./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 497906435138d6e8ed86f6117a3a5c3feed8c22116354c349b2936471319931d --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 18:31:11,623 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 18:31:11,657 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 18:31:11,660 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 18:31:11,661 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 18:31:11,681 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 18:31:11,681 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 18:31:11,681 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 18:31:11,682 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 18:31:11,682 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 18:31:11,682 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 18:31:11,682 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 18:31:11,682 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 18:31:11,682 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 18:31:11,682 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 18:31:11,682 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 18:31:11,682 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 18:31:11,682 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 18:31:11,682 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 18:31:11,684 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 18:31:11,684 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 18:31:11,684 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 18:31:11,684 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 18:31:11,684 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 18:31:11,685 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 18:31:11,685 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 18:31:11,685 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 18:31:11,685 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 18:31:11,685 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 18:31:11,685 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 18:31:11,685 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 18:31:11,685 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 18:31:11,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 18:31:11,686 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 18:31:11,686 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 18:31:11,686 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 18:31:11,686 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 18:31:11,686 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 18:31:11,686 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 18:31:11,686 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 18:31:11,686 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 18:31:11,686 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 18:31:11,686 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 18:31:11,686 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> 497906435138d6e8ed86f6117a3a5c3feed8c22116354c349b2936471319931d [2025-02-07 18:31:11,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 18:31:11,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 18:31:11,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 18:31:11,893 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 18:31:11,893 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 18:31:11,894 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i [2025-02-07 18:31:13,034 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/252c7d33b/e05bf608a6f44e31a8b6daac4122601f/FLAG705097453 [2025-02-07 18:31:13,282 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 18:31:13,283 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i [2025-02-07 18:31:13,288 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/252c7d33b/e05bf608a6f44e31a8b6daac4122601f/FLAG705097453 [2025-02-07 18:31:13,301 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/252c7d33b/e05bf608a6f44e31a8b6daac4122601f [2025-02-07 18:31:13,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 18:31:13,304 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 18:31:13,305 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 18:31:13,305 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 18:31:13,307 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 18:31:13,308 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 06:31:13" (1/1) ... [2025-02-07 18:31:13,308 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60e5e813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:13, skipping insertion in model container [2025-02-07 18:31:13,309 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 06:31:13" (1/1) ... [2025-02-07 18:31:13,319 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 18:31:13,410 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i[807,820] [2025-02-07 18:31:13,416 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 18:31:13,421 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 18:31:13,428 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i[807,820] [2025-02-07 18:31:13,429 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 18:31:13,438 INFO L204 MainTranslator]: Completed translation [2025-02-07 18:31:13,438 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:13 WrapperNode [2025-02-07 18:31:13,438 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 18:31:13,439 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 18:31:13,439 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 18:31:13,439 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 18:31:13,443 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:13" (1/1) ... [2025-02-07 18:31:13,447 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:13" (1/1) ... [2025-02-07 18:31:13,455 INFO L138 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 22 [2025-02-07 18:31:13,455 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 18:31:13,456 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 18:31:13,456 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 18:31:13,456 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 18:31:13,460 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:13" (1/1) ... [2025-02-07 18:31:13,460 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:13" (1/1) ... [2025-02-07 18:31:13,461 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:13" (1/1) ... [2025-02-07 18:31:13,466 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]. [2025-02-07 18:31:13,466 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:13" (1/1) ... [2025-02-07 18:31:13,466 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:13" (1/1) ... [2025-02-07 18:31:13,468 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:13" (1/1) ... [2025-02-07 18:31:13,468 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:13" (1/1) ... [2025-02-07 18:31:13,468 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:13" (1/1) ... [2025-02-07 18:31:13,469 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:13" (1/1) ... [2025-02-07 18:31:13,469 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 18:31:13,470 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 18:31:13,470 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 18:31:13,470 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 18:31:13,471 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:13" (1/1) ... [2025-02-07 18:31:13,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 18:31:13,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 18:31:13,492 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-07 18:31:13,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-07 18:31:13,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 18:31:13,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 18:31:13,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 18:31:13,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 18:31:13,546 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 18:31:13,547 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 18:31:13,611 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2025-02-07 18:31:13,612 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 18:31:13,617 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 18:31:13,617 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 18:31:13,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 06:31:13 BoogieIcfgContainer [2025-02-07 18:31:13,617 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 18:31:13,619 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 18:31:13,619 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 18:31:13,622 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 18:31:13,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 06:31:13" (1/3) ... [2025-02-07 18:31:13,623 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38995915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 06:31:13, skipping insertion in model container [2025-02-07 18:31:13,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:13" (2/3) ... [2025-02-07 18:31:13,623 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38995915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 06:31:13, skipping insertion in model container [2025-02-07 18:31:13,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 06:31:13" (3/3) ... [2025-02-07 18:31:13,624 INFO L128 eAbstractionObserver]: Analyzing ICFG Float_div_bad.i [2025-02-07 18:31:13,633 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 18:31:13,634 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Float_div_bad.i that has 1 procedures, 8 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-07 18:31:13,662 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 18:31:13,669 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;@b5b70ce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 18:31:13,670 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 18:31:13,672 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 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) [2025-02-07 18:31:13,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-07 18:31:13,675 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 18:31:13,675 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-07 18:31:13,675 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 18:31:13,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 18:31:13,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1136958, now seen corresponding path program 1 times [2025-02-07 18:31:13,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 18:31:13,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124723101] [2025-02-07 18:31:13,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 18:31:13,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 18:31:13,725 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-07 18:31:13,742 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-07 18:31:13,743 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 18:31:13,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-07 18:31:13,743 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-07 18:31:13,745 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-07 18:31:13,752 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-07 18:31:13,753 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 18:31:13,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-07 18:31:13,768 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-07 18:31:13,769 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-07 18:31:13,770 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-02-07 18:31:13,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-07 18:31:13,775 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-02-07 18:31:13,783 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-07 18:31:13,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 06:31:13 BoogieIcfgContainer [2025-02-07 18:31:13,788 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-07 18:31:13,788 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-07 18:31:13,789 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-07 18:31:13,789 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-07 18:31:13,789 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 06:31:13" (3/4) ... [2025-02-07 18:31:13,791 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-07 18:31:13,791 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-07 18:31:13,792 INFO L158 Benchmark]: Toolchain (without parser) took 488.55ms. Allocated memory is still 167.8MB. Free memory was 132.3MB in the beginning and 97.4MB in the end (delta: 34.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-02-07 18:31:13,792 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 209.7MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 18:31:13,793 INFO L158 Benchmark]: CACSL2BoogieTranslator took 134.06ms. Allocated memory is still 167.8MB. Free memory was 132.3MB in the beginning and 121.7MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-07 18:31:13,793 INFO L158 Benchmark]: Boogie Procedure Inliner took 16.17ms. Allocated memory is still 167.8MB. Free memory was 121.7MB in the beginning and 120.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 18:31:13,793 INFO L158 Benchmark]: Boogie Preprocessor took 13.82ms. Allocated memory is still 167.8MB. Free memory was 120.4MB in the beginning and 119.6MB in the end (delta: 841.3kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 18:31:13,793 INFO L158 Benchmark]: IcfgBuilder took 147.42ms. Allocated memory is still 167.8MB. Free memory was 119.6MB in the beginning and 109.7MB in the end (delta: 9.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-07 18:31:13,794 INFO L158 Benchmark]: TraceAbstraction took 169.32ms. Allocated memory is still 167.8MB. Free memory was 109.2MB in the beginning and 97.8MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-07 18:31:13,794 INFO L158 Benchmark]: Witness Printer took 2.99ms. Allocated memory is still 167.8MB. Free memory was 97.8MB in the beginning and 97.8MB in the end (delta: 12.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 18:31:13,795 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 209.7MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 134.06ms. Allocated memory is still 167.8MB. Free memory was 132.3MB in the beginning and 121.7MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 16.17ms. Allocated memory is still 167.8MB. Free memory was 121.7MB in the beginning and 120.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 13.82ms. Allocated memory is still 167.8MB. Free memory was 120.4MB in the beginning and 119.6MB in the end (delta: 841.3kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 147.42ms. Allocated memory is still 167.8MB. Free memory was 119.6MB in the beginning and 109.7MB in the end (delta: 9.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 169.32ms. Allocated memory is still 167.8MB. Free memory was 109.2MB in the beginning and 97.8MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Witness Printer took 2.99ms. Allocated memory is still 167.8MB. Free memory was 97.8MB in the beginning and 97.8MB in the end (delta: 12.6kB). 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: 13]: 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 someBinaryFLOATComparisonOperation at line 23, overapproximation of someBinaryArithmeticFLOAToperation at line 21. Possible FailurePath: [L20] float x = 1.0f; [L21] float x1 = x/1.6f; [L23] COND FALSE !(x1 != x) [L29] CALL __VERIFIER_assert(x == 0) [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, 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, 4 NumberOfCodeBlocks, 4 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, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-02-07 18:31:13,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, 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/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 497906435138d6e8ed86f6117a3a5c3feed8c22116354c349b2936471319931d --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 18:31:15,609 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 18:31:15,692 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2025-02-07 18:31:15,696 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 18:31:15,700 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 18:31:15,724 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 18:31:15,724 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 18:31:15,726 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 18:31:15,726 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 18:31:15,726 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 18:31:15,726 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 18:31:15,726 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 18:31:15,726 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 18:31:15,726 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 18:31:15,727 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 18:31:15,727 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 18:31:15,727 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 18:31:15,727 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 18:31:15,728 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 18:31:15,728 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 18:31:15,728 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 18:31:15,728 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 18:31:15,728 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 18:31:15,728 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-07 18:31:15,728 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-07 18:31:15,728 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-07 18:31:15,728 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 18:31:15,729 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 18:31:15,729 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 18:31:15,729 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 18:31:15,729 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 18:31:15,730 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 18:31:15,730 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 18:31:15,730 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 18:31:15,730 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 18:31:15,730 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 18:31:15,730 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 18:31:15,730 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 18:31:15,730 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 18:31:15,730 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-07 18:31:15,730 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-07 18:31:15,730 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 18:31:15,731 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 18:31:15,731 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 18:31:15,731 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 18:31:15,731 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> 497906435138d6e8ed86f6117a3a5c3feed8c22116354c349b2936471319931d [2025-02-07 18:31:15,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 18:31:16,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 18:31:16,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 18:31:16,002 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 18:31:16,002 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 18:31:16,003 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i [2025-02-07 18:31:17,178 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c881dca20/27d451e28ec64fa7a924c935e22ab5df/FLAGe78d71ba6 [2025-02-07 18:31:17,377 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 18:31:17,378 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i [2025-02-07 18:31:17,391 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c881dca20/27d451e28ec64fa7a924c935e22ab5df/FLAGe78d71ba6 [2025-02-07 18:31:17,760 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c881dca20/27d451e28ec64fa7a924c935e22ab5df [2025-02-07 18:31:17,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 18:31:17,763 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 18:31:17,764 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 18:31:17,765 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 18:31:17,767 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 18:31:17,768 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 06:31:17" (1/1) ... [2025-02-07 18:31:17,769 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79a58a9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:17, skipping insertion in model container [2025-02-07 18:31:17,769 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 06:31:17" (1/1) ... [2025-02-07 18:31:17,778 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 18:31:17,903 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i[807,820] [2025-02-07 18:31:17,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 18:31:17,926 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 18:31:17,945 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i[807,820] [2025-02-07 18:31:17,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 18:31:17,971 INFO L204 MainTranslator]: Completed translation [2025-02-07 18:31:17,975 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:17 WrapperNode [2025-02-07 18:31:17,975 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 18:31:17,976 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 18:31:17,976 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 18:31:17,976 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 18:31:17,986 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:17" (1/1) ... [2025-02-07 18:31:17,998 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:17" (1/1) ... [2025-02-07 18:31:18,008 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 23 [2025-02-07 18:31:18,009 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 18:31:18,010 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 18:31:18,010 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 18:31:18,010 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 18:31:18,015 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:17" (1/1) ... [2025-02-07 18:31:18,016 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:17" (1/1) ... [2025-02-07 18:31:18,018 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:17" (1/1) ... [2025-02-07 18:31:18,025 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]. [2025-02-07 18:31:18,028 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:17" (1/1) ... [2025-02-07 18:31:18,029 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:17" (1/1) ... [2025-02-07 18:31:18,033 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:17" (1/1) ... [2025-02-07 18:31:18,035 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:17" (1/1) ... [2025-02-07 18:31:18,036 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:17" (1/1) ... [2025-02-07 18:31:18,037 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:17" (1/1) ... [2025-02-07 18:31:18,039 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 18:31:18,041 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 18:31:18,041 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 18:31:18,041 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 18:31:18,042 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:17" (1/1) ... [2025-02-07 18:31:18,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 18:31:18,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 18:31:18,064 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-07 18:31:18,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-07 18:31:18,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 18:31:18,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-07 18:31:18,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 18:31:18,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 18:31:18,135 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 18:31:18,137 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 18:31:18,508 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2025-02-07 18:31:18,509 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 18:31:18,516 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 18:31:18,517 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 18:31:18,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 06:31:18 BoogieIcfgContainer [2025-02-07 18:31:18,517 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 18:31:18,523 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 18:31:18,523 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 18:31:18,530 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 18:31:18,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 06:31:17" (1/3) ... [2025-02-07 18:31:18,531 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@166cbb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 06:31:18, skipping insertion in model container [2025-02-07 18:31:18,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:17" (2/3) ... [2025-02-07 18:31:18,531 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@166cbb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 06:31:18, skipping insertion in model container [2025-02-07 18:31:18,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 06:31:18" (3/3) ... [2025-02-07 18:31:18,536 INFO L128 eAbstractionObserver]: Analyzing ICFG Float_div_bad.i [2025-02-07 18:31:18,551 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 18:31:18,552 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Float_div_bad.i that has 1 procedures, 8 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-07 18:31:18,592 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 18:31:18,604 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;@3fff0b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 18:31:18,604 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 18:31:18,607 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 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) [2025-02-07 18:31:18,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-07 18:31:18,610 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 18:31:18,610 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-07 18:31:18,610 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 18:31:18,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 18:31:18,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1136958, now seen corresponding path program 1 times [2025-02-07 18:31:18,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-07 18:31:18,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002968348] [2025-02-07 18:31:18,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 18:31:18,620 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 [2025-02-07 18:31:18,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2025-02-07 18:31:18,623 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/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) [2025-02-07 18:31:18,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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 [2025-02-07 18:31:18,654 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-07 18:31:18,782 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-07 18:31:18,783 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 18:31:18,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 18:31:18,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-07 18:31:18,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 18:31:19,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 18:31:19,004 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 18:31:19,004 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-07 18:31:19,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002968348] [2025-02-07 18:31:19,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002968348] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 18:31:19,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 18:31:19,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-07 18:31:19,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135764132] [2025-02-07 18:31:19,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 18:31:19,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-07 18:31:19,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-07 18:31:19,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-07 18:31:19,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 18:31:19,022 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 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) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2025-02-07 18:31:19,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 18:31:19,731 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2025-02-07 18:31:19,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-07 18:31:19,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2025-02-07 18:31:19,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 18:31:19,738 INFO L225 Difference]: With dead ends: 15 [2025-02-07 18:31:19,739 INFO L226 Difference]: Without dead ends: 6 [2025-02-07 18:31:19,740 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 18:31:19,742 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-07 18:31:19,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-07 18:31:19,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2025-02-07 18:31:19,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2025-02-07 18:31:19,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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) [2025-02-07 18:31:19,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2025-02-07 18:31:19,762 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2025-02-07 18:31:19,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 18:31:19,762 INFO L471 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2025-02-07 18:31:19,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2025-02-07 18:31:19,763 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2025-02-07 18:31:19,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-02-07 18:31:19,763 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 18:31:19,763 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-02-07 18:31:19,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2025-02-07 18:31:19,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/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 [2025-02-07 18:31:19,967 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 18:31:19,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 18:31:19,968 INFO L85 PathProgramCache]: Analyzing trace with hash 35277444, now seen corresponding path program 1 times [2025-02-07 18:31:19,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-07 18:31:19,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [396302273] [2025-02-07 18:31:19,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 18:31:19,969 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 [2025-02-07 18:31:19,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2025-02-07 18:31:19,972 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/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) [2025-02-07 18:31:19,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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 [2025-02-07 18:31:19,997 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-07 18:31:20,236 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-07 18:31:20,236 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 18:31:20,236 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 18:31:20,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-07 18:31:20,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 18:31:21,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 18:31:21,285 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 18:31:25,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 18:31:25,319 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-07 18:31:25,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [396302273] [2025-02-07 18:31:25,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [396302273] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 18:31:25,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-07 18:31:25,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2025-02-07 18:31:25,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515441875] [2025-02-07 18:31:25,319 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-07 18:31:25,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-07 18:31:25,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-07 18:31:25,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-07 18:31:25,320 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-07 18:31:25,320 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 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) [2025-02-07 18:31:36,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-07 18:31:41,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-07 18:31:44,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.09s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-07 18:31:48,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-07 18:31:48,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 18:31:48,583 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2025-02-07 18:31:48,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-07 18:31:48,609 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 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) Word has length 5 [2025-02-07 18:31:48,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 18:31:48,609 INFO L225 Difference]: With dead ends: 12 [2025-02-07 18:31:48,609 INFO L226 Difference]: Without dead ends: 9 [2025-02-07 18:31:48,610 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2025-02-07 18:31:48,610 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2025-02-07 18:31:48,610 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 3 Unknown, 0 Unchecked, 17.2s Time] [2025-02-07 18:31:48,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2025-02-07 18:31:48,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2025-02-07 18:31:48,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 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) [2025-02-07 18:31:48,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2025-02-07 18:31:48,612 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2025-02-07 18:31:48,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 18:31:48,612 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2025-02-07 18:31:48,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 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) [2025-02-07 18:31:48,612 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2025-02-07 18:31:48,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-07 18:31:48,612 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 18:31:48,612 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2025-02-07 18:31:48,624 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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 [2025-02-07 18:31:48,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/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 [2025-02-07 18:31:48,816 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 18:31:48,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 18:31:48,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1285129538, now seen corresponding path program 2 times [2025-02-07 18:31:48,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-07 18:31:48,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780624564] [2025-02-07 18:31:48,824 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 18:31:48,824 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 [2025-02-07 18:31:48,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2025-02-07 18:31:48,826 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/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) [2025-02-07 18:31:48,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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 [2025-02-07 18:31:48,851 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 8 statements into 2 equivalence classes. [2025-02-07 18:31:49,456 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 8 of 8 statements. [2025-02-07 18:31:49,456 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 18:31:49,456 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 18:31:49,478 WARN L254 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-07 18:31:49,481 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 18:32:19,142 WARN L286 SmtUtils]: Spent 7.87s 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) [2025-02-07 18:32:23,276 WARN L873 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= |c_ULTIMATE.start_main_~x1~0#1| (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 8.0 5.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0)))) is different from true [2025-02-07 18:32:31,989 WARN L286 SmtUtils]: Spent 8.32s 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) [2025-02-07 18:32:36,207 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 8.0 5.0)))) (and (= |c_ULTIMATE.start_main_~x~0#1| (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0)) (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse0)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2025-02-07 18:32:36,239 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2025-02-07 18:32:36,239 INFO L312 TraceCheckSpWp]: Computing backward predicates...