./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_3_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 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_4.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 0c5600740103c77f2bf443c7f5a57c196b00730939a706a857dd583d49faca41 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 00:45:01,723 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 00:45:01,786 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 00:45:01,789 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 00:45:01,789 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 00:45:01,806 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 00:45:01,807 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 00:45:01,807 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 00:45:01,808 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 00:45:01,808 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 00:45:01,808 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 00:45:01,809 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 00:45:01,809 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 00:45:01,809 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 00:45:01,809 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 00:45:01,810 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 00:45:01,810 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 00:45:01,810 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 00:45:01,810 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 00:45:01,810 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 00:45:01,810 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 00:45:01,810 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 00:45:01,810 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 00:45:01,810 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 00:45:01,810 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 00:45:01,810 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 00:45:01,810 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 00:45:01,810 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 00:45:01,810 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 00:45:01,810 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 00:45:01,811 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 00:45:01,811 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 00:45:01,811 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 00:45:01,811 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 00:45:01,811 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 00:45:01,811 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 00:45:01,811 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 00:45:01,811 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 00:45:01,811 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 00:45:01,812 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 00:45:01,812 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 00:45:01,812 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 00:45:01,812 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 00:45:01,812 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 00:45:01,812 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 00:45:01,812 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 00:45:01,812 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 00:45:01,812 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 00:45:01,812 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 -> 0c5600740103c77f2bf443c7f5a57c196b00730939a706a857dd583d49faca41 [2025-01-09 00:45:02,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 00:45:02,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 00:45:02,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 00:45:02,055 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 00:45:02,055 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 00:45:02,056 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_3_4.i [2025-01-09 00:45:03,226 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bd4eb149e/5c4b4cebff8d4fbaacaedb554291f049/FLAG5795f0b85 [2025-01-09 00:45:03,467 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 00:45:03,467 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_4.i [2025-01-09 00:45:03,473 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bd4eb149e/5c4b4cebff8d4fbaacaedb554291f049/FLAG5795f0b85 [2025-01-09 00:45:03,818 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bd4eb149e/5c4b4cebff8d4fbaacaedb554291f049 [2025-01-09 00:45:03,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 00:45:03,822 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 00:45:03,824 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 00:45:03,824 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 00:45:03,827 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 00:45:03,828 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 12:45:03" (1/1) ... [2025-01-09 00:45:03,829 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2959b12a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:45:03, skipping insertion in model container [2025-01-09 00:45:03,829 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 12:45:03" (1/1) ... [2025-01-09 00:45:03,840 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 00:45:03,983 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_4.i[1764,1777] [2025-01-09 00:45:03,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 00:45:03,995 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 00:45:04,011 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_4.i[1764,1777] [2025-01-09 00:45:04,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 00:45:04,023 INFO L204 MainTranslator]: Completed translation [2025-01-09 00:45:04,025 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:45:04 WrapperNode [2025-01-09 00:45:04,025 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 00:45:04,026 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 00:45:04,027 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 00:45:04,027 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 00:45:04,033 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:45:04" (1/1) ... [2025-01-09 00:45:04,038 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:45:04" (1/1) ... [2025-01-09 00:45:04,050 INFO L138 Inliner]: procedures = 17, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2025-01-09 00:45:04,051 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 00:45:04,051 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 00:45:04,052 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 00:45:04,052 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 00:45:04,057 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:45:04" (1/1) ... [2025-01-09 00:45:04,058 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:45:04" (1/1) ... [2025-01-09 00:45:04,059 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:45:04" (1/1) ... [2025-01-09 00:45:04,071 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]. [2025-01-09 00:45:04,072 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:45:04" (1/1) ... [2025-01-09 00:45:04,072 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:45:04" (1/1) ... [2025-01-09 