/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_fillercodestructure_filler-ps-cn_file-4.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 15:16:34,193 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 15:16:34,250 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 15:16:34,254 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 15:16:34,254 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 15:16:34,284 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 15:16:34,284 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 15:16:34,285 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 15:16:34,285 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 15:16:34,288 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 15:16:34,288 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 15:16:34,288 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 15:16:34,289 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 15:16:34,290 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 15:16:34,290 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 15:16:34,290 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 15:16:34,291 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 15:16:34,291 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 15:16:34,291 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 15:16:34,291 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 15:16:34,291 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 15:16:34,292 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 15:16:34,292 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 15:16:34,292 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 15:16:34,292 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 15:16:34,292 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 15:16:34,292 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 15:16:34,292 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 15:16:34,292 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 15:16:34,293 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 15:16:34,293 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 15:16:34,293 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 15:16:34,294 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 15:16:34,294 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 15:16:34,294 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 15:16:34,294 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 15:16:34,294 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 15:16:34,294 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 15:16:34,294 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 15:16:34,294 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 15:16:34,294 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 15:16:34,295 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 15:16:34,295 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 15:16:34,295 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 15:16:34,295 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 15:16:34,295 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 15:16:34,295 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 15:16:34,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 15:16:34,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 15:16:34,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 15:16:34,514 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 15:16:34,514 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 15:16:34,515 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-4.i [2023-12-23 15:16:35,576 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 15:16:35,757 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 15:16:35,758 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-4.i [2023-12-23 15:16:35,773 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f02e651e6/8fa78ada6c604639ad4f01d0dd687d41/FLAGad73bb7f1 [2023-12-23 15:16:35,783 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f02e651e6/8fa78ada6c604639ad4f01d0dd687d41 [2023-12-23 15:16:35,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 15:16:35,786 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 15:16:35,787 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 15:16:35,787 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 15:16:35,793 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 15:16:35,793 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 03:16:35" (1/1) ... [2023-12-23 15:16:35,794 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54037409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:16:35, skipping insertion in model container [2023-12-23 15:16:35,794 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 03:16:35" (1/1) ... [2023-12-23 15:16:35,838 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 15:16:35,955 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_fillercodestructure_filler-ps-cn_file-4.i[918,931] [2023-12-23 15:16:36,034 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 15:16:36,051 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 15:16:36,064 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_fillercodestructure_filler-ps-cn_file-4.i[918,931] [2023-12-23 15:16:36,109 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 15:16:36,156 INFO L206 MainTranslator]: Completed translation [2023-12-23 15:16:36,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:16:36 WrapperNode [2023-12-23 15:16:36,157 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 15:16:36,158 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 15:16:36,158 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 15:16:36,158 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 15:16:36,162 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:16:36" (1/1) ... [2023-12-23 15:16:36,181 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:16:36" (1/1) ... [2023-12-23 15:16:36,209 INFO L138 Inliner]: procedures = 27, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 237 [2023-12-23 15:16:36,209 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 15:16:36,210 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 15:16:36,210 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 15:16:36,210 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 15:16:36,219 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:16:36" (1/1) ... [2023-12-23 15:16:36,219 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:16:36" (1/1) ... [2023-12-23 15:16:36,222 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:16:36" (1/1) ... [2023-12-23 15:16:36,234 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 15:16:36,235 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:16:36" (1/1) ... [2023-12-23 15:16:36,235 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:16:36" (1/1) ... [2023-12-23 15:16:36,242 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:16:36" (1/1) ... [2023-12-23 15:16:36,244 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:16:36" (1/1) ... [2023-12-23 15:16:36,246 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:16:36" (1/1) ... [2023-12-23 15:16:36,247 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:16:36" (1/1) ... [2023-12-23 15:16:36,250 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 15:16:36,250 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 15:16:36,250 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 15:16:36,250 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 15:16:36,251 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:16:36" (1/1) ... [2023-12-23 15:16:36,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 15:16:36,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 15:16:36,288 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 15:16:36,298 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 15:16:36,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 15:16:36,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 15:16:36,311 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 15:16:36,311 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 15:16:36,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 15:16:36,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 15:16:36,377 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 15:16:36,379 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 15:16:37,139 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 15:16:37,175 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 15:16:37,176 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 15:16:37,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 03:16:37 BoogieIcfgContainer [2023-12-23 15:16:37,176 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 15:16:37,178 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 15:16:37,178 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 15:16:37,180 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 15:16:37,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 03:16:35" (1/3) ... [2023-12-23 15:16:37,180 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79fd6539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 03:16:37, skipping insertion in model container [2023-12-23 15:16:37,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:16:36" (2/3) ... [2023-12-23 15:16:37,181 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79fd6539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 03:16:37, skipping insertion in model container [2023-12-23 15:16:37,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 03:16:37" (3/3) ... [2023-12-23 15:16:37,182 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-cn_file-4.i [2023-12-23 15:16:37,195 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 15:16:37,195 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 15:16:37,249 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 15:16:37,254 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;@30b593a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 15:16:37,254 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 15:16:37,258 INFO L276 IsEmpty]: Start isEmpty. Operand has 101 states, 58 states have (on average 1.4655172413793103) internal successors, (85), 59 states have internal predecessors, (85), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-23 15:16:37,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-12-23 15:16:37,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 15:16:37,274 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:16:37,275 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 15:16:37,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 15:16:37,279 INFO L85 PathProgramCache]: Analyzing trace with hash -754074193, now seen corresponding path program 1 times [2023-12-23 15:16:37,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 15:16:37,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1833908418] [2023-12-23 15:16:37,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 15:16:37,290 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 15:16:37,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 15:16:37,294 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 15:16:37,297 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 15:16:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 15:16:37,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 15:16:37,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 15:16:37,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1310 proven. 0 refuted. 0 times theorem prover too weak. 1810 trivial. 0 not checked. [2023-12-23 15:16:37,697 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 15:16:37,698 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 15:16:37,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1833908418] [2023-12-23 15:16:37,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1833908418] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 15:16:37,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 15:16:37,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 15:16:37,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176082908] [2023-12-23 15:16:37,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 15:16:37,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 15:16:37,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 15:16:37,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 15:16:37,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 15:16:37,738 INFO L87 Difference]: Start difference. First operand has 101 states, 58 states have (on average 1.4655172413793103) internal successors, (85), 59 states have internal predecessors, (85), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2023-12-23 15:16:37,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 15:16:37,959 INFO L93 Difference]: Finished difference Result 199 states and 368 transitions. [2023-12-23 15:16:37,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 15:16:37,973 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 243 [2023-12-23 15:16:37,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 15:16:37,978 INFO L225 Difference]: With dead ends: 199 [2023-12-23 15:16:37,978 INFO L226 Difference]: Without dead ends: 99 [2023-12-23 15:16:37,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 242 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 15:16:37,986 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-23 15:16:37,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 156 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-23 15:16:37,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-12-23 15:16:38,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2023-12-23 15:16:38,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 57 states have (on average 1.3859649122807018) internal successors, (79), 57 states have internal predecessors, (79), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-23 15:16:38,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 159 transitions. [2023-12-23 15:16:38,039 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 159 transitions. Word has length 243 [2023-12-23 15:16:38,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 15:16:38,039 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 159 transitions. [2023-12-23 15:16:38,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2023-12-23 15:16:38,040 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 159 transitions. [2023-12-23 15:16:38,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-12-23 