./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_2_6.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_2_6.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 2e48881fddee372e5aad046f2f519f188ef8a27fb46b046a6e106c678419a225 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 12:35:58,956 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 12:35:59,005 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 12:35:59,011 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 12:35:59,012 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 12:35:59,033 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 12:35:59,033 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 12:35:59,033 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 12:35:59,034 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 12:35:59,034 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 12:35:59,034 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 12:35:59,034 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 12:35:59,034 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 12:35:59,034 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 12:35:59,034 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 12:35:59,034 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 12:35:59,034 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 12:35:59,034 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 12:35:59,034 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 12:35:59,034 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 12:35:59,034 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 12:35:59,034 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 12:35:59,035 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 12:35:59,035 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 12:35:59,035 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 12:35:59,035 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 12:35:59,035 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 12:35:59,035 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 12:35:59,035 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 12:35:59,035 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 12:35:59,035 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 12:35:59,035 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 12:35:59,035 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 12:35:59,035 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 12:35:59,035 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 12:35:59,035 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 12:35:59,035 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 12:35:59,037 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 12:35:59,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 12:35:59,037 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 12:35:59,038 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 12:35:59,038 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 12:35:59,038 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 12:35:59,038 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 -> 2e48881fddee372e5aad046f2f519f188ef8a27fb46b046a6e106c678419a225 [2025-02-05 12:35:59,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 12:35:59,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 12:35:59,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 12:35:59,302 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 12:35:59,302 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 12:35:59,304 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_2_6.i [2025-02-05 12:36:00,575 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6a3acca17/7acbba0c33e64ed49027b4c6bc7033f5/FLAGab8e4adc1 [2025-02-05 12:36:00,853 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 12:36:00,854 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_6.i [2025-02-05 12:36:00,862 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6a3acca17/7acbba0c33e64ed49027b4c6bc7033f5/FLAGab8e4adc1 [2025-02-05 12:36:01,124 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6a3acca17/7acbba0c33e64ed49027b4c6bc7033f5 [2025-02-05 12:36:01,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 12:36:01,127 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 12:36:01,128 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 12:36:01,128 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 12:36:01,132 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 12:36:01,133 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 12:36:01" (1/1) ... [2025-02-05 12:36:01,134 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55626e04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:01, skipping insertion in model container [2025-02-05 12:36:01,134 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 12:36:01" (1/1) ... [2025-02-05 12:36:01,148 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 12:36:01,298 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_2_6.i[1743,1756] [2025-02-05 12:36:01,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 12:36:01,311 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 12:36:01,325 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_2_6.i[1743,1756] [2025-02-05 12:36:01,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 12:36:01,335 INFO L204 MainTranslator]: Completed translation [2025-02-05 12:36:01,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:01 WrapperNode [2025-02-05 12:36:01,335 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 12:36:01,336 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 12:36:01,336 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 12:36:01,336 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 12:36:01,341 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:01" (1/1) ... [2025-02-05 12:36:01,346 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:01" (1/1) ... [2025-02-05 12:36:01,356 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 29 [2025-02-05 12:36:01,356 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 12:36:01,357 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 12:36:01,357 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 12:36:01,357 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 12:36:01,362 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:01" (1/1) ... [2025-02-05 12:36:01,362 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:01" (1/1) ... [2025-02-05 12:36:01,363 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:01" (1/1) ... [2025-02-05 12:36:01,369 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 12:36:01,370 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:01" (1/1) ... [2025-02-05 12:36:01,370 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:01" (1/1) ... [2025-02-05 12:36:01,372 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:01" (1/1) ... [2025-02-05 12:36:01,373 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:01" (1/1) ... [2025-02-05 12:36:01,373 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:01" (1/1) ... [2025-02-05 12:36:01,373 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:01" (1/1) ... [2025-02-05 12:36:01,374 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 12:36:01,376 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 12:36:01,376 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 12:36:01,376 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 12:36:01,376 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:01" (1/1) ... [2025-02-05 12:36:01,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 12:36:01,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 12:36:01,400 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 12:36:01,403 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 12:36:01,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 12:36:01,418 INFO L130 BoogieDeclarations]: Found specification of procedure f [2025-02-05 12:36:01,418 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2025-02-05 12:36:01,419 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2025-02-05 12:36:01,419 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2025-02-05 12:36:01,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 12:36:01,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 12:36:01,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 12:36:01,455 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 12:36:01,457 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 12:36:01,539 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-02-05 12:36:01,539 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 12:36:01,545 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 12:36:01,545 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 12:36:01,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 12:36:01 BoogieIcfgContainer [2025-02-05 12:36:01,545 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 12:36:01,547 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 12:36:01,547 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 12:36:01,550 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 12:36:01,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 12:36:01" (1/3) ... [2025-02-05 12:36:01,551 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42444297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 12:36:01, skipping insertion in model container [2025-02-05 12:36:01,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:01" (2/3) ... [2025-02-05 12:36:01,551 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42444297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 12:36:01, skipping insertion in model container [2025-02-05 12:36:01,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 12:36:01" (3/3) ... [2025-02-05 12:36:01,552 INFO L128 eAbstractionObserver]: Analyzing ICFG newton_2_6.i [2025-02-05 12:36:01,562 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 12:36:01,564 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG newton_2_6.i that has 3 procedures, 23 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-02-05 12:36:01,599 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 12:36:01,607 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;@c98f923, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 12:36:01,608 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 12:36:01,610 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-05 12:36:01,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-05 12:36:01,614 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 12:36:01,615 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 12:36:01,615 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 12:36:01,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 12:36:01,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1589351237, now seen corresponding path program 1 times [2025-02-05 12:36:01,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 12:36:01,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001866499] [2025-02-05 12:36:01,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 12:36:01,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 12:36:01,666 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-05 12:36:01,674 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-05 12:36:01,675 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 12:36:01,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 12:36:01,702 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-05 12:36:01,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 12:36:01,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001866499] [2025-02-05 12:36:01,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001866499] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 12:36:01,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 12:36:01,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 12:36:01,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477709807] [2025-02-05 12:36:01,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 12:36:01,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-05 12:36:01,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 12:36:01,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-05 12:36:01,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 12:36:01,727 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-02-05 12:36:01,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 12:36:01,736 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2025-02-05 12:36:01,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-05 12:36:01,737 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2025-02-05 12:36:01,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 12:36:01,740 INFO L225 Difference]: With dead ends: 43 [2025-02-05 12:36:01,741 INFO L226 Difference]: Without dead ends: 19 [2025-02-05 12:36:01,742 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 12:36:01,744 INFO L435 NwaCegarLoop]: 24 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, 24 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 12:36:01,745 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 12:36:01,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2025-02-05 12:36:01,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2025-02-05 12:36:01,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.0) internal successors, (12), 12 states have internal predecessors, (12), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-05 12:36:01,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2025-02-05 12:36:01,764 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 24 [2025-02-05 12:36:01,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 12:36:01,765 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2025-02-05 12:36:01,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-02-05 12:36:01,765 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2025-02-05 12:36:01,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-05 12:36:01,766 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 12:36:01,766 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 12:36:01,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 12:36:01,766 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 12:36:01,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 12:36:01,766 INFO L85 PathProgramCache]: Analyzing trace with hash 667559770, now seen corresponding path program 1 times [2025-02-05 12:36:01,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 12:36:01,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933911638] [2025-02-05 12:36:01,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 12:36:01,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 12:36:01,773 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-05 12:36:01,779 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-05 12:36:01,781 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 12:36:01,781 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-05 12:36:01,781 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-05 12:36:01,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-05 12:36:01,794 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-05 12:36:01,794 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 12:36:01,794 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-05 12:36:01,806 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-05 12:36:01,807 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-05 12:36:01,808 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-02-05 12:36:01,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 12:36:01,813 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-05 12:36:01,827 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-05 12:36:01,829 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.02 12:36:01 BoogieIcfgContainer [2025-02-05 12:36:01,830 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-05 12:36:01,830 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-05 12:36:01,830 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-05 12:36:01,830 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-05 12:36:01,831 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 12:36:01" (3/4) ... [2025-02-05 12:36:01,832 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-05 12:36:01,833 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-05 12:36:01,834 INFO L158 Benchmark]: Toolchain (without parser) took 706.52ms. Allocated memory is still 142.6MB. Free memory was 106.6MB in the beginning and 62.0MB in the end (delta: 44.7MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-02-05 12:36:01,834 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 167.8MB. Free memory is still 93.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 12:36:01,834 INFO L158 Benchmark]: CACSL2BoogieTranslator took 207.53ms. Allocated memory is still 142.6MB. Free memory was 106.6MB in the beginning and 95.5MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-05 12:36:01,834 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.07ms. Allocated memory is still 142.6MB. Free memory was 95.5MB in the beginning and 95.1MB in the end (delta: 319.2kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 12:36:01,835 INFO L158 Benchmark]: Boogie Preprocessor took 17.50ms. Allocated memory is still 142.6MB. Free memory was 95.1MB in the beginning and 93.1MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-05 12:36:01,835 INFO L158 Benchmark]: IcfgBuilder took 169.40ms. Allocated memory is still 142.6MB. Free memory was 93.1MB in the beginning and 82.7MB in the end (delta: 10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-05 12:36:01,835 INFO L158 Benchmark]: TraceAbstraction took 282.89ms. Allocated memory is still 142.6MB. Free memory was 81.7MB in the beginning and 62.0MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-05 12:36:01,835 INFO L158 Benchmark]: Witness Printer took 2.83ms. Allocated memory is still 142.6MB. Free memory is still 62.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 12:36:01,836 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 167.8MB. Free memory is still 93.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 207.53ms. Allocated memory is still 142.6MB. Free memory was 106.6MB in the beginning and 95.5MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.07ms. Allocated memory is still 142.6MB. Free memory was 95.5MB in the beginning and 95.1MB in the end (delta: 319.2kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 17.50ms. Allocated memory is still 142.6MB. Free memory was 95.1MB in the beginning and 93.1MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 169.40ms. Allocated memory is still 142.6MB. Free memory was 93.1MB in the beginning and 82.7MB in the end (delta: 10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 282.89ms. Allocated memory is still 142.6MB. Free memory was 81.7MB in the beginning and 62.0MB in the end (delta: 19.8MB). 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 62.0MB. 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 44, overapproximation of someBinaryArithmeticFLOAToperation at line 29, overapproximation of someBinaryArithmeticFLOAToperation at line 42, overapproximation of someBinaryArithmeticFLOAToperation at line 34. Possible FailurePath: [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN > -1.2f && IN < 1.2f) [L24] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN > -1.2f && IN < 1.2f) [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)=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] [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; VAL [\old(x)=54] [L44] RET, EXPR fp(x) VAL [IN=53, x=54] [L44] 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, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 2, 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, 24 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, 24 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=23occurred 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, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 23 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 6/6 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 12:36:01,848 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_2_6.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 2e48881fddee372e5aad046f2f519f188ef8a27fb46b046a6e106c678419a225 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 12:36:03,896 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 12:36:03,992 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2025-02-05 12:36:04,004 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 12:36:04,004 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 12:36:04,031 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 12:36:04,032 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 12:36:04,032 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 12:36:04,032 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 12:36:04,032 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 12:36:04,033 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 12:36:04,033 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 12:36:04,033 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 12:36:04,033 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 12:36:04,033 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 12:36:04,033 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 12:36:04,033 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 12:36:04,033 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 12:36:04,033 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 12:36:04,034 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 12:36:04,034 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 12:36:04,034 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 12:36:04,034 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 12:36:04,034 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-05 12:36:04,034 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-05 12:36:04,034 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-05 12:36:04,034 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 12:36:04,034 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 12:36:04,034 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 12:36:04,034 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 12:36:04,035 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 12:36:04,035 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 12:36:04,035 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 12:36:04,035 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 12:36:04,035 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 12:36:04,035 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 12:36:04,035 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 12:36:04,035 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 12:36:04,035 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 12:36:04,035 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-05 12:36:04,035 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-05 12:36:04,036 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 12:36:04,036 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 12:36:04,036 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 12:36:04,036 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 12:36:04,036 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 -> 2e48881fddee372e5aad046f2f519f188ef8a27fb46b046a6e106c678419a225 [2025-02-05 12:36:04,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 12:36:04,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 12:36:04,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 12:36:04,289 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 12:36:04,289 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 12:36:04,290 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_2_6.i [2025-02-05 12:36:05,502 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/73d910e57/52e5ae007d8d477785e2dd6e9ba65a93/FLAG5f49c5475 [2025-02-05 12:36:05,724 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 12:36:05,724 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_6.i [2025-02-05 12:36:05,733 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/73d910e57/52e5ae007d8d477785e2dd6e9ba65a93/FLAG5f49c5475 [2025-02-05 12:36:06,091 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/73d910e57/52e5ae007d8d477785e2dd6e9ba65a93 [2025-02-05 12:36:06,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 12:36:06,095 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 12:36:06,096 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 12:36:06,098 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 12:36:06,102 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 12:36:06,103 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 12:36:06" (1/1) ... [2025-02-05 12:36:06,103 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c401f1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:06, skipping insertion in model container [2025-02-05 12:36:06,106 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 12:36:06" (1/1) ... [2025-02-05 12:36:06,123 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 12:36:06,289 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_2_6.i[1743,1756] [2025-02-05 12:36:06,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 12:36:06,304 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 12:36:06,321 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_2_6.i[1743,1756] [2025-02-05 12:36:06,322 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 12:36:06,337 INFO L204 MainTranslator]: Completed translation [2025-02-05 12:36:06,339 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:06 WrapperNode [2025-02-05 12:36:06,339 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 12:36:06,340 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 12:36:06,340 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 12:36:06,341 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 12:36:06,345 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:06" (1/1) ... [2025-02-05 12:36:06,353 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:06" (1/1) ... [2025-02-05 12:36:06,367 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 30 [2025-02-05 12:36:06,368 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 12:36:06,369 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 12:36:06,369 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 12:36:06,369 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 12:36:06,374 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:06" (1/1) ... [2025-02-05 12:36:06,376 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:06" (1/1) ... [2025-02-05 12:36:06,378 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:06" (1/1) ... [2025-02-05 12:36:06,392 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 12:36:06,393 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:06" (1/1) ... [2025-02-05 12:36:06,393 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:06" (1/1) ... [2025-02-05 12:36:06,403 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:06" (1/1) ... [2025-02-05 12:36:06,404 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:06" (1/1) ... [2025-02-05 12:36:06,407 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:06" (1/1) ... [2025-02-05 12:36:06,408 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:06" (1/1) ... [2025-02-05 12:36:06,411 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 12:36:06,413 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 12:36:06,413 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 12:36:06,413 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 12:36:06,415 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:06" (1/1) ... [2025-02-05 12:36:06,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 12:36:06,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 12:36:06,444 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 12:36:06,450 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 12:36:06,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 12:36:06,470 INFO L130 BoogieDeclarations]: Found specification of procedure f [2025-02-05 12:36:06,470 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2025-02-05 12:36:06,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-05 12:36:06,471 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2025-02-05 12:36:06,471 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2025-02-05 12:36:06,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 12:36:06,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 12:36:06,527 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 12:36:06,528 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 12:36:19,656 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2025-02-05 12:36:19,656 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 12:36:19,665 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 12:36:19,665 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 12:36:19,666 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 12:36:19 BoogieIcfgContainer [2025-02-05 12:36:19,666 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 12:36:19,669 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 12:36:19,670 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 12:36:19,673 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 12:36:19,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 12:36:06" (1/3) ... [2025-02-05 12:36:19,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b184964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 12:36:19, skipping insertion in model container [2025-02-05 12:36:19,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:36:06" (2/3) ... [2025-02-05 12:36:19,675 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b184964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 12:36:19, skipping insertion in model container [2025-02-05 12:36:19,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 12:36:19" (3/3) ... [2025-02-05 12:36:19,677 INFO L128 eAbstractionObserver]: Analyzing ICFG newton_2_6.i [2025-02-05 12:36:19,689 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 12:36:19,691 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG newton_2_6.i that has 3 procedures, 23 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-02-05 12:36:19,733 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 12:36:19,745 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;@4da443f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 12:36:19,745 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 12:36:19,750 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-05 12:36:19,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-05 12:36:19,754 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 12:36:19,755 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 12:36:19,755 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 12:36:19,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 12:36:19,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1589351237, now seen corresponding path program 1 times [2025-02-05 12:36:19,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-05 12:36:19,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285888651] [2025-02-05 12:36:19,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 12:36:19,769 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 12:36:19,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2025-02-05 12:36:19,772 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 12:36:19,773 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 12:36:19,809 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-05 12:36:21,526 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-05 12:36:21,526 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 12:36:21,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 12:36:21,588 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-05 12:36:21,591 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 12:36:21,608 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-05 12:36:21,609 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 12:36:21,609 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-05 12:36:21,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285888651] [2025-02-05 12:36:21,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285888651] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 12:36:21,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 12:36:21,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 12:36:21,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411153016] [2025-02-05 12:36:21,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 12:36:21,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-05 12:36:21,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-05 12:36:21,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-05 12:36:21,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 12:36:21,626 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-02-05 12:36:21,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 12:36:21,636 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2025-02-05 12:36:21,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-05 12:36:21,637 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2025-02-05 12:36:21,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 12:36:21,641 INFO L225 Difference]: With dead ends: 43 [2025-02-05 12:36:21,641 INFO L226 Difference]: Without dead ends: 19 [2025-02-05 12:36:21,643 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 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 12:36:21,644 INFO L435 NwaCegarLoop]: 24 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, 24 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 12:36:21,645 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 12:36:21,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2025-02-05 12:36:21,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2025-02-05 12:36:21,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.0) internal successors, (12), 12 states have internal predecessors, (12), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-05 12:36:21,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2025-02-05 12:36:21,667 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 24 [2025-02-05 12:36:21,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 12:36:21,667 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2025-02-05 12:36:21,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-02-05 12:36:21,668 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2025-02-05 12:36:21,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-05 12:36:21,669 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 12:36:21,669 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 12:36:21,719 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 12:36:21,870 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 12:36:21,870 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 12:36:21,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 12:36:21,871 INFO L85 PathProgramCache]: Analyzing trace with hash 667559770, now seen corresponding path program 1 times [2025-02-05 12:36:21,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-05 12:36:21,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093898452] [2025-02-05 12:36:21,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 12:36:21,872 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 12:36:21,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2025-02-05 12:36:21,874 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 12:36:21,875 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 12:36:21,903 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes.