/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-44.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 00:11:59,141 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 00:11:59,220 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 00:11:59,224 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 00:11:59,225 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 00:11:59,250 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 00:11:59,251 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 00:11:59,252 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 00:11:59,252 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 00:11:59,255 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 00:11:59,256 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 00:11:59,256 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 00:11:59,256 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 00:11:59,257 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 00:11:59,257 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 00:11:59,258 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 00:11:59,258 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 00:11:59,258 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 00:11:59,258 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 00:11:59,259 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 00:11:59,259 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 00:11:59,259 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 00:11:59,259 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 00:11:59,260 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 00:11:59,260 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 00:11:59,260 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 00:11:59,260 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 00:11:59,260 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 00:11:59,261 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 00:11:59,261 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 00:11:59,262 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 00:11:59,262 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 00:11:59,262 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 00:11:59,262 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 00:11:59,262 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 00:11:59,263 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 00:11:59,263 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 00:11:59,263 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 00:11:59,263 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 00:11:59,263 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 00:11:59,263 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 00:11:59,264 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 00:11:59,264 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 00:11:59,265 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 00:11:59,265 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 00:11:59,265 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 00:11:59,265 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 00:11:59,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 00:11:59,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 00:11:59,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 00:11:59,453 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 00:11:59,453 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 00:11:59,454 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-44.i [2023-12-23 00:12:00,510 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 00:12:00,704 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 00:12:00,704 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-44.i [2023-12-23 00:12:00,720 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21191e50a/40eadcf8dfc54b9996bf93c1317c3633/FLAGd62acb47e [2023-12-23 00:12:00,731 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21191e50a/40eadcf8dfc54b9996bf93c1317c3633 [2023-12-23 00:12:00,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 00:12:00,734 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 00:12:00,735 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 00:12:00,735 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 00:12:00,741 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 00:12:00,742 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 12:12:00" (1/1) ... [2023-12-23 00:12:00,742 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15f05bb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:12:00, skipping insertion in model container [2023-12-23 00:12:00,742 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 12:12:00" (1/1) ... [2023-12-23 00:12:00,780 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 00:12:00,892 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-44.i[916,929] [2023-12-23 00:12:00,984 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 00:12:01,001 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 00:12:01,011 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-44.i[916,929] [2023-12-23 00:12:01,054 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 00:12:01,081 INFO L206 MainTranslator]: Completed translation [2023-12-23 00:12:01,081 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:12:01 WrapperNode [2023-12-23 00:12:01,081 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 00:12:01,082 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 00:12:01,082 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 00:12:01,082 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 00:12:01,089 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:12:01" (1/1) ... [2023-12-23 00:12:01,101 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:12:01" (1/1) ... [2023-12-23 00:12:01,133 INFO L138 Inliner]: procedures = 27, calls = 84, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 365 [2023-12-23 00:12:01,134 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 00:12:01,134 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 00:12:01,135 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 00:12:01,135 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 00:12:01,144 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:12:01" (1/1) ... [2023-12-23 00:12:01,144 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:12:01" (1/1) ... [2023-12-23 00:12:01,149 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:12:01" (1/1) ... [2023-12-23 00:12:01,162 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 00:12:01,162 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:12:01" (1/1) ... [2023-12-23 00:12:01,162 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:12:01" (1/1) ... [2023-12-23 00:12:01,175 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:12:01" (1/1) ... [2023-12-23 00:12:01,178 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:12:01" (1/1) ... [2023-12-23 00:12:01,181 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:12:01" (1/1) ... [2023-12-23 00:12:01,183 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:12:01" (1/1) ... [2023-12-23 00:12:01,187 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 00:12:01,187 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 00:12:01,187 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 00:12:01,188 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 00:12:01,188 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:12:01" (1/1) ... [2023-12-23 00:12:01,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 00:12:01,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 00:12:01,250 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 00:12:01,252 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 00:12:01,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 00:12:01,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 00:12:01,273 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 00:12:01,275 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 00:12:01,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 00:12:01,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 00:12:01,407 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 00:12:01,409 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 00:12:12,679 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 00:12:12,733 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 00:12:12,734 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 00:12:12,734 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 12:12:12 BoogieIcfgContainer [2023-12-23 00:12:12,734 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 00:12:12,737 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 00:12:12,737 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 00:12:12,739 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 00:12:12,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 12:12:00" (1/3) ... [2023-12-23 00:12:12,741 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aacbf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 12:12:12, skipping insertion in model container [2023-12-23 00:12:12,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:12:01" (2/3) ... [2023-12-23 00:12:12,741 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aacbf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 12:12:12, skipping insertion in model container [2023-12-23 00:12:12,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 12:12:12" (3/3) ... [2023-12-23 00:12:12,742 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-44.i [2023-12-23 00:12:12,756 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 00:12:12,756 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 00:12:12,796 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 00:12:12,804 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;@143fb658, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 00:12:12,804 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 00:12:12,809 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 81 states have (on average 1.3703703703703705) internal successors, (111), 82 states have internal predecessors, (111), 71 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2023-12-23 00:12:12,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-12-23 00:12:12,843 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 00:12:12,844 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:12:12,845 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 00:12:12,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 00:12:12,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1570190662, now seen corresponding path program 1 times [2023-12-23 00:12:12,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 00:12:12,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848652418] [2023-12-23 00:12:12,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 00:12:12,865 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 00:12:12,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 00:12:12,868 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 00:12:12,871 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 00:12:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 00:12:13,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 00:12:13,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 00:12:13,930 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 4556 proven. 0 refuted. 0 times theorem prover too weak. 5384 trivial. 0 not checked. [2023-12-23 00:12:13,931 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 00:12:13,931 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 00:12:13,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848652418] [2023-12-23 00:12:13,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1848652418] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 00:12:13,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 00:12:13,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 00:12:13,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812370314] [2023-12-23 00:12:13,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 00:12:13,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 00:12:13,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 00:12:13,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 00:12:13,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 00:12:13,959 INFO L87 Difference]: Start difference. First operand has 155 states, 81 states have (on average 1.3703703703703705) internal successors, (111), 82 states have internal predecessors, (111), 71 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) Second operand has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2023-12-23 00:12:15,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 00:12:15,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 00:12:15,589 INFO L93 Difference]: Finished difference Result 306 states and 573 transitions. [2023-12-23 00:12:15,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 00:12:15,633 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) Word has length 424 [2023-12-23 00:12:15,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 00:12:15,642 INFO L225 Difference]: With dead ends: 306 [2023-12-23 00:12:15,642 INFO L226 Difference]: Without dead ends: 152 [2023-12-23 00:12:15,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 423 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 00:12:15,648 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-23 00:12:15,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 242 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-23 00:12:15,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-12-23 00:12:15,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2023-12-23 00:12:15,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 79 states have internal predecessors, (103), 71 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2023-12-23 00:12:15,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 245 transitions. [2023-12-23 00:12:15,710 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 245 transitions. Word has length 424 [2023-12-23 00:12:15,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 00:12:15,710 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 245 transitions. [2023-12-23 00:12:15,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2023-12-23 00:12:15,711 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 245 transitions. [2023-12-23 00:12:15,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-12-23 00:12:15,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 00:12:15,717 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:12:15,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-23 00:12:15,940 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 00:12:15,941 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 00:12:15,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 00:12:15,942 INFO L85 PathProgramCache]: Analyzing trace with hash 691978656, now seen corresponding path program 1 times [2023-12-23 00:12:15,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 00:12:15,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1112946907] [2023-12-23 00:12:15,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 00:12:15,943 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 00:12:15,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 00:12:15,944 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 00:12:15,949 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 00:12:16,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 00:12:16,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-23 00:12:16,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 00:12:19,615 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 5343 proven. 270 refuted. 0 times theorem prover too weak. 4327 trivial. 0 not checked. [2023-12-23 00:12:19,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 00:12:20,953 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 342 proven. 279 refuted. 0 times theorem prover too weak. 9319 trivial. 0 not checked. [2023-12-23 00:12:20,954 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 00:12:20,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1112946907] [2023-12-23 00:12:20,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1112946907] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 00:12:20,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 00:12:20,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2023-12-23 00:12:20,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807457833] [2023-12-23 00:12:20,955 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 00:12:20,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-23 00:12:20,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 00:12:20,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-23 00:12:20,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2023-12-23 00:12:20,959 INFO L87 Difference]: Start difference. First operand 152 states and 245 transitions. Second operand has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 4 states have call successors, (104), 4 states have call predecessors, (104), 10 states have return successors, (105), 4 states have call predecessors, (105), 4 states have call successors, (105) [2023-12-23 00:12:25,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 00:12:27,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 00:12:28,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 00:12:31,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 00:12:33,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 00:12:33,572 INFO L93 Difference]: Finished difference Result 494 states and 767 transitions. [2023-12-23 00:12:33,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-23 00:12:33,573 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 4 states have call successors, (104), 4 states have call predecessors, (104), 10 states have return successors, (105), 4 states have call predecessors, (105), 4 states have call successors, (105) Word has length 424 [2023-12-23 00:12:33,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 00:12:33,578 INFO L225 Difference]: With dead ends: 494 [2023-12-23 00:12:33,578 INFO L226 Difference]: Without dead ends: 343 [2023-12-23 00:12:33,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 880 GetRequests, 833 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=652, Invalid=1604, Unknown=0, NotChecked=0, Total=2256 [2023-12-23 00:12:33,581 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 842 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 1352 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 1905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 1352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2023-12-23 00:12:33,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 991 Invalid, 1905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 1352 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2023-12-23 00:12:33,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2023-12-23 00:12:33,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 325. [2023-12-23 00:12:33,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 174 states have (on average 1.2413793103448276) internal successors, (216), 174 states have internal predecessors, (216), 142 states have call successors, (142), 8 states have call predecessors, (142), 8 states have return successors, (142), 142 states have call predecessors, (142), 142 states have call successors, (142) [2023-12-23 00:12:33,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 500 transitions. [2023-12-23 00:12:33,663 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 500 transitions. Word has length 424 [2023-12-23 00:12:33,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 00:12:33,667 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 500 transitions. [2023-12-23 00:12:33,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 4 states have call successors, (104), 4 states have call predecessors, (104), 10 states have return successors, (105), 4 states have call predecessors, (105), 4 states have call successors, (105) [2023-12-23 00:12:33,668 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 500 transitions. [2023-12-23 00:12:33,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-12-23 00:12:33,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 00:12:33,672 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:12:33,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-23 00:12:33,900 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 00:12:33,901 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 00:12:33,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 00:12:33,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1114680482, now seen corresponding path program 1 times [2023-12-23 00:12:33,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 00:12:33,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247143941] [2023-12-23 00:12:33,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 00:12:33,903 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 00:12:33,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 00:12:33,904 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 00:12:33,904 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 00:12:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 00:12:35,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-23 00:12:35,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 00:12:36,551 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 5046 proven. 87 refuted. 0 times theorem prover too weak. 4807 trivial. 0 not checked. [2023-12-23 00:12:36,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 00:12:44,450 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2023-12-23 00:12:44,451 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 00:12:44,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247143941] [2023-12-23 00:12:44,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [247143941] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-23 00:12:44,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 00:12:44,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-12-23 00:12:44,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606619718] [2023-12-23 00:12:44,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 00:12:44,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 00:12:44,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 00:12:44,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 00:12:44,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-12-23 00:12:44,454 INFO L87 Difference]: Start difference. First operand 325 states and 500 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-12-23 00:13:07,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.83s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-23 00:13:08,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-23 00:13:15,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 00:13:15,772 INFO L93 Difference]: Finished difference Result 967 states and 1486 transitions. [2023-12-23 00:13:15,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-23 00:13:15,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 424 [2023-12-23 00:13:15,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 00:13:15,801 INFO L225 Difference]: With dead ends: 967 [2023-12-23 00:13:15,801 INFO L226 Difference]: Without dead ends: 643 [2023-12-23 00:13:15,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 848 GetRequests, 835 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-12-23 00:13:15,803 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 370 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.0s IncrementalHoareTripleChecker+Time [2023-12-23 00:13:15,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 740 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 30.0s Time] [2023-12-23 00:13:15,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2023-12-23 00:13:15,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 357. [2023-12-23 00:13:15,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 204 states have (on average 1.2990196078431373) internal successors, (265), 204 states have internal predecessors, (265), 142 states have call successors, (142), 10 states have call predecessors, (142), 10 states have return successors, (142), 142 states have call predecessors, (142), 142 states have call successors, (142) [2023-12-23 00:13:15,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 549 transitions. [2023-12-23 00:13:15,858 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 549 transitions. Word has length 424 [2023-12-23 00:13:15,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 00:13:15,859 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 549 transitions. [2023-12-23 00:13:15,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-12-23 00:13:15,860 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 549 transitions. [2023-12-23 00:13:15,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-12-23 00:13:15,862 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 00:13:15,863 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:13:15,889 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 (4)] Ended with exit code 0 [2023-12-23 00:13:16,067 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 00:13:16,067 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 00:13:16,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 00:13:16,068 INFO L85 PathProgramCache]: Analyzing trace with hash -165183196, now seen corresponding path program 1 times [2023-12-23 00:13:16,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 00:13:16,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [409415913] [2023-12-23 00:13:16,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 00:13:16,069 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 00:13:16,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 00:13:16,070 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 00:13:16,072 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 00:13:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 00:13:17,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-23 00:13:17,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 00:13:19,307 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 5046 proven. 87 refuted. 0 times theorem prover too weak. 4807 trivial. 0 not checked. [2023-12-23 00:13:19,308 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 00:13:29,623 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2023-12-23 00:13:29,623 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 00:13:29,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [409415913] [2023-12-23 00:13:29,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [409415913] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-23 00:13:29,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 00:13:29,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-12-23 00:13:29,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515000391] [2023-12-23 00:13:29,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 00:13:29,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 00:13:29,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 00:13:29,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 00:13:29,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-12-23 00:13:29,627 INFO L87 Difference]: Start difference. First operand 357 states and 549 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-12-23 00:13:42,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.02s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-23 00:14:01,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 00:14:01,763 INFO L93 Difference]: Finished difference Result 1055 states and 1621 transitions. [2023-12-23 00:14:01,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-23 00:14:01,778 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 424 [2023-12-23 00:14:01,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 00:14:01,782 INFO L225 Difference]: With dead ends: 1055 [2023-12-23 00:14:01,782 INFO L226 Difference]: Without dead ends: 699 [2023-12-23 00:14:01,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 848 GetRequests, 835 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2023-12-23 00:14:01,790 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 370 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.2s IncrementalHoareTripleChecker+Time [2023-12-23 00:14:01,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 889 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 30.2s Time] [2023-12-23 00:14:01,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2023-12-23 00:14:01,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 357. [2023-12-23 00:14:01,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 204 states have (on average 1.2990196078431373) internal successors, (265), 204 states have internal predecessors, (265), 142 states have call successors, (142), 10 states have call predecessors, (142), 10 states have return successors, (142), 142 states have call predecessors, (142), 142 states have call successors, (142) [2023-12-23 00:14:01,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 549 transitions. [2023-12-23 00:14:01,838 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 549 transitions. Word has length 424 [2023-12-23 00:14:01,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 00:14:01,838 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 549 transitions. [2023-12-23 00:14:01,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-12-23 00:14:01,839 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 549 transitions. [2023-12-23 00:14:01,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-12-23 00:14:01,843 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 00:14:01,843 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:14:01,869 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 (5)] Ended with exit code 0 [2023-12-23 00:14:02,044 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 00:14:02,047 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 00:14:02,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 00:14:02,048 INFO L85 PathProgramCache]: Analyzing trace with hash 980666976, now seen corresponding path program 1 times [2023-12-23 00:14:02,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 00:14:02,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1381681465] [2023-12-23 00:14:02,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 00:14:02,049 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 00:14:02,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 00:14:02,050 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 00:14:02,051 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 00:14:03,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 00:14:03,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-23 00:14:03,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 00:14:05,214 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 5046 proven. 87 refuted. 0 times theorem prover too weak. 4807 trivial. 0 not checked. [2023-12-23 00:14:05,215 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 00:14:14,674 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2023-12-23 00:14:14,674 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 00:14:14,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1381681465] [2023-12-23 00:14:14,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1381681465] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-23 00:14:14,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 00:14:14,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-12-23 00:14:14,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004726657] [2023-12-23 00:14:14,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 00:14:14,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 00:14:14,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 00:14:14,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 00:14:14,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-12-23 00:14:14,676 INFO L87 Difference]: Start difference. First operand 357 states and 549 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-12-23 00:14:21,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-23 00:14:27,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.28s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-23 00:14:37,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 00:14:37,020 INFO L93 Difference]: Finished difference Result 911 states and 1401 transitions. [2023-12-23 00:14:37,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 00:14:37,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 424 [2023-12-23 00:14:37,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 00:14:37,050 INFO L225 Difference]: With dead ends: 911 [2023-12-23 00:14:37,050 INFO L226 Difference]: Without dead ends: 555 [2023-12-23 00:14:37,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 846 GetRequests, 836 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-12-23 00:14:37,052 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 251 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.2s IncrementalHoareTripleChecker+Time [2023-12-23 00:14:37,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 828 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 22.2s Time] [2023-12-23 00:14:37,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2023-12-23 00:14:37,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 357. [2023-12-23 00:14:37,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 204 states have (on average 1.2990196078431373) internal successors, (265), 204 states have internal predecessors, (265), 142 states have call successors, (142), 10 states have call predecessors, (142), 10 states have return successors, (142), 142 states have call predecessors, (142), 142 states have call successors, (142) [2023-12-23 00:14:37,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 549 transitions. [2023-12-23 00:14:37,092 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 549 transitions. Word has length 424 [2023-12-23 00:14:37,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 00:14:37,093 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 549 transitions. [2023-12-23 00:14:37,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-12-23 00:14:37,093 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 549 transitions. [2023-12-23 00:14:37,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-12-23 00:14:37,095 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 00:14:37,095 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:14:37,118 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 00:14:37,304 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 00:14:37,304 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 00:14:37,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 00:14:37,305 INFO L85 PathProgramCache]: Analyzing trace with hash -299196702, now seen corresponding path program 1 times [2023-12-23 00:14:37,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 00:14:37,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363161363] [2023-12-23 00:14:37,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 00:14:37,306 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 00:14:37,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 00:14:37,307 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 00:14:37,308 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 00:14:38,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 00:14:38,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-23 00:14:39,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 00:15:45,325 WARN L293 SmtUtils]: Spent 6.28s on a formula simplification that was a NOOP. DAG size: 57 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 00:16:06,043 WARN L293 SmtUtils]: Spent 8.27s on a formula simplification that was a NOOP. DAG size: 65 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)