/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-85.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 11:09:51,440 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 11:09:51,516 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 11:09:51,521 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 11:09:51,521 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 11:09:51,543 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 11:09:51,544 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 11:09:51,544 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 11:09:51,545 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 11:09:51,547 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 11:09:51,548 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 11:09:51,548 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 11:09:51,549 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 11:09:51,550 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 11:09:51,550 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 11:09:51,550 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 11:09:51,550 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 11:09:51,551 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 11:09:51,551 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 11:09:51,551 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 11:09:51,552 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 11:09:51,552 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 11:09:51,552 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 11:09:51,552 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 11:09:51,552 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 11:09:51,553 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 11:09:51,553 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 11:09:51,553 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 11:09:51,553 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 11:09:51,553 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 11:09:51,554 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 11:09:51,554 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 11:09:51,554 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 11:09:51,554 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 11:09:51,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 11:09:51,555 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 11:09:51,555 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 11:09:51,555 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 11:09:51,555 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 11:09:51,555 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 11:09:51,555 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 11:09:51,555 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 11:09:51,555 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 11:09:51,556 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 11:09:51,556 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 11:09:51,556 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 11:09:51,556 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 11:09:51,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 11:09:51,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 11:09:51,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 11:09:51,770 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 11:09:51,771 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 11:09:51,772 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-85.i [2023-12-16 11:09:52,936 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 11:09:53,125 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 11:09:53,126 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-85.i [2023-12-16 11:09:53,138 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25cf0e65b/a2793fc2fb864d94bdd44c2809c1143a/FLAG276ee9982 [2023-12-16 11:09:53,150 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25cf0e65b/a2793fc2fb864d94bdd44c2809c1143a [2023-12-16 11:09:53,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 11:09:53,153 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 11:09:53,154 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 11:09:53,155 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 11:09:53,159 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 11:09:53,160 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 11:09:53" (1/1) ... [2023-12-16 11:09:53,161 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c374265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:09:53, skipping insertion in model container [2023-12-16 11:09:53,161 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 11:09:53" (1/1) ... [2023-12-16 11:09:53,199 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 11:09:53,350 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-85.i[916,929] [2023-12-16 11:09:53,468 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 11:09:53,492 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 11:09:53,502 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-85.i[916,929] [2023-12-16 11:09:53,581 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 11:09:53,604 INFO L206 MainTranslator]: Completed translation [2023-12-16 11:09:53,604 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:09:53 WrapperNode [2023-12-16 11:09:53,605 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 11:09:53,606 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 11:09:53,606 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 11:09:53,606 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 11:09:53,611 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:09:53" (1/1) ... [2023-12-16 11:09:53,629 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:09:53" (1/1) ... [2023-12-16 11:09:53,667 INFO L138 Inliner]: procedures = 27, calls = 98, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 466 [2023-12-16 11:09:53,667 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 11:09:53,668 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 11:09:53,668 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 11:09:53,668 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 11:09:53,678 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:09:53" (1/1) ... [2023-12-16 11:09:53,678 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:09:53" (1/1) ... [2023-12-16 11:09:53,684 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:09:53" (1/1) ... [2023-12-16 11:09:53,699 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 11:09:53,699 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:09:53" (1/1) ... [2023-12-16 11:09:53,700 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:09:53" (1/1) ... [2023-12-16 11:09:53,758 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:09:53" (1/1) ... [2023-12-16 11:09:53,766 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:09:53" (1/1) ... [2023-12-16 11:09:53,770 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:09:53" (1/1) ... [2023-12-16 11:09:53,787 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:09:53" (1/1) ... [2023-12-16 11:09:53,793 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 11:09:53,794 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 11:09:53,794 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 11:09:53,794 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 11:09:53,795 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:09:53" (1/1) ... [2023-12-16 11:09:53,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 11:09:53,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 11:09:53,846 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 11:09:53,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 11:09:53,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 11:09:53,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 11:09:53,875 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 11:09:53,875 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 11:09:53,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 11:09:53,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 11:09:53,956 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 11:09:53,958 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 11:10:03,465 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 11:10:03,505 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 11:10:03,505 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 11:10:03,505 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 11:10:03 BoogieIcfgContainer [2023-12-16 11:10:03,505 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 11:10:03,507 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 11:10:03,507 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 11:10:03,509 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 11:10:03,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 11:09:53" (1/3) ... [2023-12-16 11:10:03,510 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ad21f0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 11:10:03, skipping insertion in model container [2023-12-16 11:10:03,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:09:53" (2/3) ... [2023-12-16 11:10:03,510 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ad21f0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 11:10:03, skipping insertion in model container [2023-12-16 11:10:03,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 11:10:03" (3/3) ... [2023-12-16 11:10:03,511 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-85.i [2023-12-16 11:10:03,524 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 11:10:03,524 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 11:10:03,561 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 11:10:03,566 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;@2f5d044a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 11:10:03,566 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 11:10:03,571 INFO L276 IsEmpty]: Start isEmpty. Operand has 204 states, 116 states have (on average 1.5172413793103448) internal successors, (176), 117 states have internal predecessors, (176), 85 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2023-12-16 11:10:03,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2023-12-16 11:10:03,593 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:10:03,594 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:10:03,594 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:10:03,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:10:03,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1126376581, now seen corresponding path program 1 times [2023-12-16 11:10:03,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:10:03,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1248108483] [2023-12-16 11:10:03,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:10:03,615 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:10:03,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:10:03,616 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 11:10:03,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 11:10:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:10:04,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 11:10:04,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:10:04,732 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 7124 proven. 0 refuted. 0 times theorem prover too weak. 7156 trivial. 0 not checked. [2023-12-16 11:10:04,732 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:10:04,733 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:10:04,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1248108483] [2023-12-16 11:10:04,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1248108483] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:10:04,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:10:04,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 11:10:04,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41844752] [2023-12-16 11:10:04,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:10:04,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 11:10:04,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:10:04,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 11:10:04,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 11:10:04,774 INFO L87 Difference]: Start difference. First operand has 204 states, 116 states have (on average 1.5172413793103448) internal successors, (176), 117 states have internal predecessors, (176), 85 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) Second operand has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (85), 2 states have call predecessors, (85), 2 states have return successors, (85), 2 states have call predecessors, (85), 2 states have call successors, (85) [2023-12-16 11:10:05,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:10:05,846 INFO L93 Difference]: Finished difference Result 405 states and 775 transitions. [2023-12-16 11:10:05,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 11:10:05,881 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (85), 2 states have call predecessors, (85), 2 states have return successors, (85), 2 states have call predecessors, (85), 2 states have call successors, (85) Word has length 514 [2023-12-16 11:10:05,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:10:05,888 INFO L225 Difference]: With dead ends: 405 [2023-12-16 11:10:05,888 INFO L226 Difference]: Without dead ends: 202 [2023-12-16 11:10:05,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 513 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 11:10:05,896 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 11:10:05,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 337 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 11:10:05,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2023-12-16 11:10:05,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2023-12-16 11:10:05,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 115 states have (on average 1.4782608695652173) internal successors, (170), 115 states have internal predecessors, (170), 85 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2023-12-16 11:10:05,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 340 transitions. [2023-12-16 11:10:05,949 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 340 transitions. Word has length 514 [2023-12-16 11:10:05,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:10:05,949 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 340 transitions. [2023-12-16 11:10:05,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (85), 2 states have call predecessors, (85), 2 states have return successors, (85), 2 states have call predecessors, (85), 2 states have call successors, (85) [2023-12-16 11:10:05,950 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 340 transitions. [2023-12-16 11:10:05,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2023-12-16 11:10:05,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:10:05,959 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:10:06,009 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 11:10:06,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:10:06,169 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:10:06,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:10:06,170 INFO L85 PathProgramCache]: Analyzing trace with hash 2027702551, now seen corresponding path program 1 times [2023-12-16 11:10:06,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:10:06,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1441937051] [2023-12-16 11:10:06,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:10:06,171 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:10:06,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:10:06,173 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:10:06,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 11:10:07,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:10:07,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 11:10:07,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:10:07,208 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14280 trivial. 0 not checked. [2023-12-16 11:10:07,208 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:10:07,209 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:10:07,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1441937051] [2023-12-16 11:10:07,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1441937051] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:10:07,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:10:07,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 11:10:07,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505676264] [2023-12-16 11:10:07,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:10:07,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 11:10:07,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:10:07,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 11:10:07,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 11:10:07,212 INFO L87 Difference]: Start difference. First operand 202 states and 340 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-16 11:10:09,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 11:10:09,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:10:09,114 INFO L93 Difference]: Finished difference Result 493 states and 834 transitions. [2023-12-16 11:10:09,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 11:10:09,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 514 [2023-12-16 11:10:09,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:10:09,121 INFO L225 Difference]: With dead ends: 493 [2023-12-16 11:10:09,121 INFO L226 Difference]: Without dead ends: 292 [2023-12-16 11:10:09,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 11:10:09,123 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 144 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-16 11:10:09,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 685 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-16 11:10:09,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-12-16 11:10:09,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 289. [2023-12-16 11:10:09,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 186 states have (on average 1.5483870967741935) internal successors, (288), 187 states have internal predecessors, (288), 100 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-16 11:10:09,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 488 transitions. [2023-12-16 11:10:09,152 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 488 transitions. Word has length 514 [2023-12-16 11:10:09,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:10:09,154 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 488 transitions. [2023-12-16 11:10:09,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-16 11:10:09,154 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 488 transitions. [2023-12-16 11:10:09,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2023-12-16 11:10:09,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:10:09,157 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:10:09,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-16 11:10:09,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:10:09,359 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:10:09,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:10:09,360 INFO L85 PathProgramCache]: Analyzing trace with hash 770471127, now seen corresponding path program 1 times [2023-12-16 11:10:09,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:10:09,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [457234601] [2023-12-16 11:10:09,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:10:09,361 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:10:09,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:10:09,380 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:10:09,391 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 (4)] Waiting until timeout for monitored process [2023-12-16 11:10:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:10:10,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 11:10:10,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:10:10,659 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14280 trivial. 0 not checked. [2023-12-16 11:10:10,660 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:10:10,660 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:10:10,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [457234601] [2023-12-16 11:10:10,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [457234601] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:10:10,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:10:10,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 11:10:10,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653926346] [2023-12-16 11:10:10,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:10:10,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 11:10:10,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:10:10,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 11:10:10,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 11:10:10,662 INFO L87 Difference]: Start difference. First operand 289 states and 488 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-16 11:10:12,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 11:10:13,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:10:13,191 INFO L93 Difference]: Finished difference Result 696 states and 1169 transitions. [2023-12-16 11:10:13,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 11:10:13,194 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 514 [2023-12-16 11:10:13,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:10:13,197 INFO L225 Difference]: With dead ends: 696 [2023-12-16 11:10:13,197 INFO L226 Difference]: Without dead ends: 379 [2023-12-16 11:10:13,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 511 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 11:10:13,199 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 266 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-16 11:10:13,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 1151 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-16 11:10:13,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2023-12-16 11:10:13,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 271. [2023-12-16 11:10:13,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 183 states have (on average 1.540983606557377) internal successors, (282), 183 states have internal predecessors, (282), 85 states have call successors, (85), 2 states have call predecessors, (85), 2 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2023-12-16 11:10:13,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 452 transitions. [2023-12-16 11:10:13,216 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 452 transitions. Word has length 514 [2023-12-16 11:10:13,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:10:13,217 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 452 transitions. [2023-12-16 11:10:13,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-16 11:10:13,218 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 452 transitions. [2023-12-16 11:10:13,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2023-12-16 11:10:13,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:10:13,221 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:10:13,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-16 11:10:13,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:10:13,437 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:10:13,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:10:13,437 INFO L85 PathProgramCache]: Analyzing trace with hash 15871443, now seen corresponding path program 1 times [2023-12-16 11:10:13,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:10:13,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [228261269] [2023-12-16 11:10:13,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:10:13,438 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:10:13,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:10:13,443 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:10:13,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 11:10:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:10:14,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 11:10:14,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:10:16,367 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 9193 proven. 189 refuted. 0 times theorem prover too weak. 4898 trivial. 0 not checked. [2023-12-16 11:10:16,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:10:16,945 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 201 proven. 51 refuted. 0 times theorem prover too weak. 14028 trivial. 0 not checked. [2023-12-16 11:10:16,945 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:10:16,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [228261269] [2023-12-16 11:10:16,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [228261269] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 11:10:16,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 11:10:16,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2023-12-16 11:10:16,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239204937] [2023-12-16 11:10:16,948 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 11:10:16,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 11:10:16,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:10:16,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 11:10:16,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-16 11:10:16,953 INFO L87 Difference]: Start difference. First operand 271 states and 452 transitions. Second operand has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 11 states have internal predecessors, (148), 4 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (133), 4 states have call predecessors, (133), 4 states have call successors, (133) [2023-12-16 11:10:20,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 11:10:20,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:10:20,681 INFO L93 Difference]: Finished difference Result 559 states and 918 transitions. [2023-12-16 11:10:20,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 11:10:20,715 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 11 states have internal predecessors, (148), 4 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (133), 4 states have call predecessors, (133), 4 states have call successors, (133) Word has length 514 [2023-12-16 11:10:20,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:10:20,718 INFO L225 Difference]: With dead ends: 559 [2023-12-16 11:10:20,718 INFO L226 Difference]: Without dead ends: 289 [2023-12-16 11:10:20,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1036 GetRequests, 1017 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=144, Invalid=276, Unknown=0, NotChecked=0, Total=420 [2023-12-16 11:10:20,720 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 583 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-16 11:10:20,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 537 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-16 11:10:20,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-12-16 11:10:20,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 283. [2023-12-16 11:10:20,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 192 states have (on average 1.484375) internal successors, (285), 192 states have internal predecessors, (285), 85 states have call successors, (85), 5 states have call predecessors, (85), 5 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2023-12-16 11:10:20,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 455 transitions. [2023-12-16 11:10:20,748 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 455 transitions. Word has length 514 [2023-12-16 11:10:20,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:10:20,750 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 455 transitions. [2023-12-16 11:10:20,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 11 states have internal predecessors, (148), 4 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (133), 4 states have call predecessors, (133), 4 states have call successors, (133) [2023-12-16 11:10:20,750 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 455 transitions. [2023-12-16 11:10:20,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2023-12-16 11:10:20,755 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:10:20,755 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:10:20,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 11:10:20,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:10:20,979 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:10:20,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:10:20,980 INFO L85 PathProgramCache]: Analyzing trace with hash -493601647, now seen corresponding path program 1 times [2023-12-16 11:10:20,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:10:20,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1954383765] [2023-12-16 11:10:20,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:10:20,981 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:10:20,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:10:20,983 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:10:21,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 11:10:21,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:10:21,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 11:10:22,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:10:22,036 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14280 trivial. 0 not checked. [2023-12-16 11:10:22,036 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:10:22,036 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:10:22,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1954383765] [2023-12-16 11:10:22,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1954383765] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:10:22,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:10:22,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 11:10:22,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32030028] [2023-12-16 11:10:22,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:10:22,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 11:10:22,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:10:22,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 11:10:22,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 11:10:22,038 INFO L87 Difference]: Start difference. First operand 283 states and 455 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-16 11:10:23,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 11:10:23,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:10:23,818 INFO L93 Difference]: Finished difference Result 847 states and 1363 transitions. [2023-12-16 11:10:23,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 11:10:23,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 514 [2023-12-16 11:10:23,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:10:23,822 INFO L225 Difference]: With dead ends: 847 [2023-12-16 11:10:23,822 INFO L226 Difference]: Without dead ends: 565 [2023-12-16 11:10:23,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 11:10:23,824 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 328 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-16 11:10:23,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 656 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-16 11:10:23,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2023-12-16 11:10:23,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 560. [2023-12-16 11:10:23,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 379 states have (on average 1.4775725593667546) internal successors, (560), 379 states have internal predecessors, (560), 170 states have call successors, (170), 10 states have call predecessors, (170), 10 states have return successors, (170), 170 states have call predecessors, (170), 170 states have call successors, (170) [2023-12-16 11:10:23,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 900 transitions. [2023-12-16 11:10:23,852 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 900 transitions. Word has length 514 [2023-12-16 11:10:23,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:10:23,853 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 900 transitions. [2023-12-16 11:10:23,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-16 11:10:23,853 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 900 transitions. [2023-12-16 11:10:23,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2023-12-16 11:10:23,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:10:23,856 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:10:23,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-16 11:10:24,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:10:24,063 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:10:24,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:10:24,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1807220943, now seen corresponding path program 1 times [2023-12-16 11:10:24,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:10:24,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616168119] [2023-12-16 11:10:24,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:10:24,066 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:10:24,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:10:24,068 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:10:24,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 11:10:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:10:25,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 815 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 11:10:25,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:10:25,334 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 3192 proven. 30 refuted. 0 times theorem prover too weak. 11058 trivial. 0 not checked. [2023-12-16 11:10:25,334 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:10:25,773 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 222 proven. 30 refuted. 0 times theorem prover too weak. 14028 trivial. 0 not checked. [2023-12-16 11:10:25,774 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:10:25,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [616168119] [2023-12-16 11:10:25,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [616168119] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 11:10:25,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 11:10:25,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 11:10:25,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660024349] [2023-12-16 11:10:25,774 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 11:10:25,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 11:10:25,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:10:25,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 11:10:25,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 11:10:25,776 INFO L87 Difference]: Start difference. First operand 560 states and 900 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 2 states have call successors, (95), 2 states have call predecessors, (95), 4 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) [2023-12-16 11:10:28,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 11:10:28,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:10:28,868 INFO L93 Difference]: Finished difference Result 1135 states and 1805 transitions. [2023-12-16 11:10:28,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 11:10:28,904 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 2 states have call successors, (95), 2 states have call predecessors, (95), 4 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) Word has length 514 [2023-12-16 11:10:28,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:10:28,907 INFO L225 Difference]: With dead ends: 1135 [2023-12-16 11:10:28,907 INFO L226 Difference]: Without dead ends: 576 [2023-12-16 11:10:28,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1030 GetRequests, 1020 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 11:10:28,909 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 331 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-16 11:10:28,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 541 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-16 11:10:28,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2023-12-16 11:10:28,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 560. [2023-12-16 11:10:28,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 377 states have (on average 1.4323607427055702) internal successors, (540), 377 states have internal predecessors, (540), 170 states have call successors, (170), 12 states have call predecessors, (170), 12 states have return successors, (170), 170 states have call predecessors, (170), 170 states have call successors, (170) [2023-12-16 11:10:28,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 880 transitions. [2023-12-16 11:10:28,933 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 880 transitions. Word has length 514 [2023-12-16 11:10:28,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:10:28,934 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 880 transitions. [2023-12-16 11:10:28,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 2 states have call successors, (95), 2 states have call predecessors, (95), 4 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) [2023-12-16 11:10:28,934 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 880 transitions. [2023-12-16 11:10:28,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2023-12-16 11:10:28,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:10:28,937 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:10:28,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 11:10:29,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:10:29,161 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:10:29,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:10:29,161 INFO L85 PathProgramCache]: Analyzing trace with hash 218873041, now seen corresponding path program 1 times [2023-12-16 11:10:29,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:10:29,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1484585713] [2023-12-16 11:10:29,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:10:29,162 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:10:29,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:10:29,168 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:10:29,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-16 11:10:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:10:30,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 11:10:30,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:10:32,077 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14280 trivial. 0 not checked. [2023-12-16 11:10:32,077 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:10:32,077 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:10:32,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1484585713] [2023-12-16 11:10:32,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1484585713] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:10:32,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:10:32,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 11:10:32,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166796876] [2023-12-16 11:10:32,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:10:32,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 11:10:32,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:10:32,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 11:10:32,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 11:10:32,079 INFO L87 Difference]: Start difference. First operand 560 states and 880 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-16 11:10:34,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-16 11:10:34,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:10:34,946 INFO L93 Difference]: Finished difference Result 1119 states and 1759 transitions. [2023-12-16 11:10:34,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 11:10:34,982 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 514 [2023-12-16 11:10:34,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:10:34,985 INFO L225 Difference]: With dead ends: 1119 [2023-12-16 11:10:34,985 INFO L226 Difference]: Without dead ends: 560 [2023-12-16 11:10:34,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 510 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 11:10:34,988 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 238 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-16 11:10:34,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 458 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-16 11:10:34,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2023-12-16 11:10:35,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2023-12-16 11:10:35,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 377 states have (on average 1.427055702917772) internal successors, (538), 377 states have internal predecessors, (538), 170 states have call successors, (170), 12 states have call predecessors, (170), 12 states have return successors, (170), 170 states have call predecessors, (170), 170 states have call successors, (170) [2023-12-16 11:10:35,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 878 transitions. [2023-12-16 11:10:35,044 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 878 transitions. Word has length 514 [2023-12-16 11:10:35,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:10:35,045 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 878 transitions. [2023-12-16 11:10:35,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-16 11:10:35,045 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 878 transitions. [2023-12-16 11:10:35,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2023-12-16 11:10:35,048 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:10:35,048 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:10:35,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-16 11:10:35,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:10:35,273 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:10:35,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:10:35,274 INFO L85 PathProgramCache]: Analyzing trace with hash 2015532327, now seen corresponding path program 1 times [2023-12-16 11:10:35,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:10:35,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002775044] [2023-12-16 11:10:35,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:10:35,276 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:10:35,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:10:35,285 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:10:35,340 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 (9)] Waiting until timeout for monitored process [2023-12-16 11:10:36,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:10:36,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 11:10:36,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:10:41,979 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 3564 proven. 216 refuted. 0 times theorem prover too weak. 10500 trivial. 0 not checked. [2023-12-16 11:10:41,980 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:10:43,781 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 36 proven. 216 refuted. 0 times theorem prover too weak. 14028 trivial. 0 not checked. [2023-12-16 11:10:43,782 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:10:43,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002775044] [2023-12-16 11:10:43,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002775044] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 11:10:43,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 11:10:43,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2023-12-16 11:10:43,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63895225] [2023-12-16 11:10:43,782 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 11:10:43,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 11:10:43,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:10:43,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 11:10:43,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-16 11:10:43,785 INFO L87 Difference]: Start difference. First operand 560 states and 878 transitions. Second operand has 14 states, 14 states have (on average 13.285714285714286) internal successors, (186), 14 states have internal predecessors, (186), 4 states have call successors, (170), 3 states have call predecessors, (170), 5 states have return successors, (170), 4 states have call predecessors, (170), 4 states have call successors, (170) [2023-12-16 11:10:48,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 11:10:54,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 11:10:54,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:10:54,818 INFO L93 Difference]: Finished difference Result 1628 states and 2533 transitions. [2023-12-16 11:10:54,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-16 11:10:54,820 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 13.285714285714286) internal successors, (186), 14 states have internal predecessors, (186), 4 states have call successors, (170), 3 states have call predecessors, (170), 5 states have return successors, (170), 4 states have call predecessors, (170), 4 states have call successors, (170) Word has length 515 [2023-12-16 11:10:54,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:10:54,825 INFO L225 Difference]: With dead ends: 1628 [2023-12-16 11:10:54,825 INFO L226 Difference]: Without dead ends: 1069 [2023-12-16 11:10:54,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1045 GetRequests, 1017 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=228, Invalid=584, Unknown=0, NotChecked=0, Total=812 [2023-12-16 11:10:54,827 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 504 mSDsluCounter, 1712 mSDsCounter, 0 mSdLazyCounter, 2114 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 1974 SdHoareTripleChecker+Invalid, 2378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 2114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2023-12-16 11:10:54,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 1974 Invalid, 2378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 2114 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2023-12-16 11:10:54,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2023-12-16 11:10:54,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 943. [2023-12-16 11:10:54,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 943 states, 644 states have (on average 1.420807453416149) internal successors, (915), 646 states have internal predecessors, (915), 277 states have call successors, (277), 21 states have call predecessors, (277), 21 states have return successors, (277), 275 states have call predecessors, (277), 277 states have call successors, (277) [2023-12-16 11:10:54,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1469 transitions. [2023-12-16 11:10:54,892 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1469 transitions. Word has length 515 [2023-12-16 11:10:54,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:10:54,893 INFO L495 AbstractCegarLoop]: Abstraction has 943 states and 1469 transitions. [2023-12-16 11:10:54,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.285714285714286) internal successors, (186), 14 states have internal predecessors, (186), 4 states have call successors, (170), 3 states have call predecessors, (170), 5 states have return successors, (170), 4 states have call predecessors, (170), 4 states have call successors, (170) [2023-12-16 11:10:54,893 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1469 transitions. [2023-12-16 11:10:54,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2023-12-16 11:10:54,896 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:10:54,896 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:10:54,924 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 (9)] Forceful destruction successful, exit code 0 [2023-12-16 11:10:55,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:10:55,110 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:10:55,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:10:55,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1263444003, now seen corresponding path program 1 times [2023-12-16 11:10:55,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:10:55,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1554016036] [2023-12-16 11:10:55,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:10:55,112 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:10:55,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:10:55,113 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:10:55,149 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 (10)] Waiting until timeout for monitored process [2023-12-16 11:10:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:10:56,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 815 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-16 11:10:56,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 11:11:03,492 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 11:11:03,500 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 11:11:03,500 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 (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 11:11:03,522 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 (10)] Forceful destruction successful, exit code 0 [2023-12-16 11:11:03,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:11:03,701 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 516 with TraceHistMax 85,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-7-2-1 context. [2023-12-16 11:11:03,705 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:11:03,706 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 11:11:03,708 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 11:11:03 BoogieIcfgContainer [2023-12-16 11:11:03,708 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 11:11:03,709 INFO L158 Benchmark]: Toolchain (without parser) took 70555.23ms. Allocated memory was 176.2MB in the beginning and 262.1MB in the end (delta: 86.0MB). Free memory was 122.6MB in the beginning and 108.0MB in the end (delta: 14.7MB). Peak memory consumption was 101.3MB. Max. memory is 8.0GB. [2023-12-16 11:11:03,709 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 176.2MB. Free memory is still 126.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 11:11:03,709 INFO L158 Benchmark]: CACSL2BoogieTranslator took 450.35ms. Allocated memory is still 176.2MB. Free memory was 122.6MB in the beginning and 98.1MB in the end (delta: 24.5MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-16 11:11:03,709 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.95ms. Allocated memory is still 176.2MB. Free memory was 97.8MB in the beginning and 93.3MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-16 11:11:03,709 INFO L158 Benchmark]: Boogie Preprocessor took 125.86ms. Allocated memory is still 176.2MB. Free memory was 93.3MB in the beginning and 140.3MB in the end (delta: -47.0MB). Peak memory consumption was 11.8MB. Max. memory is 8.0GB. [2023-12-16 11:11:03,710 INFO L158 Benchmark]: RCFGBuilder took 9711.07ms. Allocated memory is still 176.2MB. Free memory was 140.3MB in the beginning and 91.0MB in the end (delta: 49.3MB). Peak memory consumption was 49.3MB. Max. memory is 8.0GB. [2023-12-16 11:11:03,710 INFO L158 Benchmark]: TraceAbstraction took 60201.43ms. Allocated memory was 176.2MB in the beginning and 262.1MB in the end (delta: 86.0MB). Free memory was 90.5MB in the beginning and 108.0MB in the end (delta: -17.5MB). Peak memory consumption was 68.5MB. Max. memory is 8.0GB. [2023-12-16 11:11:03,711 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 176.2MB. Free memory is still 126.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 450.35ms. Allocated memory is still 176.2MB. Free memory was 122.6MB in the beginning and 98.1MB in the end (delta: 24.5MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 60.95ms. Allocated memory is still 176.2MB. Free memory was 97.8MB in the beginning and 93.3MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 125.86ms. Allocated memory is still 176.2MB. Free memory was 93.3MB in the beginning and 140.3MB in the end (delta: -47.0MB). Peak memory consumption was 11.8MB. Max. memory is 8.0GB. * RCFGBuilder took 9711.07ms. Allocated memory is still 176.2MB. Free memory was 140.3MB in the beginning and 91.0MB in the end (delta: 49.3MB). Peak memory consumption was 49.3MB. Max. memory is 8.0GB. * TraceAbstraction took 60201.43ms. Allocated memory was 176.2MB in the beginning and 262.1MB in the end (delta: 86.0MB). Free memory was 90.5MB in the beginning and 108.0MB in the end (delta: -17.5MB). Peak memory consumption was 68.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 516 with TraceHistMax 85,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-7-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 204 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 60.2s, OverallIterations: 9, TraceHistogramMax: 85, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 28.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2588 SdHoareTripleChecker+Valid, 26.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2394 mSDsluCounter, 6339 SdHoareTripleChecker+Invalid, 25.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3779 mSDsCounter, 1023 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3408 IncrementalHoareTripleChecker+Invalid, 4431 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1023 mSolverCounterUnsat, 2560 mSDtfsCounter, 3408 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5678 GetRequests, 5612 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=943occurred in iteration=8, InterpolantAutomatonStates: 63, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 264 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 6.7s SatisfiabilityAnalysisTime, 13.7s InterpolantComputationTime, 4113 NumberOfCodeBlocks, 4113 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 5645 ConstructedInterpolants, 1 QuantifiedInterpolants, 15093 SizeOfPredicates, 22 NumberOfNonLiveVariables, 6532 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 156348/157080 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown