/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-96.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 05:39:39,537 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 05:39:39,598 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-23 05:39:39,602 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 05:39:39,602 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 05:39:39,635 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 05:39:39,639 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 05:39:39,640 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 05:39:39,641 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 05:39:39,644 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 05:39:39,644 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 05:39:39,645 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 05:39:39,646 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 05:39:39,647 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 05:39:39,647 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 05:39:39,648 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 05:39:39,648 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 05:39:39,648 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 05:39:39,648 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 05:39:39,649 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 05:39:39,649 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 05:39:39,649 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 05:39:39,650 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 05:39:39,650 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 05:39:39,650 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 05:39:39,650 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 05:39:39,650 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 05:39:39,651 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 05:39:39,651 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 05:39:39,651 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 05:39:39,652 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 05:39:39,652 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 05:39:39,652 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 05:39:39,653 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 05:39:39,653 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 05:39:39,653 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 05:39:39,653 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 05:39:39,653 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 05:39:39,653 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 05:39:39,653 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 05:39:39,654 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 05:39:39,654 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 05:39:39,654 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 05:39:39,654 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 05:39:39,654 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 05:39:39,655 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 05:39:39,655 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 05:39:39,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 05:39:39,911 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 05:39:39,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 05:39:39,914 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 05:39:39,915 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 05:39:39,917 INFO L431 ainManager$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-96.i [2023-12-23 05:39:41,086 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 05:39:41,305 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 05:39:41,306 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-96.i [2023-12-23 05:39:41,325 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab5706927/1c2819e8270d44ab9ff4e006bb1cfdfc/FLAGe31069ae2 [2023-12-23 05:39:41,340 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab5706927/1c2819e8270d44ab9ff4e006bb1cfdfc [2023-12-23 05:39:41,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 05:39:41,343 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 05:39:41,344 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 05:39:41,344 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 05:39:41,355 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 05:39:41,356 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:39:41" (1/1) ... [2023-12-23 05:39:41,356 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c0a30d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:39:41, skipping insertion in model container [2023-12-23 05:39:41,356 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:39:41" (1/1) ... [2023-12-23 05:39:41,401 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 05:39:41,513 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-96.i[916,929] [2023-12-23 05:39:41,662 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 05:39:41,678 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 05:39:41,687 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-96.i[916,929] [2023-12-23 05:39:41,755 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 05:39:41,801 INFO L206 MainTranslator]: Completed translation [2023-12-23 05:39:41,802 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:39:41 WrapperNode [2023-12-23 05:39:41,802 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 05:39:41,803 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 05:39:41,803 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 05:39:41,803 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 05:39:41,820 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:39:41" (1/1) ... [2023-12-23 05:39:41,841 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:39:41" (1/1) ... [2023-12-23 05:39:41,888 INFO L138 Inliner]: procedures = 27, calls = 132, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 714 [2023-12-23 05:39:41,888 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 05:39:41,889 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 05:39:41,889 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 05:39:41,889 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 05:39:41,900 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:39:41" (1/1) ... [2023-12-23 05:39:41,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:39:41" (1/1) ... [2023-12-23 05:39:41,908 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:39:41" (1/1) ... [2023-12-23 05:39:41,955 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-23 05:39:41,955 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:39:41" (1/1) ... [2023-12-23 05:39:41,956 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:39:41" (1/1) ... [2023-12-23 05:39:41,986 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:39:41" (1/1) ... [2023-12-23 05:39:41,991 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:39:41" (1/1) ... [2023-12-23 05:39:42,006 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:39:41" (1/1) ... [2023-12-23 05:39:42,009 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:39:41" (1/1) ... [2023-12-23 05:39:42,014 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 05:39:42,015 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 05:39:42,015 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 05:39:42,015 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 05:39:42,023 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:39:41" (1/1) ... [2023-12-23 05:39:42,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 05:39:42,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 05:39:42,072 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-23 05:39:42,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 05:39:42,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 05:39:42,115 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 05:39:42,115 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 05:39:42,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 05:39:42,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 05:39:42,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-23 05:39:42,250 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 05:39:42,252 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 05:40:05,000 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 05:40:05,094 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 05:40:05,094 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 05:40:05,094 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:40:05 BoogieIcfgContainer [2023-12-23 05:40:05,095 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 05:40:05,096 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 05:40:05,096 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 05:40:05,099 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 05:40:05,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 05:39:41" (1/3) ... [2023-12-23 05:40:05,099 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@344e237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:40:05, skipping insertion in model container [2023-12-23 05:40:05,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:39:41" (2/3) ... [2023-12-23 05:40:05,100 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@344e237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:40:05, skipping insertion in model container [2023-12-23 05:40:05,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:40:05" (3/3) ... [2023-12-23 05:40:05,101 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-96.i [2023-12-23 05:40:05,114 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 05:40:05,114 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 05:40:05,173 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 05:40:05,180 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;@77a853f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 05:40:05,180 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 05:40:05,187 INFO L276 IsEmpty]: Start isEmpty. Operand has 315 states, 193 states have (on average 1.5906735751295338) internal successors, (307), 194 states have internal predecessors, (307), 119 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 119 states have call predecessors, (119), 119 states have call successors, (119) [2023-12-23 05:40:05,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 741 [2023-12-23 05:40:05,224 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:40:05,226 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:05,227 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:40:05,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:40:05,236 INFO L85 PathProgramCache]: Analyzing trace with hash -721785083, now seen corresponding path program 1 times [2023-12-23 05:40:05,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:40:05,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1962077074] [2023-12-23 05:40:05,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:40:05,257 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 05:40:05,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:40:05,276 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 05:40:05,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-23 05:40:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:40:06,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 05:40:06,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:40:06,706 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-12-23 05:40:06,706 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:40:06,707 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:40:06,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1962077074] [2023-12-23 05:40:06,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1962077074] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:40:06,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 05:40:06,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 05:40:06,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298374943] [2023-12-23 05:40:06,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:40:06,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 05:40:06,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:40:06,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 05:40:06,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 05:40:06,737 INFO L87 Difference]: Start difference. First operand has 315 states, 193 states have (on average 1.5906735751295338) internal successors, (307), 194 states have internal predecessors, (307), 119 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 119 states have call predecessors, (119), 119 states have call successors, (119) Second operand has 2 states, 2 states have (on average 74.0) internal successors, (148), 2 states have internal predecessors, (148), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-23 05:40:09,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.48s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:40:09,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:40:09,332 INFO L93 Difference]: Finished difference Result 623 states and 1199 transitions. [2023-12-23 05:40:09,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 05:40:09,364 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 74.0) internal successors, (148), 2 states have internal predecessors, (148), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 740 [2023-12-23 05:40:09,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:40:09,375 INFO L225 Difference]: With dead ends: 623 [2023-12-23 05:40:09,376 INFO L226 Difference]: Without dead ends: 309 [2023-12-23 05:40:09,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 739 GetRequests, 739 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 05:40:09,382 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-23 05:40:09,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 523 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-23 05:40:09,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-12-23 05:40:09,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2023-12-23 05:40:09,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 188 states have (on average 1.5319148936170213) internal successors, (288), 188 states have internal predecessors, (288), 119 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 119 states have call predecessors, (119), 119 states have call successors, (119) [2023-12-23 05:40:09,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 526 transitions. [2023-12-23 05:40:09,456 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 526 transitions. Word has length 740 [2023-12-23 05:40:09,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:40:09,459 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 526 transitions. [2023-12-23 05:40:09,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 74.0) internal successors, (148), 2 states have internal predecessors, (148), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-23 05:40:09,460 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 526 transitions. [2023-12-23 05:40:09,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 741 [2023-12-23 05:40:09,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:40:09,474 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:09,523 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 05:40:09,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:40:09,701 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:40:09,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:40:09,702 INFO L85 PathProgramCache]: Analyzing trace with hash 650022215, now seen corresponding path program 1 times [2023-12-23 05:40:09,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:40:09,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [900267169] [2023-12-23 05:40:09,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:40:09,703 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 05:40:09,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:40:09,705 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 05:40:09,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-23 05:40:10,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:40:10,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 1173 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 05:40:10,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:40:11,548 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 13740 proven. 207 refuted. 0 times theorem prover too weak. 14137 trivial. 0 not checked. [2023-12-23 05:40:11,548 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:40:12,081 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 147 proven. 207 refuted. 0 times theorem prover too weak. 27730 trivial. 0 not checked. [2023-12-23 05:40:12,081 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:40:12,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [900267169] [2023-12-23 05:40:12,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [900267169] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 05:40:12,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 05:40:12,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-23 05:40:12,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764090575] [2023-12-23 05:40:12,084 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 05:40:12,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 05:40:12,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:40:12,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 05:40:12,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 05:40:12,092 INFO L87 Difference]: Start difference. First operand 309 states and 526 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 2 states have call successors, (188), 2 states have call predecessors, (188), 4 states have return successors, (189), 2 states have call predecessors, (189), 2 states have call successors, (189) [2023-12-23 05:40:15,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:40:15,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:40:15,123 INFO L93 Difference]: Finished difference Result 620 states and 1050 transitions. [2023-12-23 05:40:15,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-23 05:40:15,163 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 2 states have call successors, (188), 2 states have call predecessors, (188), 4 states have return successors, (189), 2 states have call predecessors, (189), 2 states have call successors, (189) Word has length 740 [2023-12-23 05:40:15,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:40:15,166 INFO L225 Difference]: With dead ends: 620 [2023-12-23 05:40:15,166 INFO L226 Difference]: Without dead ends: 312 [2023-12-23 05:40:15,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1482 GetRequests, 1472 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-23 05:40:15,170 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 280 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-23 05:40:15,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 911 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-23 05:40:15,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2023-12-23 05:40:15,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 310. [2023-12-23 05:40:15,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 188 states have (on average 1.4893617021276595) internal successors, (280), 188 states have internal predecessors, (280), 119 states have call successors, (119), 2 states have call predecessors, (119), 2 states have return successors, (119), 119 states have call predecessors, (119), 119 states have call successors, (119) [2023-12-23 05:40:15,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 518 transitions. [2023-12-23 05:40:15,203 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 518 transitions. Word has length 740 [2023-12-23 05:40:15,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:40:15,204 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 518 transitions. [2023-12-23 05:40:15,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 2 states have call successors, (188), 2 states have call predecessors, (188), 4 states have return successors, (189), 2 states have call predecessors, (189), 2 states have call successors, (189) [2023-12-23 05:40:15,205 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 518 transitions. [2023-12-23 05:40:15,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 742 [2023-12-23 05:40:15,209 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:40:15,210 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:15,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-23 05:40:15,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:40:15,418 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:40:15,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:40:15,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1549438415, now seen corresponding path program 1 times [2023-12-23 05:40:15,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:40:15,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [586528505] [2023-12-23 05:40:15,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:40:15,420 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 05:40:15,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:40:15,422 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 05:40:15,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-23 05:40:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:40:16,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 1174 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 05:40:16,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:40:17,385 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 13560 proven. 213 refuted. 0 times theorem prover too weak. 14311 trivial. 0 not checked. [2023-12-23 05:40:17,385 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:40:17,964 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 141 proven. 213 refuted. 0 times theorem prover too weak. 27730 trivial. 0 not checked. [2023-12-23 05:40:17,965 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:40:17,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [586528505] [2023-12-23 05:40:17,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [586528505] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 05:40:17,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 05:40:17,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-23 05:40:17,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798032613] [2023-12-23 05:40:17,965 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 05:40:17,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 05:40:17,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:40:17,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 05:40:17,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 05:40:17,968 INFO L87 Difference]: Start difference. First operand 310 states and 518 transitions. Second operand has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 2 states have call successors, (190), 2 states have call predecessors, (190), 4 states have return successors, (191), 2 states have call predecessors, (191), 2 states have call successors, (191) [2023-12-23 05:40:21,053 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 05:40:21,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:40:21,707 INFO L93 Difference]: Finished difference Result 698 states and 1159 transitions. [2023-12-23 05:40:21,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 05:40:21,707 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 2 states have call successors, (190), 2 states have call predecessors, (190), 4 states have return successors, (191), 2 states have call predecessors, (191), 2 states have call successors, (191) Word has length 741 [2023-12-23 05:40:21,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:40:21,711 INFO L225 Difference]: With dead ends: 698 [2023-12-23 05:40:21,711 INFO L226 Difference]: Without dead ends: 389 [2023-12-23 05:40:21,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1484 GetRequests, 1474 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-23 05:40:21,713 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 472 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-23 05:40:21,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 1020 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-23 05:40:21,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-12-23 05:40:21,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 384. [2023-12-23 05:40:21,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 214 states have (on average 1.4065420560747663) internal successors, (301), 215 states have internal predecessors, (301), 166 states have call successors, (166), 3 states have call predecessors, (166), 3 states have return successors, (166), 165 states have call predecessors, (166), 166 states have call successors, (166) [2023-12-23 05:40:21,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 633 transitions. [2023-12-23 05:40:21,746 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 633 transitions. Word has length 741 [2023-12-23 05:40:21,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:40:21,748 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 633 transitions. [2023-12-23 05:40:21,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 2 states have call successors, (190), 2 states have call predecessors, (190), 4 states have return successors, (191), 2 states have call predecessors, (191), 2 states have call successors, (191) [2023-12-23 05:40:21,749 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 633 transitions. [2023-12-23 05:40:21,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 743 [2023-12-23 05:40:21,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:40:21,754 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:21,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-23 05:40:21,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:40:21,980 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:40:21,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:40:21,981 INFO L85 PathProgramCache]: Analyzing trace with hash 353468656, now seen corresponding path program 1 times [2023-12-23 05:40:21,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:40:21,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395730205] [2023-12-23 05:40:21,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:40:21,982 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 05:40:21,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:40:21,983 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 05:40:21,985 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 05:40:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:40:23,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 1174 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 05:40:23,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:40:24,726 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-12-23 05:40:24,726 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:40:24,727 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:40:24,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395730205] [2023-12-23 05:40:24,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1395730205] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:40:24,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 05:40:24,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 05:40:24,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202842903] [2023-12-23 05:40:24,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:40:24,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 05:40:24,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:40:24,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 05:40:24,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 05:40:24,730 INFO L87 Difference]: Start difference. First operand 384 states and 633 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-23 05:40:29,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.51s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:40:29,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:40:29,113 INFO L93 Difference]: Finished difference Result 1008 states and 1661 transitions. [2023-12-23 05:40:29,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 05:40:29,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 742 [2023-12-23 05:40:29,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:40:29,120 INFO L225 Difference]: With dead ends: 1008 [2023-12-23 05:40:29,120 INFO L226 Difference]: Without dead ends: 696 [2023-12-23 05:40:29,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 741 GetRequests, 740 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 05:40:29,122 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 132 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-23 05:40:29,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 987 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-23 05:40:29,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2023-12-23 05:40:29,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 693. [2023-12-23 05:40:29,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 401 states have (on average 1.4139650872817955) internal successors, (567), 402 states have internal predecessors, (567), 285 states have call successors, (285), 6 states have call predecessors, (285), 6 states have return successors, (285), 284 states have call predecessors, (285), 285 states have call successors, (285) [2023-12-23 05:40:29,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1137 transitions. [2023-12-23 05:40:29,205 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1137 transitions. Word has length 742 [2023-12-23 05:40:29,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:40:29,206 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 1137 transitions. [2023-12-23 05:40:29,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-23 05:40:29,206 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1137 transitions. [2023-12-23 05:40:29,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 744 [2023-12-23 05:40:29,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:40:29,214 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:29,249 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 05:40:29,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:40:29,429 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:40:29,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:40:29,429 INFO L85 PathProgramCache]: Analyzing trace with hash -146906075, now seen corresponding path program 1 times [2023-12-23 05:40:29,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:40:29,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478966713] [2023-12-23 05:40:29,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:40:29,431 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 05:40:29,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:40:29,433 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 05:40:29,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-23 05:40:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:40:30,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 05:40:30,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:40:31,942 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-12-23 05:40:31,942 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:40:31,942 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:40:31,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1478966713] [2023-12-23 05:40:31,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1478966713] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:40:31,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 05:40:31,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 05:40:31,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453495120] [2023-12-23 05:40:31,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:40:31,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 05:40:31,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:40:31,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 05:40:31,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 05:40:31,946 INFO L87 Difference]: Start difference. First operand 693 states and 1137 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-23 05:40:33,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:40:34,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:40:34,054 INFO L93 Difference]: Finished difference Result 1935 states and 3173 transitions. [2023-12-23 05:40:34,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 05:40:34,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 743 [2023-12-23 05:40:34,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:40:34,062 INFO L225 Difference]: With dead ends: 1935 [2023-12-23 05:40:34,062 INFO L226 Difference]: Without dead ends: 1314 [2023-12-23 05:40:34,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 742 GetRequests, 741 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 05:40:34,066 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 166 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-23 05:40:34,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 1004 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-23 05:40:34,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2023-12-23 05:40:34,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1312. [2023-12-23 05:40:34,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 776 states have (on average 1.425257731958763) internal successors, (1106), 777 states have internal predecessors, (1106), 523 states have call successors, (523), 12 states have call predecessors, (523), 12 states have return successors, (523), 522 states have call predecessors, (523), 523 states have call successors, (523) [2023-12-23 05:40:34,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 2152 transitions. [2023-12-23 05:40:34,249 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 2152 transitions. Word has length 743 [2023-12-23 05:40:34,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:40:34,250 INFO L495 AbstractCegarLoop]: Abstraction has 1312 states and 2152 transitions. [2023-12-23 05:40:34,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-23 05:40:34,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 2152 transitions. [2023-12-23 05:40:34,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 744 [2023-12-23 05:40:34,255 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:40:34,256 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:34,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-23 05:40:34,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:40:34,477 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:40:34,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:40:34,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1792255971, now seen corresponding path program 1 times [2023-12-23 05:40:34,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:40:34,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896841907] [2023-12-23 05:40:34,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:40:34,479 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 05:40:34,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:40:34,480 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 05:40:34,512 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 05:40:35,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:40:35,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 05:40:35,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:40:38,482 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 14148 proven. 171 refuted. 0 times theorem prover too weak. 13765 trivial. 0 not checked. [2023-12-23 05:40:38,482 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:40:39,539 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 183 proven. 171 refuted. 0 times theorem prover too weak. 27730 trivial. 0 not checked. [2023-12-23 05:40:39,539 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:40:39,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896841907] [2023-12-23 05:40:39,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1896841907] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 05:40:39,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 05:40:39,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-12-23 05:40:39,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009486012] [2023-12-23 05:40:39,540 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 05:40:39,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-23 05:40:39,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:40:39,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-23 05:40:39,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-23 05:40:39,543 INFO L87 Difference]: Start difference. First operand 1312 states and 2152 transitions. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 4 states have call successors, (238), 3 states have call predecessors, (238), 5 states have return successors, (238), 4 states have call predecessors, (238), 4 states have call successors, (238) [2023-12-23 05:40:44,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:40:46,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:40:48,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:40:54,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:40:55,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:40:55,145 INFO L93 Difference]: Finished difference Result 5242 states and 8592 transitions. [2023-12-23 05:40:55,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-23 05:40:55,146 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 4 states have call successors, (238), 3 states have call predecessors, (238), 5 states have return successors, (238), 4 states have call predecessors, (238), 4 states have call successors, (238) Word has length 743 [2023-12-23 05:40:55,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:40:55,172 INFO L225 Difference]: With dead ends: 5242 [2023-12-23 05:40:55,173 INFO L226 Difference]: Without dead ends: 4002 [2023-12-23 05:40:55,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1488 GetRequests, 1476 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-12-23 05:40:55,180 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 971 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 1752 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1148 SdHoareTripleChecker+Valid, 1958 SdHoareTripleChecker+Invalid, 1983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 1752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2023-12-23 05:40:55,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1148 Valid, 1958 Invalid, 1983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 1752 Invalid, 0 Unknown, 0 Unchecked, 15.1s Time] [2023-12-23 05:40:55,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4002 states. [2023-12-23 05:40:55,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4002 to 3198. [2023-12-23 05:40:55,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3198 states, 1918 states have (on average 1.4327424400417101) internal successors, (2748), 1923 states have internal predecessors, (2748), 1239 states have call successors, (1239), 40 states have call predecessors, (1239), 40 states have return successors, (1239), 1234 states have call predecessors, (1239), 1239 states have call successors, (1239) [2023-12-23 05:40:55,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3198 states to 3198 states and 5226 transitions. [2023-12-23 05:40:55,712 INFO L78 Accepts]: Start accepts. Automaton has 3198 states and 5226 transitions. Word has length 743 [2023-12-23 05:40:55,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:40:55,713 INFO L495 AbstractCegarLoop]: Abstraction has 3198 states and 5226 transitions. [2023-12-23 05:40:55,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 4 states have call successors, (238), 3 states have call predecessors, (238), 5 states have return successors, (238), 4 states have call predecessors, (238), 4 states have call successors, (238) [2023-12-23 05:40:55,713 INFO L276 IsEmpty]: Start isEmpty. Operand 3198 states and 5226 transitions. [2023-12-23 05:40:55,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 744 [2023-12-23 05:40:55,719 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:40:55,719 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:55,768 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 05:40:55,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:40:55,932 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:40:55,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:40:55,933 INFO L85 PathProgramCache]: Analyzing trace with hash -257131871, now seen corresponding path program 1 times [2023-12-23 05:40:55,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:40:55,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582911411] [2023-12-23 05:40:55,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:40:55,934 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 05:40:55,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:40:55,936 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 05:40:55,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-23 05:40:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:40:57,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-23 05:40:57,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:40:58,569 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 13451 proven. 264 refuted. 0 times theorem prover too weak. 14369 trivial. 0 not checked. [2023-12-23 05:40:58,569 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:40:58,826 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:40:58,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582911411] [2023-12-23 05:40:58,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [582911411] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:40:58,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [101548295] [2023-12-23 05:40:58,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:40:58,827 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:40:58,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:40:58,867 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:40:58,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-23 05:41:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:41:00,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 05:41:00,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:41:00,588 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-12-23 05:41:00,589 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:41:00,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [101548295] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:41:00,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 05:41:00,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-12-23 05:41:00,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655316218] [2023-12-23 05:41:00,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:41:00,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 05:41:00,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:41:00,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 05:41:00,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-23 05:41:00,591 INFO L87 Difference]: Start difference. First operand 3198 states and 5226 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-23 05:41:02,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:41:02,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:41:02,826 INFO L93 Difference]: Finished difference Result 8086 states and 13283 transitions. [2023-12-23 05:41:02,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 05:41:02,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 743 [2023-12-23 05:41:02,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:41:02,852 INFO L225 Difference]: With dead ends: 8086 [2023-12-23 05:41:02,852 INFO L226 Difference]: Without dead ends: 4960 [2023-12-23 05:41:02,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1566 GetRequests, 1558 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-23 05:41:02,867 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 268 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-23 05:41:02,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 986 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-23 05:41:02,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4960 states. [2023-12-23 05:41:03,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4960 to 4946. [2023-12-23 05:41:03,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4946 states, 3245 states have (on average 1.4832049306625579) internal successors, (4813), 3262 states have internal predecessors, (4813), 1647 states have call successors, (1647), 53 states have call predecessors, (1647), 53 states have return successors, (1647), 1630 states have call predecessors, (1647), 1647 states have call successors, (1647) [2023-12-23 05:41:03,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4946 states to 4946 states and 8107 transitions. [2023-12-23 05:41:03,396 INFO L78 Accepts]: Start accepts. Automaton has 4946 states and 8107 transitions. Word has length 743 [2023-12-23 05:41:03,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:41:03,397 INFO L495 AbstractCegarLoop]: Abstraction has 4946 states and 8107 transitions. [2023-12-23 05:41:03,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-23 05:41:03,398 INFO L276 IsEmpty]: Start isEmpty. Operand 4946 states and 8107 transitions. [2023-12-23 05:41:03,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 744 [2023-12-23 05:41:03,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:41:03,409 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:41:03,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-12-23 05:41:03,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-23 05:41:03,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:41:03,834 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:41:03,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:41:03,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1059345507, now seen corresponding path program 1 times [2023-12-23 05:41:03,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:41:03,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2082272461] [2023-12-23 05:41:03,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:41:03,837 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 05:41:03,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:41:03,844 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 05:41:03,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-23 05:41:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:41:05,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-23 05:41:05,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:41:06,390 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 13451 proven. 264 refuted. 0 times theorem prover too weak. 14369 trivial. 0 not checked. [2023-12-23 05:41:06,390 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:41:06,594 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:41:06,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2082272461] [2023-12-23 05:41:06,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2082272461] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:41:06,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2051868571] [2023-12-23 05:41:06,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:41:06,598 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:41:06,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:41:06,605 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:41:06,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-12-23 05:41:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:41:08,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 05:41:08,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:41:08,383 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-12-23 05:41:08,384 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:41:08,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2051868571] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:41:08,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 05:41:08,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-12-23 05:41:08,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344872554] [2023-12-23 05:41:08,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:41:08,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 05:41:08,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:41:08,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 05:41:08,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-23 05:41:08,386 INFO L87 Difference]: Start difference. First operand 4946 states and 8107 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-23 05:41:10,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:41:10,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:41:10,814 INFO L93 Difference]: Finished difference Result 14686 states and 24077 transitions. [2023-12-23 05:41:10,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 05:41:10,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 743 [2023-12-23 05:41:10,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:41:10,865 INFO L225 Difference]: With dead ends: 14686 [2023-12-23 05:41:10,866 INFO L226 Difference]: Without dead ends: 9816 [2023-12-23 05:41:10,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1566 GetRequests, 1558 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-23 05:41:10,881 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 486 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-23 05:41:10,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 1011 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-23 05:41:10,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9816 states. [2023-12-23 05:41:11,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9816 to 9814. [2023-12-23 05:41:11,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9814 states, 6461 states have (on average 1.474229995356756) internal successors, (9525), 6494 states have internal predecessors, (9525), 3247 states have call successors, (3247), 105 states have call predecessors, (3247), 105 states have return successors, (3247), 3214 states have call predecessors, (3247), 3247 states have call successors, (3247) [2023-12-23 05:41:11,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9814 states to 9814 states and 16019 transitions. [2023-12-23 05:41:11,897 INFO L78 Accepts]: Start accepts. Automaton has 9814 states and 16019 transitions. Word has length 743 [2023-12-23 05:41:11,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:41:11,898 INFO L495 AbstractCegarLoop]: Abstraction has 9814 states and 16019 transitions. [2023-12-23 05:41:11,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-23 05:41:11,898 INFO L276 IsEmpty]: Start isEmpty. Operand 9814 states and 16019 transitions. [2023-12-23 05:41:11,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 744 [2023-12-23 05:41:11,907 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:41:11,907 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:41:11,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2023-12-23 05:41:12,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-23 05:41:12,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:41:12,324 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:41:12,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:41:12,325 INFO L85 PathProgramCache]: Analyzing trace with hash -2070462757, now seen corresponding path program 1 times [2023-12-23 05:41:12,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:41:12,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1048995609] [2023-12-23 05:41:12,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:41:12,326 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 05:41:12,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:41:12,327 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 05:41:12,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-23 05:41:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:41:13,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 1174 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-23 05:41:13,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:41:15,011 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 13451 proven. 264 refuted. 0 times theorem prover too weak. 14369 trivial. 0 not checked. [2023-12-23 05:41:15,012 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:41:15,193 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:41:15,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1048995609] [2023-12-23 05:41:15,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1048995609] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:41:15,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [41914374] [2023-12-23 05:41:15,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:41:15,194 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:41:15,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:41:15,195 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:41:15,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-12-23 05:41:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:41:16,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 1174 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 05:41:16,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:41:17,167 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-12-23 05:41:17,168 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:41:17,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [41914374] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:41:17,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 05:41:17,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2023-12-23 05:41:17,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70890209] [2023-12-23 05:41:17,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:41:17,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 05:41:17,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:41:17,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 05:41:17,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-23 05:41:17,170 INFO L87 Difference]: Start difference. First operand 9814 states and 16019 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-23 05:41:19,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:41:20,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:41:20,491 INFO L93 Difference]: Finished difference Result 20195 states and 33025 transitions. [2023-12-23 05:41:20,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 05:41:20,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 743 [2023-12-23 05:41:20,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:41:20,531 INFO L225 Difference]: With dead ends: 20195 [2023-12-23 05:41:20,531 INFO L226 Difference]: Without dead ends: 9941 [2023-12-23 05:41:20,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1566 GetRequests, 1557 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-23 05:41:20,559 INFO L413 NwaCegarLoop]: 964 mSDtfsCounter, 641 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 1853 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-23 05:41:20,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 1853 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-23 05:41:20,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9941 states. [2023-12-23 05:41:21,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9941 to 9818. [2023-12-23 05:41:21,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9818 states, 6464 states have (on average 1.4628712871287128) internal successors, (9456), 6497 states have internal predecessors, (9456), 3247 states have call successors, (3247), 106 states have call predecessors, (3247), 106 states have return successors, (3247), 3214 states have call predecessors, (3247), 3247 states have call successors, (3247) [2023-12-23 05:41:21,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9818 states to 9818 states and 15950 transitions. [2023-12-23 05:41:21,599 INFO L78 Accepts]: Start accepts. Automaton has 9818 states and 15950 transitions. Word has length 743 [2023-12-23 05:41:21,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:41:21,600 INFO L495 AbstractCegarLoop]: Abstraction has 9818 states and 15950 transitions. [2023-12-23 05:41:21,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-23 05:41:21,600 INFO L276 IsEmpty]: Start isEmpty. Operand 9818 states and 15950 transitions. [2023-12-23 05:41:21,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 744 [2023-12-23 05:41:21,608 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:41:21,608 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:41:21,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2023-12-23 05:41:21,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-23 05:41:22,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:41:22,040 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:41:22,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:41:22,041 INFO L85 PathProgramCache]: Analyzing trace with hash -784585893, now seen corresponding path program 1 times [2023-12-23 05:41:22,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:41:22,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243821194] [2023-12-23 05:41:22,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:41:22,042 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 05:41:22,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:41:22,044 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 05:41:22,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-23 05:41:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:41:23,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-23 05:41:23,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:41:24,662 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 13451 proven. 264 refuted. 0 times theorem prover too weak. 14369 trivial. 0 not checked. [2023-12-23 05:41:24,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:41:24,823 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:41:24,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243821194] [2023-12-23 05:41:24,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [243821194] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:41:24,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [77042795] [2023-12-23 05:41:24,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:41:24,824 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:41:24,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:41:24,825 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:41:24,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2023-12-23 05:41:28,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:41:28,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 05:41:28,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:41:29,199 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-12-23 05:41:29,200 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:41:29,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [77042795] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:41:29,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 05:41:29,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2023-12-23 05:41:29,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979178849] [2023-12-23 05:41:29,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:41:29,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 05:41:29,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:41:29,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 05:41:29,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-23 05:41:29,202 INFO L87 Difference]: Start difference. First operand 9818 states and 15950 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-23 05:41:32,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:41:34,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:41:34,577 INFO L93 Difference]: Finished difference Result 30264 states and 48777 transitions. [2023-12-23 05:41:34,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 05:41:34,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 743 [2023-12-23 05:41:34,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:41:34,658 INFO L225 Difference]: With dead ends: 30264 [2023-12-23 05:41:34,659 INFO L226 Difference]: Without dead ends: 20526 [2023-12-23 05:41:34,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1566 GetRequests, 1557 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-23 05:41:34,778 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 674 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-23 05:41:34,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 1159 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-23 05:41:34,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20526 states. [2023-12-23 05:41:36,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20526 to 20474. [2023-12-23 05:41:36,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20474 states, 13664 states have (on average 1.4514051522248244) internal successors, (19832), 13769 states have internal predecessors, (19832), 6511 states have call successors, (6511), 298 states have call predecessors, (6511), 298 states have return successors, (6511), 6406 states have call predecessors, (6511), 6511 states have call successors, (6511) [2023-12-23 05:41:36,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20474 states to 20474 states and 32854 transitions. [2023-12-23 05:41:36,595 INFO L78 Accepts]: Start accepts. Automaton has 20474 states and 32854 transitions. Word has length 743 [2023-12-23 05:41:36,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:41:36,596 INFO L495 AbstractCegarLoop]: Abstraction has 20474 states and 32854 transitions. [2023-12-23 05:41:36,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-23 05:41:36,596 INFO L276 IsEmpty]: Start isEmpty. Operand 20474 states and 32854 transitions. [2023-12-23 05:41:36,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 744 [2023-12-23 05:41:36,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:41:36,613 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:41:36,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2023-12-23 05:41:36,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-23 05:41:37,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:41:37,034 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:41:37,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:41:37,034 INFO L85 PathProgramCache]: Analyzing trace with hash 601410139, now seen corresponding path program 1 times [2023-12-23 05:41:37,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:41:37,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247268107] [2023-12-23 05:41:37,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:41:37,038 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 05:41:37,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:41:37,042 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 05:41:37,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-23 05:41:38,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:41:38,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-23 05:41:38,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:41:40,135 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 13451 proven. 264 refuted. 0 times theorem prover too weak. 14369 trivial. 0 not checked. [2023-12-23 05:41:40,135 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:41:40,284 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:41:40,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247268107] [2023-12-23 05:41:40,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [247268107] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:41:40,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1287206146] [2023-12-23 05:41:40,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:41:40,285 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:41:40,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:41:40,293 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:41:40,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-12-23 05:41:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:41:44,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 05:41:44,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:41:45,607 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-12-23 05:41:45,612 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:41:45,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1287206146] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:41:45,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 05:41:45,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 9 [2023-12-23 05:41:45,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381627144] [2023-12-23 05:41:45,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:41:45,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 05:41:45,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:41:45,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 05:41:45,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-23 05:41:45,614 INFO L87 Difference]: Start difference. First operand 20474 states and 32854 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-23 05:41:47,492 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 05:41:49,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:41:49,508 INFO L93 Difference]: Finished difference Result 60638 states and 97244 transitions. [2023-12-23 05:41:49,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 05:41:49,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 743 [2023-12-23 05:41:49,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:41:49,653 INFO L225 Difference]: With dead ends: 60638 [2023-12-23 05:41:49,653 INFO L226 Difference]: Without dead ends: 40244 [2023-12-23 05:41:49,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1566 GetRequests, 1558 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-23 05:41:49,703 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 127 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-23 05:41:49,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 1005 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-23 05:41:49,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40244 states. [2023-12-23 05:41:53,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40244 to 40242. [2023-12-23 05:41:53,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40242 states, 26672 states have (on average 1.437762447510498) internal successors, (38348), 26881 states have internal predecessors, (38348), 12975 states have call successors, (12975), 594 states have call predecessors, (12975), 594 states have return successors, (12975), 12766 states have call predecessors, (12975), 12975 states have call successors, (12975) [2023-12-23 05:41:53,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40242 states to 40242 states and 64298 transitions. [2023-12-23 05:41:53,537 INFO L78 Accepts]: Start accepts. Automaton has 40242 states and 64298 transitions. Word has length 743 [2023-12-23 05:41:53,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:41:53,538 INFO L495 AbstractCegarLoop]: Abstraction has 40242 states and 64298 transitions. [2023-12-23 05:41:53,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-23 05:41:53,538 INFO L276 IsEmpty]: Start isEmpty. Operand 40242 states and 64298 transitions. [2023-12-23 05:41:53,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2023-12-23 05:41:53,561 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:41:53,562 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:41:53,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-23 05:41:53,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2023-12-23 05:41:53,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 05:41:53,984 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:41:53,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:41:53,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1036172118, now seen corresponding path program 1 times [2023-12-23 05:41:53,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:41:53,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2007909697] [2023-12-23 05:41:53,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:41:53,986 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 05:41:53,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:41:53,989 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 05:41:54,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-23 05:41:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:41:55,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-23 05:41:55,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:41:56,712 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 13451 proven. 264 refuted. 0 times theorem prover too weak. 14369 trivial. 0 not checked. [2023-12-23 05:41:56,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:41:56,842 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:41:56,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2007909697] [2023-12-23 05:41:56,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2007909697] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:41:56,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [362164178] [2023-12-23 05:41:56,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:41:56,843 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:41:56,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:41:56,844 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:41:56,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2023-12-23 05:42:01,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:42:01,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 05:42:01,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:42:03,593 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-12-23 05:42:03,594 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:42:03,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [362164178] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:42:03,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 05:42:03,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2023-12-23 05:42:03,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946367282] [2023-12-23 05:42:03,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:42:03,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 05:42:03,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:42:03,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 05:42:03,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-12-23 05:42:03,596 INFO L87 Difference]: Start difference. First operand 40242 states and 64298 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-23 05:42:06,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:42:09,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:42:10,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:42:10,048 INFO L93 Difference]: Finished difference Result 93094 states and 148994 transitions. [2023-12-23 05:42:10,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 05:42:10,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 744 [2023-12-23 05:42:10,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:42:10,254 INFO L225 Difference]: With dead ends: 93094 [2023-12-23 05:42:10,254 INFO L226 Difference]: Without dead ends: 52932 [2023-12-23 05:42:10,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1570 GetRequests, 1560 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-23 05:42:10,354 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 388 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-23 05:42:10,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 1510 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-23 05:42:10,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52932 states. [2023-12-23 05:42:14,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52932 to 50050. [2023-12-23 05:42:14,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50050 states, 36403 states have (on average 1.4945471527071945) internal successors, (54406), 36611 states have internal predecessors, (54406), 13047 states have call successors, (13047), 599 states have call predecessors, (13047), 599 states have return successors, (13047), 12839 states have call predecessors, (13047), 13047 states have call successors, (13047) [2023-12-23 05:42:14,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50050 states to 50050 states and 80500 transitions. [2023-12-23 05:42:14,340 INFO L78 Accepts]: Start accepts. Automaton has 50050 states and 80500 transitions. Word has length 744 [2023-12-23 05:42:14,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:42:14,341 INFO L495 AbstractCegarLoop]: Abstraction has 50050 states and 80500 transitions. [2023-12-23 05:42:14,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-23 05:42:14,341 INFO L276 IsEmpty]: Start isEmpty. Operand 50050 states and 80500 transitions. [2023-12-23 05:42:14,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2023-12-23 05:42:14,360 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:42:14,360 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:42:14,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2023-12-23 05:42:14,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-23 05:42:14,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:42:14,777 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:42:14,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:42:14,778 INFO L85 PathProgramCache]: Analyzing trace with hash -335107540, now seen corresponding path program 1 times [2023-12-23 05:42:14,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:42:14,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [318440953] [2023-12-23 05:42:14,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:42:14,779 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 05:42:14,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:42:14,780 INFO L229 MonitoredProcess]: Starting monitored process 20 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 05:42:14,817 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 (20)] Waiting until timeout for monitored process [2023-12-23 05:42:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:42:16,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 1174 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-23 05:42:16,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:42:18,508 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 13451 proven. 264 refuted. 0 times theorem prover too weak. 14369 trivial. 0 not checked. [2023-12-23 05:42:18,508 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:42:18,705 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:42:18,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [318440953] [2023-12-23 05:42:18,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [318440953] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:42:18,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [943821939] [2023-12-23 05:42:18,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:42:18,705 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:42:18,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:42:18,706 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:42:18,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2023-12-23 05:42:24,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:42:25,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 1174 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 05:42:25,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:42:25,782 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 13404 proven. 135 refuted. 0 times theorem prover too weak. 14545 trivial. 0 not checked. [2023-12-23 05:42:25,782 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:42:25,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [943821939] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:42:25,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 05:42:25,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 8 [2023-12-23 05:42:25,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261211485] [2023-12-23 05:42:25,971 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 05:42:25,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-23 05:42:25,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:42:25,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-23 05:42:25,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-23 05:42:25,973 INFO L87 Difference]: Start difference. First operand 50050 states and 80500 transitions. Second operand has 8 states, 8 states have (on average 28.75) internal successors, (230), 8 states have internal predecessors, (230), 3 states have call successors, (163), 3 states have call predecessors, (163), 5 states have return successors, (164), 3 states have call predecessors, (164), 3 states have call successors, (164) [2023-12-23 05:42:30,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:42:32,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:42:32,659 INFO L93 Difference]: Finished difference Result 94992 states and 151847 transitions. [2023-12-23 05:42:32,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-23 05:42:32,693 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 28.75) internal successors, (230), 8 states have internal predecessors, (230), 3 states have call successors, (163), 3 states have call predecessors, (163), 5 states have return successors, (164), 3 states have call predecessors, (164), 3 states have call successors, (164) Word has length 744 [2023-12-23 05:42:32,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:42:32,852 INFO L225 Difference]: With dead ends: 94992 [2023-12-23 05:42:32,853 INFO L226 Difference]: Without dead ends: 50930 [2023-12-23 05:42:32,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1658 GetRequests, 1646 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2023-12-23 05:42:32,960 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 285 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-23 05:42:32,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 900 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-23 05:42:33,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50930 states. [2023-12-23 05:42:36,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50930 to 50314. [2023-12-23 05:42:36,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50314 states, 36601 states have (on average 1.4853146088904674) internal successors, (54364), 36809 states have internal predecessors, (54364), 13047 states have call successors, (13047), 665 states have call predecessors, (13047), 665 states have return successors, (13047), 12839 states have call predecessors, (13047), 13047 states have call successors, (13047) [2023-12-23 05:42:36,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50314 states to 50314 states and 80458 transitions. [2023-12-23 05:42:36,849 INFO L78 Accepts]: Start accepts. Automaton has 50314 states and 80458 transitions. Word has length 744 [2023-12-23 05:42:36,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:42:36,850 INFO L495 AbstractCegarLoop]: Abstraction has 50314 states and 80458 transitions. [2023-12-23 05:42:36,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 28.75) internal successors, (230), 8 states have internal predecessors, (230), 3 states have call successors, (163), 3 states have call predecessors, (163), 5 states have return successors, (164), 3 states have call predecessors, (164), 3 states have call successors, (164) [2023-12-23 05:42:36,851 INFO L276 IsEmpty]: Start isEmpty. Operand 50314 states and 80458 transitions. [2023-12-23 05:42:36,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2023-12-23 05:42:36,870 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:42:36,871 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:42:36,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-12-23 05:42:37,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2023-12-23 05:42:37,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 05:42:37,276 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:42:37,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:42:37,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1206415955, now seen corresponding path program 1 times [2023-12-23 05:42:37,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:42:37,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92992336] [2023-12-23 05:42:37,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:42:37,281 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 05:42:37,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:42:37,301 INFO L229 MonitoredProcess]: Starting monitored process 22 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 05:42:37,303 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 (22)] Waiting until timeout for monitored process [2023-12-23 05:42:38,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:42:38,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 1176 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 05:42:38,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:42:38,819 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-12-23 05:42:38,819 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:42:38,820 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:42:38,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92992336] [2023-12-23 05:42:38,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [92992336] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:42:38,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 05:42:38,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 05:42:38,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424414890] [2023-12-23 05:42:38,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:42:38,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 05:42:38,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:42:38,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 05:42:38,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 05:42:38,822 INFO L87 Difference]: Start difference. First operand 50314 states and 80458 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-23 05:42:41,219 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 05:42:43,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:42:43,764 INFO L93 Difference]: Finished difference Result 70958 states and 113308 transitions. [2023-12-23 05:42:43,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 05:42:43,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 744 [2023-12-23 05:42:43,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:42:43,928 INFO L225 Difference]: With dead ends: 70958 [2023-12-23 05:42:43,929 INFO L226 Difference]: Without dead ends: 50316 [2023-12-23 05:42:43,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 743 GetRequests, 742 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 05:42:43,999 INFO L413 NwaCegarLoop]: 907 mSDtfsCounter, 475 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-23 05:42:43,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 1405 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-23 05:42:44,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50316 states. [2023-12-23 05:42:47,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50316 to 50314. [2023-12-23 05:42:47,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50314 states, 36601 states have (on average 1.4787574109996995) internal successors, (54124), 36809 states have internal predecessors, (54124), 13047 states have call successors, (13047), 665 states have call predecessors, (13047), 665 states have return successors, (13047), 12839 states have call predecessors, (13047), 13047 states have call successors, (13047) [2023-12-23 05:42:47,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50314 states to 50314 states and 80218 transitions. [2023-12-23 05:42:47,846 INFO L78 Accepts]: Start accepts. Automaton has 50314 states and 80218 transitions. Word has length 744 [2023-12-23 05:42:47,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:42:47,848 INFO L495 AbstractCegarLoop]: Abstraction has 50314 states and 80218 transitions. [2023-12-23 05:42:47,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-23 05:42:47,848 INFO L276 IsEmpty]: Start isEmpty. Operand 50314 states and 80218 transitions. [2023-12-23 05:42:47,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 746 [2023-12-23 05:42:47,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:42:47,866 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:42:47,901 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 (22)] Forceful destruction successful, exit code 0 [2023-12-23 05:42:48,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /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 05:42:48,093 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:42:48,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:42:48,094 INFO L85 PathProgramCache]: Analyzing trace with hash -801307044, now seen corresponding path program 1 times [2023-12-23 05:42:48,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:42:48,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1826930442] [2023-12-23 05:42:48,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:42:48,095 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 05:42:48,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:42:48,096 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 05:42:48,098 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 05:42:49,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:42:49,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 1176 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-23 05:42:49,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:42:55,516 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 7092 proven. 936 refuted. 0 times theorem prover too weak. 20056 trivial. 0 not checked. [2023-12-23 05:42:55,517 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:42:55,865 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:42:55,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1826930442] [2023-12-23 05:42:55,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1826930442] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:42:55,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [168124276] [2023-12-23 05:42:55,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:42:55,866 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:42:55,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:42:55,867 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 05:42:55,870 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 05:42:59,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:43:00,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 1176 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 05:43:00,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:43:02,484 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-12-23 05:43:02,484 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:43:02,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [168124276] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:43:02,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 05:43:02,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2023-12-23 05:43:02,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266390078] [2023-12-23 05:43:02,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:43:02,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 05:43:02,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:43:02,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 05:43:02,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-12-23 05:43:02,487 INFO L87 Difference]: Start difference. First operand 50314 states and 80218 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-23 05:43:06,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:43:08,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:43:14,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:43:14,584 INFO L93 Difference]: Finished difference Result 108122 states and 171888 transitions. [2023-12-23 05:43:14,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-23 05:43:14,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 745 [2023-12-23 05:43:14,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:43:14,819 INFO L225 Difference]: With dead ends: 108122 [2023-12-23 05:43:14,819 INFO L226 Difference]: Without dead ends: 86499 [2023-12-23 05:43:14,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1573 GetRequests, 1557 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-12-23 05:43:14,894 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 774 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 1763 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-12-23 05:43:14,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 1763 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-12-23 05:43:14,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86499 states. [2023-12-23 05:43:20,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86499 to 80184. [2023-12-23 05:43:20,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80184 states, 58469 states have (on average 1.4754485282799432) internal successors, (86268), 58877 states have internal predecessors, (86268), 20711 states have call successors, (20711), 1003 states have call predecessors, (20711), 1003 states have return successors, (20711), 20303 states have call predecessors, (20711), 20711 states have call successors, (20711) [2023-12-23 05:43:21,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80184 states to 80184 states and 127690 transitions. [2023-12-23 05:43:21,164 INFO L78 Accepts]: Start accepts. Automaton has 80184 states and 127690 transitions. Word has length 745 [2023-12-23 05:43:21,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:43:21,165 INFO L495 AbstractCegarLoop]: Abstraction has 80184 states and 127690 transitions. [2023-12-23 05:43:21,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-23 05:43:21,166 INFO L276 IsEmpty]: Start isEmpty. Operand 80184 states and 127690 transitions. [2023-12-23 05:43:21,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 746 [2023-12-23 05:43:21,198 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:43:21,199 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:43:21,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2023-12-23 05:43:21,434 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 05:43:21,600 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 05:43:21,601 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:43:21,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:43:21,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1444272410, now seen corresponding path program 1 times [2023-12-23 05:43:21,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:43:21,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1983213045] [2023-12-23 05:43:21,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:43:21,602 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 05:43:21,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:43:21,604 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 05:43:21,605 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 05:43:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:43:22,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-23 05:43:22,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:43:28,420 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 7092 proven. 936 refuted. 0 times theorem prover too weak. 20056 trivial. 0 not checked. [2023-12-23 05:43:28,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:43:28,731 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:43:28,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1983213045] [2023-12-23 05:43:28,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1983213045] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:43:28,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2066102633] [2023-12-23 05:43:28,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:43:28,732 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:43:28,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:43:28,734 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:43:28,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2023-12-23 05:43:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:43:35,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 05:43:35,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:43:37,088 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 4458 proven. 324 refuted. 0 times theorem prover too weak. 23302 trivial. 0 not checked. [2023-12-23 05:43:37,088 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:43:37,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2066102633] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:43:37,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 05:43:37,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 13 [2023-12-23 05:43:37,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155499603] [2023-12-23 05:43:37,728 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 05:43:37,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-23 05:43:37,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:43:37,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-23 05:43:37,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-12-23 05:43:37,731 INFO L87 Difference]: Start difference. First operand 80184 states and 127690 transitions. Second operand has 13 states, 13 states have (on average 23.923076923076923) internal successors, (311), 13 states have internal predecessors, (311), 4 states have call successors, (226), 4 states have call predecessors, (226), 7 states have return successors, (227), 4 states have call predecessors, (227), 4 states have call successors, (227) [2023-12-23 05:43:42,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:43:44,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:43:48,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:43:51,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:44:04,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:44:04,451 INFO L93 Difference]: Finished difference Result 229940 states and 353053 transitions. [2023-12-23 05:44:04,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-23 05:44:04,452 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 23.923076923076923) internal successors, (311), 13 states have internal predecessors, (311), 4 states have call successors, (226), 4 states have call predecessors, (226), 7 states have return successors, (227), 4 states have call predecessors, (227), 4 states have call successors, (227) Word has length 745 [2023-12-23 05:44:04,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:44:05,099 INFO L225 Difference]: With dead ends: 229940 [2023-12-23 05:44:05,100 INFO L226 Difference]: Without dead ends: 162826 [2023-12-23 05:44:05,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1680 GetRequests, 1643 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=400, Invalid=1082, Unknown=0, NotChecked=0, Total=1482 [2023-12-23 05:44:05,287 INFO L413 NwaCegarLoop]: 751 mSDtfsCounter, 566 mSDsluCounter, 1927 mSDsCounter, 0 mSdLazyCounter, 1775 mSolverCounterSat, 349 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 2678 SdHoareTripleChecker+Invalid, 2125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 1775 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2023-12-23 05:44:05,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 2678 Invalid, 2125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 1775 Invalid, 1 Unknown, 0 Unchecked, 15.5s Time] [2023-12-23 05:44:05,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162826 states. [2023-12-23 05:44:18,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162826 to 129660. [2023-12-23 05:44:18,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129660 states, 83278 states have (on average 1.3390931578568168) internal successors, (111517), 84126 states have internal predecessors, (111517), 41303 states have call successors, (41303), 5078 states have call predecessors, (41303), 5078 states have return successors, (41303), 40455 states have call predecessors, (41303), 41303 states have call successors, (41303) [2023-12-23 05:44:19,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129660 states to 129660 states and 194123 transitions. [2023-12-23 05:44:19,334 INFO L78 Accepts]: Start accepts. Automaton has 129660 states and 194123 transitions. Word has length 745 [2023-12-23 05:44:19,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:44:19,335 INFO L495 AbstractCegarLoop]: Abstraction has 129660 states and 194123 transitions. [2023-12-23 05:44:19,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 23.923076923076923) internal successors, (311), 13 states have internal predecessors, (311), 4 states have call successors, (226), 4 states have call predecessors, (226), 7 states have return successors, (227), 4 states have call predecessors, (227), 4 states have call successors, (227) [2023-12-23 05:44:19,335 INFO L276 IsEmpty]: Start isEmpty. Operand 129660 states and 194123 transitions. [2023-12-23 05:44:19,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 746 [2023-12-23 05:44:19,363 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:44:19,363 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:44:19,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2023-12-23 05:44:19,631 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 05:44:19,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 05:44:19,808 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:44:19,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:44:19,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1444331992, now seen corresponding path program 1 times [2023-12-23 05:44:19,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:44:19,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [470108279] [2023-12-23 05:44:19,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:44:19,810 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 05:44:19,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:44:19,812 INFO L229 MonitoredProcess]: Starting monitored process 27 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 05:44:19,813 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 (27)] Waiting until timeout for monitored process [2023-12-23 05:44:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:44:21,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-23 05:44:21,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:45:18,996 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 13854 proven. 150 refuted. 0 times theorem prover too weak. 14080 trivial. 0 not checked. [2023-12-23 05:45:18,997 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:52:16,568 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:52:16,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [470108279] [2023-12-23 05:52:16,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [470108279] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:52:16,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1830446508] [2023-12-23 05:52:16,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:52:16,568 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:52:16,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:52:16,570 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:52:16,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2023-12-23 05:52:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:52:25,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 05:52:25,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:52:38,377 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-12-23 05:52:38,377 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:52:38,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1830446508] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:52:38,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 05:52:38,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-12-23 05:52:38,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029150711] [2023-12-23 05:52:38,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:52:38,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 05:52:38,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:52:38,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 05:52:38,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=118, Unknown=2, NotChecked=0, Total=156 [2023-12-23 05:52:38,379 INFO L87 Difference]: Start difference. First operand 129660 states and 194123 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-23 05:52:44,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]