./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/digits_for.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/digits_for.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ae5df297f2d3ee5d728aff1b63a3afef9bfbadb73abd56462b4581e636fe830d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 22:13:19,862 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 22:13:19,928 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 22:13:19,937 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 22:13:19,937 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 22:13:19,969 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 22:13:19,969 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 22:13:19,970 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 22:13:19,970 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 22:13:19,971 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 22:13:19,971 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 22:13:19,971 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 22:13:19,972 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 22:13:19,972 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 22:13:19,973 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 22:13:19,973 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 22:13:19,973 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 22:13:19,974 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 22:13:19,974 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 22:13:19,974 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 22:13:19,975 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 22:13:19,975 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 22:13:19,975 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 22:13:19,976 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 22:13:19,976 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 22:13:19,976 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 22:13:19,976 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 22:13:19,977 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 22:13:19,977 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 22:13:19,977 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 22:13:19,978 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 22:13:19,978 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 22:13:19,982 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 22:13:19,983 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 22:13:19,983 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 22:13:19,983 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 22:13:19,983 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 22:13:19,983 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 22:13:19,984 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 22:13:19,984 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 22:13:19,984 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 22:13:19,987 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 22:13:19,988 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae5df297f2d3ee5d728aff1b63a3afef9bfbadb73abd56462b4581e636fe830d [2024-10-23 22:13:20,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 22:13:20,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 22:13:20,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 22:13:20,289 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 22:13:20,290 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 22:13:20,291 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/digits_for.c [2024-10-23 22:13:21,811 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 22:13:22,027 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 22:13:22,028 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/digits_for.c [2024-10-23 22:13:22,035 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03e86704d/31b7a6dd5fd1438880dae80e6fd7c08d/FLAG06f2a883e [2024-10-23 22:13:22,404 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03e86704d/31b7a6dd5fd1438880dae80e6fd7c08d [2024-10-23 22:13:22,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 22:13:22,408 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 22:13:22,409 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 22:13:22,410 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 22:13:22,417 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 22:13:22,418 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:13:22" (1/1) ... [2024-10-23 22:13:22,421 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27198c48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:22, skipping insertion in model container [2024-10-23 22:13:22,421 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:13:22" (1/1) ... [2024-10-23 22:13:22,437 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 22:13:22,623 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/digits_for.c[315,328] [2024-10-23 22:13:22,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 22:13:22,653 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 22:13:22,665 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/digits_for.c[315,328] [2024-10-23 22:13:22,670 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 22:13:22,690 INFO L204 MainTranslator]: Completed translation [2024-10-23 22:13:22,691 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:22 WrapperNode [2024-10-23 22:13:22,691 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 22:13:22,692 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 22:13:22,693 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 22:13:22,693 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 22:13:22,700 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:22" (1/1) ... [2024-10-23 22:13:22,706 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:22" (1/1) ... [2024-10-23 22:13:22,721 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 31 [2024-10-23 22:13:22,722 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 22:13:22,723 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 22:13:22,723 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 22:13:22,726 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 22:13:22,736 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:22" (1/1) ... [2024-10-23 22:13:22,736 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:22" (1/1) ... [2024-10-23 22:13:22,737 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:22" (1/1) ... [2024-10-23 22:13:22,747 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]. [2024-10-23 22:13:22,747 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:22" (1/1) ... [2024-10-23 22:13:22,748 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:22" (1/1) ... [2024-10-23 22:13:22,758 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:22" (1/1) ... [2024-10-23 22:13:22,761 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:22" (1/1) ... [2024-10-23 22:13:22,762 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:22" (1/1) ... [2024-10-23 22:13:22,763 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:22" (1/1) ... [2024-10-23 22:13:22,764 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 22:13:22,765 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 22:13:22,765 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 22:13:22,765 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 