/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-38.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 11:04:44,419 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 11:04:44,464 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 11:04:44,467 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 11:04:44,467 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 11:04:44,485 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 11:04:44,485 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 11:04:44,485 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 11:04:44,486 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 11:04:44,486 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 11:04:44,486 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 11:04:44,486 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 11:04:44,487 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 11:04:44,487 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 11:04:44,487 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 11:04:44,487 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 11:04:44,488 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 11:04:44,495 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 11:04:44,496 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 11:04:44,496 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 11:04:44,497 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 11:04:44,497 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 11:04:44,498 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 11:04:44,498 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 11:04:44,499 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 11:04:44,499 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 11:04:44,499 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 11:04:44,499 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 11:04:44,500 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 11:04:44,500 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 11:04:44,501 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 11:04:44,501 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 11:04:44,501 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 11:04:44,501 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 11:04:44,501 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 11:04:44,501 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 11:04:44,502 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 11:04:44,502 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 11:04:44,502 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 11:04:44,502 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 11:04:44,502 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 11:04:44,502 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 11:04:44,502 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 11:04:44,503 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 11:04:44,503 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 11:04:44,503 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 11:04:44,503 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 11:04:44,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 11:04:44,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 11:04:44,729 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 11:04:44,730 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 11:04:44,731 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 11:04:44,732 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-38.i [2023-12-16 11:04:45,767 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 11:04:45,966 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 11:04:45,967 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-38.i [2023-12-16 11:04:45,976 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2406629f7/4ff17479d9744524916b35f6648b09f3/FLAG0fc7243e9 [2023-12-16 11:04:45,989 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2406629f7/4ff17479d9744524916b35f6648b09f3 [2023-12-16 11:04:45,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 11:04:45,992 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 11:04:45,993 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 11:04:45,993 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 11:04:45,998 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 11:04:45,999 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 11:04:45" (1/1) ... [2023-12-16 11:04:46,000 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a957e02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:04:45, skipping insertion in model container [2023-12-16 11:04:46,000 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 11:04:45" (1/1) ... [2023-12-16 11:04:46,041 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 11:04:46,140 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-38.i[916,929] [2023-12-16 11:04:46,230 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 11:04:46,243 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 11:04:46,251 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-38.i[916,929] [2023-12-16 11:04:46,295 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 11:04:46,309 INFO L206 MainTranslator]: Completed translation [2023-12-16 11:04:46,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:04:46 WrapperNode [2023-12-16 11:04:46,310 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 11:04:46,311 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 11:04:46,311 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 11:04:46,311 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 11:04:46,316 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:04:46" (1/1) ... [2023-12-16 11:04:46,332 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:04:46" (1/1) ... [2023-12-16 11:04:46,362 INFO L138 Inliner]: procedures = 27, calls = 93, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 455 [2023-12-16 11:04:46,362 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 11:04:46,363 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 11:04:46,363 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 11:04:46,363 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 11:04:46,371 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:04:46" (1/1) ... [2023-12-16 11:04:46,371 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:04:46" (1/1) ... [2023-12-16 11:04:46,376 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:04:46" (1/1) ... [2023-12-16 11:04:46,392 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 11:04:46,392 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:04:46" (1/1) ... [2023-12-16 11:04:46,392 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:04:46" (1/1) ... [2023-12-16 11:04:46,405 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:04:46" (1/1) ... [2023-12-16 11:04:46,409 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:04:46" (1/1) ... [2023-12-16 11:04:46,412 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:04:46" (1/1) ... [2023-12-16 11:04:46,415 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:04:46" (1/1) ... [2023-12-16 11:04:46,419 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 11:04:46,420 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 11:04:46,420 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 11:04:46,420 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 11:04:46,421 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:04:46" (1/1) ... [2023-12-16 11:04:46,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 11:04:46,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 11:04:46,457 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 11:04:46,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 11:04:46,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 11:04:46,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 11:04:46,481 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 11:04:46,482 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 11:04:46,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 11:04:46,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 11:04:46,566 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 11:04:46,568 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 11:04:52,960 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 11:04:52,988 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 11:04:52,988 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 11:04:52,988 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 11:04:52 BoogieIcfgContainer [2023-12-16 11:04:52,988 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 11:04:52,990 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 11:04:52,990 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 11:04:52,995 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 11:04:52,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 11:04:45" (1/3) ... [2023-12-16 11:04:52,996 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a9efb2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 11:04:52, skipping insertion in model container [2023-12-16 11:04:52,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:04:46" (2/3) ... [2023-12-16 11:04:52,996 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a9efb2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 11:04:52, skipping insertion in model container [2023-12-16 11:04:52,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 11:04:52" (3/3) ... [2023-12-16 11:04:52,997 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-38.i [2023-12-16 11:04:53,008 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 11:04:53,008 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 11:04:53,043 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 11:04:53,048 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;@2159d06b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 11:04:53,048 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 11:04:53,052 INFO L276 IsEmpty]: Start isEmpty. Operand has 199 states, 116 states have (on average 1.5) internal successors, (174), 117 states have internal predecessors, (174), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-16 11:04:53,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2023-12-16 11:04:53,087 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:04:53,088 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:04:53,089 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:04:53,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:04:53,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1166082997, now seen corresponding path program 1 times [2023-12-16 11:04:53,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:04:53,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855682010] [2023-12-16 11:04:53,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:04:53,113 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:04:53,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:04:53,115 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:04:53,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 11:04:54,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:04:54,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 11:04:54,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:04:54,202 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 6230 proven. 0 refuted. 0 times theorem prover too weak. 6410 trivial. 0 not checked. [2023-12-16 11:04:54,202 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:04:54,202 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:04:54,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855682010] [2023-12-16 11:04:54,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855682010] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:04:54,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:04:54,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 11:04:54,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440522961] [2023-12-16 11:04:54,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:04:54,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 11:04:54,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:04:54,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 11:04:54,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 11:04:54,229 INFO L87 Difference]: Start difference. First operand has 199 states, 116 states have (on average 1.5) internal successors, (174), 117 states have internal predecessors, (174), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) Second operand has 2 states, 2 states have (on average 47.5) internal successors, (95), 2 states have internal predecessors, (95), 2 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2023-12-16 11:04:57,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.24s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 11:04:57,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:04:57,592 INFO L93 Difference]: Finished difference Result 395 states and 746 transitions. [2023-12-16 11:04:57,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 11:04:57,637 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 47.5) internal successors, (95), 2 states have internal predecessors, (95), 2 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) Word has length 488 [2023-12-16 11:04:57,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:04:57,643 INFO L225 Difference]: With dead ends: 395 [2023-12-16 11:04:57,643 INFO L226 Difference]: Without dead ends: 197 [2023-12-16 11:04:57,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 11:04:57,649 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-16 11:04:57,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 323 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-16 11:04:57,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-12-16 11:04:57,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2023-12-16 11:04:57,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 115 states have (on average 1.4434782608695653) internal successors, (166), 115 states have internal predecessors, (166), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-16 11:04:57,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 326 transitions. [2023-12-16 11:04:57,693 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 326 transitions. Word has length 488 [2023-12-16 11:04:57,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:04:57,693 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 326 transitions. [2023-12-16 11:04:57,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 47.5) internal successors, (95), 2 states have internal predecessors, (95), 2 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2023-12-16 11:04:57,694 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 326 transitions. [2023-12-16 11:04:57,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2023-12-16 11:04:57,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:04:57,701 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:04:57,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-16 11:04:57,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:04:57,927 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:04:57,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:04:57,927 INFO L85 PathProgramCache]: Analyzing trace with hash 976753997, now seen corresponding path program 1 times [2023-12-16 11:04:57,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:04:57,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364670792] [2023-12-16 11:04:57,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:04:57,929 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:04:57,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:04:57,930 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:04:57,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 11:04:58,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:04:58,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 11:04:58,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:05:00,993 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 6533 proven. 207 refuted. 0 times theorem prover too weak. 5900 trivial. 0 not checked. [2023-12-16 11:05:00,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:05:02,211 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 261 proven. 210 refuted. 0 times theorem prover too weak. 12169 trivial. 0 not checked. [2023-12-16 11:05:02,211 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:05:02,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364670792] [2023-12-16 11:05:02,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [364670792] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 11:05:02,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 11:05:02,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2023-12-16 11:05:02,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511735162] [2023-12-16 11:05:02,212 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 11:05:02,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 11:05:02,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:05:02,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 11:05:02,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-12-16 11:05:02,215 INFO L87 Difference]: Start difference. First operand 197 states and 326 transitions. Second operand has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 3 states have call successors, (116), 3 states have call predecessors, (116), 7 states have return successors, (117), 3 states have call predecessors, (117), 3 states have call successors, (117) [2023-12-16 11:05:08,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 11:05:08,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:05:08,569 INFO L93 Difference]: Finished difference Result 406 states and 661 transitions. [2023-12-16 11:05:08,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 11:05:08,616 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 3 states have call successors, (116), 3 states have call predecessors, (116), 7 states have return successors, (117), 3 states have call predecessors, (117), 3 states have call successors, (117) Word has length 488 [2023-12-16 11:05:08,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:05:08,619 INFO L225 Difference]: With dead ends: 406 [2023-12-16 11:05:08,619 INFO L226 Difference]: Without dead ends: 210 [2023-12-16 11:05:08,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 981 GetRequests, 963 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=126, Invalid=216, Unknown=0, NotChecked=0, Total=342 [2023-12-16 11:05:08,621 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 276 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-12-16 11:05:08,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 657 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-12-16 11:05:08,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-12-16 11:05:08,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 204. [2023-12-16 11:05:08,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 120 states have (on average 1.375) internal successors, (165), 120 states have internal predecessors, (165), 80 states have call successors, (80), 3 states have call predecessors, (80), 3 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-16 11:05:08,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 325 transitions. [2023-12-16 11:05:08,660 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 325 transitions. Word has length 488 [2023-12-16 11:05:08,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:05:08,662 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 325 transitions. [2023-12-16 11:05:08,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 3 states have call successors, (116), 3 states have call predecessors, (116), 7 states have return successors, (117), 3 states have call predecessors, (117), 3 states have call successors, (117) [2023-12-16 11:05:08,663 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 325 transitions. [2023-12-16 11:05:08,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2023-12-16 11:05:08,678 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:05:08,678 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:05:08,710 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 (3)] Ended with exit code 0 [2023-12-16 11:05:08,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:05:08,893 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:05:08,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:05:08,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1298995759, now seen corresponding path program 1 times [2023-12-16 11:05:08,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:05:08,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1393007404] [2023-12-16 11:05:08,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:05:08,894 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:05:08,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:05:08,895 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:05:08,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 11:05:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:05:09,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 11:05:09,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:05:10,204 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 3207 proven. 33 refuted. 0 times theorem prover too weak. 9400 trivial. 0 not checked. [2023-12-16 11:05:10,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:05:10,406 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:05:10,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1393007404] [2023-12-16 11:05:10,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1393007404] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 11:05:10,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [324677694] [2023-12-16 11:05:10,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:05:10,407 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 11:05:10,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 11:05:10,453 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 11:05:10,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-16 11:05:13,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:05:13,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 11:05:13,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:05:15,092 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-16 11:05:15,092 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:05:15,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [324677694] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:05:15,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 11:05:15,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-12-16 11:05:15,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709816901] [2023-12-16 11:05:15,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:05:15,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 11:05:15,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:05:15,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 11:05:15,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-16 11:05:15,095 INFO L87 Difference]: Start difference. First operand 204 states and 325 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-16 11:05:19,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 11:05:22,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 11:05:22,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:05:22,838 INFO L93 Difference]: Finished difference Result 996 states and 1588 transitions. [2023-12-16 11:05:22,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 11:05:22,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 488 [2023-12-16 11:05:22,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:05:22,844 INFO L225 Difference]: With dead ends: 996 [2023-12-16 11:05:22,844 INFO L226 Difference]: Without dead ends: 793 [2023-12-16 11:05:22,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1018 GetRequests, 1008 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-16 11:05:22,849 INFO L413 NwaCegarLoop]: 913 mSDtfsCounter, 547 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 161 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 1856 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-12-16 11:05:22,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 1856 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 20 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2023-12-16 11:05:22,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2023-12-16 11:05:22,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 405. [2023-12-16 11:05:22,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 238 states have (on average 1.3739495798319328) internal successors, (327), 238 states have internal predecessors, (327), 160 states have call successors, (160), 6 states have call predecessors, (160), 6 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2023-12-16 11:05:22,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 647 transitions. [2023-12-16 11:05:22,926 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 647 transitions. Word has length 488 [2023-12-16 11:05:22,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:05:22,929 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 647 transitions. [2023-12-16 11:05:22,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-16 11:05:22,929 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 647 transitions. [2023-12-16 11:05:22,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2023-12-16 11:05:22,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:05:22,934 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:05:22,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-16 11:05:23,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2023-12-16 11:05:23,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-16 11:05:23,342 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:05:23,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:05:23,342 INFO L85 PathProgramCache]: Analyzing trace with hash -709713650, now seen corresponding path program 1 times [2023-12-16 11:05:23,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:05:23,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813419272] [2023-12-16 11:05:23,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:05:23,343 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:05:23,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:05:23,344 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:05:23,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 11:05:24,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:05:24,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 11:05:24,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:05:24,580 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 3207 proven. 33 refuted. 0 times theorem prover too weak. 9400 trivial. 0 not checked. [2023-12-16 11:05:24,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:05:24,783 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:05:24,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [813419272] [2023-12-16 11:05:24,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [813419272] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 11:05:24,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1622686451] [2023-12-16 11:05:24,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:05:24,783 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 11:05:24,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 11:05:24,784 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 11:05:24,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-16 11:05:27,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:05:27,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 11:05:27,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:05:28,113 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 3207 proven. 33 refuted. 0 times theorem prover too weak. 9400 trivial. 0 not checked. [2023-12-16 11:05:28,114 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:05:28,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1622686451] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 11:05:28,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 11:05:28,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-12-16 11:05:28,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878984069] [2023-12-16 11:05:28,263 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 11:05:28,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 11:05:28,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:05:28,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 11:05:28,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 11:05:28,265 INFO L87 Difference]: Start difference. First operand 405 states and 647 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (80), 2 states have call predecessors, (80), 3 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2023-12-16 11:05:31,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 11:05:31,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:05:31,805 INFO L93 Difference]: Finished difference Result 829 states and 1311 transitions. [2023-12-16 11:05:31,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 11:05:31,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (80), 2 states have call predecessors, (80), 3 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) Word has length 489 [2023-12-16 11:05:31,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:05:31,863 INFO L225 Difference]: With dead ends: 829 [2023-12-16 11:05:31,863 INFO L226 Difference]: Without dead ends: 425 [2023-12-16 11:05:31,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1064 GetRequests, 1056 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-16 11:05:31,867 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 195 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-16 11:05:31,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 525 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-16 11:05:31,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2023-12-16 11:05:31,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 413. [2023-12-16 11:05:31,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 244 states have (on average 1.3565573770491803) internal successors, (331), 244 states have internal predecessors, (331), 160 states have call successors, (160), 8 states have call predecessors, (160), 8 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2023-12-16 11:05:31,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 651 transitions. [2023-12-16 11:05:31,909 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 651 transitions. Word has length 489 [2023-12-16 11:05:31,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:05:31,910 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 651 transitions. [2023-12-16 11:05:31,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (80), 2 states have call predecessors, (80), 3 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2023-12-16 11:05:31,910 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 651 transitions. [2023-12-16 11:05:31,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2023-12-16 11:05:31,913 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:05:31,913 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:05:31,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-12-16 11:05:32,153 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 (6)] Ended with exit code 0 [2023-12-16 11:05:32,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:05:32,324 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:05:32,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:05:32,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1591108940, now seen corresponding path program 1 times [2023-12-16 11:05:32,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:05:32,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [527154872] [2023-12-16 11:05:32,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:05:32,326 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 [2023-12-16 11:05:32,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:05:32,327 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:05:32,328 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 (8)] Waiting until timeout for monitored process [2023-12-16 11:05:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:05:33,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 11:05:33,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 11:05:54,970 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 11:05:54,974 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 11:05:56,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-16 11:05:56,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown