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 12:51:45,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 12:51:45,767 INFO L93 Difference]: Finished difference Result 627 states and 961 transitions. [2023-12-23 12:51:46,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-23 12:51:46,241 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (72), 2 states have call predecessors, (72), 4 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) Word has length 256 [2023-12-23 12:51:46,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 12:51:46,243 INFO L225 Difference]: With dead ends: 627 [2023-12-23 12:51:46,243 INFO L226 Difference]: Without dead ends: 231 [2023-12-23 12:51:46,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 504 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2023-12-23 12:51:46,246 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 116 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 115 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2023-12-23 12:51:46,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 230 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 222 Invalid, 3 Unknown, 0 Unchecked, 16.6s Time] [2023-12-23 12:51:46,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-12-23 12:51:46,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 215. [2023-12-23 12:51:46,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 126 states have (on average 1.2380952380952381) internal successors, (156), 126 states have internal predecessors, (156), 84 states have call successors, (84), 4 states have call predecessors, (84), 4 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-23 12:51:46,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 324 transitions. [2023-12-23 12:51:46,276 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 324 transitions. Word has length 256 [2023-12-23 12:51:46,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 12:51:46,276 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 324 transitions. [2023-12-23 12:51:46,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (72), 2 states have call predecessors, (72), 4 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) [2023-12-23 12:51:46,277 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 324 transitions. [2023-12-23 12:51:46,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-12-23 12:51:46,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 12:51:46,280 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:51:46,318 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 [2023-12-23 12:51:46,495 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 12:51:46,496 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 12:51:46,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 12:51:46,496 INFO L85 PathProgramCache]: Analyzing trace with hash -2022751857, now seen corresponding path program 1 times [2023-12-23 12:51:46,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 12:51:46,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1467887590] [2023-12-23 12:51:46,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 12:51:46,498 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 12:51:46,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 12:51:46,499 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 12:51:46,502 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 12:51:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 12:51:47,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-23 12:51:47,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 12:52:54,396 WARN L293 SmtUtils]: Spent 9.39s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 12:52:59,626 WARN L293 SmtUtils]: Spent 5.23s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 12:53:11,963 WARN L293 SmtUtils]: Spent 9.70s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 12:53:21,715 WARN L293 SmtUtils]: Spent 9.75s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 12:54:04,862 WARN L293 SmtUtils]: Spent 9.38s on a formula simplification that was a NOOP. DAG size: 40 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 12:54:43,464 WARN L293 SmtUtils]: Spent 7.42s on a formula simplification. DAG size of input: 47 DAG size of output: 42 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)