./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_0670.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_0670.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 ef3aead09e1d04146222ba824ba5fd2f951ea3a53aa52ba41e6fea5dd6ebb3d5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 11:58:22,634 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 11:58:22,687 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 11:58:22,692 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 11:58:22,693 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 11:58:22,712 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 11:58:22,713 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 11:58:22,714 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 11:58:22,714 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 11:58:22,714 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 11:58:22,715 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 11:58:22,715 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 11:58:22,715 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 11:58:22,715 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 11:58:22,715 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 11:58:22,716 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 11:58:22,716 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 11:58:22,716 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 11:58:22,716 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 11:58:22,716 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 11:58:22,716 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 11:58:22,716 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 11:58:22,716 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 11:58:22,717 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 11:58:22,717 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 11:58:22,717 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 11:58:22,717 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 11:58:22,717 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 11:58:22,717 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 11:58:22,717 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 11:58:22,717 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 11:58:22,717 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 11:58:22,717 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 11:58:22,718 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 11:58:22,718 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 11:58:22,718 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 11:58:22,718 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 11:58:22,718 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 11:58:22,718 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 11:58:22,718 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 11:58:22,718 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 11:58:22,718 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 11:58:22,718 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 11:58:22,718 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/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 -> ef3aead09e1d04146222ba824ba5fd2f951ea3a53aa52ba41e6fea5dd6ebb3d5 [2025-03-03 11:58:22,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 11:58:22,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 11:58:22,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 11:58:22,964 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 11:58:22,964 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 11:58:22,965 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0670.c [2025-03-03 11:58:24,070 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be845ca53/e96b813a6a6f43f8b90173b4c6a63627/FLAGe17d379a5 [2025-03-03 11:58:24,328 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 11:58:24,328 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0670.c [2025-03-03 11:58:24,337 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be845ca53/e96b813a6a6f43f8b90173b4c6a63627/FLAGe17d379a5 [2025-03-03 11:58:24,657 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be845ca53/e96b813a6a6f43f8b90173b4c6a63627 [2025-03-03 11:58:24,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 11:58:24,660 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 11:58:24,662 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 11:58:24,662 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 11:58:24,665 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 11:58:24,666 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 11:58:24" (1/1) ... [2025-03-03 11:58:24,666 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d8842ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:58:24, skipping insertion in model container [2025-03-03 11:58:24,667 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 11:58:24" (1/1) ... [2025-03-03 11:58:24,682 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 11:58:24,806 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0670.c[5373,5386] [2025-03-03 11:58:24,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 11:58:24,815 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 11:58:24,840 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0670.c[5373,5386] [2025-03-03 11:58:24,840 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 11:58:24,858 INFO L204 MainTranslator]: Completed translation [2025-03-03 11:58:24,860 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:58:24 WrapperNode [2025-03-03 11:58:24,860 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 11:58:24,861 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 11:58:24,861 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 11:58:24,861 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 11:58:24,866 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:58:24" (1/1) ... [2025-03-03 11:58:24,880 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:58:24" (1/1) ... [2025-03-03 11:58:24,906 INFO L138 Inliner]: procedures = 21, calls = 82, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 258 [2025-03-03 11:58:24,906 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 11:58:24,906 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 11:58:24,906 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 11:58:24,906 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 11:58:24,922 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:58:24" (1/1) ... [2025-03-03 11:58:24,922 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:58:24" (1/1) ... [2025-03-03 11:58:24,927 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:58:24" (1/1) ... [2025-03-03 11:58:24,933 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2025-03-03 11:58:24,933 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:58:24" (1/1) ... [2025-03-03 11:58:24,934 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:58:24" (1/1) ... [2025-03-03 11:58:24,948 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:58:24" (1/1) ... [2025-03-03 11:58:24,949 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:58:24" (1/1) ... [2025-03-03 11:58:24,950 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:58:24" (1/1) ... [2025-03-03 11:58:24,951 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:58:24" (1/1) ... [2025-03-03 11:58:24,958 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 11:58:24,959 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 11:58:24,959 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 11:58:24,959 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 11:58:24,960 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:58:24" (1/1) ... [2025-03-03 11:58:24,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 11:58:24,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 11:58:24,990 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) [2025-03-03 11:58:24,992 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 [2025-03-03 11:58:25,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 11:58:25,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-03 11:58:25,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2025-03-03 11:58:25,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-03 11:58:25,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2025-03-03 11:58:25,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-03-03 11:58:25,011 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2025-03-03 11:58:25,011 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2025-03-03 11:58:25,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2025-03-03 11:58:25,012 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2025-03-03 11:58:25,012 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2025-03-03 11:58:25,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 11:58:25,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 11:58:25,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-03-03 11:58:25,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2025-03-03 11:58:25,012 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2025-03-03 11:58:25,012 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2025-03-03 11:58:25,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-03 11:58:25,091 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 11:58:25,092 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 11:58:25,424 INFO L? ?]: Removed 70 outVars from TransFormulas that were not future-live. [2025-03-03 11:58:25,424 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 11:58:25,437 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 11:58:25,438 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 11:58:25,438 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 11:58:25 BoogieIcfgContainer [2025-03-03 11:58:25,438 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 11:58:25,440 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 11:58:25,440 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 11:58:25,444 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 11:58:25,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 11:58:24" (1/3) ... [2025-03-03 11:58:25,445 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73065252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 11:58:25, skipping insertion in model container [2025-03-03 11:58:25,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:58:24" (2/3) ... [2025-03-03 11:58:25,445 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73065252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 11:58:25, skipping insertion in model container [2025-03-03 11:58:25,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 11:58:25" (3/3) ... [2025-03-03 11:58:25,447 INFO L128 eAbstractionObserver]: Analyzing ICFG float_req_bl_0670.c [2025-03-03 11:58:25,457 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 11:58:25,458 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG float_req_bl_0670.c that has 4 procedures, 110 locations, 1 initial locations, 7 loop locations, and 8 error locations. [2025-03-03 11:58:25,497 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 11:58:25,504 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;@13c855b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 11:58:25,505 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2025-03-03 11:58:25,507 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 91 states have (on average 1.7802197802197801) internal successors, (162), 99 states have internal predecessors, (162), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-03 11:58:25,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-03 11:58:25,512 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:58:25,512 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:58:25,512 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONUNSUPPORTED_FEATURE === [fabs_floatErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE, fabs_floatErr1ASSERT_VIOLATIONUNSUPPORTED_FEATURE, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2025-03-03 11:58:25,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:58:25,517 INFO L85 PathProgramCache]: Analyzing trace with hash 826004732, now seen corresponding path program 1 times [2025-03-03 11:58:25,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 11:58:25,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350507529] [2025-03-03 11:58:25,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:58:25,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 11:58:25,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-03 11:58:25,631 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-03 11:58:25,633 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:58:25,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-03 11:58:25,634 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-03 11:58:25,641 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-03 11:58:25,660 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-03 11:58:25,661 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:58:25,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-03 11:58:25,684 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-03 11:58:25,686 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-03 11:58:25,686 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONUNSUPPORTED_FEATURE (7 of 8 remaining) [2025-03-03 11:58:25,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location fabs_floatErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE (6 of 8 remaining) [2025-03-03 11:58:25,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location fabs_floatErr1ASSERT_VIOLATIONUNSUPPORTED_FEATURE (5 of 8 remaining) [2025-03-03 11:58:25,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2025-03-03 11:58:25,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONUNSUPPORTED_FEATURE (3 of 8 remaining) [2025-03-03 11:58:25,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONUNSUPPORTED_FEATURE (2 of 8 remaining) [2025-03-03 11:58:25,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONUNSUPPORTED_FEATURE (1 of 8 remaining) [2025-03-03 11:58:25,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location atan_floatErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE (0 of 8 remaining) [2025-03-03 11:58:25,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 11:58:25,691 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-03 11:58:25,710 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-03 11:58:25,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 11:58:25 BoogieIcfgContainer [2025-03-03 11:58:25,712 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-03 11:58:25,713 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-03 11:58:25,713 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-03 11:58:25,713 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-03 11:58:25,713 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 11:58:25" (3/4) ... [2025-03-03 11:58:25,715 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-03 11:58:25,715 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-03 11:58:25,716 INFO L158 Benchmark]: Toolchain (without parser) took 1056.23ms. Allocated memory is still 142.6MB. Free memory was 109.7MB in the beginning and 40.7MB in the end (delta: 69.1MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2025-03-03 11:58:25,716 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory was 126.6MB in the beginning and 126.3MB in the end (delta: 307.7kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 11:58:25,717 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.01ms. Allocated memory is still 142.6MB. Free memory was 109.7MB in the beginning and 95.2MB in the end (delta: 14.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-03 11:58:25,717 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.74ms. Allocated memory is still 142.6MB. Free memory was 95.2MB in the beginning and 93.1MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 11:58:25,717 INFO L158 Benchmark]: Boogie Preprocessor took 52.20ms. Allocated memory is still 142.6MB. Free memory was 93.1MB in the beginning and 91.0MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 11:58:25,717 INFO L158 Benchmark]: IcfgBuilder took 479.05ms. Allocated memory is still 142.6MB. Free memory was 91.0MB in the beginning and 63.8MB in the end (delta: 27.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-03 11:58:25,717 INFO L158 Benchmark]: TraceAbstraction took 272.41ms. Allocated memory is still 142.6MB. Free memory was 63.8MB in the beginning and 40.7MB in the end (delta: 23.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-03 11:58:25,719 INFO L158 Benchmark]: Witness Printer took 2.63ms. Allocated memory is still 142.6MB. Free memory is still 40.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 11:58:25,720 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory was 126.6MB in the beginning and 126.3MB in the end (delta: 307.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 199.01ms. Allocated memory is still 142.6MB. Free memory was 109.7MB in the beginning and 95.2MB in the end (delta: 14.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.74ms. Allocated memory is still 142.6MB. Free memory was 95.2MB in the beginning and 93.1MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 52.20ms. Allocated memory is still 142.6MB. Free memory was 93.1MB in the beginning and 91.0MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 479.05ms. Allocated memory is still 142.6MB. Free memory was 91.0MB in the beginning and 63.8MB in the end (delta: 27.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 272.41ms. Allocated memory is still 142.6MB. Free memory was 63.8MB in the beginning and 40.7MB in the end (delta: 23.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 2.63ms. Allocated memory is still 142.6MB. Free memory is still 40.7MB. 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: 128]: Unable to prove that there are no unsupported features in the program Unable to prove that there are no unsupported features in the program Reason: overapproximation of union with floats in the HoenickeLindenmann_Original memory model at line 128, overapproximation of someBinaryFLOATComparisonOperation at line 15, overapproximation of someUnaryDOUBLEoperation at line 47. Possible FailurePath: [L32-L37] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L39-L44] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L46-L50] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L52-L54] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; [L120-L121] static const float tiny_atan2 = 1.0e-30, zero_atan2 = 0.0, pi_lo_atan2 = -8.7422776573e-08; VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, zero_atan2=0] [L226] float x = __VERIFIER_nondet_float(); [L227] float y = __VERIFIER_nondet_float(); [L229] CALL, EXPR isnan_float(x) VAL [\old(x)=1000000000000000000000000000031, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, zero_atan2=0] [L15] return x != x; VAL [\old(x)=1000000000000000000000000000031, \result=1, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, zero_atan2=0] [L229] RET, EXPR isnan_float(x) VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000031, zero_atan2=0] [L229] isnan_float(x) || isnan_float(y) VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000031, zero_atan2=0] [L229] COND TRUE isnan_float(x) || isnan_float(y) [L232] CALL __ieee754_atan2f(y, x) [L124] float z; [L125] __int32_t k, m, hx, hy, ix, iy; VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, y=1000000000000000000000000000028, zero_atan2=0] [L128] ieee_float_shape_type gf_u; VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, y=1000000000000000000000000000028, zero_atan2=0] - UnprovableResult [Line: 25]: Unable to prove that there are no unsupported features in the program Unable to prove that there are no unsupported features in the program Reason: Not analyzed. - UnprovableResult [Line: 20]: Unable to prove that there are no unsupported features in the program Unable to prove that there are no unsupported features in the program Reason: Not analyzed. - UnprovableResult [Line: 236]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 207]: Unable to prove that there are no unsupported features in the program Unable to prove that there are no unsupported features in the program Reason: Not analyzed. - UnprovableResult [Line: 202]: Unable to prove that there are no unsupported features in the program Unable to prove that there are no unsupported features in the program Reason: Not analyzed. - UnprovableResult [Line: 134]: Unable to prove that there are no unsupported features in the program Unable to prove that there are no unsupported features in the program Reason: Not analyzed. - UnprovableResult [Line: 61]: Unable to prove that there are no unsupported features in the program Unable to prove that there are no unsupported features in the program Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 110 locations, 8 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=110occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 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 [2025-03-03 11:58:25,736 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/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_0670.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 ef3aead09e1d04146222ba824ba5fd2f951ea3a53aa52ba41e6fea5dd6ebb3d5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 11:58:27,565 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 11:58:27,663 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2025-03-03 11:58:27,669 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 11:58:27,671 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 11:58:27,693 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 11:58:27,695 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 11:58:27,695 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 11:58:27,695 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 11:58:27,695 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 11:58:27,696 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 11:58:27,696 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 11:58:27,696 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 11:58:27,696 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 11:58:27,696 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 11:58:27,696 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 11:58:27,696 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 11:58:27,697 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 11:58:27,697 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 11:58:27,697 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 11:58:27,697 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 11:58:27,698 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 11:58:27,698 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 11:58:27,698 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-03 11:58:27,698 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-03 11:58:27,698 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-03 11:58:27,698 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 11:58:27,698 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 11:58:27,698 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 11:58:27,698 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 11:58:27,698 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 11:58:27,698 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 11:58:27,698 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 11:58:27,698 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 11:58:27,698 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 11:58:27,698 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 11:58:27,698 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 11:58:27,698 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 11:58:27,699 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 11:58:27,699 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-03 11:58:27,699 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-03 11:58:27,699 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 11:58:27,699 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 11:58:27,699 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 11:58:27,699 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 11:58:27,699 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/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 -> ef3aead09e1d04146222ba824ba5fd2f951ea3a53aa52ba41e6fea5dd6ebb3d5 [2025-03-03 11:58:27,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 11:58:27,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 11:58:27,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 11:58:27,941 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 11:58:27,941 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 11:58:27,942 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0670.c [2025-03-03 11:58:29,068 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de2c9aff5/b3c2f1d15f934525a7dae49773e21c37/FLAGbe70b82c5 [2025-03-03 11:58:29,276 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 11:58:29,277 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0670.c [2025-03-03 11:58:29,284 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de2c9aff5/b3c2f1d15f934525a7dae49773e21c37/FLAGbe70b82c5 [2025-03-03 11:58:29,638 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de2c9aff5/b3c2f1d15f934525a7dae49773e21c37 [2025-03-03 11:58:29,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 11:58:29,640 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 11:58:29,641 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 11:58:29,641 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 11:58:29,644 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 11:58:29,645 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 11:58:29" (1/1) ... [2025-03-03 11:58:29,645 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67d1547f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:58:29, skipping insertion in model container [2025-03-03 11:58:29,645 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 11:58:29" (1/1) ... [2025-03-03 11:58:29,658 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 11:58:29,798 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0670.c[5373,5386] [2025-03-03 11:58:29,800 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 11:58:29,811 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 11:58:29,844 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0670.c[5373,5386] [2025-03-03 11:58:29,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 11:58:29,868 INFO L204 MainTranslator]: Completed translation [2025-03-03 11:58:29,870 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:58:29 WrapperNode [2025-03-03 11:58:29,870 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 11:58:29,871 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 11:58:29,871 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 11:58:29,871 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 11:58:29,875 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:58:29" (1/1) ... [2025-03-03 11:58:29,889 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:58:29" (1/1) ... [2025-03-03 11:58:29,912 INFO L138 Inliner]: procedures = 24, calls = 82, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 232 [2025-03-03 11:58:29,913 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 11:58:29,913 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 11:58:29,913 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 11:58:29,913 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 11:58:29,921 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:58:29" (1/1) ... [2025-03-03 11:58:29,922 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:58:29" (1/1) ... [2025-03-03 11:58:29,928 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:58:29" (1/1) ... [2025-03-03 11:58:29,945 INFO L175 MemorySlicer]: Split 53 memory accesses to 11 slices as follows [2, 7, 7, 23, 2, 2, 2, 2, 2, 2, 2]. 43 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0]. The 19 writes are split as follows [0, 0, 0, 12, 1, 1, 1, 1, 1, 1, 1]. [2025-03-03 11:58:29,945 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:58:29" (1/1) ... [2025-03-03 11:58:29,945 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:58:29" (1/1) ... [2025-03-03 11:58:29,964 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:58:29" (1/1) ... [2025-03-03 11:58:29,965 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:58:29" (1/1) ... [2025-03-03 11:58:29,971 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:58:29" (1/1) ... [2025-03-03 11:58:29,972 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:58:29" (1/1) ... [2025-03-03 11:58:29,976 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 11:58:29,976 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 11:58:29,976 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 11:58:29,976 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 11:58:29,977 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:58:29" (1/1) ... [2025-03-03 11:58:29,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 11:58:29,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 11:58:30,004 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) [2025-03-03 11:58:30,007 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 [2025-03-03 11:58:30,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 11:58:30,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#0 [2025-03-03 11:58:30,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#1 [2025-03-03 11:58:30,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#2 [2025-03-03 11:58:30,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#3 [2025-03-03 11:58:30,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#4 [2025-03-03 11:58:30,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#5 [2025-03-03 11:58:30,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#6 [2025-03-03 11:58:30,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#7 [2025-03-03 11:58:30,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#8 [2025-03-03 11:58:30,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#9 [2025-03-03 11:58:30,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#10 [2025-03-03 11:58:30,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-03 11:58:30,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-03 11:58:30,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-03 11:58:30,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2025-03-03 11:58:30,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2025-03-03 11:58:30,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2025-03-03 11:58:30,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2025-03-03 11:58:30,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#7 [2025-03-03 11:58:30,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#8 [2025-03-03 11:58:30,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#9 [2025-03-03 11:58:30,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#10 [2025-03-03 11:58:30,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-03 11:58:30,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2025-03-03 11:58:30,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2025-03-03 11:58:30,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2025-03-03 11:58:30,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2025-03-03 11:58:30,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#4 [2025-03-03 11:58:30,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#5 [2025-03-03 11:58:30,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#6 [2025-03-03 11:58:30,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#7 [2025-03-03 11:58:30,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#8 [2025-03-03 11:58:30,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#9 [2025-03-03 11:58:30,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#10 [2025-03-03 11:58:30,026 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2025-03-03 11:58:30,026 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2025-03-03 11:58:30,026 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2025-03-03 11:58:30,026 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2025-03-03 11:58:30,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-03 11:58:30,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-03 11:58:30,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-03 11:58:30,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2025-03-03 11:58:30,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2025-03-03 11:58:30,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2025-03-03 11:58:30,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#6 [2025-03-03 11:58:30,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#7 [2025-03-03 11:58:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#8 [2025-03-03 11:58:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#9 [2025-03-03 11:58:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#10 [2025-03-03 11:58:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4#0 [2025-03-03 11:58:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4#1 [2025-03-03 11:58:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4#2 [2025-03-03 11:58:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4#3 [2025-03-03 11:58:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4#4 [2025-03-03 11:58:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4#5 [2025-03-03 11:58:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4#6 [2025-03-03 11:58:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4#7 [2025-03-03 11:58:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4#8 [2025-03-03 11:58:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4#9 [2025-03-03 11:58:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4#10 [2025-03-03 11:58:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 11:58:30,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 11:58:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2025-03-03 11:58:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2025-03-03 11:58:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2025-03-03 11:58:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#3 [2025-03-03 11:58:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#4 [2025-03-03 11:58:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#5 [2025-03-03 11:58:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#6 [2025-03-03 11:58:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#7 [2025-03-03 11:58:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#8 [2025-03-03 11:58:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#9 [2025-03-03 11:58:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#10 [2025-03-03 11:58:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2025-03-03 11:58:30,028 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2025-03-03 11:58:30,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-03 11:58:30,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-03 11:58:30,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-03 11:58:30,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2025-03-03 11:58:30,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2025-03-03 11:58:30,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2025-03-03 11:58:30,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#6 [2025-03-03 11:58:30,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#7 [2025-03-03 11:58:30,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#8 [2025-03-03 11:58:30,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#9 [2025-03-03 11:58:30,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#10 [2025-03-03 11:58:30,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-03 11:58:30,150 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 11:58:30,152 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 11:58:52,755 INFO L? ?]: Removed 78 outVars from TransFormulas that were not future-live. [2025-03-03 11:58:52,755 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 11:58:52,762 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 11:58:52,763 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 11:58:52,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 11:58:52 BoogieIcfgContainer [2025-03-03 11:58:52,763 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 11:58:52,781 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 11:58:52,781 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 11:58:52,785 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 11:58:52,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 11:58:29" (1/3) ... [2025-03-03 11:58:52,786 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2809eab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 11:58:52, skipping insertion in model container [2025-03-03 11:58:52,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:58:29" (2/3) ... [2025-03-03 11:58:52,786 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2809eab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 11:58:52, skipping insertion in model container [2025-03-03 11:58:52,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 11:58:52" (3/3) ... [2025-03-03 11:58:52,787 INFO L128 eAbstractionObserver]: Analyzing ICFG float_req_bl_0670.c [2025-03-03 11:58:52,797 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 11:58:52,798 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG float_req_bl_0670.c that has 4 procedures, 95 locations, 1 initial locations, 7 loop locations, and 1 error locations. [2025-03-03 11:58:52,841 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 11:58:52,851 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;@442e8fb8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 11:58:52,852 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 11:58:52,856 INFO L276 IsEmpty]: Start isEmpty. Operand has 95 states, 83 states have (on average 1.6385542168674698) internal successors, (136), 84 states have internal predecessors, (136), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-03 11:58:52,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-03-03 11:58:52,864 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:58:52,865 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:58:52,865 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:58:52,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:58:52,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1268997155, now seen corresponding path program 1 times [2025-03-03 11:58:52,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-03 11:58:52,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [378662594] [2025-03-03 11:58:52,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:58:52,877 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 [2025-03-03 11:58:52,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-03 11:58:52,879 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) [2025-03-03 11:58:52,880 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 [2025-03-03 11:58:52,988 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-03 11:58:53,683 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-03 11:58:53,684 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:58:53,684 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:58:53,720 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-03 11:58:53,723 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 11:58:53,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 11:58:53,743 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 11:58:53,744 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-03 11:58:53,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [378662594] [2025-03-03 11:58:53,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [378662594] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 11:58:53,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 11:58:53,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 11:58:53,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884051586] [2025-03-03 11:58:53,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 11:58:53,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-03 11:58:53,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-03 11:58:53,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-03 11:58:53,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 11:58:53,769 INFO L87 Difference]: Start difference. First operand has 95 states, 83 states have (on average 1.6385542168674698) internal successors, (136), 84 states have internal predecessors, (136), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-03 11:58:53,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 11:58:53,796 INFO L93 Difference]: Finished difference Result 182 states and 292 transitions. [2025-03-03 11:58:53,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-03 11:58:53,797 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2025-03-03 11:58:53,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 11:58:53,803 INFO L225 Difference]: With dead ends: 182 [2025-03-03 11:58:53,804 INFO L226 Difference]: Without dead ends: 91 [2025-03-03 11:58:53,808 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 11:58:53,812 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 11:58:53,814 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 11:58:53,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2025-03-03 11:58:53,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2025-03-03 11:58:53,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 80 states have (on average 1.45) internal successors, (116), 80 states have internal predecessors, (116), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-03 11:58:53,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 130 transitions. [2025-03-03 11:58:53,853 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 130 transitions. Word has length 21 [2025-03-03 11:58:53,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 11:58:53,855 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 130 transitions. [2025-03-03 11:58:53,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-03 11:58:53,855 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 130 transitions. [2025-03-03 11:58:53,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-03-03 11:58:53,857 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:58:53,857 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:58:53,891 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 [2025-03-03 11:58:54,058 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 [2025-03-03 11:58:54,058 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:58:54,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:58:54,059 INFO L85 PathProgramCache]: Analyzing trace with hash 416357536, now seen corresponding path program 1 times [2025-03-03 11:58:54,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-03 11:58:54,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [176889818] [2025-03-03 11:58:54,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:58:54,059 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 [2025-03-03 11:58:54,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-03 11:58:54,061 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) [2025-03-03 11:58:54,062 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 [2025-03-03 11:58:54,145 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-03 11:58:54,834 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-03 11:58:54,834 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:58:54,834 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:58:54,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-03 11:58:54,870 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 11:58:59,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 11:58:59,244 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 11:59:10,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-03 11:59:10,211 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-03 11:59:10,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [176889818] [2025-03-03 11:59:10,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [176889818] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 11:59:10,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-03 11:59:10,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2025-03-03 11:59:10,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870145090] [2025-03-03 11:59:10,211 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-03 11:59:10,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-03 11:59:10,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-03 11:59:10,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-03 11:59:10,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2025-03-03 11:59:10,213 INFO L87 Difference]: Start difference. First operand 91 states and 130 transitions. Second operand has 21 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-03 11:59:15,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-03-03 11:59:42,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2025-03-03 11:59:43,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2025-03-03 12:00:00,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-03 12:00:04,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-03 12:00:08,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []