/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-5.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 04:56:50,032 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 04:56:50,099 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 04:56:50,102 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 04:56:50,102 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 04:56:50,122 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 04:56:50,123 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 04:56:50,124 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 04:56:50,124 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 04:56:50,127 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 04:56:50,127 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 04:56:50,127 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 04:56:50,128 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 04:56:50,129 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 04:56:50,129 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 04:56:50,129 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 04:56:50,130 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 04:56:50,130 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 04:56:50,130 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 04:56:50,130 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 04:56:50,130 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 04:56:50,130 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 04:56:50,131 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 04:56:50,131 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 04:56:50,131 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 04:56:50,131 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 04:56:50,131 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 04:56:50,131 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 04:56:50,132 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 04:56:50,132 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 04:56:50,133 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 04:56:50,133 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 04:56:50,133 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 04:56:50,133 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 04:56:50,133 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 04:56:50,133 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 04:56:50,133 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 04:56:50,133 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 04:56:50,134 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 04:56:50,134 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 04:56:50,134 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 04:56:50,134 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 04:56:50,134 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 04:56:50,134 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 04:56:50,135 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 04:56:50,135 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 04:56:50,135 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 04:56:50,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 04:56:50,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 04:56:50,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 04:56:50,338 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 04:56:50,340 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 04:56:50,341 INFO L431 ainManager$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-5.i [2023-12-23 04:56:51,310 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 04:56:51,497 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 04:56:51,501 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-5.i [2023-12-23 04:56:51,510 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7d278033/3a41261315c44d419c85a7d28c142a64/FLAG4a3a790d5 [2023-12-23 04:56:51,519 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7d278033/3a41261315c44d419c85a7d28c142a64 [2023-12-23 04:56:51,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 04:56:51,521 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 04:56:51,522 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 04:56:51,522 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 04:56:51,529 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 04:56:51,529 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:56:51" (1/1) ... [2023-12-23 04:56:51,530 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54dd0e0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:51, skipping insertion in model container [2023-12-23 04:56:51,530 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:56:51" (1/1) ... [2023-12-23 04:56:51,566 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 04:56:51,659 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-5.i[915,928] [2023-12-23 04:56:51,809 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 04:56:51,822 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 04:56:51,842 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-5.i[915,928] [2023-12-23 04:56:51,912 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 04:56:51,929 INFO L206 MainTranslator]: Completed translation [2023-12-23 04:56:51,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:51 WrapperNode [2023-12-23 04:56:51,929 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 04:56:51,930 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 04:56:51,930 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 04:56:51,930 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 04:56:51,934 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:51" (1/1) ... [2023-12-23 04:56:51,950 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:51" (1/1) ... [2023-12-23 04:56:52,007 INFO L138 Inliner]: procedures = 27, calls = 98, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 629 [2023-12-23 04:56:52,008 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 04:56:52,008 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 04:56:52,008 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 04:56:52,008 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 04:56:52,015 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:51" (1/1) ... [2023-12-23 04:56:52,016 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:51" (1/1) ... [2023-12-23 04:56:52,025 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:51" (1/1) ... [2023-12-23 04:56:52,041 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 04:56:52,042 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:51" (1/1) ... [2023-12-23 04:56:52,042 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:51" (1/1) ... [2023-12-23 04:56:52,072 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:51" (1/1) ... [2023-12-23 04:56:52,077 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:51" (1/1) ... [2023-12-23 04:56:52,082 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:51" (1/1) ... [2023-12-23 04:56:52,084 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:51" (1/1) ... [2023-12-23 04:56:52,101 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 04:56:52,102 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 04:56:52,102 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 04:56:52,102 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 04:56:52,102 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:51" (1/1) ... [2023-12-23 04:56:52,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 04:56:52,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 04:56:52,130 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 04:56:52,145 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 04:56:52,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 04:56:52,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 04:56:52,151 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 04:56:52,151 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 04:56:52,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 04:56:52,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 04:56:52,276 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 04:56:52,278 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 04:57:03,889 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 04:57:03,950 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 04:57:03,950 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 04:57:03,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:57:03 BoogieIcfgContainer [2023-12-23 04:57:03,951 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 04:57:03,952 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 04:57:03,952 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 04:57:03,955 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 04:57:03,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 04:56:51" (1/3) ... [2023-12-23 04:57:03,955 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@557efeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:57:03, skipping insertion in model container [2023-12-23 04:57:03,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:51" (2/3) ... [2023-12-23 04:57:03,955 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@557efeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:57:03, skipping insertion in model container [2023-12-23 04:57:03,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:57:03" (3/3) ... [2023-12-23 04:57:03,956 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-5.i [2023-12-23 04:57:03,969 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 04:57:03,969 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 04:57:04,011 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 04:57:04,016 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;@1e1459f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 04:57:04,016 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 04:57:04,021 INFO L276 IsEmpty]: Start isEmpty. Operand has 264 states, 176 states have (on average 1.6420454545454546) internal successors, (289), 177 states have internal predecessors, (289), 85 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2023-12-23 04:57:04,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2023-12-23 04:57:04,043 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:57:04,044 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:57:04,044 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:57:04,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:57:04,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1325572162, now seen corresponding path program 1 times [2023-12-23 04:57:04,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:57:04,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720947202] [2023-12-23 04:57:04,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:57:04,059 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 04:57:04,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:57:04,062 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 04:57:04,085 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 04:57:05,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:57:05,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 04:57:05,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:57:05,410 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 7188 proven. 0 refuted. 0 times theorem prover too weak. 7092 trivial. 0 not checked. [2023-12-23 04:57:05,410 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:57:05,414 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:57:05,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720947202] [2023-12-23 04:57:05,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720947202] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:57:05,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 04:57:05,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 04:57:05,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282730036] [2023-12-23 04:57:05,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:57:05,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 04:57:05,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:57:05,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 04:57:05,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 04:57:05,442 INFO L87 Difference]: Start difference. First operand has 264 states, 176 states have (on average 1.6420454545454546) internal successors, (289), 177 states have internal predecessors, (289), 85 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) Second operand has 2 states, 2 states have (on average 68.5) internal successors, (137), 2 states have internal predecessors, (137), 2 states have call successors, (85), 2 states have call predecessors, (85), 2 states have return successors, (85), 2 states have call predecessors, (85), 2 states have call successors, (85) [2023-12-23 04:57:05,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:57:05,717 INFO L93 Difference]: Finished difference Result 524 states and 999 transitions. [2023-12-23 04:57:05,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 04:57:05,733 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 68.5) internal successors, (137), 2 states have internal predecessors, (137), 2 states have call successors, (85), 2 states have call predecessors, (85), 2 states have return successors, (85), 2 states have call predecessors, (85), 2 states have call successors, (85) Word has length 555 [2023-12-23 04:57:05,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:57:05,743 INFO L225 Difference]: With dead ends: 524 [2023-12-23 04:57:05,743 INFO L226 Difference]: Without dead ends: 261 [2023-12-23 04:57:05,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 554 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 04:57:05,750 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-23 04:57:05,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 444 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-23 04:57:05,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-12-23 04:57:05,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2023-12-23 04:57:05,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 174 states have (on average 1.5919540229885059) internal successors, (277), 174 states have internal predecessors, (277), 85 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2023-12-23 04:57:05,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 447 transitions. [2023-12-23 04:57:05,818 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 447 transitions. Word has length 555 [2023-12-23 04:57:05,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:57:05,819 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 447 transitions. [2023-12-23 04:57:05,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 68.5) internal successors, (137), 2 states have internal predecessors, (137), 2 states have call successors, (85), 2 states have call predecessors, (85), 2 states have return successors, (85), 2 states have call predecessors, (85), 2 states have call successors, (85) [2023-12-23 04:57:05,819 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 447 transitions. [2023-12-23 04:57:05,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2023-12-23 04:57:05,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:57:05,831 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:57:05,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-23 04:57:06,032 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 04:57:06,032 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:57:06,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:57:06,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1343880218, now seen corresponding path program 1 times [2023-12-23 04:57:06,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:57:06,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071567722] [2023-12-23 04:57:06,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:57:06,035 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 04:57:06,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:57:06,037 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 04:57:06,038 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 04:57:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:57:07,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-23 04:57:07,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:57:09,653 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 6495 proven. 351 refuted. 0 times theorem prover too weak. 7434 trivial. 0 not checked. [2023-12-23 04:57:09,653 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:57:10,467 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:57:10,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071567722] [2023-12-23 04:57:10,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071567722] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:57:10,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1749220653] [2023-12-23 04:57:10,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:57:10,468 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 04:57:10,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 04:57:10,473 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 04:57:10,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-23 04:57:11,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:57:11,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 04:57:11,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:57:12,055 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14280 trivial. 0 not checked. [2023-12-23 04:57:12,055 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:57:12,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1749220653] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:57:12,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 04:57:12,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-12-23 04:57:12,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086912066] [2023-12-23 04:57:12,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:57:12,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 04:57:12,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:57:12,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 04:57:12,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-23 04:57:12,059 INFO L87 Difference]: Start difference. First operand 261 states and 447 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-23 04:57:12,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:57:12,439 INFO L93 Difference]: Finished difference Result 689 states and 1183 transitions. [2023-12-23 04:57:12,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 04:57:12,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 555 [2023-12-23 04:57:12,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:57:12,444 INFO L225 Difference]: With dead ends: 689 [2023-12-23 04:57:12,445 INFO L226 Difference]: Without dead ends: 429 [2023-12-23 04:57:12,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1188 GetRequests, 1176 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-23 04:57:12,447 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 244 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-23 04:57:12,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 872 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-23 04:57:12,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2023-12-23 04:57:12,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 426. [2023-12-23 04:57:12,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 298 states have (on average 1.6174496644295302) internal successors, (482), 299 states have internal predecessors, (482), 125 states have call successors, (125), 2 states have call predecessors, (125), 2 states have return successors, (125), 124 states have call predecessors, (125), 125 states have call successors, (125) [2023-12-23 04:57:12,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 732 transitions. [2023-12-23 04:57:12,484 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 732 transitions. Word has length 555 [2023-12-23 04:57:12,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:57:12,486 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 732 transitions. [2023-12-23 04:57:12,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-23 04:57:12,486 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 732 transitions. [2023-12-23 04:57:12,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2023-12-23 04:57:12,489 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:57:12,490 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:57:12,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-12-23 04:57:12,729 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 04:57:12,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 04:57:12,897 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:57:12,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:57:12,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1415854110, now seen corresponding path program 1 times [2023-12-23 04:57:12,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:57:12,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1157706027] [2023-12-23 04:57:12,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:57:12,899 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 04:57:12,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:57:12,900 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 04:57:12,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-23 04:57:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:57:14,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-23 04:57:14,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:57:16,344 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 6495 proven. 351 refuted. 0 times theorem prover too weak. 7434 trivial. 0 not checked. [2023-12-23 04:57:16,344 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:57:16,951 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:57:16,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1157706027] [2023-12-23 04:57:16,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1157706027] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:57:16,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [713663124] [2023-12-23 04:57:16,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:57:16,951 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 04:57:16,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 04:57:16,953 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 04:57:16,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-23 04:57:18,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:57:18,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 04:57:18,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:57:18,516 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14280 trivial. 0 not checked. [2023-12-23 04:57:18,516 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:57:18,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [713663124] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:57:18,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 04:57:18,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-12-23 04:57:18,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692828016] [2023-12-23 04:57:18,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:57:18,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 04:57:18,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:57:18,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 04:57:18,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-23 04:57:18,521 INFO L87 Difference]: Start difference. First operand 426 states and 732 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-23 04:57:18,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:57:18,928 INFO L93 Difference]: Finished difference Result 1174 states and 2006 transitions. [2023-12-23 04:57:18,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 04:57:18,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 555 [2023-12-23 04:57:18,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:57:18,937 INFO L225 Difference]: With dead ends: 1174 [2023-12-23 04:57:18,937 INFO L226 Difference]: Without dead ends: 749 [2023-12-23 04:57:18,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1188 GetRequests, 1176 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-23 04:57:18,940 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 272 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-23 04:57:18,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 867 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-23 04:57:18,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2023-12-23 04:57:19,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 746. [2023-12-23 04:57:19,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 511 states have (on average 1.5753424657534247) internal successors, (805), 514 states have internal predecessors, (805), 230 states have call successors, (230), 4 states have call predecessors, (230), 4 states have return successors, (230), 227 states have call predecessors, (230), 230 states have call successors, (230) [2023-12-23 04:57:19,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1265 transitions. [2023-12-23 04:57:19,030 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1265 transitions. Word has length 555 [2023-12-23 04:57:19,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:57:19,034 INFO L495 AbstractCegarLoop]: Abstraction has 746 states and 1265 transitions. [2023-12-23 04:57:19,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-23 04:57:19,035 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1265 transitions. [2023-12-23 04:57:19,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2023-12-23 04:57:19,039 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:57:19,039 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:57:19,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-23 04:57:19,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2023-12-23 04:57:19,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 04:57:19,445 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:57:19,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:57:19,445 INFO L85 PathProgramCache]: Analyzing trace with hash -993152284, now seen corresponding path program 1 times [2023-12-23 04:57:19,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:57:19,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [671283199] [2023-12-23 04:57:19,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:57:19,446 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 04:57:19,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:57:19,447 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 04:57:19,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-23 04:57:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:57:20,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-23 04:57:20,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:57:22,446 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 6495 proven. 351 refuted. 0 times theorem prover too weak. 7434 trivial. 0 not checked. [2023-12-23 04:57:22,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:57:23,039 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:57:23,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [671283199] [2023-12-23 04:57:23,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [671283199] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:57:23,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [706661430] [2023-12-23 04:57:23,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:57:23,040 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 04:57:23,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 04:57:23,041 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 04:57:23,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-23 04:57:24,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:57:24,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 04:57:24,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:57:24,614 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14280 trivial. 0 not checked. [2023-12-23 04:57:24,615 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:57:24,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [706661430] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:57:24,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 04:57:24,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-12-23 04:57:24,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548684916] [2023-12-23 04:57:24,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:57:24,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 04:57:24,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:57:24,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 04:57:24,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-23 04:57:24,617 INFO L87 Difference]: Start difference. First operand 746 states and 1265 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-23 04:57:25,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:57:25,033 INFO L93 Difference]: Finished difference Result 2075 states and 3523 transitions. [2023-12-23 04:57:25,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 04:57:25,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 555 [2023-12-23 04:57:25,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:57:25,039 INFO L225 Difference]: With dead ends: 2075 [2023-12-23 04:57:25,039 INFO L226 Difference]: Without dead ends: 1330 [2023-12-23 04:57:25,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1188 GetRequests, 1176 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-23 04:57:25,046 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 253 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-23 04:57:25,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 1034 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-23 04:57:25,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2023-12-23 04:57:25,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1324. [2023-12-23 04:57:25,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1324 states, 945 states have (on average 1.5936507936507935) internal successors, (1506), 952 states have internal predecessors, (1506), 370 states have call successors, (370), 8 states have call predecessors, (370), 8 states have return successors, (370), 363 states have call predecessors, (370), 370 states have call successors, (370) [2023-12-23 04:57:25,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 2246 transitions. [2023-12-23 04:57:25,098 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 2246 transitions. Word has length 555 [2023-12-23 04:57:25,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:57:25,099 INFO L495 AbstractCegarLoop]: Abstraction has 1324 states and 2246 transitions. [2023-12-23 04:57:25,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-23 04:57:25,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 2246 transitions. [2023-12-23 04:57:25,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2023-12-23 04:57:25,104 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:57:25,104 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:57:25,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-23 04:57:25,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-12-23 04:57:25,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 04:57:25,516 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:57:25,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:57:25,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1612871270, now seen corresponding path program 1 times [2023-12-23 04:57:25,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:57:25,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [335181051] [2023-12-23 04:57:25,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:57:25,518 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 04:57:25,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:57:25,519 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 04:57:25,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-23 04:57:26,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:57:26,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 914 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-23 04:57:26,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:57:28,568 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 6495 proven. 351 refuted. 0 times theorem prover too weak. 7434 trivial. 0 not checked. [2023-12-23 04:57:28,569 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:57:29,052 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:57:29,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [335181051] [2023-12-23 04:57:29,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [335181051] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:57:29,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [596098088] [2023-12-23 04:57:29,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:57:29,053 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 04:57:29,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 04:57:29,054 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 04:57:29,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-23 04:57:30,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:57:30,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 914 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 04:57:30,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:57:30,663 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14280 trivial. 0 not checked. [2023-12-23 04:57:30,663 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:57:30,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [596098088] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:57:30,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 04:57:30,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-12-23 04:57:30,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908750173] [2023-12-23 04:57:30,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:57:30,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 04:57:30,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:57:30,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 04:57:30,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-23 04:57:30,665 INFO L87 Difference]: Start difference. First operand 1324 states and 2246 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-23 04:57:30,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:57:30,864 INFO L93 Difference]: Finished difference Result 3930 states and 6664 transitions. [2023-12-23 04:57:30,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 04:57:30,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 555 [2023-12-23 04:57:30,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:57:30,876 INFO L225 Difference]: With dead ends: 3930 [2023-12-23 04:57:30,876 INFO L226 Difference]: Without dead ends: 2607 [2023-12-23 04:57:30,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1188 GetRequests, 1176 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-23 04:57:30,881 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 430 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-23 04:57:30,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 882 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-23 04:57:30,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2607 states. [2023-12-23 04:57:30,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2607 to 1364. [2023-12-23 04:57:30,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 985 states have (on average 1.5776649746192895) internal successors, (1554), 992 states have internal predecessors, (1554), 370 states have call successors, (370), 8 states have call predecessors, (370), 8 states have return successors, (370), 363 states have call predecessors, (370), 370 states have call successors, (370) [2023-12-23 04:57:30,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 2294 transitions. [2023-12-23 04:57:30,986 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 2294 transitions. Word has length 555 [2023-12-23 04:57:30,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:57:30,987 INFO L495 AbstractCegarLoop]: Abstraction has 1364 states and 2294 transitions. [2023-12-23 04:57:30,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-23 04:57:30,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 2294 transitions. [2023-12-23 04:57:30,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2023-12-23 04:57:30,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:57:30,991 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:57:31,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-23 04:57:31,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2023-12-23 04:57:31,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 04:57:31,400 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:57:31,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:57:31,401 INFO L85 PathProgramCache]: Analyzing trace with hash -381273436, now seen corresponding path program 1 times [2023-12-23 04:57:31,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:57:31,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540128307] [2023-12-23 04:57:31,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:57:31,402 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 04:57:31,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:57:31,403 INFO L229 MonitoredProcess]: Starting monitored process 11 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 04:57:31,406 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 (11)] Waiting until timeout for monitored process [2023-12-23 04:57:32,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:57:32,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 913 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-23 04:57:32,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:57:34,191 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 6495 proven. 351 refuted. 0 times theorem prover too weak. 7434 trivial. 0 not checked. [2023-12-23 04:57:34,191 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:57:34,661 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:57:34,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540128307] [2023-12-23 04:57:34,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540128307] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:57:34,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [553703748] [2023-12-23 04:57:34,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:57:34,661 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 04:57:34,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 04:57:34,662 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 04:57:34,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-12-23 04:57:36,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:57:36,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 913 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 04:57:36,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:57:36,236 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14280 trivial. 0 not checked. [2023-12-23 04:57:36,236 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:57:36,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [553703748] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:57:36,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 04:57:36,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-12-23 04:57:36,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230155966] [2023-12-23 04:57:36,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:57:36,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 04:57:36,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:57:36,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 04:57:36,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-23 04:57:36,238 INFO L87 Difference]: Start difference. First operand 1364 states and 2294 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-23 04:57:36,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:57:36,582 INFO L93 Difference]: Finished difference Result 4050 states and 6802 transitions. [2023-12-23 04:57:36,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 04:57:36,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 555 [2023-12-23 04:57:36,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:57:36,594 INFO L225 Difference]: With dead ends: 4050 [2023-12-23 04:57:36,594 INFO L226 Difference]: Without dead ends: 2687 [2023-12-23 04:57:36,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1188 GetRequests, 1176 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-23 04:57:36,599 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 421 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-23 04:57:36,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 1003 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-23 04:57:36,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2687 states. [2023-12-23 04:57:36,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2687 to 1900. [2023-12-23 04:57:36,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1900 states, 1521 states have (on average 1.6370808678500985) internal successors, (2490), 1528 states have internal predecessors, (2490), 370 states have call successors, (370), 8 states have call predecessors, (370), 8 states have return successors, (370), 363 states have call predecessors, (370), 370 states have call successors, (370) [2023-12-23 04:57:36,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1900 states to 1900 states and 3230 transitions. [2023-12-23 04:57:36,737 INFO L78 Accepts]: Start accepts. Automaton has 1900 states and 3230 transitions. Word has length 555 [2023-12-23 04:57:36,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:57:36,738 INFO L495 AbstractCegarLoop]: Abstraction has 1900 states and 3230 transitions. [2023-12-23 04:57:36,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-23 04:57:36,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1900 states and 3230 transitions. [2023-12-23 04:57:36,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2023-12-23 04:57:36,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:57:36,744 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:57:36,811 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 (11)] Forceful destruction successful, exit code 0 [2023-12-23 04:57:36,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2023-12-23 04:57:37,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 04:57:37,168 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:57:37,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:57:37,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1392390686, now seen corresponding path program 1 times [2023-12-23 04:57:37,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:57:37,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [427256765] [2023-12-23 04:57:37,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:57:37,170 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 04:57:37,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:57:37,174 INFO L229 MonitoredProcess]: Starting monitored process 13 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 04:57:37,210 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 (13)] Waiting until timeout for monitored process [2023-12-23 04:57:38,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:57:38,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-23 04:57:38,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:57:40,594 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 6495 proven. 351 refuted. 0 times theorem prover too weak. 7434 trivial. 0 not checked. [2023-12-23 04:57:40,594 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:57:41,130 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:57:41,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [427256765] [2023-12-23 04:57:41,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [427256765] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:57:41,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1699572183] [2023-12-23 04:57:41,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:57:41,130 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 04:57:41,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 04:57:41,131 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 04:57:41,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-12-23 04:57:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:57:42,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 04:57:42,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:57:43,094 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14280 trivial. 0 not checked. [2023-12-23 04:57:43,094 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:57:43,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1699572183] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:57:43,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 04:57:43,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-23 04:57:43,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031428161] [2023-12-23 04:57:43,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:57:43,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 04:57:43,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:57:43,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 04:57:43,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-12-23 04:57:43,096 INFO L87 Difference]: Start difference. First operand 1900 states and 3230 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-23 04:57:45,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 04:57:47,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 04:57:49,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 04:57:52,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:57:52,872 INFO L93 Difference]: Finished difference Result 9048 states and 15282 transitions. [2023-12-23 04:57:52,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 04:57:52,874 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 555 [2023-12-23 04:57:52,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:57:52,916 INFO L225 Difference]: With dead ends: 9048 [2023-12-23 04:57:52,917 INFO L226 Difference]: Without dead ends: 7149 [2023-12-23 04:57:52,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1195 GetRequests, 1177 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2023-12-23 04:57:52,922 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 1556 mSDsluCounter, 1605 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 645 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 645 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2023-12-23 04:57:52,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1556 Valid, 2085 Invalid, 1183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [645 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2023-12-23 04:57:52,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7149 states. [2023-12-23 04:57:53,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7149 to 6766. [2023-12-23 04:57:53,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6766 states, 5249 states have (on average 1.590017146123071) internal successors, (8346), 5278 states have internal predecessors, (8346), 1480 states have call successors, (1480), 36 states have call predecessors, (1480), 36 states have return successors, (1480), 1451 states have call predecessors, (1480), 1480 states have call successors, (1480) [2023-12-23 04:57:53,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6766 states to 6766 states and 11306 transitions. [2023-12-23 04:57:53,319 INFO L78 Accepts]: Start accepts. Automaton has 6766 states and 11306 transitions. Word has length 555 [2023-12-23 04:57:53,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:57:53,320 INFO L495 AbstractCegarLoop]: Abstraction has 6766 states and 11306 transitions. [2023-12-23 04:57:53,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-23 04:57:53,320 INFO L276 IsEmpty]: Start isEmpty. Operand 6766 states and 11306 transitions. [2023-12-23 04:57:53,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2023-12-23 04:57:53,329 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:57:53,329 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:57:53,356 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2023-12-23 04:57:53,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-23 04:57:53,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,13 /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 04:57:53,739 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:57:53,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:57:53,739 INFO L85 PathProgramCache]: Analyzing trace with hash 530837348, now seen corresponding path program 1 times [2023-12-23 04:57:53,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:57:53,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [969757014] [2023-12-23 04:57:53,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:57:53,740 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 04:57:53,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:57:53,742 INFO L229 MonitoredProcess]: Starting monitored process 15 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 04:57:53,743 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 (15)] Waiting until timeout for monitored process [2023-12-23 04:57:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:57:54,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 911 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-23 04:57:54,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:57:56,430 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 6495 proven. 351 refuted. 0 times theorem prover too weak. 7434 trivial. 0 not checked. [2023-12-23 04:57:56,431 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:57:56,894 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:57:56,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [969757014] [2023-12-23 04:57:56,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [969757014] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:57:56,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [219704270] [2023-12-23 04:57:56,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:57:56,895 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 04:57:56,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 04:57:56,896 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 04:57:56,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2023-12-23 04:57:58,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:57:58,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 911 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 04:57:58,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:57:59,222 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14280 trivial. 0 not checked. [2023-12-23 04:57:59,223 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:57:59,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [219704270] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:57:59,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 04:57:59,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-23 04:57:59,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464790710] [2023-12-23 04:57:59,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:57:59,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 04:57:59,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:57:59,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 04:57:59,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-23 04:57:59,225 INFO L87 Difference]: Start difference. First operand 6766 states and 11306 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-23 04:58:03,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.61s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 04:58:05,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.76s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 04:58:07,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 04:58:08,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 04:58:13,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 04:58:15,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 04:58:17,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 04:58:19,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:58:19,637 INFO L93 Difference]: Finished difference Result 26639 states and 44036 transitions. [2023-12-23 04:58:19,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-23 04:58:19,638 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 555 [2023-12-23 04:58:19,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:58:19,695 INFO L225 Difference]: With dead ends: 26639 [2023-12-23 04:58:19,695 INFO L226 Difference]: Without dead ends: 19874 [2023-12-23 04:58:19,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1192 GetRequests, 1176 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2023-12-23 04:58:19,712 INFO L413 NwaCegarLoop]: 673 mSDtfsCounter, 1228 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1228 SdHoareTripleChecker+Valid, 2224 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.6s IncrementalHoareTripleChecker+Time [2023-12-23 04:58:19,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1228 Valid, 2224 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 19.6s Time] [2023-12-23 04:58:19,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19874 states. [2023-12-23 04:58:20,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19874 to 10517. [2023-12-23 04:58:20,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10517 states, 8396 states have (on average 1.6036207717960933) internal successors, (13464), 8442 states have internal predecessors, (13464), 2066 states have call successors, (2066), 54 states have call predecessors, (2066), 54 states have return successors, (2066), 2020 states have call predecessors, (2066), 2066 states have call successors, (2066) [2023-12-23 04:58:20,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10517 states to 10517 states and 17596 transitions. [2023-12-23 04:58:20,430 INFO L78 Accepts]: Start accepts. Automaton has 10517 states and 17596 transitions. Word has length 555 [2023-12-23 04:58:20,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:58:20,431 INFO L495 AbstractCegarLoop]: Abstraction has 10517 states and 17596 transitions. [2023-12-23 04:58:20,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-23 04:58:20,444 INFO L276 IsEmpty]: Start isEmpty. Operand 10517 states and 17596 transitions. [2023-12-23 04:58:20,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2023-12-23 04:58:20,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:58:20,458 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:58:20,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2023-12-23 04:58:20,714 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 (15)] Forceful destruction successful, exit code 0 [2023-12-23 04:58:20,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,15 /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 04:58:20,875 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:58:20,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:58:20,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1057510554, now seen corresponding path program 1 times [2023-12-23 04:58:20,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:58:20,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [788232558] [2023-12-23 04:58:20,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:58:20,877 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 04:58:20,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:58:20,878 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 04:58:20,883 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 04:58:22,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:58:22,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 911 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-23 04:58:22,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:58:23,567 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 6495 proven. 351 refuted. 0 times theorem prover too weak. 7434 trivial. 0 not checked. [2023-12-23 04:58:23,567 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:58:24,113 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:58:24,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [788232558] [2023-12-23 04:58:24,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [788232558] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:58:24,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1083582051] [2023-12-23 04:58:24,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:58:24,114 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 04:58:24,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 04:58:24,115 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 04:58:24,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2023-12-23 04:58:27,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:58:27,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 911 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 04:58:27,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:58:31,886 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14280 trivial. 0 not checked. [2023-12-23 04:58:31,887 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:58:31,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1083582051] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:58:31,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 04:58:31,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [10] total 11 [2023-12-23 04:58:31,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982060239] [2023-12-23 04:58:31,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:58:31,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 04:58:31,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:58:31,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 04:58:31,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-23 04:58:31,889 INFO L87 Difference]: Start difference. First operand 10517 states and 17596 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-23 04:58:32,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:58:32,696 INFO L93 Difference]: Finished difference Result 25589 states and 42712 transitions. [2023-12-23 04:58:32,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 04:58:32,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 555 [2023-12-23 04:58:32,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:58:32,732 INFO L225 Difference]: With dead ends: 25589 [2023-12-23 04:58:32,732 INFO L226 Difference]: Without dead ends: 15073 [2023-12-23 04:58:32,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1188 GetRequests, 1176 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-23 04:58:32,749 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 198 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-23 04:58:32,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 856 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-23 04:58:32,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15073 states. [2023-12-23 04:58:33,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15073 to 15071. [2023-12-23 04:58:33,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15071 states, 11970 states have (on average 1.5943191311612364) internal successors, (19084), 12034 states have internal predecessors, (19084), 3012 states have call successors, (3012), 88 states have call predecessors, (3012), 88 states have return successors, (3012), 2948 states have call predecessors, (3012), 3012 states have call successors, (3012) [2023-12-23 04:58:33,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15071 states to 15071 states and 25108 transitions. [2023-12-23 04:58:33,533 INFO L78 Accepts]: Start accepts. Automaton has 15071 states and 25108 transitions. Word has length 555 [2023-12-23 04:58:33,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:58:33,534 INFO L495 AbstractCegarLoop]: Abstraction has 15071 states and 25108 transitions. [2023-12-23 04:58:33,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-23 04:58:33,534 INFO L276 IsEmpty]: Start isEmpty. Operand 15071 states and 25108 transitions. [2023-12-23 04:58:33,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2023-12-23 04:58:33,553 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:58:33,554 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:58:33,593 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 (17)] Forceful destruction successful, exit code 0 [2023-12-23 04:58:33,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2023-12-23 04:58:33,960 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=3,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 04:58:33,961 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:58:33,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:58:33,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1855074018, now seen corresponding path program 1 times [2023-12-23 04:58:33,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:58:33,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540281577] [2023-12-23 04:58:33,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:58:33,962 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 04:58:33,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:58:33,964 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 04:58:33,992 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 04:58:35,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:58:35,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-23 04:58:35,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:58:37,085 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 6495 proven. 351 refuted. 0 times theorem prover too weak. 7434 trivial. 0 not checked. [2023-12-23 04:58:37,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:58:37,608 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:58:37,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540281577] [2023-12-23 04:58:37,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540281577] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:58:37,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [654907146] [2023-12-23 04:58:37,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:58:37,609 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 04:58:37,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 04:58:37,610 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 04:58:37,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2023-12-23 04:58:41,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:58:41,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 04:58:41,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:58:42,280 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14280 trivial. 0 not checked. [2023-12-23 04:58:42,281 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:58:42,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [654907146] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:58:42,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 04:58:42,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 12 [2023-12-23 04:58:42,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037125007] [2023-12-23 04:58:42,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:58:42,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 04:58:42,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:58:42,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 04:58:42,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-12-23 04:58:42,283 INFO L87 Difference]: Start difference. First operand 15071 states and 25108 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-23 04:58:44,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:58:44,547 INFO L93 Difference]: Finished difference Result 52825 states and 88028 transitions. [2023-12-23 04:58:44,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-23 04:58:44,548 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 555 [2023-12-23 04:58:44,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:58:44,646 INFO L225 Difference]: With dead ends: 52825 [2023-12-23 04:58:44,647 INFO L226 Difference]: Without dead ends: 39506 [2023-12-23 04:58:44,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1189 GetRequests, 1175 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-12-23 04:58:44,676 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 920 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 2153 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-23 04:58:44,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 2153 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-23 04:58:44,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39506 states. [2023-12-23 04:58:46,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39506 to 39494. [2023-12-23 04:58:46,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39494 states, 31283 states have (on average 1.5897452290381358) internal successors, (49732), 31448 states have internal predecessors, (49732), 7966 states have call successors, (7966), 244 states have call predecessors, (7966), 244 states have return successors, (7966), 7801 states have call predecessors, (7966), 7966 states have call successors, (7966) [2023-12-23 04:58:46,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39494 states to 39494 states and 65664 transitions. [2023-12-23 04:58:46,924 INFO L78 Accepts]: Start accepts. Automaton has 39494 states and 65664 transitions. Word has length 555 [2023-12-23 04:58:46,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:58:46,925 INFO L495 AbstractCegarLoop]: Abstraction has 39494 states and 65664 transitions. [2023-12-23 04:58:46,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-23 04:58:46,925 INFO L276 IsEmpty]: Start isEmpty. Operand 39494 states and 65664 transitions. [2023-12-23 04:58:46,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2023-12-23 04:58:46,951 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:58:46,953 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:58:46,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2023-12-23 04:58:47,220 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 (19)] Forceful destruction successful, exit code 0 [2023-12-23 04:58:47,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,19 /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 04:58:47,380 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:58:47,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:58:47,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1760621024, now seen corresponding path program 1 times [2023-12-23 04:58:47,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:58:47,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [899911133] [2023-12-23 04:58:47,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:58:47,382 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 04:58:47,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:58:47,383 INFO L229 MonitoredProcess]: Starting monitored process 21 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 04:58:47,384 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 (21)] Waiting until timeout for monitored process [2023-12-23 04:58:48,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:58:48,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 911 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-23 04:58:48,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:58:50,089 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 6495 proven. 351 refuted. 0 times theorem prover too weak. 7434 trivial. 0 not checked. [2023-12-23 04:58:50,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:58:50,595 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:58:50,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [899911133] [2023-12-23 04:58:50,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [899911133] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:58:50,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1729562022] [2023-12-23 04:58:50,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:58:50,596 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 04:58:50,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 04:58:50,597 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 04:58:50,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2023-12-23 04:58:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:58:55,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 911 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 04:58:55,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:58:56,674 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14280 trivial. 0 not checked. [2023-12-23 04:58:56,674 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:58:56,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1729562022] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:58:56,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 04:58:56,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2023-12-23 04:58:56,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008125316] [2023-12-23 04:58:56,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:58:56,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-23 04:58:56,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:58:56,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-23 04:58:56,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-12-23 04:58:56,677 INFO L87 Difference]: Start difference. First operand 39494 states and 65664 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-23 04:59:08,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:59:08,669 INFO L93 Difference]: Finished difference Result 160559 states and 264377 transitions. [2023-12-23 04:59:08,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-23 04:59:08,672 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 555 [2023-12-23 04:59:08,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:59:09,219 INFO L225 Difference]: With dead ends: 160559 [2023-12-23 04:59:09,219 INFO L226 Difference]: Without dead ends: 119834 [2023-12-23 04:59:09,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1196 GetRequests, 1177 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2023-12-23 04:59:09,300 INFO L413 NwaCegarLoop]: 856 mSDtfsCounter, 1547 mSDsluCounter, 1812 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 948 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 2668 SdHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 948 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-23 04:59:09,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1547 Valid, 2668 Invalid, 1642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [948 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-23 04:59:09,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119834 states. [2023-12-23 04:59:14,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119834 to 84142. [2023-12-23 04:59:14,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84142 states, 68066 states have (on average 1.6007698410366409) internal successors, (108958), 68408 states have internal predecessors, (108958), 15463 states have call successors, (15463), 612 states have call predecessors, (15463), 612 states have return successors, (15463), 15121 states have call predecessors, (15463), 15463 states have call successors, (15463) [2023-12-23 04:59:15,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84142 states to 84142 states and 139884 transitions. [2023-12-23 04:59:15,158 INFO L78 Accepts]: Start accepts. Automaton has 84142 states and 139884 transitions. Word has length 555 [2023-12-23 04:59:15,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:59:15,159 INFO L495 AbstractCegarLoop]: Abstraction has 84142 states and 139884 transitions. [2023-12-23 04:59:15,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-23 04:59:15,159 INFO L276 IsEmpty]: Start isEmpty. Operand 84142 states and 139884 transitions. [2023-12-23 04:59:15,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2023-12-23 04:59:15,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:59:15,215 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:59:15,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2023-12-23 04:59:15,468 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 (21)] Forceful destruction successful, exit code 0 [2023-12-23 04:59:15,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,21 /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 04:59:15,629 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:59:15,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:59:15,630 INFO L85 PathProgramCache]: Analyzing trace with hash 271564580, now seen corresponding path program 1 times [2023-12-23 04:59:15,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:59:15,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1137897175] [2023-12-23 04:59:15,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:59:15,631 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 04:59:15,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:59:15,632 INFO L229 MonitoredProcess]: Starting monitored process 23 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 04:59:15,634 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 (23)] Waiting until timeout for monitored process [2023-12-23 04:59:16,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:59:16,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-23 04:59:16,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:59:18,927 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 6495 proven. 351 refuted. 0 times theorem prover too weak. 7434 trivial. 0 not checked. [2023-12-23 04:59:18,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:59:19,554 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:59:19,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1137897175] [2023-12-23 04:59:19,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1137897175] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:59:19,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1825554973] [2023-12-23 04:59:19,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:59:19,555 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 04:59:19,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 04:59:19,556 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 04:59:19,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2023-12-23 04:59:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:59:24,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-23 04:59:24,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:59:26,361 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 5502 proven. 63 refuted. 0 times theorem prover too weak. 8715 trivial. 0 not checked. [2023-12-23 04:59:26,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:59:26,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1825554973] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:59:26,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 04:59:26,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 15 [2023-12-23 04:59:26,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241135185] [2023-12-23 04:59:26,906 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 04:59:26,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-23 04:59:26,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:59:26,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-23 04:59:26,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2023-12-23 04:59:26,908 INFO L87 Difference]: Start difference. First operand 84142 states and 139884 transitions. Second operand has 15 states, 15 states have (on average 16.066666666666666) internal successors, (241), 15 states have internal predecessors, (241), 5 states have call successors, (170), 5 states have call predecessors, (170), 8 states have return successors, (170), 5 states have call predecessors, (170), 5 states have call successors, (170) [2023-12-23 04:59:38,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 04:59:40,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 04:59:41,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 04:59:43,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 04:59:45,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 04:59:48,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 04:59:50,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 04:59:51,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 04:59:53,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 04:59:58,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:00:22,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:00:22,288 INFO L93 Difference]: Finished difference Result 323909 states and 529028 transitions. [2023-12-23 05:00:22,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-12-23 05:00:22,289 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 16.066666666666666) internal successors, (241), 15 states have internal predecessors, (241), 5 states have call successors, (170), 5 states have call predecessors, (170), 8 states have return successors, (170), 5 states have call predecessors, (170), 5 states have call successors, (170) Word has length 555 [2023-12-23 05:00:22,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:00:23,159 INFO L225 Difference]: With dead ends: 323909 [2023-12-23 05:00:23,159 INFO L226 Difference]: Without dead ends: 239826 [2023-12-23 05:00:23,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1346 GetRequests, 1261 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2559 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1457, Invalid=6025, Unknown=0, NotChecked=0, Total=7482 [2023-12-23 05:00:23,462 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 3334 mSDsluCounter, 3980 mSDsCounter, 0 mSdLazyCounter, 4322 mSolverCounterSat, 894 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3360 SdHoareTripleChecker+Valid, 4565 SdHoareTripleChecker+Invalid, 5216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 894 IncrementalHoareTripleChecker+Valid, 4322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.0s IncrementalHoareTripleChecker+Time [2023-12-23 05:00:23,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3360 Valid, 4565 Invalid, 5216 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [894 Valid, 4322 Invalid, 0 Unknown, 0 Unchecked, 39.0s Time] [2023-12-23 05:00:23,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239826 states. [2023-12-23 05:00:32,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239826 to 119537. [2023-12-23 05:00:33,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119537 states, 98580 states have (on average 1.5671535808480421) internal successors, (154490), 99119 states have internal predecessors, (154490), 19341 states have call successors, (19341), 1615 states have call predecessors, (19341), 1615 states have return successors, (19341), 18802 states have call predecessors, (19341), 19341 states have call successors, (19341) [2023-12-23 05:00:33,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119537 states to 119537 states and 193172 transitions. [2023-12-23 05:00:33,699 INFO L78 Accepts]: Start accepts. Automaton has 119537 states and 193172 transitions. Word has length 555 [2023-12-23 05:00:33,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:00:33,700 INFO L495 AbstractCegarLoop]: Abstraction has 119537 states and 193172 transitions. [2023-12-23 05:00:33,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 16.066666666666666) internal successors, (241), 15 states have internal predecessors, (241), 5 states have call successors, (170), 5 states have call predecessors, (170), 8 states have return successors, (170), 5 states have call predecessors, (170), 5 states have call successors, (170) [2023-12-23 05:00:33,700 INFO L276 IsEmpty]: Start isEmpty. Operand 119537 states and 193172 transitions. [2023-12-23 05:00:34,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2023-12-23 05:00:34,052 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:00:34,052 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:00:34,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2023-12-23 05:00:34,313 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 (23)] Forceful destruction successful, exit code 0 [2023-12-23 05:00:34,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,23 /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 05:00:34,475 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:00:34,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:00:34,475 INFO L85 PathProgramCache]: Analyzing trace with hash 130634528, now seen corresponding path program 1 times [2023-12-23 05:00:34,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:00:34,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1041720758] [2023-12-23 05:00:34,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:00:34,477 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 05:00:34,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:00:34,479 INFO L229 MonitoredProcess]: Starting monitored process 25 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 05:00:34,483 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 (25)] Waiting until timeout for monitored process [2023-12-23 05:00:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:00:36,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 05:00:36,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:00:41,118 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14280 trivial. 0 not checked. [2023-12-23 05:00:41,118 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:00:41,118 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:00:41,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1041720758] [2023-12-23 05:00:41,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1041720758] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:00:41,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 05:00:41,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 05:00:41,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866636230] [2023-12-23 05:00:41,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:00:41,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 05:00:41,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:00:41,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 05:00:41,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 05:00:41,120 INFO L87 Difference]: Start difference. First operand 119537 states and 193172 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-23 05:00:54,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:00:54,505 INFO L93 Difference]: Finished difference Result 316973 states and 512764 transitions. [2023-12-23 05:00:54,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 05:00:54,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 555 [2023-12-23 05:00:54,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:00:55,236 INFO L225 Difference]: With dead ends: 316973 [2023-12-23 05:00:55,236 INFO L226 Difference]: Without dead ends: 197507 [2023-12-23 05:00:55,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 553 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 05:00:55,493 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 183 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-23 05:00:55,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 960 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-23 05:00:55,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197507 states. [2023-12-23 05:01:09,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197507 to 197505. [2023-12-23 05:01:09,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197505 states, 163164 states have (on average 1.5646956436468828) internal successors, (255302), 164051 states have internal predecessors, (255302), 31709 states have call successors, (31709), 2631 states have call predecessors, (31709), 2631 states have return successors, (31709), 30822 states have call predecessors, (31709), 31709 states have call successors, (31709) [2023-12-23 05:01:10,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197505 states to 197505 states and 318720 transitions. [2023-12-23 05:01:10,348 INFO L78 Accepts]: Start accepts. Automaton has 197505 states and 318720 transitions. Word has length 555 [2023-12-23 05:01:10,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:01:10,349 INFO L495 AbstractCegarLoop]: Abstraction has 197505 states and 318720 transitions. [2023-12-23 05:01:10,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-23 05:01:10,349 INFO L276 IsEmpty]: Start isEmpty. Operand 197505 states and 318720 transitions. [2023-12-23 05:01:10,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2023-12-23 05:01:10,596 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:01:10,596 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:10,652 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 (25)] Forceful destruction successful, exit code 0 [2023-12-23 05:01:10,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /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 05:01:10,809 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:01:10,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:01:10,809 INFO L85 PathProgramCache]: Analyzing trace with hash 357764485, now seen corresponding path program 1 times [2023-12-23 05:01:10,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:01:10,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [485533551] [2023-12-23 05:01:10,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:01:10,811 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 05:01:10,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:01:10,812 INFO L229 MonitoredProcess]: Starting monitored process 26 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 05:01:10,826 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 (26)] Waiting until timeout for monitored process [2023-12-23 05:01:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:01:12,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 914 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-23 05:01:12,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:01:13,885 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 7268 proven. 207 refuted. 0 times theorem prover too weak. 6805 trivial. 0 not checked. [2023-12-23 05:01:13,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:01:14,999 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 291 proven. 210 refuted. 0 times theorem prover too weak. 13779 trivial. 0 not checked. [2023-12-23 05:01:14,999 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:01:14,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [485533551] [2023-12-23 05:01:14,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [485533551] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 05:01:15,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 05:01:15,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-12-23 05:01:15,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172362590] [2023-12-23 05:01:15,000 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 05:01:15,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-23 05:01:15,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:01:15,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-23 05:01:15,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-12-23 05:01:15,002 INFO L87 Difference]: Start difference. First operand 197505 states and 318720 transitions. Second operand has 14 states, 14 states have (on average 12.071428571428571) internal successors, (169), 14 states have internal predecessors, (169), 3 states have call successors, (121), 3 states have call predecessors, (121), 7 states have return successors, (122), 3 states have call predecessors, (122), 3 states have call successors, (122) [2023-12-23 05:01:21,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.75s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:01:26,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:01:28,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:01:29,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:01:32,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []