./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/arctan_Pade.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-benchs/arctan_Pade.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 03d4f02c4d6708ec7407dd5809f77bd3b86d46b08411c69d0afecaf50bc68872 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 11:33:47,564 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 11:33:47,610 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 11:33:47,614 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 11:33:47,614 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 11:33:47,633 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 11:33:47,634 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 11:33:47,634 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 11:33:47,634 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 11:33:47,634 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 11:33:47,634 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 11:33:47,634 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 11:33:47,635 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 11:33:47,635 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 11:33:47,636 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 11:33:47,636 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 11:33:47,637 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 11:33:47,637 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 11:33:47,637 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 11:33:47,637 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 11:33:47,637 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 11:33:47,637 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 11:33:47,637 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 11:33:47,637 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 11:33:47,637 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 11:33:47,637 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 11:33:47,637 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 11:33:47,637 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 11:33:47,637 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 11:33:47,637 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 11:33:47,637 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 11:33:47,637 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 11:33:47,637 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 11:33:47,637 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 11:33:47,637 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 11:33:47,637 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 11:33:47,637 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 11:33:47,638 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 11:33:47,638 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 11:33:47,638 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 11:33:47,638 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 11:33:47,638 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 11:33:47,638 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 11:33:47,638 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 -> 03d4f02c4d6708ec7407dd5809f77bd3b86d46b08411c69d0afecaf50bc68872 [2025-03-03 11:33:47,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 11:33:47,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 11:33:47,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 11:33:47,990 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 11:33:47,990 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 11:33:47,991 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/arctan_Pade.c [2025-03-03 11:33:49,155 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aaf92870f/43bf36a788334837a9d8756d84824ff4/FLAG2cc6d4eab [2025-03-03 11:33:49,362 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 11:33:49,363 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/arctan_Pade.c [2025-03-03 11:33:49,372 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aaf92870f/43bf36a788334837a9d8756d84824ff4/FLAG2cc6d4eab [2025-03-03 11:33:49,387 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aaf92870f/43bf36a788334837a9d8756d84824ff4 [2025-03-03 11:33:49,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 11:33:49,390 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 11:33:49,391 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 11:33:49,391 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 11:33:49,396 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 11:33:49,396 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 11:33:49" (1/1) ... [2025-03-03 11:33:49,397 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ca6109a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:33:49, skipping insertion in model container [2025-03-03 11:33:49,397 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 11:33:49" (1/1) ... [2025-03-03 11:33:49,406 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 11:33:49,519 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-benchs/arctan_Pade.c[665,678] [2025-03-03 11:33:49,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 11:33:49,542 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 11:33:49,551 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-benchs/arctan_Pade.c[665,678] [2025-03-03 11:33:49,557 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 11:33:49,568 INFO L204 MainTranslator]: Completed translation [2025-03-03 11:33:49,569 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:33:49 WrapperNode [2025-03-03 11:33:49,569 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 11:33:49,570 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 11:33:49,570 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 11:33:49,570 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 11:33:49,574 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:33:49" (1/1) ... [2025-03-03 11:33:49,581 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:33:49" (1/1) ... [2025-03-03 11:33:49,596 INFO L138 Inliner]: procedures = 18, calls = 15, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 51 [2025-03-03 11:33:49,596 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 11:33:49,597 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 11:33:49,598 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 11:33:49,598 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 11:33:49,603 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:33:49" (1/1) ... [2025-03-03 11:33:49,603 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:33:49" (1/1) ... [2025-03-03 11:33:49,604 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:33:49" (1/1) ... [2025-03-03 11:33:49,618 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]. [2025-03-03 11:33:49,618 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:33:49" (1/1) ... [2025-03-03 11:33:49,618 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:33:49" (1/1) ... [2025-03-03 11:33:49,621 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:33:49" (1/1) ... [2025-03-03 11:33:49,623 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:33:49" (1/1) ... [2025-03-03 11:33:49,626 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:33:49" (1/1) ... [2025-03-03 11:33:49,627 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:33:49" (1/1) ... [2025-03-03 11:33:49,628 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 11:33:49,628 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 11:33:49,628 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 11:33:49,628 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 11:33:49,629 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:33:49" (1/1) ... [2025-03-03 11:33:49,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 11:33:49,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 11:33:49,656 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 11:33:49,662 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 11:33:49,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 11:33:49,677 INFO L130 BoogieDeclarations]: Found specification of procedure ARCTAN_POS [2025-03-03 11:33:49,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ARCTAN_POS [2025-03-03 11:33:49,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 11:33:49,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 11:33:49,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 11:33:49,677 INFO L130 BoogieDeclarations]: Found specification of procedure ARCTAN_0_1 [2025-03-03 11:33:49,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ARCTAN_0_1 [2025-03-03 11:33:49,731 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 11:33:49,732 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 11:33:49,800 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L30: havoc #t~ret4#1; [2025-03-03 11:33:49,821 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2025-03-03 11:33:49,822 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 11:33:49,832 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 11:33:49,833 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 11:33:49,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 11:33:49 BoogieIcfgContainer [2025-03-03 11:33:49,833 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 11:33:49,835 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 11:33:49,835 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 11:33:49,838 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 11:33:49,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 11:33:49" (1/3) ... [2025-03-03 11:33:49,839 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59909151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 11:33:49, skipping insertion in model container [2025-03-03 11:33:49,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:33:49" (2/3) ... [2025-03-03 11:33:49,839 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59909151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 11:33:49, skipping insertion in model container [2025-03-03 11:33:49,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 11:33:49" (3/3) ... [2025-03-03 11:33:49,840 INFO L128 eAbstractionObserver]: Analyzing ICFG arctan_Pade.c [2025-03-03 11:33:49,850 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 11:33:49,851 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG arctan_Pade.c that has 3 procedures, 29 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-03 11:33:49,892 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 11:33:49,902 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;@39e0e5ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 11:33:49,902 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 11:33:49,907 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-03 11:33:49,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-03-03 11:33:49,912 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:33:49,913 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:33:49,913 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:33:49,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:33:49,918 INFO L85 PathProgramCache]: Analyzing trace with hash -618568767, now seen corresponding path program 1 times [2025-03-03 11:33:49,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 11:33:49,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925005986] [2025-03-03 11:33:49,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:33:49,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 11:33:49,981 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-03 11:33:49,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-03 11:33:49,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:33:49,994 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:33:50,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 11:33:50,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 11:33:50,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925005986] [2025-03-03 11:33:50,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925005986] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 11:33:50,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 11:33:50,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 11:33:50,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860385815] [2025-03-03 11:33:50,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 11:33:50,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-03 11:33:50,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 11:33:50,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-03 11:33:50,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 11:33:50,056 INFO L87 Difference]: Start difference. First operand has 29 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-03 11:33:50,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 11:33:50,069 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2025-03-03 11:33:50,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-03 11:33:50,071 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2025-03-03 11:33:50,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 11:33:50,075 INFO L225 Difference]: With dead ends: 55 [2025-03-03 11:33:50,076 INFO L226 Difference]: Without dead ends: 25 [2025-03-03 11:33:50,078 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 11:33:50,081 INFO L435 NwaCegarLoop]: 32 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, 32 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 11:33:50,083 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 11:33:50,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-03-03 11:33:50,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2025-03-03 11:33:50,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-03 11:33:50,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2025-03-03 11:33:50,107 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 20 [2025-03-03 11:33:50,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 11:33:50,108 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2025-03-03 11:33:50,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-03 11:33:50,108 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2025-03-03 11:33:50,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-03-03 11:33:50,110 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:33:50,110 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:33:50,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 11:33:50,110 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:33:50,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:33:50,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1615641120, now seen corresponding path program 1 times [2025-03-03 11:33:50,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 11:33:50,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429439448] [2025-03-03 11:33:50,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:33:50,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 11:33:50,122 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-03 11:33:50,134 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-03 11:33:50,134 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:33:50,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-03 11:33:50,134 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-03 11:33:50,137 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-03 11:33:50,145 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-03 11:33:50,145 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:33:50,145 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-03 11:33:50,159 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-03 11:33:50,159 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-03 11:33:50,160 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-03 11:33:50,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 11:33:50,165 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-03 11:33:50,179 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-03 11:33:50,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 11:33:50 BoogieIcfgContainer [2025-03-03 11:33:50,183 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-03 11:33:50,184 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-03 11:33:50,184 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-03 11:33:50,184 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-03 11:33:50,185 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 11:33:49" (3/4) ... [2025-03-03 11:33:50,186 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-03 11:33:50,187 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-03 11:33:50,188 INFO L158 Benchmark]: Toolchain (without parser) took 797.38ms. Allocated memory is still 142.6MB. Free memory was 113.7MB in the beginning and 66.6MB in the end (delta: 47.1MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-03-03 11:33:50,188 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 11:33:50,188 INFO L158 Benchmark]: CACSL2BoogieTranslator took 178.15ms. Allocated memory is still 142.6MB. Free memory was 113.2MB in the beginning and 102.4MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 11:33:50,188 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.85ms. Allocated memory is still 142.6MB. Free memory was 102.4MB in the beginning and 101.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 11:33:50,189 INFO L158 Benchmark]: Boogie Preprocessor took 30.49ms. Allocated memory is still 142.6MB. Free memory was 101.1MB in the beginning and 100.1MB in the end (delta: 962.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 11:33:50,189 INFO L158 Benchmark]: IcfgBuilder took 204.96ms. Allocated memory is still 142.6MB. Free memory was 100.1MB in the beginning and 88.4MB in the end (delta: 11.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-03 11:33:50,189 INFO L158 Benchmark]: TraceAbstraction took 348.43ms. Allocated memory is still 142.6MB. Free memory was 87.5MB in the beginning and 66.6MB in the end (delta: 20.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-03 11:33:50,189 INFO L158 Benchmark]: Witness Printer took 2.91ms. Allocated memory is still 142.6MB. Free memory is still 66.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 11:33:50,191 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 178.15ms. Allocated memory is still 142.6MB. Free memory was 113.2MB in the beginning and 102.4MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.85ms. Allocated memory is still 142.6MB. Free memory was 102.4MB in the beginning and 101.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.49ms. Allocated memory is still 142.6MB. Free memory was 101.1MB in the beginning and 100.1MB in the end (delta: 962.6kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 204.96ms. Allocated memory is still 142.6MB. Free memory was 100.1MB in the beginning and 88.4MB in the end (delta: 11.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 348.43ms. Allocated memory is still 142.6MB. Free memory was 87.5MB in the beginning and 66.6MB in the end (delta: 20.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 2.91ms. Allocated memory is still 142.6MB. Free memory is still 66.6MB. 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: 17]: 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 someBinaryArithmeticDOUBLEoperation at line 24, overapproximation of someBinaryArithmeticDOUBLEoperation at line 30, overapproximation of someBinaryArithmeticDOUBLEoperation at line 35, overapproximation of someBinaryArithmeticDOUBLEoperation at line 35, overapproximation of someBinaryDOUBLEComparisonOperation at line 54, overapproximation of someBinaryDOUBLEComparisonOperation at line 50, overapproximation of someBinaryDOUBLEComparisonOperation at line 41, overapproximation of someBinaryDOUBLEComparisonOperation at line 35. Possible FailurePath: [L20] const double Pi=3.141592653589793238; VAL [Pi=1570796326794896619/500000000000000000] [L47] double a, r; [L49] a = __VERIFIER_nondet_double() [L50] CALL assume_abort_if_not(a >= -1.79e308 && a <= 1.79e308) [L15] COND FALSE !(!cond) VAL [Pi=1570796326794896619/500000000000000000] [L50] RET assume_abort_if_not(a >= -1.79e308 && a <= 1.79e308) [L52] CALL, EXPR ARCTAN(a) [L41] COND FALSE !(x < 0) VAL [Pi=1570796326794896619/500000000000000000, x=54] [L42] CALL, EXPR ARCTAN_POS(x) VAL [Pi=1570796326794896619/500000000000000000, \old(x)=54] [L35] COND TRUE x > 1. VAL [Pi=1570796326794896619/500000000000000000, \old(x)=54, x=54] [L35] CALL, EXPR ARCTAN_0_1(1. / x) VAL [Pi=1570796326794896619/500000000000000000] [L30] CALL, EXPR PADE_2_2(x) [L24] double x_2 = x*x; [L25] return 1. - x_2 / (3. + 9./5.*x_2); VAL [Pi=1570796326794896619/500000000000000000] [L30] RET, EXPR PADE_2_2(x) [L30] return x*PADE_2_2(x); [L35] RET, EXPR ARCTAN_0_1(1. / x) VAL [Pi=1570796326794896619/500000000000000000, \old(x)=54, x=54] [L35] return Pi / 2. - ARCTAN_0_1(1. / x); [L42] RET, EXPR ARCTAN_POS(x) VAL [Pi=1570796326794896619/500000000000000000, x=54] [L42] return ARCTAN_POS(x); [L52] RET, EXPR ARCTAN(a) [L52] r = ARCTAN(a) [L54] CALL __VERIFIER_assert(r >= -1.571 && r <= 1.571) [L17] COND TRUE !(cond) VAL [Pi=1570796326794896619/500000000000000000] [L17] reach_error() VAL [Pi=1570796326794896619/500000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 32 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 32 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 11:33:50,205 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-benchs/arctan_Pade.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 03d4f02c4d6708ec7407dd5809f77bd3b86d46b08411c69d0afecaf50bc68872 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 11:33:51,996 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 11:33:52,072 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2025-03-03 11:33:52,076 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 11:33:52,076 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 11:33:52,101 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 11:33:52,101 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 11:33:52,101 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 11:33:52,102 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 11:33:52,102 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 11:33:52,102 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 11:33:52,102 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 11:33:52,102 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 11:33:52,102 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 11:33:52,102 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 11:33:52,103 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 11:33:52,103 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 11:33:52,103 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 11:33:52,103 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 11:33:52,103 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 11:33:52,103 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 11:33:52,103 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 11:33:52,103 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 11:33:52,103 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-03 11:33:52,103 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-03 11:33:52,103 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-03 11:33:52,104 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 11:33:52,104 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 11:33:52,104 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 11:33:52,104 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 11:33:52,104 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 11:33:52,104 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 11:33:52,104 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 11:33:52,104 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 11:33:52,104 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 11:33:52,104 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 11:33:52,105 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 11:33:52,105 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 11:33:52,105 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 11:33:52,105 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-03 11:33:52,105 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-03 11:33:52,105 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 11:33:52,105 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 11:33:52,105 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 11:33:52,105 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 11:33:52,105 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 -> 03d4f02c4d6708ec7407dd5809f77bd3b86d46b08411c69d0afecaf50bc68872 [2025-03-03 11:33:52,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 11:33:52,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 11:33:52,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 11:33:52,336 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 11:33:52,336 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 11:33:52,337 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/arctan_Pade.c [2025-03-03 11:33:53,526 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fe5ac626/df1d832280df40e18f95e1e929152fa6/FLAG7d8b8d116 [2025-03-03 11:33:53,732 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 11:33:53,734 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/arctan_Pade.c [2025-03-03 11:33:53,740 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fe5ac626/df1d832280df40e18f95e1e929152fa6/FLAG7d8b8d116 [2025-03-03 11:33:53,756 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fe5ac626/df1d832280df40e18f95e1e929152fa6 [2025-03-03 11:33:53,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 11:33:53,759 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 11:33:53,761 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 11:33:53,761 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 11:33:53,764 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 11:33:53,765 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 11:33:53" (1/1) ... [2025-03-03 11:33:53,765 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d80eff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:33:53, skipping insertion in model container [2025-03-03 11:33:53,766 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 11:33:53" (1/1) ... [2025-03-03 11:33:53,777 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 11:33:53,885 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-benchs/arctan_Pade.c[665,678] [2025-03-03 11:33:53,902 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 11:33:53,912 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 11:33:53,921 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-benchs/arctan_Pade.c[665,678] [2025-03-03 11:33:53,928 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 11:33:53,940 INFO L204 MainTranslator]: Completed translation [2025-03-03 11:33:53,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:33:53 WrapperNode [2025-03-03 11:33:53,941 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 11:33:53,942 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 11:33:53,942 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 11:33:53,942 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 11:33:53,947 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:33:53" (1/1) ... [2025-03-03 11:33:53,954 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:33:53" (1/1) ... [2025-03-03 11:33:53,967 INFO L138 Inliner]: procedures = 19, calls = 15, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 52 [2025-03-03 11:33:53,968 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 11:33:53,969 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 11:33:53,969 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 11:33:53,969 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 11:33:53,974 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:33:53" (1/1) ... [2025-03-03 11:33:53,975 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:33:53" (1/1) ... [2025-03-03 11:33:53,978 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:33:53" (1/1) ... [2025-03-03 11:33:53,991 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]. [2025-03-03 11:33:53,992 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:33:53" (1/1) ... [2025-03-03 11:33:53,992 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:33:53" (1/1) ... [2025-03-03 11:33:54,000 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:33:53" (1/1) ... [2025-03-03 11:33:54,002 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:33:53" (1/1) ... [2025-03-03 11:33:54,003 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:33:53" (1/1) ... [2025-03-03 11:33:54,004 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:33:53" (1/1) ... [2025-03-03 11:33:54,008 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 11:33:54,009 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 11:33:54,011 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 11:33:54,011 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 11:33:54,012 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:33:53" (1/1) ... [2025-03-03 11:33:54,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 11:33:54,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 11:33:54,039 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 11:33:54,044 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 11:33:54,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 11:33:54,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-03 11:33:54,062 INFO L130 BoogieDeclarations]: Found specification of procedure ARCTAN_POS [2025-03-03 11:33:54,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ARCTAN_POS [2025-03-03 11:33:54,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 11:33:54,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 11:33:54,062 INFO L130 BoogieDeclarations]: Found specification of procedure ARCTAN_0_1 [2025-03-03 11:33:54,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ARCTAN_0_1 [2025-03-03 11:33:54,121 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 11:33:54,123 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 11:34:02,300 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L30: havoc #t~ret4#1; [2025-03-03 11:34:02,310 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2025-03-03 11:34:02,310 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 11:34:02,316 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 11:34:02,316 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 11:34:02,316 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 11:34:02 BoogieIcfgContainer [2025-03-03 11:34:02,316 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 11:34:02,318 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 11:34:02,318 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 11:34:02,322 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 11:34:02,322 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 11:33:53" (1/3) ... [2025-03-03 11:34:02,322 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e639bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 11:34:02, skipping insertion in model container [2025-03-03 11:34:02,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:33:53" (2/3) ... [2025-03-03 11:34:02,324 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e639bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 11:34:02, skipping insertion in model container [2025-03-03 11:34:02,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 11:34:02" (3/3) ... [2025-03-03 11:34:02,324 INFO L128 eAbstractionObserver]: Analyzing ICFG arctan_Pade.c [2025-03-03 11:34:02,334 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 11:34:02,336 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG arctan_Pade.c that has 3 procedures, 29 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-03 11:34:02,372 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 11:34:02,380 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;@26e21bce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 11:34:02,380 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 11:34:02,384 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-03 11:34:02,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-03-03 11:34:02,389 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:34:02,389 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:34:02,389 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:34:02,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:34:02,393 INFO L85 PathProgramCache]: Analyzing trace with hash -618568767, now seen corresponding path program 1 times [2025-03-03 11:34:02,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-03 11:34:02,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670179017] [2025-03-03 11:34:02,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:34:02,402 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 11:34:02,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-03 11:34:02,405 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 11:34:02,407 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 11:34:02,463 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-03 11:34:04,202 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-03 11:34:04,203 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:34:04,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:34:04,260 INFO L256 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-03 11:34:04,263 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 11:34:04,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 11:34:04,276 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 11:34:04,276 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-03 11:34:04,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670179017] [2025-03-03 11:34:04,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1670179017] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 11:34:04,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 11:34:04,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 11:34:04,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071851572] [2025-03-03 11:34:04,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 11:34:04,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-03 11:34:04,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-03 11:34:04,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-03 11:34:04,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 11:34:04,292 INFO L87 Difference]: Start difference. First operand has 29 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-03 11:34:04,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 11:34:04,301 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2025-03-03 11:34:04,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-03 11:34:04,302 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2025-03-03 11:34:04,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 11:34:04,306 INFO L225 Difference]: With dead ends: 55 [2025-03-03 11:34:04,306 INFO L226 Difference]: Without dead ends: 25 [2025-03-03 11:34:04,308 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 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 11:34:04,309 INFO L435 NwaCegarLoop]: 32 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, 32 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 11:34:04,310 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 11:34:04,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-03-03 11:34:04,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2025-03-03 11:34:04,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-03 11:34:04,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2025-03-03 11:34:04,331 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 20 [2025-03-03 11:34:04,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 11:34:04,331 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2025-03-03 11:34:04,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-03 11:34:04,332 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2025-03-03 11:34:04,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-03-03 11:34:04,333 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:34:04,333 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:34:04,382 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 11:34:04,534 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 11:34:04,534 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:34:04,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:34:04,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1615641120, now seen corresponding path program 1 times [2025-03-03 11:34:04,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-03 11:34:04,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259864856] [2025-03-03 11:34:04,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:34:04,536 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 11:34:04,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-03 11:34:04,538 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 11:34:04,539 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 11:34:04,564 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-03 11:35:03,723 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-03 11:35:03,724 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:35:03,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:35:03,815 INFO L256 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-03 11:35:03,820 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 11:35:12,953 WARN L286 SmtUtils]: Spent 8.38s 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) [2025-03-03 11:35:21,351 WARN L286 SmtUtils]: Spent 8.40s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-03-03 11:35:29,791 WARN L286 SmtUtils]: Spent 8.44s 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) [2025-03-03 11:35:38,039 WARN L286 SmtUtils]: Spent 8.25s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)