./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_7.i -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 3df3dc3bb1738e955623753f7e0a37e4c32635ed29b967d6ef98d4204effab31 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 16:58:15,351 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 16:58:15,417 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 16:58:15,422 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 16:58:15,424 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 16:58:15,447 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 16:58:15,449 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 16:58:15,449 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 16:58:15,449 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 16:58:15,450 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 16:58:15,450 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 16:58:15,451 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 16:58:15,451 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 16:58:15,452 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 16:58:15,453 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 16:58:15,453 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 16:58:15,453 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 16:58:15,453 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 16:58:15,453 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 16:58:15,453 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 16:58:15,454 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 16:58:15,454 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 16:58:15,457 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 16:58:15,457 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 16:58:15,457 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 16:58:15,457 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 16:58:15,458 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 16:58:15,458 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 16:58:15,458 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 16:58:15,458 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 16:58:15,458 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 16:58:15,458 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 16:58:15,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 16:58:15,459 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 16:58:15,459 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 16:58:15,459 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 16:58:15,459 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 16:58:15,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 16:58:15,459 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 16:58:15,459 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 16:58:15,459 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 16:58:15,461 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 16:58:15,461 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3df3dc3bb1738e955623753f7e0a37e4c32635ed29b967d6ef98d4204effab31 [2024-10-12 16:58:15,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 16:58:15,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 16:58:15,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 16:58:15,673 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 16:58:15,673 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 16:58:15,674 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_7.i [2024-10-12 16:58:16,854 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 16:58:17,003 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 16:58:17,003 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_7.i [2024-10-12 16:58:17,011 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c443e5f0/7661c2be30104346bf0e5efb4a51be5b/FLAG6fe614cac [2024-10-12 16:58:17,414 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c443e5f0/7661c2be30104346bf0e5efb4a51be5b [2024-10-12 16:58:17,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 16:58:17,417 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 16:58:17,418 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 16:58:17,418 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 16:58:17,426 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 16:58:17,426 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:58:17" (1/1) ... [2024-10-12 16:58:17,428 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1efdf8bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:58:17, skipping insertion in model container [2024-10-12 16:58:17,428 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:58:17" (1/1) ... [2024-10-12 16:58:17,446 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 16:58:17,578 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_7.i[1764,1777] [2024-10-12 16:58:17,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 16:58:17,588 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 16:58:17,602 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_7.i[1764,1777] [2024-10-12 16:58:17,602 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 16:58:17,614 INFO L204 MainTranslator]: Completed translation [2024-10-12 16:58:17,616 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:58:17 WrapperNode [2024-10-12 16:58:17,616 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 16:58:17,617 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 16:58:17,617 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 16:58:17,617 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 16:58:17,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:58:17" (1/1) ... [2024-10-12 16:58:17,632 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:58:17" (1/1) ... [2024-10-12 16:58:17,645 INFO L138 Inliner]: procedures = 17, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2024-10-12 16:58:17,646 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 16:58:17,646 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 16:58:17,646 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 16:58:17,646 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 16:58:17,653 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:58:17" (1/1) ... [2024-10-12 16:58:17,653 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:58:17" (1/1) ... [2024-10-12 16:58:17,654 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:58:17" (1/1) ... [2024-10-12 16:58:17,662 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-12 16:58:17,662 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:58:17" (1/1) ... [2024-10-12 16:58:17,662 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:58:17" (1/1) ... [2024-10-12 16:58:17,665 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:58:17" (1/1) ... [2024-10-12 16:58:17,666 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:58:17" (1/1) ... [2024-10-12 16:58:17,667 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:58:17" (1/1) ... [2024-10-12 16:58:17,667 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:58:17" (1/1) ... [2024-10-12 16:58:17,669 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 16:58:17,669 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 16:58:17,669 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 16:58:17,670 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 16:58:17,670 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:58:17" (1/1) ... [2024-10-12 16:58:17,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 16:58:17,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:58:17,694 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 16:58:17,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 16:58:17,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 16:58:17,732 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-10-12 16:58:17,732 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-10-12 16:58:17,733 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2024-10-12 16:58:17,733 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2024-10-12 16:58:17,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 16:58:17,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 16:58:17,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 16:58:17,799 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 16:58:17,802 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 16:58:17,924 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-10-12 16:58:17,924 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 16:58:17,954 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 16:58:17,954 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-12 16:58:17,954 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:58:17 BoogieIcfgContainer [2024-10-12 16:58:17,955 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 16:58:17,956 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 16:58:17,956 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 16:58:17,959 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 16:58:17,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:58:17" (1/3) ... [2024-10-12 16:58:17,960 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d591d81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:58:17, skipping insertion in model container [2024-10-12 16:58:17,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:58:17" (2/3) ... [2024-10-12 16:58:17,960 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d591d81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:58:17, skipping insertion in model container [2024-10-12 16:58:17,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:58:17" (3/3) ... [2024-10-12 16:58:17,961 INFO L112 eAbstractionObserver]: Analyzing ICFG newton_3_7.i [2024-10-12 16:58:17,979 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 16:58:17,979 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 16:58:18,022 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 16:58:18,027 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;@29e2449e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 16:58:18,028 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 16:58:18,032 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-12 16:58:18,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-12 16:58:18,037 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:58:18,038 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:58:18,038 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:58:18,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:58:18,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1770992290, now seen corresponding path program 1 times [2024-10-12 16:58:18,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:58:18,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462887460] [2024-10-12 16:58:18,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:58:18,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:58:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:58:18,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-12 16:58:18,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:58:18,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-12 16:58:18,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:58:18,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 16:58:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:58:18,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 16:58:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:58:18,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-12 16:58:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:58:18,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-12 16:58:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:58:18,160 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 16:58:18,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:58:18,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462887460] [2024-10-12 16:58:18,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462887460] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:58:18,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:58:18,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:58:18,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896771763] [2024-10-12 16:58:18,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:58:18,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 16:58:18,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:58:18,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 16:58:18,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 16:58:18,189 INFO L87 Difference]: Start difference. First operand has 21 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-12 16:58:18,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:58:18,216 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2024-10-12 16:58:18,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 16:58:18,219 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 26 [2024-10-12 16:58:18,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:58:18,224 INFO L225 Difference]: With dead ends: 40 [2024-10-12 16:58:18,224 INFO L226 Difference]: Without dead ends: 19 [2024-10-12 16:58:18,226 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 16:58:18,230 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:58:18,232 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 16:58:18,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-10-12 16:58:18,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-10-12 16:58:18,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 10 states have (on average 1.0) internal successors, (10), 10 states have internal predecessors, (10), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-12 16:58:18,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2024-10-12 16:58:18,258 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 26 [2024-10-12 16:58:18,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:58:18,259 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2024-10-12 16:58:18,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-12 16:58:18,259 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2024-10-12 16:58:18,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-12 16:58:18,262 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:58:18,262 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:58:18,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 16:58:18,262 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:58:18,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:58:18,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1630443680, now seen corresponding path program 1 times [2024-10-12 16:58:18,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:58:18,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773070277] [2024-10-12 16:58:18,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:58:18,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:58:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 16:58:18,276 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 16:58:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 16:58:18,307 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 16:58:18,307 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-12 16:58:18,308 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-12 16:58:18,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 16:58:18,313 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-12 16:58:18,336 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-12 16:58:18,339 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 04:58:18 BoogieIcfgContainer [2024-10-12 16:58:18,339 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-12 16:58:18,340 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-12 16:58:18,340 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-12 16:58:18,340 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-12 16:58:18,340 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:58:17" (3/4) ... [2024-10-12 16:58:18,342 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-12 16:58:18,343 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-12 16:58:18,348 INFO L158 Benchmark]: Toolchain (without parser) took 926.08ms. Allocated memory is still 184.5MB. Free memory was 156.0MB in the beginning and 153.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. [2024-10-12 16:58:18,349 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 130.0MB. Free memory was 92.4MB in the beginning and 92.3MB in the end (delta: 120.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 16:58:18,350 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.55ms. Allocated memory is still 184.5MB. Free memory was 156.0MB in the beginning and 143.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-12 16:58:18,351 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.40ms. Allocated memory is still 184.5MB. Free memory was 143.4MB in the beginning and 142.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 16:58:18,351 INFO L158 Benchmark]: Boogie Preprocessor took 22.63ms. Allocated memory is still 184.5MB. Free memory was 142.1MB in the beginning and 140.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 16:58:18,352 INFO L158 Benchmark]: RCFGBuilder took 285.35ms. Allocated memory is still 184.5MB. Free memory was 140.5MB in the beginning and 128.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-12 16:58:18,353 INFO L158 Benchmark]: TraceAbstraction took 383.30ms. Allocated memory is still 184.5MB. Free memory was 127.4MB in the beginning and 153.4MB in the end (delta: -26.0MB). Peak memory consumption was 31.7MB. Max. memory is 16.1GB. [2024-10-12 16:58:18,353 INFO L158 Benchmark]: Witness Printer took 2.89ms. Allocated memory is still 184.5MB. Free memory is still 153.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 16:58:18,360 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 130.0MB. Free memory was 92.4MB in the beginning and 92.3MB in the end (delta: 120.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 198.55ms. Allocated memory is still 184.5MB. Free memory was 156.0MB in the beginning and 143.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.40ms. Allocated memory is still 184.5MB. Free memory was 143.4MB in the beginning and 142.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.63ms. Allocated memory is still 184.5MB. Free memory was 142.1MB in the beginning and 140.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 285.35ms. Allocated memory is still 184.5MB. Free memory was 140.5MB in the beginning and 128.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 383.30ms. Allocated memory is still 184.5MB. Free memory was 127.4MB in the beginning and 153.4MB in the end (delta: -26.0MB). Peak memory consumption was 31.7MB. Max. memory is 16.1GB. * Witness Printer took 2.89ms. Allocated memory is still 184.5MB. Free memory is still 153.4MB. 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: 51]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 40, overapproximation of someBinaryDOUBLEComparisonOperation at line 50, overapproximation of someBinaryArithmeticFLOAToperation at line 46. Possible FailurePath: [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN > -1.4f && IN < 1.4f) [L24] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN > -1.4f && IN < 1.4f) [L42] CALL, EXPR f(IN) VAL [\old(x)=53] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L42] RET, EXPR f(IN) VAL [IN=53] [L42] CALL, EXPR fp(IN) VAL [\old(x)=53] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L42] RET, EXPR fp(IN) VAL [IN=53] [L42] float x = IN - f(IN)/fp(IN); [L44] CALL, EXPR f(x) VAL [\old(x)=54] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L44] RET, EXPR f(x) VAL [IN=53, x=54] [L44] CALL, EXPR fp(x) VAL [\old(x)=54] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L44] RET, EXPR fp(x) VAL [IN=53, x=54] [L44] x = x - f(x)/fp(x) [L46] CALL, EXPR f(x) VAL [\old(x)=55] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L46] RET, EXPR f(x) VAL [IN=53, x=55] [L46] CALL, EXPR fp(x) VAL [\old(x)=55] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L46] RET, EXPR fp(x) VAL [IN=53, x=55] [L46] x = x - f(x)/fp(x) [L50] COND TRUE !(x < 0.1) VAL [IN=53] [L51] reach_error() VAL [IN=53] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 20 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 20 mSDtfsCounter, 4 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 12/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-10-12 16:58:18,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/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/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_7.i -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 3df3dc3bb1738e955623753f7e0a37e4c32635ed29b967d6ef98d4204effab31 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 16:58:20,138 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 16:58:20,203 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-10-12 16:58:20,208 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 16:58:20,209 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 16:58:20,230 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 16:58:20,232 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 16:58:20,233 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 16:58:20,233 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 16:58:20,233 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 16:58:20,233 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 16:58:20,234 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 16:58:20,234 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 16:58:20,234 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 16:58:20,234 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 16:58:20,234 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 16:58:20,235 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 16:58:20,235 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 16:58:20,235 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 16:58:20,235 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 16:58:20,235 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 16:58:20,236 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 16:58:20,236 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 16:58:20,237 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-12 16:58:20,237 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-12 16:58:20,237 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 16:58:20,237 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-12 16:58:20,237 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 16:58:20,238 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 16:58:20,238 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 16:58:20,238 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 16:58:20,238 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 16:58:20,238 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 16:58:20,239 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 16:58:20,239 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 16:58:20,239 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 16:58:20,239 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 16:58:20,239 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 16:58:20,240 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-12 16:58:20,240 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-12 16:58:20,240 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 16:58:20,241 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 16:58:20,241 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 16:58:20,241 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 16:58:20,242 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-12 16:58:20,242 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3df3dc3bb1738e955623753f7e0a37e4c32635ed29b967d6ef98d4204effab31 [2024-10-12 16:58:20,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 16:58:20,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 16:58:20,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 16:58:20,515 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 16:58:20,515 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 16:58:20,517 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_7.i [2024-10-12 16:58:21,744 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 16:58:21,904 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 16:58:21,904 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_7.i [2024-10-12 16:58:21,910 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e94c76f3/ae565eb5a60049309594e8058ec8a171/FLAG2c2a2ad23 [2024-10-12 16:58:21,920 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e94c76f3/ae565eb5a60049309594e8058ec8a171 [2024-10-12 16:58:21,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 16:58:21,923 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 16:58:21,924 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 16:58:21,924 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 16:58:21,928 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 16:58:21,928 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:58:21" (1/1) ... [2024-10-12 16:58:21,930 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f1e324d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:58:21, skipping insertion in model container [2024-10-12 16:58:21,930 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:58:21" (1/1) ... [2024-10-12 16:58:21,946 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 16:58:22,081 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_7.i[1764,1777] [2024-10-12 16:58:22,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 16:58:22,096 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 16:58:22,116 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_7.i[1764,1777] [2024-10-12 16:58:22,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 16:58:22,130 INFO L204 MainTranslator]: Completed translation [2024-10-12 16:58:22,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:58:22 WrapperNode [2024-10-12 16:58:22,131 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 16:58:22,132 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 16:58:22,132 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 16:58:22,132 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 16:58:22,137 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:58:22" (1/1) ... [2024-10-12 16:58:22,156 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:58:22" (1/1) ... [2024-10-12 16:58:22,171 INFO L138 Inliner]: procedures = 18, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2024-10-12 16:58:22,172 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 16:58:22,173 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 16:58:22,173 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 16:58:22,173 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 16:58:22,181 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:58:22" (1/1) ... [2024-10-12 16:58:22,182 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:58:22" (1/1) ... [2024-10-12 16:58:22,187 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:58:22" (1/1) ... [2024-10-12 16:58:22,199 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-12 16:58:22,200 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:58:22" (1/1) ... [2024-10-12 16:58:22,200 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:58:22" (1/1) ... [2024-10-12 16:58:22,208 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:58:22" (1/1) ... [2024-10-12 16:58:22,212 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:58:22" (1/1) ... [2024-10-12 16:58:22,213 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:58:22" (1/1) ... [2024-10-12 16:58:22,213 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:58:22" (1/1) ... [2024-10-12 16:58:22,215 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 16:58:22,216 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 16:58:22,216 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 16:58:22,216 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 16:58:22,217 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:58:22" (1/1) ... [2024-10-12 16:58:22,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 16:58:22,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:58:22,242 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 16:58:22,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 16:58:22,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 16:58:22,285 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-10-12 16:58:22,285 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-10-12 16:58:22,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-12 16:58:22,285 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2024-10-12 16:58:22,286 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2024-10-12 16:58:22,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 16:58:22,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 16:58:22,342 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 16:58:22,344 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 16:58:34,613 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-10-12 16:58:34,614 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 16:58:34,649 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 16:58:34,649 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-12 16:58:34,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:58:34 BoogieIcfgContainer [2024-10-12 16:58:34,653 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 16:58:34,655 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 16:58:34,655 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 16:58:34,660 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 16:58:34,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:58:21" (1/3) ... [2024-10-12 16:58:34,662 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ee69f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:58:34, skipping insertion in model container [2024-10-12 16:58:34,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:58:22" (2/3) ... [2024-10-12 16:58:34,663 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ee69f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:58:34, skipping insertion in model container [2024-10-12 16:58:34,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:58:34" (3/3) ... [2024-10-12 16:58:34,664 INFO L112 eAbstractionObserver]: Analyzing ICFG newton_3_7.i [2024-10-12 16:58:34,680 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 16:58:34,681 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 16:58:34,732 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 16:58:34,739 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;@83b8876, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 16:58:34,739 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 16:58:34,743 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-12 16:58:34,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-12 16:58:34,749 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:58:34,750 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:58:34,750 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:58:34,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:58:34,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1770992290, now seen corresponding path program 1 times [2024-10-12 16:58:34,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-12 16:58:34,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1392307845] [2024-10-12 16:58:34,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:58:34,768 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-12 16:58:34,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-12 16:58:34,772 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-12 16:58:34,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-12 16:58:37,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:58:37,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-10-12 16:58:37,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:58:37,259 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 16:58:37,259 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:58:37,259 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-12 16:58:37,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1392307845] [2024-10-12 16:58:37,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1392307845] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:58:37,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:58:37,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:58:37,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634311601] [2024-10-12 16:58:37,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:58:37,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 16:58:37,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-12 16:58:37,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 16:58:37,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 16:58:37,295 INFO L87 Difference]: Start difference. First operand has 21 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-12 16:58:41,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-12 16:58:45,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-12 16:58:45,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:58:45,906 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2024-10-12 16:58:45,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 16:58:45,908 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 26 [2024-10-12 16:58:45,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:58:45,913 INFO L225 Difference]: With dead ends: 40 [2024-10-12 16:58:45,913 INFO L226 Difference]: Without dead ends: 19 [2024-10-12 16:58:45,914 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 16:58:45,916 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:58:45,917 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2024-10-12 16:58:45,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-10-12 16:58:45,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-10-12 16:58:45,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 10 states have (on average 1.0) internal successors, (10), 10 states have internal predecessors, (10), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-12 16:58:45,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2024-10-12 16:58:45,940 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 26 [2024-10-12 16:58:45,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:58:45,940 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2024-10-12 16:58:45,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-12 16:58:45,940 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2024-10-12 16:58:45,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-12 16:58:45,941 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:58:45,942 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:58:46,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-12 16:58:46,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-12 16:58:46,143 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:58:46,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:58:46,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1630443680, now seen corresponding path program 1 times [2024-10-12 16:58:46,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-12 16:58:46,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1764801646] [2024-10-12 16:58:46,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:58:46,145 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-12 16:58:46,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-12 16:58:46,148 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-12 16:58:46,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-12 16:58:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 16:58:59,431 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.