./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_3_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_3_1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 487cb753ab668f0dc3893a3ab2fa6b5020a9a953baa1eebb275c5ff36ca3ae95 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 12:36:11,194 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 12:36:11,250 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 12:36:11,254 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 12:36:11,254 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 12:36:11,275 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 12:36:11,276 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 12:36:11,276 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 12:36:11,276 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 12:36:11,276 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 12:36:11,277 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 12:36:11,277 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 12:36:11,277 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 12:36:11,277 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 12:36:11,277 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 12:36:11,277 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 12:36:11,277 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 12:36:11,277 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 12:36:11,277 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 12:36:11,277 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 12:36:11,277 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 12:36:11,277 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 12:36:11,277 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 12:36:11,277 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 12:36:11,278 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 12:36:11,278 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 12:36:11,278 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 12:36:11,278 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 12:36:11,278 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 12:36:11,278 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 12:36:11,278 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 12:36:11,278 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 12:36:11,278 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 12:36:11,278 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 12:36:11,278 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 12:36:11,278 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 12:36:11,278 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 12:36:11,278 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 12:36:11,278 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 12:36:11,278 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 12:36:11,278 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 12:36:11,278 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 12:36:11,278 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 12:36:11,278 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 -> 487cb753ab668f0dc3893a3ab2fa6b5020a9a953baa1eebb275c5ff36ca3ae95 [2025-02-05 12:36:11,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 12:36:11,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 12:36:11,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 12:36:11,521 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 12:36:11,521 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 12:36:11,522 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_3_1.i [2025-02-05 12:36:12,656 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b10ac0714/02a71e78386046359854d1ba0b301965/FLAGa687226c8 [2025-02-05 12:36:12,872 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 12:36:12,874 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_1.i [2025-02-05 12:36:12,883 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b10ac0714/02a71e78386046359854d1ba0b301965/FLAGa687226c8 [2025-02-05 12:36:13,208 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b10ac0714/02a71e78386046359854d1ba0b301965 [2025-02-05 12:36:13,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 12:36:13,211 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 12:36:13,212 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 12:36:13,212 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 12:36:13,215 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 12:36:13,216 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 12:36:13" (1/1) ... [2025-02-05 12:36:13,216 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ceaecac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:13, skipping insertion in model container [2025-02-05 12:36:13,217 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 12:36:13" (1/1) ... [2025-02-05 12:36:13,227 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 12:36:13,338 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_1.i[1764,1777] [2025-02-05 12:36:13,341 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 12:36:13,350 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 12:36:13,363 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_1.i[1764,1777] [2025-02-05 12:36:13,364 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 12:36:13,375 INFO L204 MainTranslator]: Completed translation [2025-02-05 12:36:13,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:13 WrapperNode [2025-02-05 12:36:13,376 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 12:36:13,377 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 12:36:13,377 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 12:36:13,377 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 12:36:13,381 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:13" (1/1) ... [2025-02-05 12:36:13,386 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:13" (1/1) ... [2025-02-05 12:36:13,399 INFO L138 Inliner]: procedures = 17, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2025-02-05 12:36:13,399 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 12:36:13,400 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 12:36:13,400 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 12:36:13,401 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 12:36:13,405 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:13" (1/1) ... [2025-02-05 12:36:13,406 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:13" (1/1) ... [2025-02-05 12:36:13,406 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:13" (1/1) ... [2025-02-05 12:36:13,419 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]. [2025-02-05 12:36:13,420 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:13" (1/1) ... [2025-02-05 12:36:13,420 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:13" (1/1) ... [2025-02-05 12:36:13,422 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:13" (1/1) ... [2025-02-05 12:36:13,426 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:13" (1/1) ... [2025-02-05 12:36:13,426 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:13" (1/1) ... [2025-02-05 12:36:13,427 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:13" (1/1) ... [2025-02-05 12:36:13,427 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 12:36:13,428 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 12:36:13,428 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 12:36:13,428 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 12:36:13,430 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:13" (1/1) ... [2025-02-05 12:36:13,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 12:36:13,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 12:36:13,459 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) [2025-02-05 12:36:13,462 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 [2025-02-05 12:36:13,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 12:36:13,478 INFO L130 BoogieDeclarations]: Found specification of procedure f [2025-02-05 12:36:13,479 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2025-02-05 12:36:13,479 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2025-02-05 12:36:13,479 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2025-02-05 12:36:13,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 12:36:13,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 12:36:13,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 12:36:13,523 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 12:36:13,524 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 12:36:13,608 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2025-02-05 12:36:13,608 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 12:36:13,613 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 12:36:13,618 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 12:36:13,618 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 12:36:13 BoogieIcfgContainer [2025-02-05 12:36:13,618 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 12:36:13,620 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 12:36:13,622 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 12:36:13,625 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 12:36:13,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 12:36:13" (1/3) ... [2025-02-05 12:36:13,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f7bca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 12:36:13, skipping insertion in model container [2025-02-05 12:36:13,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:13" (2/3) ... [2025-02-05 12:36:13,626 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f7bca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 12:36:13, skipping insertion in model container [2025-02-05 12:36:13,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 12:36:13" (3/3) ... [2025-02-05 12:36:13,627 INFO L128 eAbstractionObserver]: Analyzing ICFG newton_3_1.i [2025-02-05 12:36:13,639 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 12:36:13,641 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG newton_3_1.i that has 3 procedures, 26 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-02-05 12:36:13,676 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 12:36:13,683 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;@5af17145, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 12:36:13,683 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 12:36:13,686 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 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) [2025-02-05 12:36:13,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-02-05 12:36:13,690 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 12:36:13,690 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 12:36:13,690 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 12:36:13,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 12:36:13,694 INFO L85 PathProgramCache]: Analyzing trace with hash 560619692, now seen corresponding path program 1 times [2025-02-05 12:36:13,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 12:36:13,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911914427] [2025-02-05 12:36:13,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 12:36:13,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 12:36:13,754 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-05 12:36:13,765 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-05 12:36:13,766 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 12:36:13,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 12:36:13,798 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-05 12:36:13,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 12:36:13,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911914427] [2025-02-05 12:36:13,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911914427] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 12:36:13,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 12:36:13,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 12:36:13,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201734216] [2025-02-05 12:36:13,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 12:36:13,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-05 12:36:13,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 12:36:13,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-05 12:36:13,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 12:36:13,820 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 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 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2025-02-05 12:36:13,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 12:36:13,834 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2025-02-05 12:36:13,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-05 12:36:13,835 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 33 [2025-02-05 12:36:13,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 12:36:13,842 INFO L225 Difference]: With dead ends: 49 [2025-02-05 12:36:13,842 INFO L226 Difference]: Without dead ends: 22 [2025-02-05 12:36:13,845 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 [2025-02-05 12:36:13,847 INFO L435 NwaCegarLoop]: 29 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, 29 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 [2025-02-05 12:36:13,849 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 12:36:13,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-02-05 12:36:13,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2025-02-05 12:36:13,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 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) [2025-02-05 12:36:13,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2025-02-05 12:36:13,874 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 33 [2025-02-05 12:36:13,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 12:36:13,874 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2025-02-05 12:36:13,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2025-02-05 12:36:13,875 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2025-02-05 12:36:13,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-02-05 12:36:13,876 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 12:36:13,877 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 12:36:13,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 12:36:13,877 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 12:36:13,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 12:36:13,878 INFO L85 PathProgramCache]: Analyzing trace with hash 911419629, now seen corresponding path program 1 times [2025-02-05 12:36:13,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 12:36:13,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350085558] [2025-02-05 12:36:13,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 12:36:13,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 12:36:13,890 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-05 12:36:13,899 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-05 12:36:13,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 12:36:13,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-05 12:36:13,900 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-05 12:36:13,906 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-05 12:36:13,919 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-05 12:36:13,919 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 12:36:13,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-05 12:36:13,937 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-05 12:36:13,940 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-05 12:36:13,941 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-02-05 12:36:13,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 12:36:13,946 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-05 12:36:13,957 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-05 12:36:13,960 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.02 12:36:13 BoogieIcfgContainer [2025-02-05 12:36:13,960 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-05 12:36:13,960 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-05 12:36:13,961 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-05 12:36:13,961 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-05 12:36:13,961 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 12:36:13" (3/4) ... [2025-02-05 12:36:13,963 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-05 12:36:13,963 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-05 12:36:13,964 INFO L158 Benchmark]: Toolchain (without parser) took 752.42ms. Allocated memory is still 142.6MB. Free memory was 112.9MB in the beginning and 65.9MB in the end (delta: 47.0MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-02-05 12:36:13,964 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 12:36:13,964 INFO L158 Benchmark]: CACSL2BoogieTranslator took 164.17ms. Allocated memory is still 142.6MB. Free memory was 112.4MB in the beginning and 101.4MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-05 12:36:13,964 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.47ms. Allocated memory is still 142.6MB. Free memory was 101.4MB in the beginning and 100.4MB in the end (delta: 978.1kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 12:36:13,965 INFO L158 Benchmark]: Boogie Preprocessor took 27.43ms. Allocated memory is still 142.6MB. Free memory was 100.4MB in the beginning and 99.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 12:36:13,965 INFO L158 Benchmark]: IcfgBuilder took 190.32ms. Allocated memory is still 142.6MB. Free memory was 98.9MB in the beginning and 88.0MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-05 12:36:13,966 INFO L158 Benchmark]: TraceAbstraction took 340.09ms. Allocated memory is still 142.6MB. Free memory was 87.5MB in the beginning and 65.9MB in the end (delta: 21.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-05 12:36:13,966 INFO L158 Benchmark]: Witness Printer took 2.83ms. Allocated memory is still 142.6MB. Free memory is still 65.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 12:36:13,967 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 164.17ms. Allocated memory is still 142.6MB. Free memory was 112.4MB in the beginning and 101.4MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.47ms. Allocated memory is still 142.6MB. Free memory was 101.4MB in the beginning and 100.4MB in the end (delta: 978.1kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.43ms. Allocated memory is still 142.6MB. Free memory was 100.4MB in the beginning and 99.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 190.32ms. Allocated memory is still 142.6MB. Free memory was 98.9MB in the beginning and 88.0MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 340.09ms. Allocated memory is still 142.6MB. Free memory was 87.5MB in the beginning and 65.9MB in the end (delta: 21.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 2.83ms. Allocated memory is still 142.6MB. Free memory is still 65.9MB. 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: 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, overapproximation of someBinaryArithmeticFLOAToperation at line 42, overapproximation of someBinaryArithmeticFLOAToperation at line 29, overapproximation of someBinaryArithmeticFLOAToperation at line 44, overapproximation of someBinaryArithmeticFLOAToperation at line 34. Possible FailurePath: [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN > -0.2f && IN < 0.2f) [L24] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN > -0.2f && IN < 0.2f) [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; VAL [\old(x)=53] [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; VAL [\old(x)=53] [L42] RET, EXPR fp(IN) VAL [IN=53] [L42] float x = IN - f(IN)/fp(IN); [L44] 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; VAL [\old(x)=55] [L44] RET, EXPR f(x) VAL [IN=53, x=55] [L44] 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; VAL [\old(x)=55] [L44] RET, EXPR fp(x) VAL [IN=53, x=55] [L44] x = x - f(x)/fp(x) [L46] 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; VAL [\old(x)=54] [L46] RET, EXPR f(x) VAL [IN=53, x=54] [L46] 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; VAL [\old(x)=54] [L46] RET, EXPR fp(x) VAL [IN=53, x=54] [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, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 3, 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, 29 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, 29 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=26occurred 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, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 32 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 18/18 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 [2025-02-05 12:36:13,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_3_1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 487cb753ab668f0dc3893a3ab2fa6b5020a9a953baa1eebb275c5ff36ca3ae95 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 12:36:15,762 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 12:36:15,839 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2025-02-05 12:36:15,845 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 12:36:15,845 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 12:36:15,866 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 12:36:15,867 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 12:36:15,867 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 12:36:15,868 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 12:36:15,868 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 12:36:15,869 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 12:36:15,869 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 12:36:15,869 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 12:36:15,869 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 12:36:15,869 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 12:36:15,870 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 12:36:15,870 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 12:36:15,870 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 12:36:15,870 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 12:36:15,870 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 12:36:15,870 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 12:36:15,870 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 12:36:15,870 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 12:36:15,870 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-05 12:36:15,871 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-05 12:36:15,871 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-05 12:36:15,871 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 12:36:15,871 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 12:36:15,871 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 12:36:15,871 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 12:36:15,871 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 12:36:15,871 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 12:36:15,872 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 12:36:15,872 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 12:36:15,872 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 12:36:15,872 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 12:36:15,872 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 12:36:15,872 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 12:36:15,872 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 12:36:15,872 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-05 12:36:15,872 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-05 12:36:15,872 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 12:36:15,872 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 12:36:15,872 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 12:36:15,872 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 12:36:15,872 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 -> 487cb753ab668f0dc3893a3ab2fa6b5020a9a953baa1eebb275c5ff36ca3ae95 [2025-02-05 12:36:16,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 12:36:16,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 12:36:16,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 12:36:16,101 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 12:36:16,101 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 12:36:16,102 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_3_1.i [2025-02-05 12:36:17,291 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/df2415854/b80f260e5b5c45928e5cfbd6d4fe7dff/FLAGf81d18b2b [2025-02-05 12:36:17,464 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 12:36:17,465 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_1.i [2025-02-05 12:36:17,472 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/df2415854/b80f260e5b5c45928e5cfbd6d4fe7dff/FLAGf81d18b2b [2025-02-05 12:36:17,488 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/df2415854/b80f260e5b5c45928e5cfbd6d4fe7dff [2025-02-05 12:36:17,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 12:36:17,491 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 12:36:17,492 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 12:36:17,492 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 12:36:17,496 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 12:36:17,497 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 12:36:17" (1/1) ... [2025-02-05 12:36:17,498 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30b8f2cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:17, skipping insertion in model container [2025-02-05 12:36:17,499 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 12:36:17" (1/1) ... [2025-02-05 12:36:17,512 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 12:36:17,631 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_1.i[1764,1777] [2025-02-05 12:36:17,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 12:36:17,649 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 12:36:17,665 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_1.i[1764,1777] [2025-02-05 12:36:17,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 12:36:17,678 INFO L204 MainTranslator]: Completed translation [2025-02-05 12:36:17,680 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:17 WrapperNode [2025-02-05 12:36:17,680 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 12:36:17,681 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 12:36:17,681 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 12:36:17,682 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 12:36:17,686 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:17" (1/1) ... [2025-02-05 12:36:17,697 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:17" (1/1) ... [2025-02-05 12:36:17,711 INFO L138 Inliner]: procedures = 18, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2025-02-05 12:36:17,712 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 12:36:17,712 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 12:36:17,712 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 12:36:17,713 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 12:36:17,718 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:17" (1/1) ... [2025-02-05 12:36:17,719 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:17" (1/1) ... [2025-02-05 12:36:17,721 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:17" (1/1) ... [2025-02-05 12:36:17,732 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]. [2025-02-05 12:36:17,733 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:17" (1/1) ... [2025-02-05 12:36:17,733 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:17" (1/1) ... [2025-02-05 12:36:17,740 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:17" (1/1) ... [2025-02-05 12:36:17,745 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:17" (1/1) ... [2025-02-05 12:36:17,746 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:17" (1/1) ... [2025-02-05 12:36:17,747 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:17" (1/1) ... [2025-02-05 12:36:17,748 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 12:36:17,752 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 12:36:17,752 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 12:36:17,752 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 12:36:17,753 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:17" (1/1) ... [2025-02-05 12:36:17,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 12:36:17,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 12:36:17,784 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) [2025-02-05 12:36:17,787 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 [2025-02-05 12:36:17,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 12:36:17,806 INFO L130 BoogieDeclarations]: Found specification of procedure f [2025-02-05 12:36:17,806 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2025-02-05 12:36:17,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-05 12:36:17,806 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2025-02-05 12:36:17,806 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2025-02-05 12:36:17,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 12:36:17,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 12:36:17,860 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 12:36:17,862 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 12:36:31,345 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2025-02-05 12:36:31,345 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 12:36:31,352 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 12:36:31,353 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 12:36:31,353 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 12:36:31 BoogieIcfgContainer [2025-02-05 12:36:31,353 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 12:36:31,356 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 12:36:31,356 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 12:36:31,360 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 12:36:31,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 12:36:17" (1/3) ... [2025-02-05 12:36:31,361 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f5e49c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 12:36:31, skipping insertion in model container [2025-02-05 12:36:31,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:17" (2/3) ... [2025-02-05 12:36:31,361 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f5e49c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 12:36:31, skipping insertion in model container [2025-02-05 12:36:31,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 12:36:31" (3/3) ... [2025-02-05 12:36:31,363 INFO L128 eAbstractionObserver]: Analyzing ICFG newton_3_1.i [2025-02-05 12:36:31,375 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 12:36:31,376 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG newton_3_1.i that has 3 procedures, 26 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-02-05 12:36:31,409 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 12:36:31,417 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;@79b742f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 12:36:31,417 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 12:36:31,420 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 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) [2025-02-05 12:36:31,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-02-05 12:36:31,424 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 12:36:31,425 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 12:36:31,425 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 12:36:31,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 12:36:31,428 INFO L85 PathProgramCache]: Analyzing trace with hash 560619692, now seen corresponding path program 1 times [2025-02-05 12:36:31,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-05 12:36:31,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1551511607] [2025-02-05 12:36:31,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 12:36:31,436 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 [2025-02-05 12:36:31,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2025-02-05 12:36:31,438 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) [2025-02-05 12:36:31,439 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 [2025-02-05 12:36:31,486 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-05 12:36:33,982 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-05 12:36:33,983 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 12:36:33,983 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 12:36:34,075 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-05 12:36:34,080 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 12:36:34,097 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-05 12:36:34,097 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 12:36:34,098 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-05 12:36:34,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1551511607] [2025-02-05 12:36:34,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1551511607] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 12:36:34,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 12:36:34,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 12:36:34,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539302300] [2025-02-05 12:36:34,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 12:36:34,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-05 12:36:34,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-05 12:36:34,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-05 12:36:34,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 12:36:34,116 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 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 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2025-02-05 12:36:34,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 12:36:34,127 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2025-02-05 12:36:34,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-05 12:36:34,128 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 33 [2025-02-05 12:36:34,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 12:36:34,131 INFO L225 Difference]: With dead ends: 49 [2025-02-05 12:36:34,132 INFO L226 Difference]: Without dead ends: 22 [2025-02-05 12:36:34,133 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 12:36:34,135 INFO L435 NwaCegarLoop]: 29 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, 29 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 [2025-02-05 12:36:34,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 12:36:34,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-02-05 12:36:34,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2025-02-05 12:36:34,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 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) [2025-02-05 12:36:34,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2025-02-05 12:36:34,157 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 33 [2025-02-05 12:36:34,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 12:36:34,157 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2025-02-05 12:36:34,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2025-02-05 12:36:34,157 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2025-02-05 12:36:34,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-02-05 12:36:34,158 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 12:36:34,158 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 12:36:34,221 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 [2025-02-05 12:36:34,359 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 [2025-02-05 12:36:34,359 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 12:36:34,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 12:36:34,360 INFO L85 PathProgramCache]: Analyzing trace with hash 911419629, now seen corresponding path program 1 times [2025-02-05 12:36:34,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-05 12:36:34,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [28500019] [2025-02-05 12:36:34,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 12:36:34,361 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 [2025-02-05 12:36:34,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2025-02-05 12:36:34,363 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) [2025-02-05 12:36:34,364 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 [2025-02-05 12:36:34,385 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes.