./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_2_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_2_4.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 44e41a637fa9468dc0732b4bb0eab375ec0174d4f214854050209bd1011a360f --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-11 17:46:12,143 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-11 17:46:12,200 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-11 17:46:12,203 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-11 17:46:12,204 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-11 17:46:12,223 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-11 17:46:12,224 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-11 17:46:12,224 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-11 17:46:12,225 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-11 17:46:12,225 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-11 17:46:12,225 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-11 17:46:12,225 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-11 17:46:12,226 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-11 17:46:12,226 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-11 17:46:12,227 INFO L153 SettingsManager]: * Use SBE=true [2024-11-11 17:46:12,227 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-11 17:46:12,227 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-11 17:46:12,228 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-11 17:46:12,228 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-11 17:46:12,228 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-11 17:46:12,228 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-11 17:46:12,229 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-11 17:46:12,229 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-11 17:46:12,229 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-11 17:46:12,229 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-11 17:46:12,230 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-11 17:46:12,230 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-11 17:46:12,230 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-11 17:46:12,230 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-11 17:46:12,231 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-11 17:46:12,231 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-11 17:46:12,231 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-11 17:46:12,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 17:46:12,232 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-11 17:46:12,232 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-11 17:46:12,232 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-11 17:46:12,232 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-11 17:46:12,233 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-11 17:46:12,233 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-11 17:46:12,239 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-11 17:46:12,239 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-11 17:46:12,240 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-11 17:46:12,240 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44e41a637fa9468dc0732b4bb0eab375ec0174d4f214854050209bd1011a360f [2024-11-11 17:46:12,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-11 17:46:12,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-11 17:46:12,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-11 17:46:12,465 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-11 17:46:12,466 INFO L274 PluginConnector]: CDTParser initialized [2024-11-11 17:46:12,467 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_2_4.i [2024-11-11 17:46:13,898 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-11 17:46:14,059 INFO L384 CDTParser]: Found 1 translation units. [2024-11-11 17:46:14,060 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_4.i [2024-11-11 17:46:14,068 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d6339bbc/6bdf8dc3b6b744a799914cbe8d04db9b/FLAGcb0777f40 [2024-11-11 17:46:14,081 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d6339bbc/6bdf8dc3b6b744a799914cbe8d04db9b [2024-11-11 17:46:14,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-11 17:46:14,084 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-11 17:46:14,085 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-11 17:46:14,085 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-11 17:46:14,090 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-11 17:46:14,091 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 05:46:14" (1/1) ... [2024-11-11 17:46:14,091 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b4d6786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:46:14, skipping insertion in model container [2024-11-11 17:46:14,091 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 05:46:14" (1/1) ... [2024-11-11 17:46:14,109 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-11 17:46:14,259 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_4.i[1743,1756] [2024-11-11 17:46:14,262 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 17:46:14,271 INFO L200 MainTranslator]: Completed pre-run [2024-11-11 17:46:14,286 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_4.i[1743,1756] [2024-11-11 17:46:14,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 17:46:14,302 INFO L204 MainTranslator]: Completed translation [2024-11-11 17:46:14,303 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:46:14 WrapperNode [2024-11-11 17:46:14,303 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-11 17:46:14,304 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-11 17:46:14,304 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-11 17:46:14,304 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-11 17:46:14,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:46:14" (1/1) ... [2024-11-11 17:46:14,315 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:46:14" (1/1) ... [2024-11-11 17:46:14,329 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 29 [2024-11-11 17:46:14,329 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-11 17:46:14,330 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-11 17:46:14,330 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-11 17:46:14,330 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-11 17:46:14,337 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:46:14" (1/1) ... [2024-11-11 17:46:14,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:46:14" (1/1) ... [2024-11-11 17:46:14,339 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:46:14" (1/1) ... [2024-11-11 17:46:14,346 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-11 17:46:14,346 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:46:14" (1/1) ... [2024-11-11 17:46:14,347 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:46:14" (1/1) ... [2024-11-11 17:46:14,349 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:46:14" (1/1) ... [2024-11-11 17:46:14,350 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:46:14" (1/1) ... [2024-11-11 17:46:14,351 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:46:14" (1/1) ... [2024-11-11 17:46:14,352 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:46:14" (1/1) ... [2024-11-11 17:46:14,357 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-11 17:46:14,357 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-11 17:46:14,357 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-11 17:46:14,358 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-11 17:46:14,358 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:46:14" (1/1) ... [2024-11-11 17:46:14,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 17:46:14,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 17:46:14,388 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-11 17:46:14,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-11 17:46:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-11 17:46:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-11 17:46:14,428 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-11 17:46:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2024-11-11 17:46:14,428 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2024-11-11 17:46:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-11 17:46:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-11 17:46:14,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-11 17:46:14,477 INFO L238 CfgBuilder]: Building ICFG [2024-11-11 17:46:14,479 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-11 17:46:14,559 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-11 17:46:14,559 INFO L287 CfgBuilder]: Performing block encoding [2024-11-11 17:46:14,576 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-11 17:46:14,576 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-11 17:46:14,576 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 05:46:14 BoogieIcfgContainer [2024-11-11 17:46:14,577 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-11 17:46:14,583 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-11 17:46:14,584 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-11 17:46:14,590 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-11 17:46:14,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 05:46:14" (1/3) ... [2024-11-11 17:46:14,591 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b43837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 05:46:14, skipping insertion in model container [2024-11-11 17:46:14,591 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:46:14" (2/3) ... [2024-11-11 17:46:14,591 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b43837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 05:46:14, skipping insertion in model container [2024-11-11 17:46:14,591 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 05:46:14" (3/3) ... [2024-11-11 17:46:14,592 INFO L112 eAbstractionObserver]: Analyzing ICFG newton_2_4.i [2024-11-11 17:46:14,610 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-11 17:46:14,611 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-11 17:46:14,679 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-11 17:46:14,691 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;@b64979b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-11 17:46:14,692 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-11 17:46:14,700 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) [2024-11-11 17:46:14,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-11 17:46:14,706 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:46:14,706 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] [2024-11-11 17:46:14,707 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:46:14,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:46:14,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1905727787, now seen corresponding path program 1 times [2024-11-11 17:46:14,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:46:14,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857129001] [2024-11-11 17:46:14,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:46:14,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:46:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:46:14,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-11 17:46:14,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:46:14,825 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-11 17:46:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:46:14,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-11 17:46:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:46:14,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-11 17:46:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:46:14,837 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-11 17:46:14,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:46:14,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857129001] [2024-11-11 17:46:14,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857129001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:46:14,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:46:14,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 17:46:14,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360055519] [2024-11-11 17:46:14,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:46:14,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-11 17:46:14,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:46:14,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-11 17:46:14,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-11 17:46:14,864 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) [2024-11-11 17:46:14,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:46:14,878 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2024-11-11 17:46:14,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-11 17:46:14,879 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 [2024-11-11 17:46:14,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:46:14,884 INFO L225 Difference]: With dead ends: 43 [2024-11-11 17:46:14,884 INFO L226 Difference]: Without dead ends: 19 [2024-11-11 17:46:14,886 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-11 17:46:14,889 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 [2024-11-11 17:46:14,889 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] [2024-11-11 17:46:14,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-11 17:46:14,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-11 17:46:14,917 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) [2024-11-11 17:46:14,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2024-11-11 17:46:14,919 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 24 [2024-11-11 17:46:14,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:46:14,920 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2024-11-11 17:46:14,920 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) [2024-11-11 17:46:14,920 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2024-11-11 17:46:14,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-11 17:46:14,921 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:46:14,922 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] [2024-11-11 17:46:14,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-11 17:46:14,922 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:46:14,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:46:14,923 INFO L85 PathProgramCache]: Analyzing trace with hash 2124582505, now seen corresponding path program 1 times [2024-11-11 17:46:14,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:46:14,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799096540] [2024-11-11 17:46:14,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:46:14,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:46:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-11 17:46:14,937 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-11 17:46:14,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-11 17:46:14,966 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-11 17:46:14,967 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-11 17:46:14,968 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-11 17:46:14,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-11 17:46:14,972 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-11 17:46:14,987 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-11 17:46:14,990 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 05:46:14 BoogieIcfgContainer [2024-11-11 17:46:14,990 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-11 17:46:14,991 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-11 17:46:14,991 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-11 17:46:14,992 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-11 17:46:14,992 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 05:46:14" (3/4) ... [2024-11-11 17:46:14,994 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-11 17:46:14,995 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-11 17:46:14,995 INFO L158 Benchmark]: Toolchain (without parser) took 910.80ms. Allocated memory is still 184.5MB. Free memory was 127.2MB in the beginning and 72.3MB in the end (delta: 54.9MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2024-11-11 17:46:14,996 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 184.5MB. Free memory is still 149.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-11 17:46:14,996 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.65ms. Allocated memory is still 184.5MB. Free memory was 127.2MB in the beginning and 114.2MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-11 17:46:14,996 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.00ms. Allocated memory is still 184.5MB. Free memory was 114.2MB in the beginning and 113.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-11 17:46:14,997 INFO L158 Benchmark]: Boogie Preprocessor took 26.71ms. Allocated memory is still 184.5MB. Free memory was 112.5MB in the beginning and 111.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-11 17:46:14,997 INFO L158 Benchmark]: RCFGBuilder took 219.23ms. Allocated memory is still 184.5MB. Free memory was 111.1MB in the beginning and 99.5MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-11 17:46:14,997 INFO L158 Benchmark]: TraceAbstraction took 407.18ms. Allocated memory is still 184.5MB. Free memory was 98.7MB in the beginning and 72.7MB in the end (delta: 26.0MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-11-11 17:46:14,998 INFO L158 Benchmark]: Witness Printer took 3.64ms. Allocated memory is still 184.5MB. Free memory was 72.7MB in the beginning and 72.3MB in the end (delta: 430.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-11 17:46:14,999 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 184.5MB. Free memory is still 149.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 217.65ms. Allocated memory is still 184.5MB. Free memory was 127.2MB in the beginning and 114.2MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.00ms. Allocated memory is still 184.5MB. Free memory was 114.2MB in the beginning and 113.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.71ms. Allocated memory is still 184.5MB. Free memory was 112.5MB in the beginning and 111.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 219.23ms. Allocated memory is still 184.5MB. Free memory was 111.1MB in the beginning and 99.5MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 407.18ms. Allocated memory is still 184.5MB. Free memory was 98.7MB in the beginning and 72.7MB in the end (delta: 26.0MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 3.64ms. Allocated memory is still 184.5MB. Free memory was 72.7MB in the beginning and 72.3MB in the end (delta: 430.2kB). 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. 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)=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: 0.3s, 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, 10 GetRequests, 10 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-11 17:46:15,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_2_4.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 44e41a637fa9468dc0732b4bb0eab375ec0174d4f214854050209bd1011a360f --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-11 17:46:17,008 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-11 17:46:17,078 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-11 17:46:17,084 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-11 17:46:17,084 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-11 17:46:17,117 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-11 17:46:17,118 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-11 17:46:17,118 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-11 17:46:17,119 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-11 17:46:17,119 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-11 17:46:17,119 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-11 17:46:17,119 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-11 17:46:17,120 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-11 17:46:17,120 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-11 17:46:17,121 INFO L153 SettingsManager]: * Use SBE=true [2024-11-11 17:46:17,121 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-11 17:46:17,121 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-11 17:46:17,122 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-11 17:46:17,122 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-11 17:46:17,122 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-11 17:46:17,122 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-11 17:46:17,123 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-11 17:46:17,123 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-11 17:46:17,123 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-11 17:46:17,124 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-11 17:46:17,124 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-11 17:46:17,124 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-11 17:46:17,124 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-11 17:46:17,125 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-11 17:46:17,125 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-11 17:46:17,125 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-11 17:46:17,125 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-11 17:46:17,126 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-11 17:46:17,126 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-11 17:46:17,126 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 17:46:17,127 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-11 17:46:17,127 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-11 17:46:17,127 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-11 17:46:17,127 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-11 17:46:17,128 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-11 17:46:17,128 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-11 17:46:17,128 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-11 17:46:17,129 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-11 17:46:17,129 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-11 17:46:17,129 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44e41a637fa9468dc0732b4bb0eab375ec0174d4f214854050209bd1011a360f [2024-11-11 17:46:17,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-11 17:46:17,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-11 17:46:17,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-11 17:46:17,474 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-11 17:46:17,475 INFO L274 PluginConnector]: CDTParser initialized [2024-11-11 17:46:17,476 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_2_4.i [2024-11-11 17:46:18,762 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-11 17:46:18,928 INFO L384 CDTParser]: Found 1 translation units. [2024-11-11 17:46:18,929 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_4.i [2024-11-11 17:46:18,935 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdb414c1e/8c47c3d21bf246b1ac1c4b89301e739c/FLAGf16a0eb05 [2024-11-11 17:46:18,945 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdb414c1e/8c47c3d21bf246b1ac1c4b89301e739c [2024-11-11 17:46:18,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-11 17:46:18,948 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-11 17:46:18,953 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-11 17:46:18,953 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-11 17:46:18,961 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-11 17:46:18,962 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 05:46:18" (1/1) ... [2024-11-11 17:46:18,962 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3786944f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:46:18, skipping insertion in model container [2024-11-11 17:46:18,963 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 05:46:18" (1/1) ... [2024-11-11 17:46:18,980 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-11 17:46:19,133 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_4.i[1743,1756] [2024-11-11 17:46:19,137 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 17:46:19,148 INFO L200 MainTranslator]: Completed pre-run [2024-11-11 17:46:19,168 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_4.i[1743,1756] [2024-11-11 17:46:19,169 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 17:46:19,188 INFO L204 MainTranslator]: Completed translation [2024-11-11 17:46:19,188 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:46:19 WrapperNode [2024-11-11 17:46:19,188 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-11 17:46:19,189 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-11 17:46:19,189 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-11 17:46:19,189 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-11 17:46:19,194 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:46:19" (1/1) ... [2024-11-11 17:46:19,205 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:46:19" (1/1) ... [2024-11-11 17:46:19,220 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 30 [2024-11-11 17:46:19,221 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-11 17:46:19,221 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-11 17:46:19,221 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-11 17:46:19,221 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-11 17:46:19,230 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:46:19" (1/1) ... [2024-11-11 17:46:19,230 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:46:19" (1/1) ... [2024-11-11 17:46:19,234 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:46:19" (1/1) ... [2024-11-11 17:46:19,245 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-11 17:46:19,246 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:46:19" (1/1) ... [2024-11-11 17:46:19,246 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:46:19" (1/1) ... [2024-11-11 17:46:19,251 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:46:19" (1/1) ... [2024-11-11 17:46:19,257 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:46:19" (1/1) ... [2024-11-11 17:46:19,258 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:46:19" (1/1) ... [2024-11-11 17:46:19,258 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:46:19" (1/1) ... [2024-11-11 17:46:19,262 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-11 17:46:19,263 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-11 17:46:19,264 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-11 17:46:19,264 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-11 17:46:19,264 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:46:19" (1/1) ... [2024-11-11 17:46:19,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 17:46:19,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 17:46:19,291 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-11 17:46:19,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-11 17:46:19,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-11 17:46:19,337 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-11 17:46:19,337 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-11 17:46:19,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-11 17:46:19,337 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2024-11-11 17:46:19,337 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2024-11-11 17:46:19,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-11 17:46:19,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-11 17:46:19,400 INFO L238 CfgBuilder]: Building ICFG [2024-11-11 17:46:19,404 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-11 17:46:31,269 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-11 17:46:31,269 INFO L287 CfgBuilder]: Performing block encoding [2024-11-11 17:46:31,277 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-11 17:46:31,277 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-11 17:46:31,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 05:46:31 BoogieIcfgContainer [2024-11-11 17:46:31,278 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-11 17:46:31,279 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-11 17:46:31,279 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-11 17:46:31,281 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-11 17:46:31,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 05:46:18" (1/3) ... [2024-11-11 17:46:31,282 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33fc0559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 05:46:31, skipping insertion in model container [2024-11-11 17:46:31,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:46:19" (2/3) ... [2024-11-11 17:46:31,282 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33fc0559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 05:46:31, skipping insertion in model container [2024-11-11 17:46:31,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 05:46:31" (3/3) ... [2024-11-11 17:46:31,284 INFO L112 eAbstractionObserver]: Analyzing ICFG newton_2_4.i [2024-11-11 17:46:31,295 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-11 17:46:31,296 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-11 17:46:31,347 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-11 17:46:31,355 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;@3cdf0181, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-11 17:46:31,355 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-11 17:46:31,358 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) [2024-11-11 17:46:31,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-11 17:46:31,363 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:46:31,364 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] [2024-11-11 17:46:31,364 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:46:31,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:46:31,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1905727787, now seen corresponding path program 1 times [2024-11-11 17:46:31,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-11 17:46:31,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129896748] [2024-11-11 17:46:31,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:46:31,381 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-11 17:46:31,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-11 17:46:31,384 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-11 17:46:31,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-11 17:46:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:46:33,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-11 17:46:33,139 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 17:46:33,155 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-11 17:46:33,155 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 17:46:33,155 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-11 17:46:33,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129896748] [2024-11-11 17:46:33,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [129896748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:46:33,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:46:33,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 17:46:33,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836504086] [2024-11-11 17:46:33,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:46:33,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-11 17:46:33,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-11 17:46:33,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-11 17:46:33,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-11 17:46:33,177 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) [2024-11-11 17:46:33,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:46:33,193 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2024-11-11 17:46:33,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-11 17:46:33,195 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 [2024-11-11 17:46:33,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:46:33,200 INFO L225 Difference]: With dead ends: 43 [2024-11-11 17:46:33,200 INFO L226 Difference]: Without dead ends: 19 [2024-11-11 17:46:33,202 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 [2024-11-11 17:46:33,204 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 [2024-11-11 17:46:33,205 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] [2024-11-11 17:46:33,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-11 17:46:33,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-11 17:46:33,230 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) [2024-11-11 17:46:33,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2024-11-11 17:46:33,232 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 24 [2024-11-11 17:46:33,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:46:33,232 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2024-11-11 17:46:33,232 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) [2024-11-11 17:46:33,233 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2024-11-11 17:46:33,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-11 17:46:33,233 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:46:33,234 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] [2024-11-11 17:46:33,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-11 17:46:33,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-11 17:46:33,435 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:46:33,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:46:33,435 INFO L85 PathProgramCache]: Analyzing trace with hash 2124582505, now seen corresponding path program 1 times [2024-11-11 17:46:33,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-11 17:46:33,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936385033] [2024-11-11 17:46:33,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:46:33,436 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-11 17:46:33,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-11 17:46:33,438 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-11 17:46:33,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process