/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-500_file-7.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 05:14:52,308 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 05:14:52,387 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-23 05:14:52,392 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 05:14:52,393 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 05:14:52,416 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 05:14:52,417 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 05:14:52,417 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 05:14:52,418 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 05:14:52,421 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 05:14:52,421 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 05:14:52,421 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 05:14:52,422 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 05:14:52,423 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 05:14:52,423 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 05:14:52,423 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 05:14:52,423 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 05:14:52,424 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 05:14:52,424 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 05:14:52,424 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 05:14:52,424 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 05:14:52,425 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 05:14:52,425 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 05:14:52,425 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 05:14:52,425 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 05:14:52,425 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 05:14:52,426 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 05:14:52,426 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 05:14:52,426 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 05:14:52,426 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 05:14:52,427 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 05:14:52,427 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 05:14:52,427 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 05:14:52,427 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 05:14:52,427 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 05:14:52,428 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 05:14:52,428 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 05:14:52,428 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 05:14:52,428 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 05:14:52,428 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 05:14:52,428 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 05:14:52,428 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 05:14:52,429 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 05:14:52,429 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 05:14:52,429 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 05:14:52,430 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 05:14:52,430 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 05:14:52,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 05:14:52,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 05:14:52,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 05:14:52,662 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 05:14:52,662 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 05:14:52,664 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-7.i [2023-12-23 05:14:53,882 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 05:14:54,097 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 05:14:54,098 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-7.i [2023-12-23 05:14:54,116 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/438101879/9ceda056a4f145e884dbd047fb217084/FLAG6101e029e [2023-12-23 05:14:54,128 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/438101879/9ceda056a4f145e884dbd047fb217084 [2023-12-23 05:14:54,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 05:14:54,131 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 05:14:54,132 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 05:14:54,132 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 05:14:54,135 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 05:14:54,136 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:14:54" (1/1) ... [2023-12-23 05:14:54,137 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d54ee57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:14:54, skipping insertion in model container [2023-12-23 05:14:54,137 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:14:54" (1/1) ... [2023-12-23 05:14:54,172 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 05:14:54,284 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-500_file-7.i[915,928] [2023-12-23 05:14:54,425 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 05:14:54,453 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 05:14:54,462 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-500_file-7.i[915,928] [2023-12-23 05:14:54,538 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 05:14:54,554 INFO L206 MainTranslator]: Completed translation [2023-12-23 05:14:54,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:14:54 WrapperNode [2023-12-23 05:14:54,555 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 05:14:54,555 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 05:14:54,556 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 05:14:54,556 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 05:14:54,560 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:14:54" (1/1) ... [2023-12-23 05:14:54,583 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:14:54" (1/1) ... [2023-12-23 05:14:54,636 INFO L138 Inliner]: procedures = 27, calls = 114, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 665 [2023-12-23 05:14:54,637 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 05:14:54,637 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 05:14:54,637 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 05:14:54,638 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 05:14:54,646 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:14:54" (1/1) ... [2023-12-23 05:14:54,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:14:54" (1/1) ... [2023-12-23 05:14:54,656 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:14:54" (1/1) ... [2023-12-23 05:14:54,677 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-23 05:14:54,678 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:14:54" (1/1) ... [2023-12-23 05:14:54,678 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:14:54" (1/1) ... [2023-12-23 05:14:54,708 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:14:54" (1/1) ... [2023-12-23 05:14:54,713 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:14:54" (1/1) ... [2023-12-23 05:14:54,719 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:14:54" (1/1) ... [2023-12-23 05:14:54,723 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:14:54" (1/1) ... [2023-12-23 05:14:54,743 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 05:14:54,744 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 05:14:54,744 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 05:14:54,744 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 05:14:54,745 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:14:54" (1/1) ... [2023-12-23 05:14:54,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 05:14:54,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 05:14:54,782 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-23 05:14:54,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-23 05:14:54,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 05:14:54,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 05:14:54,862 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 05:14:54,923 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 05:14:54,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 05:14:54,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 05:14:55,044 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 05:14:55,046 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 05:15:28,981 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 05:15:29,016 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 05:15:29,016 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 05:15:29,016 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:15:29 BoogieIcfgContainer [2023-12-23 05:15:29,016 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 05:15:29,018 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 05:15:29,018 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 05:15:29,021 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 05:15:29,021 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 05:14:54" (1/3) ... [2023-12-23 05:15:29,022 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c5661f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:15:29, skipping insertion in model container [2023-12-23 05:15:29,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:14:54" (2/3) ... [2023-12-23 05:15:29,022 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c5661f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:15:29, skipping insertion in model container [2023-12-23 05:15:29,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:15:29" (3/3) ... [2023-12-23 05:15:29,023 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-7.i [2023-12-23 05:15:29,037 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 05:15:29,038 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 05:15:29,095 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 05:15:29,103 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;@470860b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 05:15:29,103 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 05:15:29,108 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 179 states have (on average 1.5865921787709498) internal successors, (284), 180 states have internal predecessors, (284), 101 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 101 states have call predecessors, (101), 101 states have call successors, (101) [2023-12-23 05:15:29,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2023-12-23 05:15:29,132 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:15:29,133 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 05:15:29,134 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:15:29,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:15:29,141 INFO L85 PathProgramCache]: Analyzing trace with hash 618949554, now seen corresponding path program 1 times [2023-12-23 05:15:29,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:15:29,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20558584] [2023-12-23 05:15:29,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:15:29,156 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:15:29,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:15:29,158 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 05:15:29,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-23 05:15:30,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:15:30,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 1045 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 05:15:30,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:15:30,616 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-23 05:15:30,616 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:15:30,617 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:15:30,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20558584] [2023-12-23 05:15:30,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20558584] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:15:30,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 05:15:30,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 05:15:30,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872333644] [2023-12-23 05:15:30,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:15:30,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 05:15:30,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:15:30,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 05:15:30,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 05:15:30,665 INFO L87 Difference]: Start difference. First operand has 283 states, 179 states have (on average 1.5865921787709498) internal successors, (284), 180 states have internal predecessors, (284), 101 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 101 states have call predecessors, (101), 101 states have call successors, (101) Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-23 05:15:32,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:15:32,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:15:32,278 INFO L93 Difference]: Finished difference Result 563 states and 1071 transitions. [2023-12-23 05:15:32,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 05:15:32,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 641 [2023-12-23 05:15:32,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:15:32,315 INFO L225 Difference]: With dead ends: 563 [2023-12-23 05:15:32,315 INFO L226 Difference]: Without dead ends: 281 [2023-12-23 05:15:32,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 639 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 05:15:32,324 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 473 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-23 05:15:32,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 469 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-23 05:15:32,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-12-23 05:15:32,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2023-12-23 05:15:32,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 178 states have (on average 1.5393258426966292) internal successors, (274), 178 states have internal predecessors, (274), 101 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 101 states have call predecessors, (101), 101 states have call successors, (101) [2023-12-23 05:15:32,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 476 transitions. [2023-12-23 05:15:32,391 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 476 transitions. Word has length 641 [2023-12-23 05:15:32,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:15:32,393 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 476 transitions. [2023-12-23 05:15:32,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-23 05:15:32,393 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 476 transitions. [2023-12-23 05:15:32,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2023-12-23 05:15:32,406 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:15:32,406 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 05:15:32,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-23 05:15:32,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:15:32,634 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:15:32,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:15:32,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1373752250, now seen corresponding path program 1 times [2023-12-23 05:15:32,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:15:32,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056001493] [2023-12-23 05:15:32,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:15:32,636 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:15:32,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:15:32,638 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 05:15:32,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-23 05:15:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:15:33,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 1043 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 05:15:33,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:15:34,184 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-23 05:15:34,184 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:15:34,185 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:15:34,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1056001493] [2023-12-23 05:15:34,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1056001493] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:15:34,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 05:15:34,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-23 05:15:34,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116340383] [2023-12-23 05:15:34,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:15:34,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 05:15:34,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:15:34,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 05:15:34,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-23 05:15:34,189 INFO L87 Difference]: Start difference. First operand 281 states and 476 transitions. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-23 05:15:36,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:15:38,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:15:38,302 INFO L93 Difference]: Finished difference Result 1429 states and 2418 transitions. [2023-12-23 05:15:38,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-23 05:15:38,302 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 641 [2023-12-23 05:15:38,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:15:38,311 INFO L225 Difference]: With dead ends: 1429 [2023-12-23 05:15:38,311 INFO L226 Difference]: Without dead ends: 1149 [2023-12-23 05:15:38,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 644 GetRequests, 639 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-23 05:15:38,338 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 1585 mSDsluCounter, 1470 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-23 05:15:38,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1585 Valid, 2085 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-23 05:15:38,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2023-12-23 05:15:38,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 930. [2023-12-23 05:15:38,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 930 states, 687 states have (on average 1.6346433770014557) internal successors, (1123), 690 states have internal predecessors, (1123), 238 states have call successors, (238), 4 states have call predecessors, (238), 4 states have return successors, (238), 235 states have call predecessors, (238), 238 states have call successors, (238) [2023-12-23 05:15:38,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1599 transitions. [2023-12-23 05:15:38,445 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1599 transitions. Word has length 641 [2023-12-23 05:15:38,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:15:38,449 INFO L495 AbstractCegarLoop]: Abstraction has 930 states and 1599 transitions. [2023-12-23 05:15:38,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-23 05:15:38,450 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1599 transitions. [2023-12-23 05:15:38,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2023-12-23 05:15:38,457 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:15:38,458 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 05:15:38,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-23 05:15:38,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:15:38,681 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:15:38,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:15:38,682 INFO L85 PathProgramCache]: Analyzing trace with hash 550698190, now seen corresponding path program 1 times [2023-12-23 05:15:38,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:15:38,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1445540736] [2023-12-23 05:15:38,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:15:38,683 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:15:38,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:15:38,685 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 05:15:38,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-23 05:15:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:15:39,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 05:15:39,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:15:43,136 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 9550 proven. 111 refuted. 0 times theorem prover too weak. 10539 trivial. 0 not checked. [2023-12-23 05:15:43,137 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:15:43,607 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:15:43,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1445540736] [2023-12-23 05:15:43,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1445540736] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:15:43,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [661863959] [2023-12-23 05:15:43,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:15:43,607 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:15:43,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:15:43,646 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:15:43,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-23 05:15:44,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:15:45,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 05:15:45,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:15:45,478 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-23 05:15:45,478 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:15:45,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [661863959] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:15:45,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 05:15:45,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-23 05:15:45,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054147281] [2023-12-23 05:15:45,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:15:45,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 05:15:45,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:15:45,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 05:15:45,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-23 05:15:45,482 INFO L87 Difference]: Start difference. First operand 930 states and 1599 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-23 05:15:47,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:15:47,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:15:47,508 INFO L93 Difference]: Finished difference Result 2199 states and 3761 transitions. [2023-12-23 05:15:47,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 05:15:47,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 642 [2023-12-23 05:15:47,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:15:47,517 INFO L225 Difference]: With dead ends: 2199 [2023-12-23 05:15:47,517 INFO L226 Difference]: Without dead ends: 1270 [2023-12-23 05:15:47,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1358 GetRequests, 1353 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-23 05:15:47,521 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 304 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-23 05:15:47,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 1027 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-23 05:15:47,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2023-12-23 05:15:47,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1267. [2023-12-23 05:15:47,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1267 states, 921 states have (on average 1.6069489685124865) internal successors, (1480), 926 states have internal predecessors, (1480), 338 states have call successors, (338), 7 states have call predecessors, (338), 7 states have return successors, (338), 333 states have call predecessors, (338), 338 states have call successors, (338) [2023-12-23 05:15:47,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1267 states to 1267 states and 2156 transitions. [2023-12-23 05:15:47,611 INFO L78 Accepts]: Start accepts. Automaton has 1267 states and 2156 transitions. Word has length 642 [2023-12-23 05:15:47,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:15:47,613 INFO L495 AbstractCegarLoop]: Abstraction has 1267 states and 2156 transitions. [2023-12-23 05:15:47,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-23 05:15:47,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1267 states and 2156 transitions. [2023-12-23 05:15:47,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2023-12-23 05:15:47,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:15:47,619 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 05:15:47,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-23 05:15:47,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2023-12-23 05:15:48,040 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=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 05:15:48,041 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:15:48,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:15:48,042 INFO L85 PathProgramCache]: Analyzing trace with hash -2046735156, now seen corresponding path program 1 times [2023-12-23 05:15:48,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:15:48,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1924135232] [2023-12-23 05:15:48,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:15:48,043 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:15:48,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:15:48,044 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 05:15:48,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-23 05:15:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:15:49,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 05:15:49,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:15:52,400 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 9550 proven. 111 refuted. 0 times theorem prover too weak. 10539 trivial. 0 not checked. [2023-12-23 05:15:52,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:15:52,847 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:15:52,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1924135232] [2023-12-23 05:15:52,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1924135232] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:15:52,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [560814379] [2023-12-23 05:15:52,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:15:52,848 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:15:52,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:15:52,849 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:15:52,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-23 05:15:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:15:54,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 05:15:54,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:15:54,781 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-23 05:15:54,781 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:15:54,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [560814379] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:15:54,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 05:15:54,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-23 05:15:54,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878997279] [2023-12-23 05:15:54,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:15:54,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 05:15:54,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:15:54,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 05:15:54,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-23 05:15:54,783 INFO L87 Difference]: Start difference. First operand 1267 states and 2156 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-23 05:15:55,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:15:55,916 INFO L93 Difference]: Finished difference Result 2817 states and 4766 transitions. [2023-12-23 05:15:55,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 05:15:55,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 642 [2023-12-23 05:15:55,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:15:55,923 INFO L225 Difference]: With dead ends: 2817 [2023-12-23 05:15:55,923 INFO L226 Difference]: Without dead ends: 1479 [2023-12-23 05:15:55,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1358 GetRequests, 1353 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-23 05:15:55,927 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 279 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-23 05:15:55,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 993 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-23 05:15:55,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2023-12-23 05:15:55,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 1067. [2023-12-23 05:15:56,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 820 states have (on average 1.6365853658536584) internal successors, (1342), 823 states have internal predecessors, (1342), 240 states have call successors, (240), 6 states have call predecessors, (240), 6 states have return successors, (240), 237 states have call predecessors, (240), 240 states have call successors, (240) [2023-12-23 05:15:56,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 1822 transitions. [2023-12-23 05:15:56,004 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 1822 transitions. Word has length 642 [2023-12-23 05:15:56,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:15:56,005 INFO L495 AbstractCegarLoop]: Abstraction has 1067 states and 1822 transitions. [2023-12-23 05:15:56,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-23 05:15:56,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 1822 transitions. [2023-12-23 05:15:56,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2023-12-23 05:15:56,010 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:15:56,010 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 05:15:56,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2023-12-23 05:15:56,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-23 05:15:56,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:15:56,428 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:15:56,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:15:56,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1020099188, now seen corresponding path program 1 times [2023-12-23 05:15:56,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:15:56,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517705409] [2023-12-23 05:15:56,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:15:56,430 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:15:56,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:15:56,432 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 05:15:56,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-23 05:15:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:15:57,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 05:15:57,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:16:00,996 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 9550 proven. 111 refuted. 0 times theorem prover too weak. 10539 trivial. 0 not checked. [2023-12-23 05:16:00,996 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:16:01,453 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:16:01,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [517705409] [2023-12-23 05:16:01,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [517705409] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:16:01,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1213185942] [2023-12-23 05:16:01,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:16:01,454 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:16:01,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:16:01,458 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:16:01,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-23 05:16:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:16:02,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 05:16:02,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:16:03,204 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-23 05:16:03,204 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:16:03,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1213185942] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:16:03,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 05:16:03,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-23 05:16:03,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724709793] [2023-12-23 05:16:03,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:16:03,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 05:16:03,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:16:03,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 05:16:03,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-23 05:16:03,207 INFO L87 Difference]: Start difference. First operand 1067 states and 1822 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-23 05:16:04,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:16:04,187 INFO L93 Difference]: Finished difference Result 3023 states and 5112 transitions. [2023-12-23 05:16:04,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 05:16:04,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 642 [2023-12-23 05:16:04,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:16:04,196 INFO L225 Difference]: With dead ends: 3023 [2023-12-23 05:16:04,196 INFO L226 Difference]: Without dead ends: 1957 [2023-12-23 05:16:04,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1358 GetRequests, 1353 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-23 05:16:04,199 INFO L413 NwaCegarLoop]: 859 mSDtfsCounter, 418 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-23 05:16:04,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 1327 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-23 05:16:04,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1957 states. [2023-12-23 05:16:04,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1957 to 1155. [2023-12-23 05:16:04,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 908 states have (on average 1.5969162995594715) internal successors, (1450), 911 states have internal predecessors, (1450), 240 states have call successors, (240), 6 states have call predecessors, (240), 6 states have return successors, (240), 237 states have call predecessors, (240), 240 states have call successors, (240) [2023-12-23 05:16:04,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1930 transitions. [2023-12-23 05:16:04,263 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1930 transitions. Word has length 642 [2023-12-23 05:16:04,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:16:04,264 INFO L495 AbstractCegarLoop]: Abstraction has 1155 states and 1930 transitions. [2023-12-23 05:16:04,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-23 05:16:04,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1930 transitions. [2023-12-23 05:16:04,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2023-12-23 05:16:04,269 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:16:04,269 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 05:16:04,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-12-23 05:16:04,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-23 05:16:04,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:16:04,692 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:16:04,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:16:04,693 INFO L85 PathProgramCache]: Analyzing trace with hash -761933750, now seen corresponding path program 1 times [2023-12-23 05:16:04,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:16:04,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482406507] [2023-12-23 05:16:04,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:16:04,694 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:16:04,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:16:04,696 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) [2023-12-23 05:16:04,699 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 [2023-12-23 05:16:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:16:05,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 05:16:05,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:16:09,215 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 9550 proven. 111 refuted. 0 times theorem prover too weak. 10539 trivial. 0 not checked. [2023-12-23 05:16:09,216 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:16:09,640 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:16:09,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482406507] [2023-12-23 05:16:09,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482406507] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:16:09,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [192639613] [2023-12-23 05:16:09,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:16:09,641 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:16:09,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:16:09,642 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:16:09,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-12-23 05:16:12,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:16:12,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 05:16:12,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:16:21,610 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-23 05:16:21,610 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:16:21,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [192639613] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:16:21,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 05:16:21,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-12-23 05:16:21,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569901749] [2023-12-23 05:16:21,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:16:21,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 05:16:21,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:16:21,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 05:16:21,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-23 05:16:21,613 INFO L87 Difference]: Start difference. First operand 1155 states and 1930 transitions. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 4 states have internal predecessors, (140), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-23 05:16:26,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:16:26,944 INFO L93 Difference]: Finished difference Result 5459 states and 9082 transitions. [2023-12-23 05:16:26,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-23 05:16:26,945 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 4 states have internal predecessors, (140), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 642 [2023-12-23 05:16:26,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:16:26,959 INFO L225 Difference]: With dead ends: 5459 [2023-12-23 05:16:26,959 INFO L226 Difference]: Without dead ends: 4305 [2023-12-23 05:16:26,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1361 GetRequests, 1351 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-23 05:16:26,963 INFO L413 NwaCegarLoop]: 682 mSDtfsCounter, 1399 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1399 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 476 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-23 05:16:26,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1399 Valid, 1627 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [476 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-23 05:16:26,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4305 states. [2023-12-23 05:16:27,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4305 to 4297. [2023-12-23 05:16:27,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4297 states, 3380 states have (on average 1.5798816568047338) internal successors, (5340), 3394 states have internal predecessors, (5340), 892 states have call successors, (892), 24 states have call predecessors, (892), 24 states have return successors, (892), 878 states have call predecessors, (892), 892 states have call successors, (892) [2023-12-23 05:16:27,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4297 states to 4297 states and 7124 transitions. [2023-12-23 05:16:27,231 INFO L78 Accepts]: Start accepts. Automaton has 4297 states and 7124 transitions. Word has length 642 [2023-12-23 05:16:27,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:16:27,232 INFO L495 AbstractCegarLoop]: Abstraction has 4297 states and 7124 transitions. [2023-12-23 05:16:27,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 4 states have internal predecessors, (140), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-23 05:16:27,232 INFO L276 IsEmpty]: Start isEmpty. Operand 4297 states and 7124 transitions. [2023-12-23 05:16:27,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2023-12-23 05:16:27,239 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:16:27,239 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 05:16:27,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2023-12-23 05:16:27,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-23 05:16:27,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:16:27,663 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:16:27,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:16:27,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1504447436, now seen corresponding path program 1 times [2023-12-23 05:16:27,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:16:27,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1745114883] [2023-12-23 05:16:27,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:16:27,665 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:16:27,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:16:27,666 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 05:16:27,667 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 (12)] Waiting until timeout for monitored process [2023-12-23 05:16:28,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:16:28,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 05:16:28,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:16:32,089 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 9550 proven. 111 refuted. 0 times theorem prover too weak. 10539 trivial. 0 not checked. [2023-12-23 05:16:32,089 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:16:32,510 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:16:32,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1745114883] [2023-12-23 05:16:32,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1745114883] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:16:32,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [390549313] [2023-12-23 05:16:32,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:16:32,511 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:16:32,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:16:32,512 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:16:32,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-12-23 05:16:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:16:37,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 05:16:37,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:16:37,771 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-23 05:16:37,772 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:16:37,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [390549313] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:16:37,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 05:16:37,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-23 05:16:37,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932614698] [2023-12-23 05:16:37,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:16:37,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 05:16:37,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:16:37,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 05:16:37,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-23 05:16:37,774 INFO L87 Difference]: Start difference. First operand 4297 states and 7124 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-23 05:16:39,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:16:39,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:16:39,498 INFO L93 Difference]: Finished difference Result 12453 states and 20620 transitions. [2023-12-23 05:16:39,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 05:16:39,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 642 [2023-12-23 05:16:39,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:16:39,528 INFO L225 Difference]: With dead ends: 12453 [2023-12-23 05:16:39,528 INFO L226 Difference]: Without dead ends: 8157 [2023-12-23 05:16:39,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1358 GetRequests, 1353 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-23 05:16:39,539 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 271 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-23 05:16:39,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 1075 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-23 05:16:39,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8157 states. [2023-12-23 05:16:40,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8157 to 8147. [2023-12-23 05:16:40,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8147 states, 6478 states have (on average 1.5696202531645569) internal successors, (10168), 6508 states have internal predecessors, (10168), 1628 states have call successors, (1628), 40 states have call predecessors, (1628), 40 states have return successors, (1628), 1598 states have call predecessors, (1628), 1628 states have call successors, (1628) [2023-12-23 05:16:40,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8147 states to 8147 states and 13424 transitions. [2023-12-23 05:16:40,077 INFO L78 Accepts]: Start accepts. Automaton has 8147 states and 13424 transitions. Word has length 642 [2023-12-23 05:16:40,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:16:40,077 INFO L495 AbstractCegarLoop]: Abstraction has 8147 states and 13424 transitions. [2023-12-23 05:16:40,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-23 05:16:40,078 INFO L276 IsEmpty]: Start isEmpty. Operand 8147 states and 13424 transitions. [2023-12-23 05:16:40,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2023-12-23 05:16:40,090 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:16:40,090 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 05:16:40,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2023-12-23 05:16:40,337 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 (12)] Forceful destruction successful, exit code 0 [2023-12-23 05:16:40,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:16:40,505 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:16:40,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:16:40,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1771297812, now seen corresponding path program 1 times [2023-12-23 05:16:40,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:16:40,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731980185] [2023-12-23 05:16:40,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:16:40,509 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:16:40,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:16:40,511 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 05:16:40,545 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 (14)] Waiting until timeout for monitored process [2023-12-23 05:16:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:16:41,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 05:16:41,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:16:45,024 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 9550 proven. 111 refuted. 0 times theorem prover too weak. 10539 trivial. 0 not checked. [2023-12-23 05:16:45,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:16:45,451 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:16:45,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731980185] [2023-12-23 05:16:45,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [731980185] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:16:45,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [562709058] [2023-12-23 05:16:45,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:16:45,452 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:16:45,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:16:45,454 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:16:45,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2023-12-23 05:16:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:16:50,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 05:16:50,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:16:53,906 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 9550 proven. 111 refuted. 0 times theorem prover too weak. 10539 trivial. 0 not checked. [2023-12-23 05:16:53,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:16:54,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [562709058] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:16:54,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 05:16:54,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-12-23 05:16:54,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788452997] [2023-12-23 05:16:54,238 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 05:16:54,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 05:16:54,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:16:54,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 05:16:54,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-23 05:16:54,240 INFO L87 Difference]: Start difference. First operand 8147 states and 13424 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (101), 2 states have call predecessors, (101), 3 states have return successors, (101), 2 states have call predecessors, (101), 2 states have call successors, (101) [2023-12-23 05:16:59,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:16:59,663 INFO L93 Difference]: Finished difference Result 16389 states and 26939 transitions. [2023-12-23 05:16:59,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-23 05:16:59,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (101), 2 states have call predecessors, (101), 3 states have return successors, (101), 2 states have call predecessors, (101), 2 states have call successors, (101) Word has length 642 [2023-12-23 05:16:59,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:16:59,710 INFO L225 Difference]: With dead ends: 16389 [2023-12-23 05:16:59,710 INFO L226 Difference]: Without dead ends: 8243 [2023-12-23 05:16:59,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1439 GetRequests, 1431 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-23 05:16:59,722 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 297 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-23 05:16:59,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 885 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-23 05:16:59,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8243 states. [2023-12-23 05:17:00,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8243 to 8163. [2023-12-23 05:17:00,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8163 states, 6490 states have (on average 1.5636363636363637) internal successors, (10148), 6520 states have internal predecessors, (10148), 1628 states have call successors, (1628), 44 states have call predecessors, (1628), 44 states have return successors, (1628), 1598 states have call predecessors, (1628), 1628 states have call successors, (1628) [2023-12-23 05:17:00,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8163 states to 8163 states and 13404 transitions. [2023-12-23 05:17:00,244 INFO L78 Accepts]: Start accepts. Automaton has 8163 states and 13404 transitions. Word has length 642 [2023-12-23 05:17:00,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:17:00,244 INFO L495 AbstractCegarLoop]: Abstraction has 8163 states and 13404 transitions. [2023-12-23 05:17:00,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (101), 2 states have call predecessors, (101), 3 states have return successors, (101), 2 states have call predecessors, (101), 2 states have call successors, (101) [2023-12-23 05:17:00,245 INFO L276 IsEmpty]: Start isEmpty. Operand 8163 states and 13404 transitions. [2023-12-23 05:17:00,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2023-12-23 05:17:00,283 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:17:00,283 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 05:17:00,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2023-12-23 05:17:00,514 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 (14)] Forceful destruction successful, exit code 0 [2023-12-23 05:17:00,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:17:00,684 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:17:00,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:17:00,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1730623062, now seen corresponding path program 1 times [2023-12-23 05:17:00,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:17:00,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515809669] [2023-12-23 05:17:00,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:17:00,686 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:17:00,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:17:00,687 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 05:17:00,704 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 (16)] Waiting until timeout for monitored process [2023-12-23 05:17:01,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:17:01,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 1039 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 05:17:01,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:17:03,591 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 4500 proven. 36 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2023-12-23 05:17:03,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:17:05,091 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 264 proven. 36 refuted. 0 times theorem prover too weak. 19900 trivial. 0 not checked. [2023-12-23 05:17:05,094 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:17:05,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515809669] [2023-12-23 05:17:05,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [515809669] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 05:17:05,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 05:17:05,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-23 05:17:05,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107170902] [2023-12-23 05:17:05,095 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 05:17:05,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 05:17:05,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:17:05,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 05:17:05,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 05:17:05,098 INFO L87 Difference]: Start difference. First operand 8163 states and 13404 transitions. Second operand has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 2 states have call successors, (113), 2 states have call predecessors, (113), 4 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2023-12-23 05:17:10,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:17:10,766 INFO L93 Difference]: Finished difference Result 16417 states and 26897 transitions. [2023-12-23 05:17:10,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 05:17:10,788 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 2 states have call successors, (113), 2 states have call predecessors, (113), 4 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) Word has length 642 [2023-12-23 05:17:10,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:17:10,821 INFO L225 Difference]: With dead ends: 16417 [2023-12-23 05:17:10,821 INFO L226 Difference]: Without dead ends: 8255 [2023-12-23 05:17:10,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1286 GetRequests, 1276 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-23 05:17:10,864 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 523 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-23 05:17:10,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 892 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-23 05:17:10,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8255 states. [2023-12-23 05:17:11,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8255 to 8171. [2023-12-23 05:17:11,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8171 states, 6496 states have (on average 1.5532635467980296) internal successors, (10090), 6526 states have internal predecessors, (10090), 1628 states have call successors, (1628), 46 states have call predecessors, (1628), 46 states have return successors, (1628), 1598 states have call predecessors, (1628), 1628 states have call successors, (1628) [2023-12-23 05:17:11,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8171 states to 8171 states and 13346 transitions. [2023-12-23 05:17:11,402 INFO L78 Accepts]: Start accepts. Automaton has 8171 states and 13346 transitions. Word has length 642 [2023-12-23 05:17:11,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:17:11,403 INFO L495 AbstractCegarLoop]: Abstraction has 8171 states and 13346 transitions. [2023-12-23 05:17:11,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 2 states have call successors, (113), 2 states have call predecessors, (113), 4 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2023-12-23 05:17:11,403 INFO L276 IsEmpty]: Start isEmpty. Operand 8171 states and 13346 transitions. [2023-12-23 05:17:11,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2023-12-23 05:17:11,413 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:17:11,414 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 05:17:11,462 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 (16)] Forceful destruction successful, exit code 0 [2023-12-23 05:17:11,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:17:11,628 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:17:11,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:17:11,629 INFO L85 PathProgramCache]: Analyzing trace with hash -855768083, now seen corresponding path program 1 times [2023-12-23 05:17:11,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:17:11,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1976977059] [2023-12-23 05:17:11,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:17:11,630 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:17:11,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:17:11,649 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 05:17:11,682 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 (17)] Waiting until timeout for monitored process [2023-12-23 05:17:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:17:12,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-23 05:17:12,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:17:20,355 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 10415 proven. 171 refuted. 0 times theorem prover too weak. 9614 trivial. 0 not checked. [2023-12-23 05:17:20,355 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:17:25,665 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 711 proven. 180 refuted. 0 times theorem prover too weak. 19309 trivial. 0 not checked. [2023-12-23 05:17:25,665 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:17:25,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1976977059] [2023-12-23 05:17:25,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1976977059] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 05:17:25,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 05:17:25,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2023-12-23 05:17:25,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637402742] [2023-12-23 05:17:25,666 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 05:17:25,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-23 05:17:25,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:17:25,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-23 05:17:25,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2023-12-23 05:17:25,668 INFO L87 Difference]: Start difference. First operand 8171 states and 13346 transitions. Second operand has 18 states, 18 states have (on average 9.333333333333334) internal successors, (168), 18 states have internal predecessors, (168), 4 states have call successors, (135), 4 states have call predecessors, (135), 10 states have return successors, (136), 4 states have call predecessors, (136), 4 states have call successors, (136) [2023-12-23 05:17:36,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:17:37,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:17:37,225 INFO L93 Difference]: Finished difference Result 15697 states and 25817 transitions. [2023-12-23 05:17:37,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-23 05:17:37,250 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 9.333333333333334) internal successors, (168), 18 states have internal predecessors, (168), 4 states have call successors, (135), 4 states have call predecessors, (135), 10 states have return successors, (136), 4 states have call predecessors, (136), 4 states have call successors, (136) Word has length 643 [2023-12-23 05:17:37,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:17:37,271 INFO L225 Difference]: With dead ends: 15697 [2023-12-23 05:17:37,271 INFO L226 Difference]: Without dead ends: 7527 [2023-12-23 05:17:37,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1307 GetRequests, 1270 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=431, Invalid=975, Unknown=0, NotChecked=0, Total=1406 [2023-12-23 05:17:37,288 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 1331 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 922 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 1348 SdHoareTripleChecker+Invalid, 1940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 922 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-12-23 05:17:37,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1331 Valid, 1348 Invalid, 1940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [922 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2023-12-23 05:17:37,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7527 states. [2023-12-23 05:17:37,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7527 to 7413. [2023-12-23 05:17:37,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7413 states, 5738 states have (on average 1.5594283722551412) internal successors, (8948), 5768 states have internal predecessors, (8948), 1624 states have call successors, (1624), 50 states have call predecessors, (1624), 50 states have return successors, (1624), 1594 states have call predecessors, (1624), 1624 states have call successors, (1624) [2023-12-23 05:17:37,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7413 states to 7413 states and 12196 transitions. [2023-12-23 05:17:37,797 INFO L78 Accepts]: Start accepts. Automaton has 7413 states and 12196 transitions. Word has length 643 [2023-12-23 05:17:37,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:17:37,797 INFO L495 AbstractCegarLoop]: Abstraction has 7413 states and 12196 transitions. [2023-12-23 05:17:37,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.333333333333334) internal successors, (168), 18 states have internal predecessors, (168), 4 states have call successors, (135), 4 states have call predecessors, (135), 10 states have return successors, (136), 4 states have call predecessors, (136), 4 states have call successors, (136) [2023-12-23 05:17:37,798 INFO L276 IsEmpty]: Start isEmpty. Operand 7413 states and 12196 transitions. [2023-12-23 05:17:37,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2023-12-23 05:17:37,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:17:37,807 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 05:17:37,837 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 (17)] Ended with exit code 0 [2023-12-23 05:17:38,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:17:38,021 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:17:38,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:17:38,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1247947027, now seen corresponding path program 1 times [2023-12-23 05:17:38,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:17:38,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2054673781] [2023-12-23 05:17:38,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:17:38,023 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:17:38,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:17:38,024 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 05:17:38,059 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 (18)] Waiting until timeout for monitored process [2023-12-23 05:17:38,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:17:38,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 05:17:38,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:17:40,882 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 4500 proven. 36 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2023-12-23 05:17:40,883 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:17:42,671 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 264 proven. 36 refuted. 0 times theorem prover too weak. 19900 trivial. 0 not checked. [2023-12-23 05:17:42,671 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:17:42,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2054673781] [2023-12-23 05:17:42,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2054673781] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 05:17:42,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 05:17:42,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-23 05:17:42,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598545050] [2023-12-23 05:17:42,672 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 05:17:42,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-23 05:17:42,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:17:42,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-23 05:17:42,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-23 05:17:42,674 INFO L87 Difference]: Start difference. First operand 7413 states and 12196 transitions. Second operand has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 2 states have call successors, (113), 2 states have call predecessors, (113), 4 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2023-12-23 05:17:49,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:17:50,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:17:55,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:17:55,243 INFO L93 Difference]: Finished difference Result 18724 states and 31143 transitions. [2023-12-23 05:17:55,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-23 05:17:55,244 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 2 states have call successors, (113), 2 states have call predecessors, (113), 4 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) Word has length 643 [2023-12-23 05:17:55,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:17:55,273 INFO L225 Difference]: With dead ends: 18724 [2023-12-23 05:17:55,274 INFO L226 Difference]: Without dead ends: 11312 [2023-12-23 05:17:55,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1296 GetRequests, 1278 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-23 05:17:55,289 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 563 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 1963 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2023-12-23 05:17:55,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 1963 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2023-12-23 05:17:55,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11312 states. [2023-12-23 05:17:55,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11312 to 7607. [2023-12-23 05:17:55,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7607 states, 5823 states have (on average 1.5402713377983857) internal successors, (8969), 5854 states have internal predecessors, (8969), 1725 states have call successors, (1725), 58 states have call predecessors, (1725), 58 states have return successors, (1725), 1694 states have call predecessors, (1725), 1725 states have call successors, (1725) [2023-12-23 05:17:55,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7607 states to 7607 states and 12419 transitions. [2023-12-23 05:17:55,932 INFO L78 Accepts]: Start accepts. Automaton has 7607 states and 12419 transitions. Word has length 643 [2023-12-23 05:17:55,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:17:55,952 INFO L495 AbstractCegarLoop]: Abstraction has 7607 states and 12419 transitions. [2023-12-23 05:17:55,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 2 states have call successors, (113), 2 states have call predecessors, (113), 4 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2023-12-23 05:17:55,953 INFO L276 IsEmpty]: Start isEmpty. Operand 7607 states and 12419 transitions. [2023-12-23 05:17:55,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2023-12-23 05:17:55,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:17:55,978 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 05:17:56,015 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 (18)] Forceful destruction successful, exit code 0 [2023-12-23 05:17:56,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:17:56,197 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:17:56,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:17:56,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1358076527, now seen corresponding path program 1 times [2023-12-23 05:17:56,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:17:56,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [357832872] [2023-12-23 05:17:56,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:17:56,199 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:17:56,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:17:56,201 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 05:17:56,211 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 (19)] Waiting until timeout for monitored process [2023-12-23 05:17:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:17:57,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-23 05:17:57,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:18:28,027 WARN L293 SmtUtils]: Spent 12.47s on a formula simplification that was a NOOP. DAG size: 73 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 05:18:55,588 WARN L293 SmtUtils]: Spent 10.90s on a formula simplification that was a NOOP. DAG size: 76 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 05:20:46,747 WARN L293 SmtUtils]: Spent 50.55s on a formula simplification that was a NOOP. DAG size: 81 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 05:22:43,989 WARN L293 SmtUtils]: Spent 56.29s on a formula simplification that was a NOOP. DAG size: 84 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)