22:13:22,767 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:22" (1/1) ... [2024-10-23 22:13:22,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 22:13:22,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:13:22,805 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) [2024-10-23 22:13:22,808 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 [2024-10-23 22:13:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 22:13:22,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 22:13:22,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 22:13:22,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 22:13:22,930 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 22:13:22,932 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 22:13:23,058 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-10-23 22:13:23,062 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 22:13:23,095 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 22:13:23,099 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 22:13:23,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:13:23 BoogieIcfgContainer [2024-10-23 22:13:23,100 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 22:13:23,103 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 22:13:23,104 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 22:13:23,111 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 22:13:23,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:13:22" (1/3) ... [2024-10-23 22:13:23,115 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@703d335b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:13:23, skipping insertion in model container [2024-10-23 22:13:23,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:22" (2/3) ... [2024-10-23 22:13:23,116 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@703d335b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:13:23, skipping insertion in model container [2024-10-23 22:13:23,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:13:23" (3/3) ... [2024-10-23 22:13:23,118 INFO L112 eAbstractionObserver]: Analyzing ICFG digits_for.c [2024-10-23 22:13:23,134 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 22:13:23,135 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 22:13:23,196 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 22:13:23,203 INFO L333 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, 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;@10fd6a3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 22:13:23,203 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 22:13:23,208 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:13:23,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-23 22:13:23,214 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:13:23,216 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-23 22:13:23,217 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:13:23,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:13:23,223 INFO L85 PathProgramCache]: Analyzing trace with hash 59359658, now seen corresponding path program 1 times [2024-10-23 22:13:23,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:13:23,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300477477] [2024-10-23 22:13:23,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:13:23,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:13:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-23 22:13:23,330 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-23 22:13:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-23 22:13:23,367 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-23 22:13:23,369 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-23 22:13:23,371 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-23 22:13:23,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 22:13:23,376 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-10-23 22:13:23,392 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-23 22:13:23,396 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:13:23 BoogieIcfgContainer [2024-10-23 22:13:23,396 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-23 22:13:23,397 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-23 22:13:23,397 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-23 22:13:23,397 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-23 22:13:23,398 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:13:23" (3/4) ... [2024-10-23 22:13:23,399 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-23 22:13:23,402 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-23 22:13:23,403 INFO L158 Benchmark]: Toolchain (without parser) took 995.37ms. Allocated memory is still 142.6MB. Free memory was 108.8MB in the beginning and 68.3MB in the end (delta: 40.5MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2024-10-23 22:13:23,404 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 142.6MB. Free memory was 115.2MB in the beginning and 115.0MB in the end (delta: 159.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-23 22:13:23,404 INFO L158 Benchmark]: CACSL2BoogieTranslator took 282.01ms. Allocated memory is still 142.6MB. Free memory was 108.4MB in the beginning and 96.7MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-23 22:13:23,406 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.15ms. Allocated memory is still 142.6MB. Free memory was 96.7MB in the beginning and 95.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-23 22:13:23,406 INFO L158 Benchmark]: Boogie Preprocessor took 41.14ms. Allocated memory is still 142.6MB. Free memory was 95.1MB in the beginning and 93.4MB in the end (delta: 1.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-23 22:13:23,407 INFO L158 Benchmark]: RCFGBuilder took 335.76ms. Allocated memory is still 142.6MB. Free memory was 93.4MB in the beginning and 82.6MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-23 22:13:23,408 INFO L158 Benchmark]: TraceAbstraction took 293.28ms. Allocated memory is still 142.6MB. Free memory was 82.1MB in the beginning and 68.7MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-23 22:13:23,409 INFO L158 Benchmark]: Witness Printer took 5.59ms. Allocated memory is still 142.6MB. Free memory was 68.7MB in the beginning and 68.3MB in the end (delta: 420.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-23 22:13:23,412 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 142.6MB. Free memory was 115.2MB in the beginning and 115.0MB in the end (delta: 159.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 282.01ms. Allocated memory is still 142.6MB. Free memory was 108.4MB in the beginning and 96.7MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.15ms. Allocated memory is still 142.6MB. Free memory was 96.7MB in the beginning and 95.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 41.14ms. Allocated memory is still 142.6MB. Free memory was 95.1MB in the beginning and 93.4MB in the end (delta: 1.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 335.76ms. Allocated memory is still 142.6MB. Free memory was 93.4MB in the beginning and 82.6MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 293.28ms. Allocated memory is still 142.6MB. Free memory was 82.1MB in the beginning and 68.7MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 5.59ms. Allocated memory is still 142.6MB. Free memory was 68.7MB in the beginning and 68.3MB in the end (delta: 420.2kB). There was no memory consumed. Max. memory is 16.1GB. * 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 - UnprovableResult [Line: 4]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryLONGDOUBLEComparisonOperation at line 11, overapproximation of someBinaryArithmeticDOUBLEoperation at line 8. Possible FailurePath: [L8] long double x = 1.0/7.0; [L9] long long res = 0; [L11] int i = 1; VAL [i=1, res=0] [L11] COND FALSE !(x != 0) VAL [i=1, res=0] [L17] CALL __VERIFIER_assert(res == 67050) [L4] COND TRUE !(cond) [L4] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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: unable to determine feasibility of some traces [2024-10-23 22:13:23,450 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 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/digits_for.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ae5df297f2d3ee5d728aff1b63a3afef9bfbadb73abd56462b4581e636fe830d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 22:13:25,696 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 22:13:25,779 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-10-23 22:13:25,786 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 22:13:25,787 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 22:13:25,820 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 22:13:25,823 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 22:13:25,824 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 22:13:25,825 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 22:13:25,825 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 22:13:25,826 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 22:13:25,826 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 22:13:25,827 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 22:13:25,827 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 22:13:25,828 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 22:13:25,828 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 22:13:25,828 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 22:13:25,829 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 22:13:25,829 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 22:13:25,829 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 22:13:25,829 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 22:13:25,835 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 22:13:25,836 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 22:13:25,836 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-23 22:13:25,836 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-23 22:13:25,836 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 22:13:25,836 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-23 22:13:25,837 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 22:13:25,837 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 22:13:25,837 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 22:13:25,837 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 22:13:25,838 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 22:13:25,838 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 22:13:25,838 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 22:13:25,840 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 22:13:25,840 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 22:13:25,840 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 22:13:25,841 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 22:13:25,841 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-23 22:13:25,841 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-23 22:13:25,842 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 22:13:25,842 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 22:13:25,842 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 22:13:25,842 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 22:13:25,842 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-23 22:13:25,843 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae5df297f2d3ee5d728aff1b63a3afef9bfbadb73abd56462b4581e636fe830d [2024-10-23 22:13:26,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 22:13:26,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 22:13:26,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 22:13:26,246 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 22:13:26,247 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 22:13:26,248 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/digits_for.c [2024-10-23 22:13:27,774 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 22:13:27,976 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 22:13:27,977 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/digits_for.c [2024-10-23 22:13:27,985 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/569ec4dfe/470f220491214408aef4bf271d569456/FLAG2f1602cbb [2024-10-23 22:13:28,001 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/569ec4dfe/470f220491214408aef4bf271d569456 [2024-10-23 22:13:28,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 22:13:28,006 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 22:13:28,009 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 22:13:28,009 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 22:13:28,016 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 22:13:28,017 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:13:28" (1/1) ... [2024-10-23 22:13:28,018 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c56c199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:28, skipping insertion in model container [2024-10-23 22:13:28,019 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:13:28" (1/1) ... [2024-10-23 22:13:28,038 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 22:13:28,226 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/digits_for.c[315,328] [2024-10-23 22:13:28,248 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 22:13:28,263 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 22:13:28,275 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/digits_for.c[315,328] [2024-10-23 22:13:28,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 22:13:28,306 INFO L204 MainTranslator]: Completed translation [2024-10-23 22:13:28,306 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:28 WrapperNode [2024-10-23 22:13:28,307 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 22:13:28,308 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 22:13:28,308 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 22:13:28,308 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 22:13:28,316 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:28" (1/1) ... [2024-10-23 22:13:28,327 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:28" (1/1) ... [2024-10-23 22:13:28,344 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 32 [2024-10-23 22:13:28,344 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 22:13:28,346 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 22:13:28,346 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 22:13:28,346 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 22:13:28,356 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:28" (1/1) ... [2024-10-23 22:13:28,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:28" (1/1) ... [2024-10-23 22:13:28,358 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:28" (1/1) ... [2024-10-23 22:13:28,378 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]. [2024-10-23 22:13:28,378 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:28" (1/1) ... [2024-10-23 22:13:28,378 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:28" (1/1) ... [2024-10-23 22:13:28,385 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:28" (1/1) ... [2024-10-23 22:13:28,410 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:28" (1/1) ... [2024-10-23 22:13:28,411 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:28" (1/1) ... [2024-10-23 22:13:28,416 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:28" (1/1) ... [2024-10-23 22:13:28,419 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 22:13:28,422 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 22:13:28,423 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 22:13:28,423 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 22:13:28,424 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:28" (1/1) ... [2024-10-23 22:13:28,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 22:13:28,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:13:28,458 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) [2024-10-23 22:13:28,465 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 [2024-10-23 22:13:28,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 22:13:28,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 22:13:28,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 22:13:28,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-23 22:13:28,594 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 22:13:28,597 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 22:13:32,838 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-10-23 22:13:32,839 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 22:13:32,873 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 22:13:32,873 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 22:13:32,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:13:32 BoogieIcfgContainer [2024-10-23 22:13:32,874 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 22:13:32,876 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 22:13:32,876 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 22:13:32,880 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 22:13:32,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:13:28" (1/3) ... [2024-10-23 22:13:32,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8ab6327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:13:32, skipping insertion in model container [2024-10-23 22:13:32,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:28" (2/3) ... [2024-10-23 22:13:32,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8ab6327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:13:32, skipping insertion in model container [2024-10-23 22:13:32,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:13:32" (3/3) ... [2024-10-23 22:13:32,885 INFO L112 eAbstractionObserver]: Analyzing ICFG digits_for.c [2024-10-23 22:13:32,903 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 22:13:32,904 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 22:13:32,966 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 22:13:32,974 INFO L333 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, 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;@42aae07a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 22:13:32,975 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 22:13:32,980 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:13:32,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-23 22:13:32,987 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:13:32,988 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-23 22:13:32,988 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:13:32,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:13:32,995 INFO L85 PathProgramCache]: Analyzing trace with hash 59359658, now seen corresponding path program 1 times [2024-10-23 22:13:33,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-23 22:13:33,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183466897] [2024-10-23 22:13:33,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:13:33,011 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 [2024-10-23 22:13:33,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-23 22:13:33,015 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) [2024-10-23 22:13:33,017 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 [2024-10-23 22:13:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:13:33,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 22:13:33,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:13:33,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 22:13:33,215 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 22:13:33,216 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-23 22:13:33,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183466897] [2024-10-23 22:13:33,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1183466897] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 22:13:33,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 22:13:33,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 22:13:33,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169800477] [2024-10-23 22:13:33,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:13:33,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 22:13:33,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-23 22:13:33,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 22:13:33,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 22:13:33,258 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:13:36,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.56s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-23 22:13:38,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-23 22:13:38,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:13:38,346 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2024-10-23 22:13:38,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 22:13:38,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-10-23 22:13:38,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:13:38,354 INFO L225 Difference]: With dead ends: 15 [2024-10-23 22:13:38,354 INFO L226 Difference]: Without dead ends: 7 [2024-10-23 22:13:38,356 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 22:13:38,362 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-10-23 22:13:38,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-10-23 22:13:38,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2024-10-23 22:13:38,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2024-10-23 22:13:38,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:13:38,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2024-10-23 22:13:38,384 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2024-10-23 22:13:38,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:13:38,384 INFO L471 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2024-10-23 22:13:38,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:13:38,384 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2024-10-23 22:13:38,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-23 22:13:38,385 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:13:38,385 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-23 22:13:38,391 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 [2024-10-23 22:13:38,588 WARN L453 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 [2024-10-23 22:13:38,589 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:13:38,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:13:38,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1861149129, now seen corresponding path program 1 times [2024-10-23 22:13:38,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-23 22:13:38,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [708763838] [2024-10-23 22:13:38,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:13:38,591 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 [2024-10-23 22:13:38,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-23 22:13:38,594 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) [2024-10-23 22:13:38,596 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 [2024-10-23 22:13:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:13:39,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 22:13:39,078 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:13:41,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 22:13:41,032 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:13:49,344 WARN L286 SmtUtils]: Spent 8.09s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-10-23 22:13:53,383 WARN L851 $PredicateComparison]: unable to prove that (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32))) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from false [2024-10-23 22:13:57,427 WARN L873 $PredicateComparison]: unable to prove that (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32))) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from true [2024-10-23 22:13:57,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-10-23 22:13:57,431 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-23 22:13:57,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [708763838] [2024-10-23 22:13:57,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [708763838] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 22:13:57,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:13:57,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2024-10-23 22:13:57,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851044335] [2024-10-23 22:13:57,432 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-23 22:13:57,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-23 22:13:57,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-23 22:13:57,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-23 22:13:57,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=11, Unknown=2, NotChecked=6, Total=30 [2024-10-23 22:13:57,435 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:14:08,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.29s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-23 22:14:10,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-23 22:14:14,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-23 22:14:18,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-23 22:14:22,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-23 22:14:26,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-23 22:14:30,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-23 22:14:34,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-23 22:14:34,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:14:34,659 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2024-10-23 22:14:34,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 22:14:34,724 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-10-23 22:14:34,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:14:34,724 INFO L225 Difference]: With dead ends: 12 [2024-10-23 22:14:34,724 INFO L226 Difference]: Without dead ends: 8 [2024-10-23 22:14:34,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=11, Invalid=11, Unknown=2, NotChecked=6, Total=30 [2024-10-23 22:14:34,726 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 29.5s IncrementalHoareTripleChecker+Time [2024-10-23 22:14:34,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 6 Unknown, 7 Unchecked, 29.5s Time] [2024-10-23 22:14:34,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2024-10-23 22:14:34,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2024-10-23 22:14:34,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:14:34,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2024-10-23 22:14:34,730 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2024-10-23 22:14:34,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:14:34,730 INFO L471 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2024-10-23 22:14:34,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:14:34,730 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2024-10-23 22:14:34,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-23 22:14:34,731 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:14:34,731 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2024-10-23 22:14:34,751 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 [2024-10-23 22:14:34,931 WARN L453 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 [2024-10-23 22:14:34,932 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:14:34,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:14:34,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1882047882, now seen corresponding path program 2 times [2024-10-23 22:14:34,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-23 22:14:34,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1824066274] [2024-10-23 22:14:34,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-23 22:14:34,934 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-23 22:14:34,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-23 22:14:34,935 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) [2024-10-23 22:14:34,936 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 [2024-10-23 22:14:35,781 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-23 22:14:35,781 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 22:14:35,827 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-23 22:14:35,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:14:45,336 WARN L286 SmtUtils]: Spent 8.23s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-10-23 22:14:49,402 WARN L873 $PredicateComparison]: unable to prove that (and (= (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (let ((.cse2 ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero .cse2))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero .cse0)))))) |c_ULTIMATE.start_main_~x~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2024-10-23 22:14:49,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-10-23 22:14:49,408 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:14:57,645 WARN L286 SmtUtils]: Spent 8.09s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-10-23 22:15:01,686 WARN L851 $PredicateComparison]: unable to prove that (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32))) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from false [2024-10-23 22:15:05,723 WARN L873 $PredicateComparison]: unable to prove that (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32))) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from true