/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-pe-ci_file-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 06:54:03,009 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 06:54:03,067 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 06:54:03,071 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 06:54:03,071 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 06:54:03,099 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 06:54:03,100 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 06:54:03,100 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 06:54:03,101 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 06:54:03,103 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 06:54:03,103 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 06:54:03,103 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 06:54:03,104 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 06:54:03,105 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 06:54:03,105 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 06:54:03,105 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 06:54:03,105 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 06:54:03,105 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 06:54:03,106 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 06:54:03,106 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 06:54:03,106 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 06:54:03,106 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 06:54:03,106 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 06:54:03,106 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 06:54:03,107 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 06:54:03,107 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 06:54:03,107 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 06:54:03,107 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 06:54:03,107 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 06:54:03,107 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 06:54:03,108 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 06:54:03,108 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 06:54:03,108 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 06:54:03,108 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 06:54:03,108 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 06:54:03,109 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 06:54:03,109 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 06:54:03,109 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 06:54:03,109 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 06:54:03,109 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 06:54:03,109 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 06:54:03,109 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 06:54:03,110 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 06:54:03,110 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 06:54:03,110 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 06:54:03,110 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 06:54:03,110 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 06:54:03,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 06:54:03,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 06:54:03,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 06:54:03,328 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 06:54:03,328 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 06:54:03,330 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-1.i [2023-12-23 06:54:04,307 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 06:54:04,478 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 06:54:04,479 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-1.i [2023-12-23 06:54:04,492 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdd0958d8/401cf57bc6484c2399b2e9401ddd4a6a/FLAGe4475b199 [2023-12-23 06:54:04,505 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdd0958d8/401cf57bc6484c2399b2e9401ddd4a6a [2023-12-23 06:54:04,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 06:54:04,508 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 06:54:04,509 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 06:54:04,509 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 06:54:04,514 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 06:54:04,515 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:54:04" (1/1) ... [2023-12-23 06:54:04,516 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@586905ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:54:04, skipping insertion in model container [2023-12-23 06:54:04,516 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:54:04" (1/1) ... [2023-12-23 06:54:04,544 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 06:54:04,641 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-pe-ci_file-1.i[918,931] [2023-12-23 06:54:04,688 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 06:54:04,703 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 06:54:04,711 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-pe-ci_file-1.i[918,931] [2023-12-23 06:54:04,737 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 06:54:04,757 INFO L206 MainTranslator]: Completed translation [2023-12-23 06:54:04,758 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:54:04 WrapperNode [2023-12-23 06:54:04,758 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 06:54:04,759 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 06:54:04,759 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 06:54:04,759 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 06:54:04,766 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:54:04" (1/1) ... [2023-12-23 06:54:04,774 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:54:04" (1/1) ... [2023-12-23 06:54:04,795 INFO L138 Inliner]: procedures = 27, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 197 [2023-12-23 06:54:04,795 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 06:54:04,796 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 06:54:04,796 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 06:54:04,796 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 06:54:04,803 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:54:04" (1/1) ... [2023-12-23 06:54:04,803 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:54:04" (1/1) ... [2023-12-23 06:54:04,807 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:54:04" (1/1) ... [2023-12-23 06:54:04,817 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 06:54:04,817 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:54:04" (1/1) ... [2023-12-23 06:54:04,817 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:54:04" (1/1) ... [2023-12-23 06:54:04,824 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:54:04" (1/1) ... [2023-12-23 06:54:04,826 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:54:04" (1/1) ... [2023-12-23 06:54:04,838 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:54:04" (1/1) ... [2023-12-23 06:54:04,839 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:54:04" (1/1) ... [2023-12-23 06:54:04,842 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 06:54:04,842 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 06:54:04,842 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 06:54:04,842 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 06:54:04,844 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:54:04" (1/1) ... [2023-12-23 06:54:04,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 06:54:04,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 06:54:04,889 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 06:54:04,912 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 06:54:04,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 06:54:04,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 06:54:04,918 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 06:54:04,919 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 06:54:04,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 06:54:04,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 06:54:05,007 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 06:54:05,009 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 06:54:05,348 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 06:54:05,389 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 06:54:05,390 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 06:54:05,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:54:05 BoogieIcfgContainer [2023-12-23 06:54:05,390 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 06:54:05,392 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 06:54:05,392 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 06:54:05,394 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 06:54:05,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 06:54:04" (1/3) ... [2023-12-23 06:54:05,395 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b615717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:54:05, skipping insertion in model container [2023-12-23 06:54:05,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:54:04" (2/3) ... [2023-12-23 06:54:05,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b615717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:54:05, skipping insertion in model container [2023-12-23 06:54:05,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:54:05" (3/3) ... [2023-12-23 06:54:05,397 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-1.i [2023-12-23 06:54:05,411 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 06:54:05,411 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 06:54:05,449 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 06:54:05,454 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;@68773ea5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 06:54:05,454 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 06:54:05,457 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 51 states have (on average 1.5098039215686274) internal successors, (77), 52 states have internal predecessors, (77), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-23 06:54:05,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-23 06:54:05,468 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 06:54:05,468 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:54:05,469 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 06:54:05,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 06:54:05,472 INFO L85 PathProgramCache]: Analyzing trace with hash -99814374, now seen corresponding path program 1 times [2023-12-23 06:54:05,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 06:54:05,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573519944] [2023-12-23 06:54:05,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 06:54:05,482 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 06:54:05,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 06:54:05,484 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 06:54:05,500 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 06:54:05,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 06:54:05,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 06:54:05,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 06:54:05,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 816 proven. 0 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked. [2023-12-23 06:54:05,852 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 06:54:05,853 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 06:54:05,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1573519944] [2023-12-23 06:54:05,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1573519944] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 06:54:05,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 06:54:05,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 06:54:05,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462773926] [2023-12-23 06:54:05,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 06:54:05,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 06:54:05,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 06:54:05,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 06:54:05,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 06:54:05,887 INFO L87 Difference]: Start difference. First operand has 85 states, 51 states have (on average 1.5098039215686274) internal successors, (77), 52 states have internal predecessors, (77), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-12-23 06:54:05,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 06:54:05,944 INFO L93 Difference]: Finished difference Result 167 states and 307 transitions. [2023-12-23 06:54:05,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 06:54:05,946 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 193 [2023-12-23 06:54:05,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 06:54:05,957 INFO L225 Difference]: With dead ends: 167 [2023-12-23 06:54:05,957 INFO L226 Difference]: Without dead ends: 83 [2023-12-23 06:54:05,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 192 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 06:54:05,967 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-23 06:54:05,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 130 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-23 06:54:05,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-23 06:54:06,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-12-23 06:54:06,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 50 states have (on average 1.42) internal successors, (71), 50 states have internal predecessors, (71), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-23 06:54:06,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 133 transitions. [2023-12-23 06:54:06,008 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 133 transitions. Word has length 193 [2023-12-23 06:54:06,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 06:54:06,008 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 133 transitions. [2023-12-23 06:54:06,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-12-23 06:54:06,009 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 133 transitions. [2023-12-23 06:54:06,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-23 06:54:06,011 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 06:54:06,012 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:54:06,022 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 06:54:06,212 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 06:54:06,215 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 06:54:06,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 06:54:06,216 INFO L85 PathProgramCache]: Analyzing trace with hash -896995108, now seen corresponding path program 1 times [2023-12-23 06:54:06,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 06:54:06,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [357247558] [2023-12-23 06:54:06,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 06:54:06,217 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 06:54:06,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 06:54:06,220 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 06:54:06,221 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 06:54:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 06:54:06,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-23 06:54:06,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 06:54:06,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 959 proven. 96 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2023-12-23 06:54:06,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 06:54:06,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-23 06:54:06,970 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 06:54:06,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [357247558] [2023-12-23 06:54:06,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [357247558] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-23 06:54:06,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 06:54:06,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-12-23 06:54:06,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417384396] [2023-12-23 06:54:06,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 06:54:06,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 06:54:06,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 06:54:06,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 06:54:06,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-23 06:54:06,979 INFO L87 Difference]: Start difference. First operand 83 states and 133 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-23 06:54:07,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 06:54:07,092 INFO L93 Difference]: Finished difference Result 165 states and 265 transitions. [2023-12-23 06:54:07,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 06:54:07,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 193 [2023-12-23 06:54:07,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 06:54:07,094 INFO L225 Difference]: With dead ends: 165 [2023-12-23 06:54:07,094 INFO L226 Difference]: Without dead ends: 83 [2023-12-23 06:54:07,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-23 06:54:07,096 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 37 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-23 06:54:07,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 194 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-23 06:54:07,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-23 06:54:07,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-12-23 06:54:07,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 50 states have (on average 1.4) internal successors, (70), 50 states have internal predecessors, (70), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-23 06:54:07,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 132 transitions. [2023-12-23 06:54:07,103 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 132 transitions. Word has length 193 [2023-12-23 06:54:07,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 06:54:07,104 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 132 transitions. [2023-12-23 06:54:07,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-23 06:54:07,105 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 132 transitions. [2023-12-23 06:54:07,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-23 06:54:07,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 06:54:07,107 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:54:07,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-23 06:54:07,315 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 06:54:07,316 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 06:54:07,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 06:54:07,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1918063462, now seen corresponding path program 1 times [2023-12-23 06:54:07,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 06:54:07,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [168601261] [2023-12-23 06:54:07,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 06:54:07,318 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 06:54:07,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 06:54:07,319 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 06:54:07,324 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 06:54:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 06:54:07,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 06:54:07,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 06:54:07,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-23 06:54:07,716 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 06:54:07,717 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 06:54:07,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [168601261] [2023-12-23 06:54:07,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [168601261] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 06:54:07,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 06:54:07,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 06:54:07,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510198191] [2023-12-23 06:54:07,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 06:54:07,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 06:54:07,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 06:54:07,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 06:54:07,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 06:54:07,727 INFO L87 Difference]: Start difference. First operand 83 states and 132 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-23 06:54:07,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 06:54:07,788 INFO L93 Difference]: Finished difference Result 247 states and 394 transitions. [2023-12-23 06:54:07,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 06:54:07,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 193 [2023-12-23 06:54:07,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 06:54:07,791 INFO L225 Difference]: With dead ends: 247 [2023-12-23 06:54:07,791 INFO L226 Difference]: Without dead ends: 165 [2023-12-23 06:54:07,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 191 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 06:54:07,792 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 36 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-23 06:54:07,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 273 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-23 06:54:07,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-12-23 06:54:07,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 163. [2023-12-23 06:54:07,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 98 states have (on average 1.3979591836734695) internal successors, (137), 98 states have internal predecessors, (137), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-23 06:54:07,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 261 transitions. [2023-12-23 06:54:07,824 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 261 transitions. Word has length 193 [2023-12-23 06:54:07,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 06:54:07,825 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 261 transitions. [2023-12-23 06:54:07,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-23 06:54:07,825 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 261 transitions. [2023-12-23 06:54:07,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-12-23 06:54:07,827 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 06:54:07,827 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:54:07,836 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 06:54:08,036 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 06:54:08,037 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 06:54:08,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 06:54:08,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1185587378, now seen corresponding path program 1 times [2023-12-23 06:54:08,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 06:54:08,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [888844025] [2023-12-23 06:54:08,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 06:54:08,038 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 06:54:08,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 06:54:08,039 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 06:54:08,048 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 06:54:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 06:54:08,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 06:54:08,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 06:54:08,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 940 proven. 51 refuted. 0 times theorem prover too weak. 869 trivial. 0 not checked. [2023-12-23 06:54:08,394 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 06:54:08,442 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 06:54:08,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [888844025] [2023-12-23 06:54:08,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [888844025] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 06:54:08,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1400284235] [2023-12-23 06:54:08,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 06:54:08,443 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 06:54:08,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 06:54:08,473 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 06:54:08,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-23 06:54:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 06:54:09,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 06:54:09,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 06:54:09,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-23 06:54:09,214 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 06:54:09,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1400284235] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 06:54:09,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 06:54:09,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-12-23 06:54:09,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969322936] [2023-12-23 06:54:09,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 06:54:09,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 06:54:09,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 06:54:09,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 06:54:09,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-23 06:54:09,217 INFO L87 Difference]: Start difference. First operand 163 states and 261 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-23 06:54:09,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 06:54:09,902 INFO L93 Difference]: Finished difference Result 465 states and 734 transitions. [2023-12-23 06:54:09,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-23 06:54:09,904 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 194 [2023-12-23 06:54:09,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 06:54:09,906 INFO L225 Difference]: With dead ends: 465 [2023-12-23 06:54:09,906 INFO L226 Difference]: Without dead ends: 303 [2023-12-23 06:54:09,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-12-23 06:54:09,907 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 245 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-23 06:54:09,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 348 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-23 06:54:09,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-12-23 06:54:09,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 218. [2023-12-23 06:54:09,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 138 states have (on average 1.3623188405797102) internal successors, (188), 139 states have internal predecessors, (188), 75 states have call successors, (75), 4 states have call predecessors, (75), 4 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) [2023-12-23 06:54:09,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 338 transitions. [2023-12-23 06:54:09,948 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 338 transitions. Word has length 194 [2023-12-23 06:54:09,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 06:54:09,949 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 338 transitions. [2023-12-23 06:54:09,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-23 06:54:09,950 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 338 transitions. [2023-12-23 06:54:09,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-23 06:54:09,952 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 06:54:09,952 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:54:09,962 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 06:54:10,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2023-12-23 06:54:10,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 06:54:10,361 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 06:54:10,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 06:54:10,361 INFO L85 PathProgramCache]: Analyzing trace with hash -605713349, now seen corresponding path program 1 times [2023-12-23 06:54:10,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 06:54:10,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [145930155] [2023-12-23 06:54:10,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 06:54:10,362 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 06:54:10,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 06:54:10,363 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 06:54:10,380 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 06:54:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 06:54:10,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-23 06:54:10,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 06:54:11,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 1085 proven. 159 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2023-12-23 06:54:11,596 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 06:54:12,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 21 proven. 69 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2023-12-23 06:54:12,263 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 06:54:12,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [145930155] [2023-12-23 06:54:12,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [145930155] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 06:54:12,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 06:54:12,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 24 [2023-12-23 06:54:12,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109653231] [2023-12-23 06:54:12,263 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 06:54:12,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-23 06:54:12,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 06:54:12,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-23 06:54:12,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=373, Unknown=0, NotChecked=0, Total=552 [2023-12-23 06:54:12,266 INFO L87 Difference]: Start difference. First operand 218 states and 338 transitions. Second operand has 24 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 23 states have internal predecessors, (86), 5 states have call successors, (62), 5 states have call predecessors, (62), 8 states have return successors, (62), 5 states have call predecessors, (62), 5 states have call successors, (62) [2023-12-23 06:54:16,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 06:54:16,897 INFO L93 Difference]: Finished difference Result 1285 states and 1922 transitions. [2023-12-23 06:54:16,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-12-23 06:54:16,906 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 23 states have internal predecessors, (86), 5 states have call successors, (62), 5 states have call predecessors, (62), 8 states have return successors, (62), 5 states have call predecessors, (62), 5 states have call successors, (62) Word has length 195 [2023-12-23 06:54:16,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 06:54:16,914 INFO L225 Difference]: With dead ends: 1285 [2023-12-23 06:54:16,915 INFO L226 Difference]: Without dead ends: 1089 [2023-12-23 06:54:16,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 374 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2552 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2088, Invalid=4392, Unknown=0, NotChecked=0, Total=6480 [2023-12-23 06:54:16,918 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 1028 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 2055 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 2324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 2055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-23 06:54:16,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1107 Valid, 878 Invalid, 2324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 2055 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-23 06:54:16,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2023-12-23 06:54:16,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 405. [2023-12-23 06:54:16,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 275 states have (on average 1.3345454545454545) internal successors, (367), 277 states have internal predecessors, (367), 113 states have call successors, (113), 16 states have call predecessors, (113), 16 states have return successors, (113), 111 states have call predecessors, (113), 113 states have call successors, (113) [2023-12-23 06:54:16,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 593 transitions. [2023-12-23 06:54:16,964 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 593 transitions. Word has length 195 [2023-12-23 06:54:16,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 06:54:16,965 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 593 transitions. [2023-12-23 06:54:16,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 23 states have internal predecessors, (86), 5 states have call successors, (62), 5 states have call predecessors, (62), 8 states have return successors, (62), 5 states have call predecessors, (62), 5 states have call successors, (62) [2023-12-23 06:54:16,965 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 593 transitions. [2023-12-23 06:54:16,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-23 06:54:16,966 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 06:54:16,966 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:54:16,974 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 06:54:17,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 06:54:17,174 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 06:54:17,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 06:54:17,175 INFO L85 PathProgramCache]: Analyzing trace with hash -677743303, now seen corresponding path program 1 times [2023-12-23 06:54:17,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 06:54:17,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1781899891] [2023-12-23 06:54:17,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 06:54:17,175 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 06:54:17,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 06:54:17,176 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 06:54:17,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-23 06:54:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 06:54:17,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-23 06:54:17,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-23 07:08:00,601 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-23 07:08:00,643 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 07:08:01,703 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 (8)] Ended with exit code 0 [2023-12-23 07:08:01,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0