00:45:04,075 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:45:04" (1/1) ... [2025-01-09 00:45:04,076 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:45:04" (1/1) ... [2025-01-09 00:45:04,077 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:45:04" (1/1) ... [2025-01-09 00:45:04,077 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:45:04" (1/1) ... [2025-01-09 00:45:04,080 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:45:04" (1/1) ... [2025-01-09 00:45:04,080 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 00:45:04,085 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 00:45:04,085 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 00:45:04,085 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 00:45:04,086 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:45:04" (1/1) ... [2025-01-09 00:45:04,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 00:45:04,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 00:45:04,113 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) [2025-01-09 00:45:04,125 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 [2025-01-09 00:45:04,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 00:45:04,140 INFO L130 BoogieDeclarations]: Found specification of procedure f [2025-01-09 00:45:04,140 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2025-01-09 00:45:04,140 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2025-01-09 00:45:04,140 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2025-01-09 00:45:04,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 00:45:04,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 00:45:04,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 00:45:04,180 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 00:45:04,181 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 00:45:04,284 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2025-01-09 00:45:04,284 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 00:45:04,291 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 00:45:04,293 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 00:45:04,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 12:45:04 BoogieIcfgContainer [2025-01-09 00:45:04,293 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 00:45:04,294 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 00:45:04,295 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 00:45:04,298 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 00:45:04,298 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 12:45:03" (1/3) ... [2025-01-09 00:45:04,299 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5677eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 12:45:04, skipping insertion in model container [2025-01-09 00:45:04,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:45:04" (2/3) ... [2025-01-09 00:45:04,300 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5677eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 12:45:04, skipping insertion in model container [2025-01-09 00:45:04,300 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 12:45:04" (3/3) ... [2025-01-09 00:45:04,301 INFO L128 eAbstractionObserver]: Analyzing ICFG newton_3_4.i [2025-01-09 00:45:04,312 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 00:45:04,315 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG newton_3_4.i that has 3 procedures, 26 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-01-09 00:45:04,364 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 00:45:04,374 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;@66d53443, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 00:45:04,375 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 00:45:04,380 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) [2025-01-09 00:45:04,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-01-09 00:45:04,385 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 00:45:04,385 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] [2025-01-09 00:45:04,386 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 00:45:04,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 00:45:04,390 INFO L85 PathProgramCache]: Analyzing trace with hash 694828395, now seen corresponding path program 1 times [2025-01-09 00:45:04,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 00:45:04,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382162656] [2025-01-09 00:45:04,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 00:45:04,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 00:45:04,450 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-01-09 00:45:04,458 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-01-09 00:45:04,458 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 00:45:04,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 00:45:04,483 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-01-09 00:45:04,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 00:45:04,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382162656] [2025-01-09 00:45:04,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382162656] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 00:45:04,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 00:45:04,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 00:45:04,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82720157] [2025-01-09 00:45:04,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 00:45:04,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 00:45:04,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 00:45:04,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 00:45:04,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 00:45:04,501 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) [2025-01-09 00:45:04,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 00:45:04,512 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2025-01-09 00:45:04,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 00:45:04,513 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 [2025-01-09 00:45:04,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 00:45:04,516 INFO L225 Difference]: With dead ends: 49 [2025-01-09 00:45:04,516 INFO L226 Difference]: Without dead ends: 22 [2025-01-09 00:45:04,518 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 [2025-01-09 00:45:04,520 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 [2025-01-09 00:45:04,520 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] [2025-01-09 00:45:04,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-01-09 00:45:04,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2025-01-09 00:45:04,538 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) [2025-01-09 00:45:04,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2025-01-09 00:45:04,541 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 33 [2025-01-09 00:45:04,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 00:45:04,541 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2025-01-09 00:45:04,542 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) [2025-01-09 00:45:04,542 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2025-01-09 00:45:04,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-01-09 00:45:04,543 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 00:45:04,543 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] [2025-01-09 00:45:04,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 00:45:04,543 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 00:45:04,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 00:45:04,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1396428269, now seen corresponding path program 1 times [2025-01-09 00:45:04,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 00:45:04,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041125801] [2025-01-09 00:45:04,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 00:45:04,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 00:45:04,551 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-01-09 00:45:04,557 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-01-09 00:45:04,557 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 00:45:04,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 00:45:04,557 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-09 00:45:04,560 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-01-09 00:45:04,568 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-01-09 00:45:04,568 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 00:45:04,569 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 00:45:04,581 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-09 00:45:04,584 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-09 00:45:04,586 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-01-09 00:45:04,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 00:45:04,590 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-01-09 00:45:04,602 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-09 00:45:04,604 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 12:45:04 BoogieIcfgContainer [2025-01-09 00:45:04,604 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-09 00:45:04,605 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-09 00:45:04,605 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-09 00:45:04,605 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-09 00:45:04,606 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 12:45:04" (3/4) ... [2025-01-09 00:45:04,607 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-01-09 00:45:04,608 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-09 00:45:04,608 INFO L158 Benchmark]: Toolchain (without parser) took 786.12ms. Allocated memory is still 167.8MB. Free memory was 133.8MB in the beginning and 86.7MB in the end (delta: 47.0MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-01-09 00:45:04,608 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 218.1MB. Free memory is still 131.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 00:45:04,609 INFO L158 Benchmark]: CACSL2BoogieTranslator took 201.74ms. Allocated memory is still 167.8MB. Free memory was 133.4MB in the beginning and 122.5MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 00:45:04,609 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.65ms. Allocated memory is still 167.8MB. Free memory was 122.5MB in the beginning and 121.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 00:45:04,609 INFO L158 Benchmark]: Boogie Preprocessor took 32.84ms. Allocated memory is still 167.8MB. Free memory was 121.1MB in the beginning and 119.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 00:45:04,609 INFO L158 Benchmark]: RCFGBuilder took 208.53ms. Allocated memory is still 167.8MB. Free memory was 119.8MB in the beginning and 108.8MB in the end (delta: 11.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-09 00:45:04,609 INFO L158 Benchmark]: TraceAbstraction took 309.82ms. Allocated memory is still 167.8MB. Free memory was 108.1MB in the beginning and 87.0MB in the end (delta: 21.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-09 00:45:04,610 INFO L158 Benchmark]: Witness Printer took 2.95ms. Allocated memory is still 167.8MB. Free memory was 87.0MB in the beginning and 86.7MB in the end (delta: 308.9kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 00:45:04,613 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 218.1MB. Free memory is still 131.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 201.74ms. Allocated memory is still 167.8MB. Free memory was 133.4MB in the beginning and 122.5MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.65ms. Allocated memory is still 167.8MB. Free memory was 122.5MB in the beginning and 121.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.84ms. Allocated memory is still 167.8MB. Free memory was 121.1MB in the beginning and 119.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 208.53ms. Allocated memory is still 167.8MB. Free memory was 119.8MB in the beginning and 108.8MB in the end (delta: 11.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 309.82ms. Allocated memory is still 167.8MB. Free memory was 108.1MB in the beginning and 87.0MB in the end (delta: 21.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 2.95ms. Allocated memory is still 167.8MB. Free memory was 87.0MB in the beginning and 86.7MB in the end (delta: 308.9kB). 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 44, overapproximation of someBinaryArithmeticFLOAToperation at line 34, overapproximation of someBinaryArithmeticFLOAToperation at line 42, overapproximation of someBinaryArithmeticFLOAToperation at line 29. Possible FailurePath: [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN > -0.8f && IN < 0.8f) [L24] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN > -0.8f && IN < 0.8f) [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: 0.2s, 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 [2025-01-09 00:45:04,639 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_4.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 0c5600740103c77f2bf443c7f5a57c196b00730939a706a857dd583d49faca41 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 00:45:06,615 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 00:45:06,696 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2025-01-09 00:45:06,705 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 00:45:06,705 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 00:45:06,728 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 00:45:06,730 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 00:45:06,730 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 00:45:06,730 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 00:45:06,730 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 00:45:06,731 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 00:45:06,731 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 00:45:06,731 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 00:45:06,731 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 00:45:06,731 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 00:45:06,731 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 00:45:06,731 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 00:45:06,731 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 00:45:06,731 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 00:45:06,731 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 00:45:06,731 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 00:45:06,731 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 00:45:06,731 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 00:45:06,731 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-09 00:45:06,731 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-01-09 00:45:06,731 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-01-09 00:45:06,731 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 00:45:06,732 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 00:45:06,732 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 00:45:06,732 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 00:45:06,732 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 00:45:06,732 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 00:45:06,732 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 00:45:06,732 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 00:45:06,732 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 00:45:06,732 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 00:45:06,732 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 00:45:06,732 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 00:45:06,732 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 00:45:06,732 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 00:45:06,732 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 00:45:06,732 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 00:45:06,734 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 00:45:06,734 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 00:45:06,734 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-01-09 00:45:06,735 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-01-09 00:45:06,735 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 00:45:06,735 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 00:45:06,735 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 00:45:06,735 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 00:45:06,735 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 -> 0c5600740103c77f2bf443c7f5a57c196b00730939a706a857dd583d49faca41 [2025-01-09 00:45:06,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 00:45:07,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 00:45:07,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 00:45:07,004 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 00:45:07,006 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 00:45:07,007 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_3_4.i [2025-01-09 00:45:08,159 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/485df6ffd/4e961ae70e1142e19f8ad126589dd6d3/FLAGffc58fb7b [2025-01-09 00:45:08,365 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 00:45:08,367 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_4.i [2025-01-09 00:45:08,373 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/485df6ffd/4e961ae70e1142e19f8ad126589dd6d3/FLAGffc58fb7b [2025-01-09 00:45:08,387 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/485df6ffd/4e961ae70e1142e19f8ad126589dd6d3 [2025-01-09 00:45:08,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 00:45:08,392 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 00:45:08,393 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 00:45:08,393 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 00:45:08,397 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 00:45:08,398 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 12:45:08" (1/1) ... [2025-01-09 00:45:08,398 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f74b861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:45:08, skipping insertion in model container [2025-01-09 00:45:08,399 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 12:45:08" (1/1) ... [2025-01-09 00:45:08,408 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 00:45:08,505 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_4.i[1764,1777] [2025-01-09 00:45:08,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 00:45:08,521 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 00:45:08,535 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_4.i[1764,1777] [2025-01-09 00:45:08,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 00:45:08,546 INFO L204 MainTranslator]: Completed translation [2025-01-09 00:45:08,546 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:45:08 WrapperNode [2025-01-09 00:45:08,546 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 00:45:08,547 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 00:45:08,547 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 00:45:08,547 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 00:45:08,552 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:45:08" (1/1) ... [2025-01-09 00:45:08,558 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:45:08" (1/1) ... [2025-01-09 00:45:08,568 INFO L138 Inliner]: procedures = 18, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2025-01-09 00:45:08,568 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 00:45:08,569 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 00:45:08,569 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 00:45:08,569 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 00:45:08,575 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:45:08" (1/1) ... [2025-01-09 00:45:08,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:45:08" (1/1) ... [2025-01-09 00:45:08,577 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:45:08" (1/1) ... [2025-01-09 00:45:08,584 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]. [2025-01-09 00:45:08,585 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:45:08" (1/1) ... [2025-01-09 00:45:08,585 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:45:08" (1/1) ... [2025-01-09 00:45:08,592 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:45:08" (1/1) ... [2025-01-09 00:45:08,593 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:45:08" (1/1) ... [2025-01-09 00:45:08,596 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:45:08" (1/1) ... [2025-01-09 00:45:08,600 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:45:08" (1/1) ... [2025-01-09 00:45:08,600 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:45:08" (1/1) ... [2025-01-09 00:45:08,602 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 00:45:08,602 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 00:45:08,604 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 00:45:08,605 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 00:45:08,605 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:45:08" (1/1) ... [2025-01-09 00:45:08,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 00:45:08,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 00:45:08,629 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) [2025-01-09 00:45:08,631 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 [2025-01-09 00:45:08,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 00:45:08,649 INFO L130 BoogieDeclarations]: Found specification of procedure f [2025-01-09 00:45:08,649 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2025-01-09 00:45:08,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-01-09 00:45:08,649 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2025-01-09 00:45:08,649 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2025-01-09 00:45:08,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 00:45:08,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 00:45:08,700 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 00:45:08,701 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 00:45:23,427 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2025-01-09 00:45:23,427 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 00:45:23,436 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 00:45:23,437 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 00:45:23,438 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 12:45:23 BoogieIcfgContainer [2025-01-09 00:45:23,438 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 00:45:23,441 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 00:45:23,442 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 00:45:23,446 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 00:45:23,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 12:45:08" (1/3) ... [2025-01-09 00:45:23,447 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb440a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 12:45:23, skipping insertion in model container [2025-01-09 00:45:23,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:45:08" (2/3) ... [2025-01-09 00:45:23,448 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb440a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 12:45:23, skipping insertion in model container [2025-01-09 00:45:23,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 12:45:23" (3/3) ... [2025-01-09 00:45:23,449 INFO L128 eAbstractionObserver]: Analyzing ICFG newton_3_4.i [2025-01-09 00:45:23,459 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 00:45:23,461 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG newton_3_4.i that has 3 procedures, 26 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-01-09 00:45:23,497 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 00:45:23,506 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;@6922dc99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 00:45:23,506 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 00:45:23,509 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) [2025-01-09 00:45:23,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-01-09 00:45:23,513 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 00:45:23,513 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] [2025-01-09 00:45:23,514 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 00:45:23,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 00:45:23,517 INFO L85 PathProgramCache]: Analyzing trace with hash 694828395, now seen corresponding path program 1 times [2025-01-09 00:45:23,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 00:45:23,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [835933593] [2025-01-09 00:45:23,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 00:45:23,523 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 [2025-01-09 00:45:23,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2025-01-09 00:45:23,526 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) [2025-01-09 00:45:23,527 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 [2025-01-09 00:45:23,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-01-09 00:45:25,925 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-01-09 00:45:25,925 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 00:45:25,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 00:45:26,016 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 00:45:26,020 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 00:45:26,034 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-01-09 00:45:26,035 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 00:45:26,035 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 00:45:26,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [835933593] [2025-01-09 00:45:26,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [835933593] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 00:45:26,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 00:45:26,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 00:45:26,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671228225] [2025-01-09 00:45:26,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 00:45:26,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 00:45:26,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 00:45:26,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 00:45:26,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 00:45:26,053 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) [2025-01-09 00:45:26,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 00:45:26,064 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2025-01-09 00:45:26,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 00:45:26,069 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 [2025-01-09 00:45:26,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 00:45:26,074 INFO L225 Difference]: With dead ends: 49 [2025-01-09 00:45:26,075 INFO L226 Difference]: Without dead ends: 22 [2025-01-09 00:45:26,076 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 [2025-01-09 00:45:26,078 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 [2025-01-09 00:45:26,078 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] [2025-01-09 00:45:26,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-01-09 00:45:26,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2025-01-09 00:45:26,104 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) [2025-01-09 00:45:26,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2025-01-09 00:45:26,110 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 33 [2025-01-09 00:45:26,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 00:45:26,110 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2025-01-09 00:45:26,111 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) [2025-01-09 00:45:26,111 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2025-01-09 00:45:26,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-01-09 00:45:26,112 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 00:45:26,112 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] [2025-01-09 00:45:26,178 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 [2025-01-09 00:45:26,317 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 [2025-01-09 00:45:26,317 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 00:45:26,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 00:45:26,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1396428269, now seen corresponding path program 1 times [2025-01-09 00:45:26,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 00:45:26,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1621111510] [2025-01-09 00:45:26,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 00:45:26,319 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 [2025-01-09 00:45:26,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2025-01-09 00:45:26,322 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) [2025-01-09 00:45:26,323 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 [2025-01-09 00:45:26,354 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes.