/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-100_file-19.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 23:51:19,388 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 23:51:19,453 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-22 23:51:19,458 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 23:51:19,458 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 23:51:19,480 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 23:51:19,481 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 23:51:19,481 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 23:51:19,481 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 23:51:19,484 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 23:51:19,484 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 23:51:19,485 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 23:51:19,485 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 23:51:19,486 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 23:51:19,486 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 23:51:19,487 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 23:51:19,487 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 23:51:19,487 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 23:51:19,487 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 23:51:19,487 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 23:51:19,487 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 23:51:19,488 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 23:51:19,488 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 23:51:19,488 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 23:51:19,488 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 23:51:19,488 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 23:51:19,488 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 23:51:19,489 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 23:51:19,489 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 23:51:19,489 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 23:51:19,490 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 23:51:19,490 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 23:51:19,490 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 23:51:19,490 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 23:51:19,490 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 23:51:19,490 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 23:51:19,490 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 23:51:19,490 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 23:51:19,491 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 23:51:19,491 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 23:51:19,491 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 23:51:19,491 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 23:51:19,491 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 23:51:19,491 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 23:51:19,491 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 23:51:19,492 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 23:51:19,492 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 23:51:19,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 23:51:19,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 23:51:19,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 23:51:19,706 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 23:51:19,706 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 23:51:19,707 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-19.i [2023-12-22 23:51:20,839 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 23:51:21,011 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 23:51:21,012 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-19.i [2023-12-22 23:51:21,019 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4cc933b3/828f4c7e90ad483ea2345dfb8ef19b6b/FLAGdfa1cf8c0 [2023-12-22 23:51:21,029 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4cc933b3/828f4c7e90ad483ea2345dfb8ef19b6b [2023-12-22 23:51:21,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 23:51:21,032 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 23:51:21,033 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 23:51:21,033 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 23:51:21,038 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 23:51:21,039 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:51:21" (1/1) ... [2023-12-22 23:51:21,039 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51ebcc6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:51:21, skipping insertion in model container [2023-12-22 23:51:21,039 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:51:21" (1/1) ... [2023-12-22 23:51:21,062 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 23:51:21,173 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-100_file-19.i[916,929] [2023-12-22 23:51:21,230 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 23:51:21,242 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 23:51:21,254 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-100_file-19.i[916,929] [2023-12-22 23:51:21,316 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 23:51:21,341 INFO L206 MainTranslator]: Completed translation [2023-12-22 23:51:21,341 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:51:21 WrapperNode [2023-12-22 23:51:21,341 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 23:51:21,342 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 23:51:21,342 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 23:51:21,342 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 23:51:21,347 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:51:21" (1/1) ... [2023-12-22 23:51:21,370 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:51:21" (1/1) ... [2023-12-22 23:51:21,396 INFO L138 Inliner]: procedures = 27, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 290 [2023-12-22 23:51:21,397 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 23:51:21,397 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 23:51:21,397 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 23:51:21,398 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 23:51:21,423 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:51:21" (1/1) ... [2023-12-22 23:51:21,424 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:51:21" (1/1) ... [2023-12-22 23:51:21,436 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:51:21" (1/1) ... [2023-12-22 23:51:21,452 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]. [2023-12-22 23:51:21,453 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:51:21" (1/1) ... [2023-12-22 23:51:21,453 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:51:21" (1/1) ... [2023-12-22 23:51:21,463 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:51:21" (1/1) ... [2023-12-22 23:51:21,466 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:51:21" (1/1) ... [2023-12-22 23:51:21,468 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:51:21" (1/1) ... [2023-12-22 23:51:21,470 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:51:21" (1/1) ... [2023-12-22 23:51:21,473 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 23:51:21,474 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 23:51:21,474 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 23:51:21,474 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 23:51:21,474 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:51:21" (1/1) ... [2023-12-22 23:51:21,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 23:51:21,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 23:51:21,500 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) [2023-12-22 23:51:21,542 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 [2023-12-22 23:51:21,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 23:51:21,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 23:51:21,558 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-22 23:51:21,559 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-22 23:51:21,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 23:51:21,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 23:51:21,633 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 23:51:21,634 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 23:51:38,945 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 23:51:38,972 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 23:51:38,972 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-22 23:51:38,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:51:38 BoogieIcfgContainer [2023-12-22 23:51:38,972 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 23:51:38,974 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 23:51:38,974 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 23:51:38,976 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 23:51:38,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:51:21" (1/3) ... [2023-12-22 23:51:38,976 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4000cd5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:51:38, skipping insertion in model container [2023-12-22 23:51:38,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:51:21" (2/3) ... [2023-12-22 23:51:38,977 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4000cd5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:51:38, skipping insertion in model container [2023-12-22 23:51:38,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:51:38" (3/3) ... [2023-12-22 23:51:38,978 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-19.i [2023-12-22 23:51:38,989 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 23:51:38,989 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-22 23:51:39,022 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 23:51:39,026 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;@510ebae8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 23:51:39,027 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-22 23:51:39,029 INFO L276 IsEmpty]: Start isEmpty. Operand has 121 states, 68 states have (on average 1.4558823529411764) internal successors, (99), 69 states have internal predecessors, (99), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-22 23:51:39,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2023-12-22 23:51:39,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 23:51:39,042 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 23:51:39,043 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 23:51:39,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 23:51:39,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1715702893, now seen corresponding path program 1 times [2023-12-22 23:51:39,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 23:51:39,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565304150] [2023-12-22 23:51:39,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 23:51:39,057 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 [2023-12-22 23:51:39,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 23:51:39,059 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) [2023-12-22 23:51:39,073 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 [2023-12-22 23:51:40,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 23:51:40,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 23:51:40,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 23:51:40,161 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2498 proven. 0 refuted. 0 times theorem prover too weak. 2402 trivial. 0 not checked. [2023-12-22 23:51:40,161 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 23:51:40,161 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 23:51:40,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565304150] [2023-12-22 23:51:40,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565304150] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 23:51:40,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 23:51:40,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 23:51:40,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231658558] [2023-12-22 23:51:40,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 23:51:40,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 23:51:40,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 23:51:40,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 23:51:40,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 23:51:40,202 INFO L87 Difference]: Start difference. First operand has 121 states, 68 states have (on average 1.4558823529411764) internal successors, (99), 69 states have internal predecessors, (99), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2023-12-22 23:51:45,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 23:51:45,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 23:51:45,542 INFO L93 Difference]: Finished difference Result 239 states and 446 transitions. [2023-12-22 23:51:45,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 23:51:46,000 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 306 [2023-12-22 23:51:46,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 23:51:46,007 INFO L225 Difference]: With dead ends: 239 [2023-12-22 23:51:46,008 INFO L226 Difference]: Without dead ends: 119 [2023-12-22 23:51:46,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 23:51:46,012 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-22 23:51:46,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 188 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2023-12-22 23:51:46,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-12-22 23:51:46,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2023-12-22 23:51:46,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 67 states have (on average 1.3582089552238805) internal successors, (91), 67 states have internal predecessors, (91), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-22 23:51:46,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 191 transitions. [2023-12-22 23:51:46,074 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 191 transitions. Word has length 306 [2023-12-22 23:51:46,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 23:51:46,074 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 191 transitions. [2023-12-22 23:51:46,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2023-12-22 23:51:46,076 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 191 transitions. [2023-12-22 23:51:46,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2023-12-22 23:51:46,080 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 23:51:46,080 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 23:51:46,108 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-22 23:51:46,289 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 [2023-12-22 23:51:46,290 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 23:51:46,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 23:51:46,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1666365203, now seen corresponding path program 1 times [2023-12-22 23:51:46,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 23:51:46,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [788283922] [2023-12-22 23:51:46,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 23:51:46,292 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 [2023-12-22 23:51:46,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 23:51:46,298 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) [2023-12-22 23:51:46,304 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 [2023-12-22 23:51:47,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 23:51:47,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 23:51:47,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 23:51:47,637 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-22 23:51:47,637 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 23:51:47,638 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 23:51:47,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [788283922] [2023-12-22 23:51:47,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [788283922] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 23:51:47,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 23:51:47,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 23:51:47,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660434699] [2023-12-22 23:51:47,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 23:51:47,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 23:51:47,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 23:51:47,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 23:51:47,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 23:51:47,642 INFO L87 Difference]: Start difference. First operand 119 states and 191 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-22 23:51:53,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 23:51:57,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 23:52:01,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 23:52:01,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 23:52:01,599 INFO L93 Difference]: Finished difference Result 320 states and 513 transitions. [2023-12-22 23:52:01,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 23:52:01,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 307 [2023-12-22 23:52:01,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 23:52:01,604 INFO L225 Difference]: With dead ends: 320 [2023-12-22 23:52:01,605 INFO L226 Difference]: Without dead ends: 202 [2023-12-22 23:52:01,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 23:52:01,606 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 129 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2023-12-22 23:52:01,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 447 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 3 Unknown, 0 Unchecked, 13.9s Time] [2023-12-22 23:52:01,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2023-12-22 23:52:01,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 199. [2023-12-22 23:52:01,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 117 states have (on average 1.3846153846153846) internal successors, (162), 118 states have internal predecessors, (162), 79 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (79), 78 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-22 23:52:01,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 320 transitions. [2023-12-22 23:52:01,631 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 320 transitions. Word has length 307 [2023-12-22 23:52:01,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 23:52:01,657 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 320 transitions. [2023-12-22 23:52:01,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-22 23:52:01,657 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 320 transitions. [2023-12-22 23:52:01,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2023-12-22 23:52:01,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 23:52:01,662 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 23:52:01,709 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 [2023-12-22 23:52:01,862 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 [2023-12-22 23:52:01,863 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 23:52:01,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 23:52:01,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1197846484, now seen corresponding path program 1 times [2023-12-22 23:52:01,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 23:52:01,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804785705] [2023-12-22 23:52:01,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 23:52:01,865 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 23:52:01,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 23:52:01,870 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) [2023-12-22 23:52:01,870 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 [2023-12-22 23:52:03,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 23:52:03,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 23:52:03,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 23:52:07,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2493 proven. 69 refuted. 0 times theorem prover too weak. 2338 trivial. 0 not checked. [2023-12-22 23:52:07,820 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 23:52:09,538 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-22 23:52:09,539 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 23:52:09,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804785705] [2023-12-22 23:52:09,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804785705] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 23:52:09,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 23:52:09,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-22 23:52:09,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945038119] [2023-12-22 23:52:09,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 23:52:09,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 23:52:09,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 23:52:09,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 23:52:09,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-22 23:52:09,541 INFO L87 Difference]: Start difference. First operand 199 states and 320 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-22 23:52:15,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-22 23:52:19,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 23:52:23,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-22 23:52:25,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 23:52:25,319 INFO L93 Difference]: Finished difference Result 545 states and 868 transitions. [2023-12-22 23:52:25,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 23:52:25,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 308 [2023-12-22 23:52:25,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 23:52:25,324 INFO L225 Difference]: With dead ends: 545 [2023-12-22 23:52:25,324 INFO L226 Difference]: Without dead ends: 347 [2023-12-22 23:52:25,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 607 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-22 23:52:25,326 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 223 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2023-12-22 23:52:25,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 369 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 3 Unknown, 0 Unchecked, 15.7s Time] [2023-12-22 23:52:25,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-12-22 23:52:25,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 219. [2023-12-22 23:52:25,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 135 states have (on average 1.3925925925925926) internal successors, (188), 136 states have internal predecessors, (188), 79 states have call successors, (79), 4 states have call predecessors, (79), 4 states have return successors, (79), 78 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-22 23:52:25,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 346 transitions. [2023-12-22 23:52:25,351 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 346 transitions. Word has length 308 [2023-12-22 23:52:25,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 23:52:25,352 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 346 transitions. [2023-12-22 23:52:25,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-22 23:52:25,352 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 346 transitions. [2023-12-22 23:52:25,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2023-12-22 23:52:25,354 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 23:52:25,354 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 23:52:25,377 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 [2023-12-22 23:52:25,577 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 [2023-12-22 23:52:25,577 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 23:52:25,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 23:52:25,578 INFO L85 PathProgramCache]: Analyzing trace with hash 406372044, now seen corresponding path program 1 times [2023-12-22 23:52:25,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 23:52:25,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1148313071] [2023-12-22 23:52:25,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 23:52:25,579 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 [2023-12-22 23:52:25,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 23:52:25,580 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) [2023-12-22 23:52:25,585 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 [2023-12-22 23:52:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 23:52:26,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 23:52:26,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 23:52:30,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2121 proven. 39 refuted. 0 times theorem prover too weak. 2740 trivial. 0 not checked. [2023-12-22 23:52:30,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 23:52:33,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 249 proven. 42 refuted. 0 times theorem prover too weak. 4609 trivial. 0 not checked. [2023-12-22 23:52:33,437 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 23:52:33,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1148313071] [2023-12-22 23:52:33,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1148313071] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 23:52:33,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 23:52:33,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2023-12-22 23:52:33,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761837466] [2023-12-22 23:52:33,438 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 23:52:33,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-22 23:52:33,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 23:52:33,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-22 23:52:33,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-12-22 23:52:33,441 INFO L87 Difference]: Start difference. First operand 219 states and 346 transitions. Second operand has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 2 states have call successors, (64), 2 states have call predecessors, (64), 6 states have return successors, (65), 3 states have call predecessors, (65), 2 states have call successors, (65) [2023-12-22 23:52:44,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 23:52:48,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 23:52:52,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 23:52:56,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 23:53:00,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 23:53:00,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 23:53:00,662 INFO L93 Difference]: Finished difference Result 455 states and 705 transitions. [2023-12-22 23:53:01,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-22 23:53:01,147 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 2 states have call successors, (64), 2 states have call predecessors, (64), 6 states have return successors, (65), 3 states have call predecessors, (65), 2 states have call successors, (65) Word has length 308 [2023-12-22 23:53:01,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 23:53:01,149 INFO L225 Difference]: With dead ends: 455 [2023-12-22 23:53:01,149 INFO L226 Difference]: Without dead ends: 237 [2023-12-22 23:53:01,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 604 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=214, Invalid=436, Unknown=0, NotChecked=0, Total=650 [2023-12-22 23:53:01,151 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 244 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 286 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.3s IncrementalHoareTripleChecker+Time [2023-12-22 23:53:01,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 285 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 315 Invalid, 5 Unknown, 0 Unchecked, 25.3s Time] [2023-12-22 23:53:01,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-12-22 23:53:01,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 225. [2023-12-22 23:53:01,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 139 states have (on average 1.3381294964028776) internal successors, (186), 140 states have internal predecessors, (186), 79 states have call successors, (79), 6 states have call predecessors, (79), 6 states have return successors, (79), 78 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-22 23:53:01,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 344 transitions. [2023-12-22 23:53:01,174 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 344 transitions. Word has length 308 [2023-12-22 23:53:01,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 23:53:01,175 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 344 transitions. [2023-12-22 23:53:01,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 2 states have call successors, (64), 2 states have call predecessors, (64), 6 states have return successors, (65), 3 states have call predecessors, (65), 2 states have call successors, (65) [2023-12-22 23:53:01,175 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 344 transitions. [2023-12-22 23:53:01,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2023-12-22 23:53:01,176 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 23:53:01,177 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 23:53:01,203 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 [2023-12-22 23:53:01,392 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 [2023-12-22 23:53:01,393 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 23:53:01,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 23:53:01,393 INFO L85 PathProgramCache]: Analyzing trace with hash -604745206, now seen corresponding path program 1 times [2023-12-22 23:53:01,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 23:53:01,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1535753523] [2023-12-22 23:53:01,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 23:53:01,394 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 [2023-12-22 23:53:01,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 23:53:01,395 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) [2023-12-22 23:53:01,396 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 [2023-12-22 23:53:02,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 23:53:02,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 23:53:02,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 23:53:09,409 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-22 23:53:09,409 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 23:53:09,410 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 23:53:09,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1535753523] [2023-12-22 23:53:09,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1535753523] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 23:53:09,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 23:53:09,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 23:53:09,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98440588] [2023-12-22 23:53:09,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 23:53:09,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 23:53:09,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 23:53:09,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 23:53:09,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 23:53:09,412 INFO L87 Difference]: Start difference. First operand 225 states and 344 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-22 23:53:14,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 23:53:18,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 23:53:22,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 23:53:28,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 23:53:32,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 23:53:36,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 23:53:40,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 23:53:44,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 23:53:44,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 23:53:44,773 INFO L93 Difference]: Finished difference Result 717 states and 1094 transitions. [2023-12-22 23:53:45,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 23:53:45,259 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 308 [2023-12-22 23:53:45,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 23:53:45,263 INFO L225 Difference]: With dead ends: 717 [2023-12-22 23:53:45,263 INFO L226 Difference]: Without dead ends: 493 [2023-12-22 23:53:45,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 23:53:45,264 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 133 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 105 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.2s IncrementalHoareTripleChecker+Time [2023-12-22 23:53:45,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 572 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 9 Invalid, 8 Unknown, 0 Unchecked, 35.2s Time] [2023-12-22 23:53:45,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2023-12-22 23:53:45,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 447. [2023-12-22 23:53:45,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 276 states have (on average 1.326086956521739) internal successors, (366), 278 states have internal predecessors, (366), 158 states have call successors, (158), 12 states have call predecessors, (158), 12 states have return successors, (158), 156 states have call predecessors, (158), 158 states have call successors, (158) [2023-12-22 23:53:45,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 682 transitions. [2023-12-22 23:53:45,327 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 682 transitions. Word has length 308 [2023-12-22 23:53:45,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 23:53:45,327 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 682 transitions. [2023-12-22 23:53:45,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-22 23:53:45,327 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 682 transitions. [2023-12-22 23:53:45,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2023-12-22 23:53:45,329 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 23:53:45,329 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 23:53:45,354 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 [2023-12-22 23:53:45,545 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 [2023-12-22 23:53:45,546 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 23:53:45,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 23:53:45,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1191551220, now seen corresponding path program 1 times [2023-12-22 23:53:45,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 23:53:45,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1269205028] [2023-12-22 23:53:45,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 23:53:45,547 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 [2023-12-22 23:53:45,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 23:53:45,548 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) [2023-12-22 23:53:45,561 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 [2023-12-22 23:53:46,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 23:53:46,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 23:53:46,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 23:53:54,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-22 23:53:54,246 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 23:53:54,247 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 23:53:54,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1269205028] [2023-12-22 23:53:54,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1269205028] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 23:53:54,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 23:53:54,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 23:53:54,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855668442] [2023-12-22 23:53:54,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 23:53:54,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 23:53:54,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 23:53:54,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 23:53:54,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 23:53:54,248 INFO L87 Difference]: Start difference. First operand 447 states and 682 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-22 23:53:59,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 23:54:05,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.23s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 23:54:09,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 23:54:09,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 23:54:09,878 INFO L93 Difference]: Finished difference Result 1339 states and 2044 transitions. [2023-12-22 23:54:09,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 23:54:09,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 308 [2023-12-22 23:54:09,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 23:54:09,882 INFO L225 Difference]: With dead ends: 1339 [2023-12-22 23:54:09,882 INFO L226 Difference]: Without dead ends: 893 [2023-12-22 23:54:09,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 23:54:09,886 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 35 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2023-12-22 23:54:09,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 361 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 3 Unknown, 0 Unchecked, 15.6s Time] [2023-12-22 23:54:09,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2023-12-22 23:54:09,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 891. [2023-12-22 23:54:09,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 550 states have (on average 1.3127272727272727) internal successors, (722), 554 states have internal predecessors, (722), 316 states have call successors, (316), 24 states have call predecessors, (316), 24 states have return successors, (316), 312 states have call predecessors, (316), 316 states have call successors, (316) [2023-12-22 23:54:09,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1354 transitions. [2023-12-22 23:54:09,986 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1354 transitions. Word has length 308 [2023-12-22 23:54:09,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 23:54:09,987 INFO L495 AbstractCegarLoop]: Abstraction has 891 states and 1354 transitions. [2023-12-22 23:54:09,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-22 23:54:09,987 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1354 transitions. [2023-12-22 23:54:09,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2023-12-22 23:54:09,989 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 23:54:09,989 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 23:54:10,018 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 [2023-12-22 23:54:10,212 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 [2023-12-22 23:54:10,213 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 23:54:10,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 23:54:10,213 INFO L85 PathProgramCache]: Analyzing trace with hash -933385782, now seen corresponding path program 1 times [2023-12-22 23:54:10,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 23:54:10,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907806333] [2023-12-22 23:54:10,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 23:54:10,214 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 [2023-12-22 23:54:10,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 23:54:10,215 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) [2023-12-22 23:54:10,217 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 [2023-12-22 23:54:11,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 23:54:11,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 23:54:11,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 23:54:11,692 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-22 23:54:11,692 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 23:54:11,692 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 23:54:11,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1907806333] [2023-12-22 23:54:11,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1907806333] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 23:54:11,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 23:54:11,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 23:54:11,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99447093] [2023-12-22 23:54:11,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 23:54:11,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 23:54:11,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 23:54:11,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 23:54:11,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 23:54:11,694 INFO L87 Difference]: Start difference. First operand 891 states and 1354 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-22 23:54:15,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-22 23:54:17,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result VALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-22 23:54:23,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.63s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-22 23:54:28,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.62s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-22 23:54:34,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-22 23:54:38,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 23:54:42,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-22 23:54:43,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 23:54:43,489 INFO L93 Difference]: Finished difference Result 2635 states and 4000 transitions. [2023-12-22 23:54:43,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 23:54:43,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 308 [2023-12-22 23:54:43,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 23:54:43,505 INFO L225 Difference]: With dead ends: 2635 [2023-12-22 23:54:43,505 INFO L226 Difference]: Without dead ends: 1745 [2023-12-22 23:54:43,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 23:54:43,508 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 177 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.6s IncrementalHoareTripleChecker+Time [2023-12-22 23:54:43,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 520 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 5 Unknown, 0 Unchecked, 31.6s Time] [2023-12-22 23:54:43,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1745 states. [2023-12-22 23:54:43,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1745 to 899. [2023-12-22 23:54:43,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 558 states have (on average 1.3082437275985663) internal successors, (730), 562 states have internal predecessors, (730), 316 states have call successors, (316), 24 states have call predecessors, (316), 24 states have return successors, (316), 312 states have call predecessors, (316), 316 states have call successors, (316) [2023-12-22 23:54:43,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1362 transitions. [2023-12-22 23:54:43,594 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1362 transitions. Word has length 308 [2023-12-22 23:54:43,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 23:54:43,595 INFO L495 AbstractCegarLoop]: Abstraction has 899 states and 1362 transitions. [2023-12-22 23:54:43,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-22 23:54:43,595 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1362 transitions. [2023-12-22 23:54:43,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2023-12-22 23:54:43,596 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 23:54:43,597 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 23:54:43,626 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 [2023-12-22 23:54:43,812 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 [2023-12-22 23:54:43,813 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 23:54:43,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 23:54:43,813 INFO L85 PathProgramCache]: Analyzing trace with hash -253327412, now seen corresponding path program 1 times [2023-12-22 23:54:43,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 23:54:43,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1341075323] [2023-12-22 23:54:43,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 23:54:43,814 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 [2023-12-22 23:54:43,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 23:54:43,815 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) [2023-12-22 23:54:43,842 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 [2023-12-22 23:54:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 23:54:44,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 23:54:44,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 23:54:50,949 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 1743 proven. 114 refuted. 0 times theorem prover too weak. 3043 trivial. 0 not checked. [2023-12-22 23:54:50,950 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 23:54:53,808 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 33 proven. 114 refuted. 0 times theorem prover too weak. 4753 trivial. 0 not checked. [2023-12-22 23:54:53,808 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 23:54:53,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1341075323] [2023-12-22 23:54:53,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1341075323] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 23:54:53,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 23:54:53,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-22 23:54:53,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431664557] [2023-12-22 23:54:53,808 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 23:54:53,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-22 23:54:53,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 23:54:53,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-22 23:54:53,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-22 23:54:53,810 INFO L87 Difference]: Start difference. First operand 899 states and 1362 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 2 states have call successors, (88), 2 states have call predecessors, (88), 4 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2023-12-22 23:55:02,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 23:55:06,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 23:55:11,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 23:55:11,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 23:55:11,028 INFO L93 Difference]: Finished difference Result 1157 states and 1733 transitions. [2023-12-22 23:55:11,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-22 23:55:11,512 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 2 states have call successors, (88), 2 states have call predecessors, (88), 4 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) Word has length 308 [2023-12-22 23:55:11,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 23:55:11,514 INFO L225 Difference]: With dead ends: 1157 [2023-12-22 23:55:11,514 INFO L226 Difference]: Without dead ends: 259 [2023-12-22 23:55:11,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 608 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2023-12-22 23:55:11,517 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 130 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 132 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2023-12-22 23:55:11,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 277 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 264 Invalid, 3 Unknown, 0 Unchecked, 16.4s Time] [2023-12-22 23:55:11,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-12-22 23:55:11,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 237. [2023-12-22 23:55:11,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 149 states have (on average 1.261744966442953) internal successors, (188), 150 states have internal predecessors, (188), 79 states have call successors, (79), 8 states have call predecessors, (79), 8 states have return successors, (79), 78 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-22 23:55:11,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 346 transitions. [2023-12-22 23:55:11,539 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 346 transitions. Word has length 308 [2023-12-22 23:55:11,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 23:55:11,539 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 346 transitions. [2023-12-22 23:55:11,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 2 states have call successors, (88), 2 states have call predecessors, (88), 4 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2023-12-22 23:55:11,540 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 346 transitions. [2023-12-22 23:55:11,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2023-12-22 23:55:11,541 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 23:55:11,541 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 23:55:11,574 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 [2023-12-22 23:55:11,760 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 [2023-12-22 23:55:11,760 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 23:55:11,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 23:55:11,761 INFO L85 PathProgramCache]: Analyzing trace with hash -196069110, now seen corresponding path program 1 times [2023-12-22 23:55:11,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 23:55:11,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398125230] [2023-12-22 23:55:11,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 23:55:11,761 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 23:55:11,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 23:55:11,777 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) [2023-12-22 23:55:11,800 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 [2023-12-22 23:55:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 23:55:13,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-22 23:55:13,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 23:55:57,942 WARN L293 SmtUtils]: Spent 5.72s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-22 23:56:07,274 WARN L293 SmtUtils]: Spent 9.30s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-22 23:56:17,049 WARN L293 SmtUtils]: Spent 9.77s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-22 23:56:29,118 WARN L293 SmtUtils]: Spent 9.79s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-22 23:56:38,872 WARN L293 SmtUtils]: Spent 9.75s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-22 23:56:54,138 WARN L293 SmtUtils]: Spent 5.75s on a formula simplification that was a NOOP. DAG size: 31 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-22 23:57:20,192 WARN L293 SmtUtils]: Spent 8.09s on a formula simplification that was a NOOP. DAG size: 40 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-22 23:57:47,706 WARN L293 SmtUtils]: Spent 7.23s on a formula simplification. DAG size of input: 47 DAG size of output: 42 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)