./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/sqrt_poly.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/sqrt_poly.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9ff417092ff6ab1dae16b3d719851bc30771c0c1117076f87d0e779624eadca8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 18:29:45,564 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 18:29:45,618 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 18:29:45,621 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 18:29:45,621 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 18:29:45,633 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 18:29:45,633 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 18:29:45,633 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 18:29:45,633 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 18:29:45,633 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 18:29:45,633 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 18:29:45,634 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 18:29:45,634 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 18:29:45,634 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 18:29:45,634 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 18:29:45,634 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 18:29:45,634 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 18:29:45,634 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 18:29:45,634 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 18:29:45,634 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 18:29:45,634 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 18:29:45,635 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 18:29:45,635 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 18:29:45,635 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 18:29:45,635 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 18:29:45,635 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 18:29:45,635 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 18:29:45,635 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 18:29:45,635 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 18:29:45,635 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 18:29:45,635 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 18:29:45,635 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 18:29:45,635 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 18:29:45,636 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 18:29:45,636 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 18:29:45,636 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 18:29:45,636 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 18:29:45,636 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 18:29:45,636 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 18:29:45,636 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 18:29:45,636 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 18:29:45,636 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 18:29:45,636 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 18:29:45,636 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ff417092ff6ab1dae16b3d719851bc30771c0c1117076f87d0e779624eadca8 [2025-02-07 18:29:45,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 18:29:45,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 18:29:45,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 18:29:45,868 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 18:29:45,873 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 18:29:45,873 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/sqrt_poly.c [2025-02-07 18:29:46,976 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5213f18fb/3a693b5ac28e4bc8bee6fa1abbae4b1c/FLAGf2b028e79 [2025-02-07 18:29:47,180 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 18:29:47,182 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_poly.c [2025-02-07 18:29:47,187 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5213f18fb/3a693b5ac28e4bc8bee6fa1abbae4b1c/FLAGf2b028e79 [2025-02-07 18:29:47,570 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5213f18fb/3a693b5ac28e4bc8bee6fa1abbae4b1c [2025-02-07 18:29:47,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 18:29:47,572 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 18:29:47,578 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 18:29:47,578 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 18:29:47,581 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 18:29:47,582 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 06:29:47" (1/1) ... [2025-02-07 18:29:47,586 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7215ffeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:29:47, skipping insertion in model container [2025-02-07 18:29:47,587 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 06:29:47" (1/1) ... [2025-02-07 18:29:47,601 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 18:29:47,693 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_poly.c[671,684] [2025-02-07 18:29:47,700 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 18:29:47,705 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 18:29:47,711 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_poly.c[671,684] [2025-02-07 18:29:47,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 18:29:47,721 INFO L204 MainTranslator]: Completed translation [2025-02-07 18:29:47,722 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:29:47 WrapperNode [2025-02-07 18:29:47,722 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 18:29:47,723 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 18:29:47,724 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 18:29:47,724 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 18:29:47,728 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:29:47" (1/1) ... [2025-02-07 18:29:47,733 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:29:47" (1/1) ... [2025-02-07 18:29:47,742 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2025-02-07 18:29:47,742 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 18:29:47,742 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 18:29:47,743 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 18:29:47,743 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 18:29:47,747 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:29:47" (1/1) ... [2025-02-07 18:29:47,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:29:47" (1/1) ... [2025-02-07 18:29:47,747 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:29:47" (1/1) ... [2025-02-07 18:29:47,753 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-07 18:29:47,753 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:29:47" (1/1) ... [2025-02-07 18:29:47,753 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:29:47" (1/1) ... [2025-02-07 18:29:47,755 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:29:47" (1/1) ... [2025-02-07 18:29:47,756 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:29:47" (1/1) ... [2025-02-07 18:29:47,756 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:29:47" (1/1) ... [2025-02-07 18:29:47,757 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:29:47" (1/1) ... [2025-02-07 18:29:47,757 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 18:29:47,758 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 18:29:47,758 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 18:29:47,758 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 18:29:47,758 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:29:47" (1/1) ... [2025-02-07 18:29:47,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 18:29:47,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 18:29:47,778 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-07 18:29:47,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-07 18:29:47,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 18:29:47,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 18:29:47,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 18:29:47,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 18:29:47,828 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 18:29:47,829 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 18:29:47,912 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2025-02-07 18:29:47,912 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 18:29:47,918 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 18:29:47,919 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 18:29:47,919 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 06:29:47 BoogieIcfgContainer [2025-02-07 18:29:47,919 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 18:29:47,921 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 18:29:47,921 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 18:29:47,924 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 18:29:47,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 06:29:47" (1/3) ... [2025-02-07 18:29:47,925 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6d65e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 06:29:47, skipping insertion in model container [2025-02-07 18:29:47,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:29:47" (2/3) ... [2025-02-07 18:29:47,925 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6d65e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 06:29:47, skipping insertion in model container [2025-02-07 18:29:47,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 06:29:47" (3/3) ... [2025-02-07 18:29:47,926 INFO L128 eAbstractionObserver]: Analyzing ICFG sqrt_poly.c [2025-02-07 18:29:47,937 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 18:29:47,938 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG sqrt_poly.c that has 1 procedures, 11 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-02-07 18:29:47,977 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 18:29:47,989 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;@22be44e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 18:29:47,991 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 18:29:47,995 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 18:29:48,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-07 18:29:48,001 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 18:29:48,002 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-07 18:29:48,003 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 18:29:48,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 18:29:48,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1114316889, now seen corresponding path program 1 times [2025-02-07 18:29:48,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 18:29:48,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7510997] [2025-02-07 18:29:48,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 18:29:48,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 18:29:48,078 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-07 18:29:48,086 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-07 18:29:48,087 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 18:29:48,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 18:29:48,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 18:29:48,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 18:29:48,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7510997] [2025-02-07 18:29:48,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7510997] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 18:29:48,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 18:29:48,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-07 18:29:48,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678560528] [2025-02-07 18:29:48,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 18:29:48,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-07 18:29:48,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 18:29:48,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-07 18:29:48,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-07 18:29:48,130 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 18:29:48,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 18:29:48,137 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2025-02-07 18:29:48,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-07 18:29:48,138 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-02-07 18:29:48,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 18:29:48,142 INFO L225 Difference]: With dead ends: 20 [2025-02-07 18:29:48,143 INFO L226 Difference]: Without dead ends: 8 [2025-02-07 18:29:48,145 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 [2025-02-07 18:29:48,146 INFO L435 NwaCegarLoop]: 11 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, 11 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 [2025-02-07 18:29:48,147 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 18:29:48,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2025-02-07 18:29:48,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2025-02-07 18:29:48,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 18:29:48,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2025-02-07 18:29:48,164 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 7 [2025-02-07 18:29:48,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 18:29:48,165 INFO L471 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2025-02-07 18:29:48,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 18:29:48,165 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2025-02-07 18:29:48,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-07 18:29:48,165 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 18:29:48,165 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-07 18:29:48,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-07 18:29:48,166 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 18:29:48,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 18:29:48,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1085687738, now seen corresponding path program 1 times [2025-02-07 18:29:48,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 18:29:48,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895618210] [2025-02-07 18:29:48,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 18:29:48,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 18:29:48,172 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-07 18:29:48,179 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-07 18:29:48,179 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 18:29:48,179 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-07 18:29:48,179 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-07 18:29:48,182 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-07 18:29:48,186 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-07 18:29:48,187 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 18:29:48,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-07 18:29:48,197 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-07 18:29:48,198 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-07 18:29:48,199 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-02-07 18:29:48,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-07 18:29:48,202 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-07 18:29:48,211 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-07 18:29:48,213 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 06:29:48 BoogieIcfgContainer [2025-02-07 18:29:48,214 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-07 18:29:48,214 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-07 18:29:48,214 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-07 18:29:48,214 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-07 18:29:48,215 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 06:29:47" (3/4) ... [2025-02-07 18:29:48,216 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-07 18:29:48,217 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-07 18:29:48,217 INFO L158 Benchmark]: Toolchain (without parser) took 645.21ms. Allocated memory is still 167.8MB. Free memory was 124.2MB in the beginning and 80.9MB in the end (delta: 43.3MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-02-07 18:29:48,218 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 201.3MB. Free memory is still 115.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 18:29:48,218 INFO L158 Benchmark]: CACSL2BoogieTranslator took 147.60ms. Allocated memory is still 167.8MB. Free memory was 123.2MB in the beginning and 112.5MB in the end (delta: 10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-07 18:29:48,218 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.46ms. Allocated memory is still 167.8MB. Free memory was 112.5MB in the beginning and 111.5MB in the end (delta: 954.4kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 18:29:48,218 INFO L158 Benchmark]: Boogie Preprocessor took 14.82ms. Allocated memory is still 167.8MB. Free memory was 111.5MB in the beginning and 110.6MB in the end (delta: 954.4kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 18:29:48,219 INFO L158 Benchmark]: IcfgBuilder took 161.59ms. Allocated memory is still 167.8MB. Free memory was 110.6MB in the beginning and 100.5MB in the end (delta: 10.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-07 18:29:48,219 INFO L158 Benchmark]: TraceAbstraction took 292.51ms. Allocated memory is still 167.8MB. Free memory was 99.6MB in the beginning and 80.9MB in the end (delta: 18.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-07 18:29:48,219 INFO L158 Benchmark]: Witness Printer took 2.87ms. Allocated memory is still 167.8MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 18:29:48,220 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 201.3MB. Free memory is still 115.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 147.60ms. Allocated memory is still 167.8MB. Free memory was 123.2MB in the beginning and 112.5MB in the end (delta: 10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.46ms. Allocated memory is still 167.8MB. Free memory was 112.5MB in the beginning and 111.5MB in the end (delta: 954.4kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 14.82ms. Allocated memory is still 167.8MB. Free memory was 111.5MB in the beginning and 110.6MB in the end (delta: 954.4kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 161.59ms. Allocated memory is still 167.8MB. Free memory was 110.6MB in the beginning and 100.5MB in the end (delta: 10.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 292.51ms. Allocated memory is still 167.8MB. Free memory was 99.6MB in the beginning and 80.9MB in the end (delta: 18.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 2.87ms. Allocated memory is still 167.8MB. Free memory is still 80.9MB. 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: 16]: 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 27, overapproximation of someBinaryDOUBLEComparisonOperation at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 30, overapproximation of someBinaryDOUBLEComparisonOperation at line 27. Possible FailurePath: [L18] double sqrt2 = 1.414213538169860839843750; [L22] double S, I; [L24] I = __VERIFIER_nondet_double() [L25] CALL assume_abort_if_not(I >= 1. && I <= 3.) [L14] COND FALSE !(!cond) VAL [sqrt2=11863283/8388608] [L25] RET assume_abort_if_not(I >= 1. && I <= 3.) [L27] COND TRUE I >= 2. [L27] S = sqrt2 * (1.+(I/2.- 1.)*(.5-0.125*(I/2.-1.))) VAL [sqrt2=11863283/8388608] [L30] CALL __VERIFIER_assert(S >= 1. && S <= 2.) [L16] COND TRUE !(cond) VAL [sqrt2=11863283/8388608] [L16] reach_error() VAL [sqrt2=11863283/8388608] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, 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, 11 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, 11 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=11occurred 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, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 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 [2025-02-07 18:29:48,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/sqrt_poly.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9ff417092ff6ab1dae16b3d719851bc30771c0c1117076f87d0e779624eadca8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 18:29:50,415 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 18:29:50,490 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2025-02-07 18:29:50,498 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 18:29:50,502 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 18:29:50,522 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 18:29:50,523 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 18:29:50,523 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 18:29:50,525 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 18:29:50,525 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 18:29:50,525 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 18:29:50,525 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 18:29:50,526 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 18:29:50,526 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 18:29:50,526 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 18:29:50,526 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 18:29:50,526 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 18:29:50,526 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 18:29:50,526 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 18:29:50,526 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 18:29:50,526 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 18:29:50,526 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 18:29:50,526 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 18:29:50,526 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-07 18:29:50,526 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-07 18:29:50,526 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-07 18:29:50,526 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 18:29:50,526 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 18:29:50,527 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 18:29:50,527 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 18:29:50,527 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 18:29:50,527 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 18:29:50,527 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 18:29:50,527 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 18:29:50,527 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 18:29:50,527 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 18:29:50,527 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 18:29:50,527 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 18:29:50,527 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 18:29:50,527 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-07 18:29:50,527 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-07 18:29:50,527 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 18:29:50,527 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 18:29:50,527 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 18:29:50,527 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 18:29:50,527 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ff417092ff6ab1dae16b3d719851bc30771c0c1117076f87d0e779624eadca8 [2025-02-07 18:29:50,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 18:29:50,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 18:29:50,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 18:29:50,824 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 18:29:50,825 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 18:29:50,825 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/sqrt_poly.c [2025-02-07 18:29:52,042 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/dc483d55e/31a3838441a745ae8b7355a853b896db/FLAG0a0125e1a [2025-02-07 18:29:52,229 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 18:29:52,230 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_poly.c [2025-02-07 18:29:52,235 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/dc483d55e/31a3838441a745ae8b7355a853b896db/FLAG0a0125e1a [2025-02-07 18:29:52,597 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/dc483d55e/31a3838441a745ae8b7355a853b896db [2025-02-07 18:29:52,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 18:29:52,602 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 18:29:52,603 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 18:29:52,603 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 18:29:52,606 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 18:29:52,606 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 06:29:52" (1/1) ... [2025-02-07 18:29:52,607 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40215413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:29:52, skipping insertion in model container [2025-02-07 18:29:52,607 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 06:29:52" (1/1) ... [2025-02-07 18:29:52,615 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 18:29:52,707 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_poly.c[671,684] [2025-02-07 18:29:52,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 18:29:52,733 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 18:29:52,745 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_poly.c[671,684] [2025-02-07 18:29:52,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 18:29:52,763 INFO L204 MainTranslator]: Completed translation [2025-02-07 18:29:52,765 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:29:52 WrapperNode [2025-02-07 18:29:52,765 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 18:29:52,766 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 18:29:52,766 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 18:29:52,767 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 18:29:52,773 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:29:52" (1/1) ... [2025-02-07 18:29:52,782 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:29:52" (1/1) ... [2025-02-07 18:29:52,805 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 32 [2025-02-07 18:29:52,807 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 18:29:52,808 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 18:29:52,808 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 18:29:52,808 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 18:29:52,814 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:29:52" (1/1) ... [2025-02-07 18:29:52,815 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:29:52" (1/1) ... [2025-02-07 18:29:52,817 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:29:52" (1/1) ... [2025-02-07 18:29:52,831 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-07 18:29:52,832 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:29:52" (1/1) ... [2025-02-07 18:29:52,832 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:29:52" (1/1) ... [2025-02-07 18:29:52,837 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:29:52" (1/1) ... [2025-02-07 18:29:52,841 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:29:52" (1/1) ... [2025-02-07 18:29:52,842 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:29:52" (1/1) ... [2025-02-07 18:29:52,843 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:29:52" (1/1) ... [2025-02-07 18:29:52,845 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 18:29:52,847 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 18:29:52,847 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 18:29:52,847 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 18:29:52,848 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:29:52" (1/1) ... [2025-02-07 18:29:52,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 18:29:52,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 18:29:52,876 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-07 18:29:52,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-07 18:29:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 18:29:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-07 18:29:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 18:29:52,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 18:29:52,947 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 18:29:52,948 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 18:30:01,359 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-02-07 18:30:01,359 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 18:30:01,364 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 18:30:01,364 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 18:30:01,365 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 06:30:01 BoogieIcfgContainer [2025-02-07 18:30:01,365 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 18:30:01,366 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 18:30:01,366 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 18:30:01,369 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 18:30:01,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 06:29:52" (1/3) ... [2025-02-07 18:30:01,369 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4069c40a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 06:30:01, skipping insertion in model container [2025-02-07 18:30:01,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:29:52" (2/3) ... [2025-02-07 18:30:01,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4069c40a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 06:30:01, skipping insertion in model container [2025-02-07 18:30:01,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 06:30:01" (3/3) ... [2025-02-07 18:30:01,370 INFO L128 eAbstractionObserver]: Analyzing ICFG sqrt_poly.c [2025-02-07 18:30:01,379 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 18:30:01,380 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG sqrt_poly.c that has 1 procedures, 11 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-02-07 18:30:01,405 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 18:30:01,412 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;@c9c1a1c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 18:30:01,412 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 18:30:01,414 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 18:30:01,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-07 18:30:01,417 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 18:30:01,417 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-07 18:30:01,417 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 18:30:01,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 18:30:01,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1114316889, now seen corresponding path program 1 times [2025-02-07 18:30:01,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-07 18:30:01,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990667982] [2025-02-07 18:30:01,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 18:30:01,434 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-02-07 18:30:01,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2025-02-07 18:30:01,438 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2025-02-07 18:30:01,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2025-02-07 18:30:01,466 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-07 18:30:01,916 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-07 18:30:01,916 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 18:30:01,916 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 18:30:01,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-07 18:30:01,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 18:30:01,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 18:30:01,951 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 18:30:01,951 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-07 18:30:01,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [990667982] [2025-02-07 18:30:01,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [990667982] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 18:30:01,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 18:30:01,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-07 18:30:01,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719530077] [2025-02-07 18:30:01,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 18:30:01,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-07 18:30:01,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-07 18:30:01,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-07 18:30:01,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-07 18:30:01,969 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 18:30:01,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 18:30:01,975 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2025-02-07 18:30:01,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-07 18:30:01,977 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-02-07 18:30:01,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 18:30:01,980 INFO L225 Difference]: With dead ends: 20 [2025-02-07 18:30:01,980 INFO L226 Difference]: Without dead ends: 8 [2025-02-07 18:30:01,985 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-07 18:30:01,987 INFO L435 NwaCegarLoop]: 11 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, 11 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 [2025-02-07 18:30:01,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 18:30:02,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2025-02-07 18:30:02,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2025-02-07 18:30:02,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 18:30:02,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2025-02-07 18:30:02,019 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 7 [2025-02-07 18:30:02,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 18:30:02,019 INFO L471 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2025-02-07 18:30:02,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 18:30:02,019 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2025-02-07 18:30:02,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-07 18:30:02,019 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 18:30:02,020 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-07 18:30:02,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2025-02-07 18:30:02,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-02-07 18:30:02,221 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 18:30:02,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 18:30:02,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1085687738, now seen corresponding path program 1 times [2025-02-07 18:30:02,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-07 18:30:02,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [97888872] [2025-02-07 18:30:02,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 18:30:02,222 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-02-07 18:30:02,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2025-02-07 18:30:02,224 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2025-02-07 18:30:02,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2025-02-07 18:30:02,246 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-07 18:30:03,900 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-07 18:30:03,901 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 18:30:03,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 18:30:03,929 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-07 18:30:03,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 18:30:13,210 WARN L286 SmtUtils]: Spent 8.26s 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) [2025-02-07 18:30:21,471 WARN L286 SmtUtils]: Spent 8.26s 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) [2025-02-07 18:30:29,756 WARN L286 SmtUtils]: Spent 8.28s 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) [2025-02-07 18:30:37,948 WARN L286 SmtUtils]: Spent 8.19s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-02-07 18:30:42,069 WARN L851 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~I~0#1_7| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.geq |v_ULTIMATE.start_main_~I~0#1_7| .cse0) (fp.geq |v_ULTIMATE.start_main_~I~0#1_7| .cse1) (fp.leq |v_ULTIMATE.start_main_~I~0#1_7| ((_ to_fp 11 53) c_currentRoundingMode 3.0)) (= |c_ULTIMATE.start_main_~S~0#1| (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 11863283.0 8388608.0)) (fp.add c_currentRoundingMode .cse0 (let ((.cse2 (fp.sub c_currentRoundingMode (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~I~0#1_7| .cse1) .cse0))) (fp.mul c_currentRoundingMode .cse2 (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8.0)) .cse2)))))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2025-02-07 18:30:58,888 WARN L286 SmtUtils]: Spent 8.31s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-02-07 18:31:07,224 WARN L286 SmtUtils]: Spent 8.34s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-02-07 18:31:15,611 WARN L286 SmtUtils]: Spent 8.39s 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) [2025-02-07 18:31:23,941 WARN L286 SmtUtils]: Spent 8.33s 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)