15:16:38,047 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 15:16:38,047 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:16:38,057 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 15:16:38,257 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 15:16:38,257 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 15:16:38,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 15:16:38,258 INFO L85 PathProgramCache]: Analyzing trace with hash -433499807, now seen corresponding path program 1 times [2023-12-23 15:16:38,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 15:16:38,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693606362] [2023-12-23 15:16:38,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 15:16:38,260 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 15:16:38,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 15:16:38,262 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 15:16:38,275 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 15:16:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 15:16:38,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 15:16:38,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 15:16:38,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2023-12-23 15:16:38,588 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 15:16:38,589 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 15:16:38,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693606362] [2023-12-23 15:16:38,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693606362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 15:16:38,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 15:16:38,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 15:16:38,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271985391] [2023-12-23 15:16:38,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 15:16:38,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 15:16:38,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 15:16:38,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 15:16:38,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 15:16:38,596 INFO L87 Difference]: Start difference. First operand 99 states and 159 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-23 15:16:38,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 15:16:38,986 INFO L93 Difference]: Finished difference Result 278 states and 445 transitions. [2023-12-23 15:16:38,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 15:16:38,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 244 [2023-12-23 15:16:38,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 15:16:38,989 INFO L225 Difference]: With dead ends: 278 [2023-12-23 15:16:38,989 INFO L226 Difference]: Without dead ends: 180 [2023-12-23 15:16:38,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 15:16:38,991 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 126 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-23 15:16:38,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 374 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-23 15:16:38,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-12-23 15:16:39,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 177. [2023-12-23 15:16:39,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 103 states have (on average 1.3786407766990292) internal successors, (142), 104 states have internal predecessors, (142), 71 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (71), 70 states have call predecessors, (71), 71 states have call successors, (71) [2023-12-23 15:16:39,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 284 transitions. [2023-12-23 15:16:39,009 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 284 transitions. Word has length 244 [2023-12-23 15:16:39,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 15:16:39,010 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 284 transitions. [2023-12-23 15:16:39,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-23 15:16:39,010 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 284 transitions. [2023-12-23 15:16:39,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-12-23 15:16:39,012 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 15:16:39,012 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:16:39,036 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 [2023-12-23 15:16:39,221 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 15:16:39,222 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 15:16:39,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 15:16:39,223 INFO L85 PathProgramCache]: Analyzing trace with hash -2021847709, now seen corresponding path program 1 times [2023-12-23 15:16:39,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 15:16:39,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1612925349] [2023-12-23 15:16:39,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 15:16:39,224 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 15:16:39,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 15:16:39,225 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 15:16:39,226 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 15:16:39,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 15:16:39,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-23 15:16:39,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 15:16:40,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 379 proven. 219 refuted. 0 times theorem prover too weak. 2522 trivial. 0 not checked. [2023-12-23 15:16:40,408 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 15:16:40,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 9 proven. 222 refuted. 0 times theorem prover too weak. 2889 trivial. 0 not checked. [2023-12-23 15:16:40,913 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 15:16:40,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1612925349] [2023-12-23 15:16:40,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1612925349] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 15:16:40,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 15:16:40,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2023-12-23 15:16:40,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867006938] [2023-12-23 15:16:40,923 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 15:16:40,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-23 15:16:40,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 15:16:40,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-23 15:16:40,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2023-12-23 15:16:40,925 INFO L87 Difference]: Start difference. First operand 177 states and 284 transitions. Second operand has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 3 states have call successors, (78), 3 states have call predecessors, (78), 7 states have return successors, (79), 3 states have call predecessors, (79), 3 states have call successors, (79) [2023-12-23 15:16:42,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 15:16:42,210 INFO L93 Difference]: Finished difference Result 401 states and 614 transitions. [2023-12-23 15:16:42,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-23 15:16:42,220 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 3 states have call successors, (78), 3 states have call predecessors, (78), 7 states have return successors, (79), 3 states have call predecessors, (79), 3 states have call successors, (79) Word has length 244 [2023-12-23 15:16:42,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 15:16:42,226 INFO L225 Difference]: With dead ends: 401 [2023-12-23 15:16:42,226 INFO L226 Difference]: Without dead ends: 225 [2023-12-23 15:16:42,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 473 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2023-12-23 15:16:42,229 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 135 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-23 15:16:42,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 402 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-23 15:16:42,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-12-23 15:16:42,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 201. [2023-12-23 15:16:42,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 123 states have (on average 1.2520325203252032) internal successors, (154), 124 states have internal predecessors, (154), 71 states have call successors, (71), 6 states have call predecessors, (71), 6 states have return successors, (71), 70 states have call predecessors, (71), 71 states have call successors, (71) [2023-12-23 15:16:42,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 296 transitions. [2023-12-23 15:16:42,262 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 296 transitions. Word has length 244 [2023-12-23 15:16:42,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 15:16:42,263 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 296 transitions. [2023-12-23 15:16:42,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 3 states have call successors, (78), 3 states have call predecessors, (78), 7 states have return successors, (79), 3 states have call predecessors, (79), 3 states have call successors, (79) [2023-12-23 15:16:42,263 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 296 transitions. [2023-12-23 15:16:42,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-12-23 15:16:42,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 15:16:42,265 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:16:42,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-23 15:16:42,486 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 15:16:42,492 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 15:16:42,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 15:16:42,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1252475756, now seen corresponding path program 1 times [2023-12-23 15:16:42,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 15:16:42,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [412966739] [2023-12-23 15:16:42,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 15:16:42,497 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 15:16:42,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 15:16:42,507 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 15:16:42,535 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 15:16:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 15:16:42,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 15:16:42,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 15:16:43,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 193 proven. 114 refuted. 0 times theorem prover too weak. 2813 trivial. 0 not checked. [2023-12-23 15:16:43,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 15:16:43,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 3 proven. 114 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2023-12-23 15:16:43,982 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 15:16:43,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [412966739] [2023-12-23 15:16:43,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [412966739] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 15:16:43,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 15:16:43,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 9 [2023-12-23 15:16:43,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507256080] [2023-12-23 15:16:43,982 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 15:16:43,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-23 15:16:43,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 15:16:43,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-23 15:16:43,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-23 15:16:43,984 INFO L87 Difference]: Start difference. First operand 201 states and 296 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 2 states have call successors, (80), 3 states have call predecessors, (80), 5 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2023-12-23 15:16:45,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 15:16:45,144 INFO L93 Difference]: Finished difference Result 429 states and 620 transitions. [2023-12-23 15:16:45,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-23 15:16:45,159 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 2 states have call successors, (80), 3 states have call predecessors, (80), 5 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) Word has length 245 [2023-12-23 15:16:45,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 15:16:45,160 INFO L225 Difference]: With dead ends: 429 [2023-12-23 15:16:45,160 INFO L226 Difference]: Without dead ends: 229 [2023-12-23 15:16:45,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 480 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2023-12-23 15:16:45,162 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 93 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-23 15:16:45,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 313 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-23 15:16:45,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-12-23 15:16:45,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 189. [2023-12-23 15:16:45,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 111 states have (on average 1.2432432432432432) internal successors, (138), 112 states have internal predecessors, (138), 71 states have call successors, (71), 6 states have call predecessors, (71), 6 states have return successors, (71), 70 states have call predecessors, (71), 71 states have call successors, (71) [2023-12-23 15:16:45,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 280 transitions. [2023-12-23 15:16:45,190 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 280 transitions. Word has length 245 [2023-12-23 15:16:45,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 15:16:45,191 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 280 transitions. [2023-12-23 15:16:45,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 2 states have call successors, (80), 3 states have call predecessors, (80), 5 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2023-12-23 15:16:45,195 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 280 transitions. [2023-12-23 15:16:45,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-12-23 15:16:45,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 15:16:45,197 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:16:45,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-23 15:16:45,398 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 15:16:45,398 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 15:16:45,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 15:16:45,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1544080975, now seen corresponding path program 1 times [2023-12-23 15:16:45,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 15:16:45,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21539446] [2023-12-23 15:16:45,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 15:16:45,399 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 15:16:45,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 15:16:45,416 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 15:16:45,426 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 15:16:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 15:16:45,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 15:16:45,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 15:16:45,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2023-12-23 15:16:45,990 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 15:16:45,991 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 15:16:45,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21539446] [2023-12-23 15:16:45,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21539446] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 15:16:45,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 15:16:45,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-23 15:16:45,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172357230] [2023-12-23 15:16:45,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 15:16:45,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 15:16:45,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 15:16:45,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 15:16:45,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-23 15:16:45,993 INFO L87 Difference]: Start difference. First operand 189 states and 280 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-23 15:16:46,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 15:16:46,936 INFO L93 Difference]: Finished difference Result 573 states and 844 transitions. [2023-12-23 15:16:46,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-23 15:16:46,937 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 245 [2023-12-23 15:16:46,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 15:16:46,939 INFO L225 Difference]: With dead ends: 573 [2023-12-23 15:16:46,939 INFO L226 Difference]: Without dead ends: 385 [2023-12-23 15:16:46,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-23 15:16:46,940 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 185 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-23 15:16:46,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 445 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-23 15:16:46,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2023-12-23 15:16:46,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 373. [2023-12-23 15:16:46,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 218 states have (on average 1.2201834862385321) internal successors, (266), 220 states have internal predecessors, (266), 142 states have call successors, (142), 12 states have call predecessors, (142), 12 states have return successors, (142), 140 states have call predecessors, (142), 142 states have call successors, (142) [2023-12-23 15:16:46,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 550 transitions. [2023-12-23 15:16:46,973 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 550 transitions. Word has length 245 [2023-12-23 15:16:46,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 15:16:46,973 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 550 transitions. [2023-12-23 15:16:46,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-23 15:16:46,973 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 550 transitions. [2023-12-23 15:16:46,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-12-23 15:16:46,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 15:16:46,975 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:16:46,983 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 [2023-12-23 15:16:47,182 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 15:16:47,183 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 15:16:47,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 15:16:47,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1941539695, now seen corresponding path program 1 times [2023-12-23 15:16:47,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 15:16:47,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1301430642] [2023-12-23 15:16:47,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 15:16:47,184 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 15:16:47,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 15:16:47,185 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 15:16:47,213 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 15:16:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 15:16:47,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-23 15:16:47,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 15:16:48,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1047 proven. 93 refuted. 0 times theorem prover too weak. 1980 trivial. 0 not checked. [2023-12-23 15:16:48,387 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 15:16:48,528 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 15:16:48,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1301430642] [2023-12-23 15:16:48,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1301430642] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 15:16:48,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [685428816] [2023-12-23 15:16:48,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 15:16:48,529 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 15:16:48,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 15:16:48,534 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 15:16:48,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-23 15:16:49,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 15:16:49,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-23 15:16:49,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 15:16:50,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1198 proven. 177 refuted. 0 times theorem prover too weak. 1745 trivial. 0 not checked. [2023-12-23 15:16:50,415 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 15:16:50,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [685428816] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 15:16:50,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 15:16:50,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 16 [2023-12-23 15:16:50,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285539516] [2023-12-23 15:16:50,814 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 15:16:50,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-23 15:16:50,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 15:16:50,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-23 15:16:50,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2023-12-23 15:16:50,815 INFO L87 Difference]: Start difference. First operand 373 states and 550 transitions. Second operand has 17 states, 17 states have (on average 6.117647058823529) internal successors, (104), 16 states have internal predecessors, (104), 5 states have call successors, (80), 5 states have call predecessors, (80), 8 states have return successors, (80), 5 states have call predecessors, (80), 5 states have call successors, (80) [2023-12-23 15:16:56,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 15:16:56,577 INFO L93 Difference]: Finished difference Result 1017 states and 1450 transitions. [2023-12-23 15:16:56,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-23 15:16:56,579 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.117647058823529) internal successors, (104), 16 states have internal predecessors, (104), 5 states have call successors, (80), 5 states have call predecessors, (80), 8 states have return successors, (80), 5 states have call predecessors, (80), 5 states have call successors, (80) Word has length 245 [2023-12-23 15:16:56,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 15:16:56,582 INFO L225 Difference]: With dead ends: 1017 [2023-12-23 15:16:56,582 INFO L226 Difference]: Without dead ends: 645 [2023-12-23 15:16:56,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 515 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=457, Invalid=1183, Unknown=0, NotChecked=0, Total=1640 [2023-12-23 15:16:56,583 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 399 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 323 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-23 15:16:56,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 702 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [323 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-23 15:16:56,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2023-12-23 15:16:56,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 607. [2023-12-23 15:16:56,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 363 states have (on average 1.1955922865013775) internal successors, (434), 366 states have internal predecessors, (434), 213 states have call successors, (213), 30 states have call predecessors, (213), 30 states have return successors, (213), 210 states have call predecessors, (213), 213 states have call successors, (213) [2023-12-23 15:16:56,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 860 transitions. [2023-12-23 15:16:56,637 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 860 transitions. Word has length 245 [2023-12-23 15:16:56,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 15:16:56,637 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 860 transitions. [2023-12-23 15:16:56,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.117647058823529) internal successors, (104), 16 states have internal predecessors, (104), 5 states have call successors, (80), 5 states have call predecessors, (80), 8 states have return successors, (80), 5 states have call predecessors, (80), 5 states have call successors, (80) [2023-12-23 15:16:56,637 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 860 transitions. [2023-12-23 15:16:56,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-12-23 15:16:56,639 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 15:16:56,639 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:16:56,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-23 15:16:56,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-12-23 15:16:57,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 15:16:57,057 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 15:16:57,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 15:16:57,057 INFO L85 PathProgramCache]: Analyzing trace with hash -2095262163, now seen corresponding path program 1 times [2023-12-23 15:16:57,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 15:16:57,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655279301] [2023-12-23 15:16:57,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 15:16:57,058 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 15:16:57,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 15:16:57,059 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 15:16:57,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-23 15:16:57,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 15:16:57,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 15:16:57,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 15:16:58,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2023-12-23 15:16:58,099 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 15:16:58,099 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 15:16:58,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655279301] [2023-12-23 15:16:58,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [655279301] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 15:16:58,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 15:16:58,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-23 15:16:58,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660929313] [2023-12-23 15:16:58,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 15:16:58,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 15:16:58,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 15:16:58,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 15:16:58,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-23 15:16:58,101 INFO L87 Difference]: Start difference. First operand 607 states and 860 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-23 15:16:59,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 15:16:59,102 INFO L93 Difference]: Finished difference Result 948 states and 1341 transitions. [2023-12-23 15:16:59,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-23 15:16:59,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 245 [2023-12-23 15:16:59,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 15:16:59,120 INFO L225 Difference]: With dead ends: 948 [2023-12-23 15:16:59,120 INFO L226 Difference]: Without dead ends: 342 [2023-12-23 15:16:59,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-23 15:16:59,122 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 95 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-23 15:16:59,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 485 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-23 15:16:59,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2023-12-23 15:16:59,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 314. [2023-12-23 15:16:59,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 187 states have (on average 1.213903743315508) internal successors, (227), 188 states have internal predecessors, (227), 111 states have call successors, (111), 15 states have call predecessors, (111), 15 states have return successors, (111), 110 states have call predecessors, (111), 111 states have call successors, (111) [2023-12-23 15:16:59,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 449 transitions. [2023-12-23 15:16:59,204 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 449 transitions. Word has length 245 [2023-12-23 15:16:59,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 15:16:59,205 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 449 transitions. [2023-12-23 15:16:59,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-23 15:16:59,205 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 449 transitions. [2023-12-23 15:16:59,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-12-23 15:16:59,207 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 15:16:59,207 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:16:59,217 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 (9)] Ended with exit code 0 [2023-12-23 15:16:59,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 15:16:59,417 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 15:16:59,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 15:16:59,417 INFO L85 PathProgramCache]: Analyzing trace with hash 474634054, now seen corresponding path program 1 times [2023-12-23 15:16:59,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 15:16:59,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [458407790] [2023-12-23 15:16:59,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 15:16:59,419 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 15:16:59,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 15:16:59,420 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 15:16:59,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-23 15:16:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 15:16:59,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-23 15:16:59,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-23 15:31:09,384 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 (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-23 15:31:09,384 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 [2023-12-23 15:31:09,704 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-23 15:31:09,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-23 15:31:09,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 15:31:09,909 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 247 with TraceHistMax 40,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-16-2-3-2-2-2-4-3-2-2-3-2-2-2-3-2-2-2-2-2-2-2-3-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-3-2-2-2-4-3-3-2-2-2-2-2-2-2-2-2-2-2-3-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-71-4-3-4-3-4-3-4-3-3-2-3-2-3-2-4-3-3-2-3-2-4-3-3-2-3-2-3-2-4-3-4-3-4-3-3-2-3-2-3-2-4-3-4-3-4-3-4-3-4-3-4-3-4-3-3-2-4-3-4-3-3-2-3-2-3-2-3-2-2-2-3-2-3-2-2-1 context. [2023-12-23 15:31:09,913 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 15:31:09,915 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-23 15:31:09,916 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 03:31:09 BoogieIcfgContainer [2023-12-23 15:31:09,916 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-23 15:31:09,916 INFO L158 Benchmark]: Toolchain (without parser) took 874130.72ms. Allocated memory was 215.0MB in the beginning and 2.8GB in the end (delta: 2.6GB). Free memory was 149.0MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2023-12-23 15:31:09,917 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 215.0MB. Free memory was 163.9MB in the beginning and 163.8MB in the end (delta: 129.5kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-23 15:31:09,917 INFO L158 Benchmark]: CACSL2BoogieTranslator took 370.22ms. Allocated memory was 215.0MB in the beginning and 295.7MB in the end (delta: 80.7MB). Free memory was 148.7MB in the beginning and 258.8MB in the end (delta: -110.0MB). Peak memory consumption was 24.3MB. Max. memory is 8.0GB. [2023-12-23 15:31:09,917 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.28ms. Allocated memory is still 295.7MB. Free memory was 258.8MB in the beginning and 256.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-23 15:31:09,917 INFO L158 Benchmark]: Boogie Preprocessor took 40.12ms. Allocated memory is still 295.7MB. Free memory was 256.2MB in the beginning and 252.5MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-23 15:31:09,918 INFO L158 Benchmark]: RCFGBuilder took 925.89ms. Allocated memory is still 295.7MB. Free memory was 252.0MB in the beginning and 222.6MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2023-12-23 15:31:09,918 INFO L158 Benchmark]: TraceAbstraction took 872738.54ms. Allocated memory was 295.7MB in the beginning and 2.8GB in the end (delta: 2.5GB). Free memory was 222.1MB in the beginning and 2.1GB in the end (delta: -1.9GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2023-12-23 15:31:09,919 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 215.0MB. Free memory was 163.9MB in the beginning and 163.8MB in the end (delta: 129.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 370.22ms. Allocated memory was 215.0MB in the beginning and 295.7MB in the end (delta: 80.7MB). Free memory was 148.7MB in the beginning and 258.8MB in the end (delta: -110.0MB). Peak memory consumption was 24.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 51.28ms. Allocated memory is still 295.7MB. Free memory was 258.8MB in the beginning and 256.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.12ms. Allocated memory is still 295.7MB. Free memory was 256.2MB in the beginning and 252.5MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 925.89ms. Allocated memory is still 295.7MB. Free memory was 252.0MB in the beginning and 222.6MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. * TraceAbstraction took 872738.54ms. Allocated memory was 295.7MB in the beginning and 2.8GB in the end (delta: 2.5GB). Free memory was 222.1MB in the beginning and 2.1GB in the end (delta: -1.9GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 247 with TraceHistMax 40,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-16-2-3-2-2-2-4-3-2-2-3-2-2-2-3-2-2-2-2-2-2-2-3-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-3-2-2-2-4-3-3-2-2-2-2-2-2-2-2-2-2-2-3-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-71-4-3-4-3-4-3-4-3-3-2-3-2-3-2-4-3-3-2-3-2-4-3-3-2-3-2-3-2-4-3-4-3-4-3-3-2-3-2-3-2-4-3-4-3-4-3-4-3-4-3-4-3-4-3-3-2-4-3-4-3-3-2-3-2-3-2-3-2-2-2-3-2-3-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 101 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 872.7s, OverallIterations: 8, TraceHistogramMax: 40, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 10.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1035 SdHoareTripleChecker+Valid, 9.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1033 mSDsluCounter, 2877 SdHoareTripleChecker+Invalid, 8.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1659 mSDsCounter, 457 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1951 IncrementalHoareTripleChecker+Invalid, 2408 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 457 mSolverCounterUnsat, 1218 mSDtfsCounter, 1951 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2522 GetRequests, 2434 SyntacticMatches, 3 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=607occurred in iteration=6, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 145 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 6.6s InterpolantComputationTime, 1956 NumberOfCodeBlocks, 1956 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2435 ConstructedInterpolants, 1 QuantifiedInterpolants, 12811 SizeOfPredicates, 38 NumberOfNonLiveVariables, 3188 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 30261/31200 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown