./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c -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 3bb1d9e312234d5c4f7ead2dcb51cc43e4ff3aebeffef1b0758f6a0d5be2ea9b --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 00:35:27,948 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 00:35:28,028 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 00:35:28,033 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 00:35:28,034 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 00:35:28,063 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 00:35:28,064 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 00:35:28,064 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 00:35:28,065 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 00:35:28,066 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 00:35:28,067 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 00:35:28,067 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 00:35:28,068 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 00:35:28,068 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 00:35:28,071 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 00:35:28,072 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 00:35:28,072 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 00:35:28,072 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 00:35:28,073 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 00:35:28,073 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 00:35:28,073 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 00:35:28,074 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 00:35:28,074 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 00:35:28,074 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 00:35:28,074 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 00:35:28,075 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 00:35:28,075 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 00:35:28,075 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 00:35:28,075 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 00:35:28,075 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 00:35:28,076 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 00:35:28,076 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 00:35:28,076 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 00:35:28,076 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 00:35:28,077 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 00:35:28,077 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 00:35:28,079 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 00:35:28,079 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 00:35:28,079 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 00:35:28,080 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 00:35:28,080 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 00:35:28,080 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 00:35:28,080 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3bb1d9e312234d5c4f7ead2dcb51cc43e4ff3aebeffef1b0758f6a0d5be2ea9b [2024-10-14 00:35:28,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 00:35:28,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 00:35:28,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 00:35:28,330 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 00:35:28,330 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 00:35:28,331 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c [2024-10-14 00:35:29,783 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 00:35:29,972 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 00:35:29,973 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c [2024-10-14 00:35:29,987 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5b4ee3fd/c38a80566d1e4024aba562149c5b2cde/FLAG4dafe7999 [2024-10-14 00:35:30,004 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5b4ee3fd/c38a80566d1e4024aba562149c5b2cde [2024-10-14 00:35:30,008 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 00:35:30,010 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 00:35:30,012 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 00:35:30,013 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 00:35:30,019 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 00:35:30,019 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:35:30" (1/1) ... [2024-10-14 00:35:30,022 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@333ef7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:35:30, skipping insertion in model container [2024-10-14 00:35:30,022 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:35:30" (1/1) ... [2024-10-14 00:35:30,043 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 00:35:30,208 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c[831,844] [2024-10-14 00:35:30,239 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 00:35:30,255 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 00:35:30,271 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c[831,844] [2024-10-14 00:35:30,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 00:35:30,298 INFO L204 MainTranslator]: Completed translation [2024-10-14 00:35:30,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:35:30 WrapperNode [2024-10-14 00:35:30,299 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 00:35:30,300 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 00:35:30,300 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 00:35:30,300 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 00:35:30,307 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:35:30" (1/1) ... [2024-10-14 00:35:30,314 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:35:30" (1/1) ... [2024-10-14 00:35:30,334 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 63 [2024-10-14 00:35:30,335 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 00:35:30,335 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 00:35:30,336 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 00:35:30,336 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 00:35:30,345 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:35:30" (1/1) ... [2024-10-14 00:35:30,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:35:30" (1/1) ... [2024-10-14 00:35:30,348 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:35:30" (1/1) ... [2024-10-14 00:35:30,363 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-14 00:35:30,364 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:35:30" (1/1) ... [2024-10-14 00:35:30,364 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:35:30" (1/1) ... [2024-10-14 00:35:30,368 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:35:30" (1/1) ... [2024-10-14 00:35:30,374 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:35:30" (1/1) ... [2024-10-14 00:35:30,377 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:35:30" (1/1) ... [2024-10-14 00:35:30,378 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:35:30" (1/1) ... [2024-10-14 00:35:30,384 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 00:35:30,385 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 00:35:30,385 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 00:35:30,385 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 00:35:30,386 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:35:30" (1/1) ... [2024-10-14 00:35:30,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 00:35:30,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 00:35:30,420 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 00:35:30,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 00:35:30,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 00:35:30,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 00:35:30,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 00:35:30,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 00:35:30,533 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 00:35:30,535 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 00:35:30,672 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-10-14 00:35:30,672 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 00:35:30,715 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 00:35:30,717 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 00:35:30,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:35:30 BoogieIcfgContainer [2024-10-14 00:35:30,718 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 00:35:30,720 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 00:35:30,721 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 00:35:30,724 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 00:35:30,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:35:30" (1/3) ... [2024-10-14 00:35:30,725 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22845e67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:35:30, skipping insertion in model container [2024-10-14 00:35:30,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:35:30" (2/3) ... [2024-10-14 00:35:30,726 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22845e67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:35:30, skipping insertion in model container [2024-10-14 00:35:30,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:35:30" (3/3) ... [2024-10-14 00:35:30,729 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_interval.c [2024-10-14 00:35:30,748 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 00:35:30,749 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 00:35:30,818 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 00:35:30,826 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;@28a7885, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 00:35:30,827 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 00:35:30,831 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:35:30,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-14 00:35:30,837 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:35:30,837 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:35:30,838 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:35:30,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:35:30,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1174209552, now seen corresponding path program 1 times [2024-10-14 00:35:30,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:35:30,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671240250] [2024-10-14 00:35:30,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:35:30,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:35:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:35:31,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 00:35:31,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:35:31,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671240250] [2024-10-14 00:35:31,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671240250] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:35:31,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 00:35:31,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 00:35:31,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645892897] [2024-10-14 00:35:31,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:35:31,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 00:35:31,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:35:31,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 00:35:31,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 00:35:31,102 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:35:31,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:35:31,127 INFO L93 Difference]: Finished difference Result 22 states and 29 transitions. [2024-10-14 00:35:31,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 00:35:31,129 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-14 00:35:31,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:35:31,140 INFO L225 Difference]: With dead ends: 22 [2024-10-14 00:35:31,140 INFO L226 Difference]: Without dead ends: 10 [2024-10-14 00:35:31,143 INFO L431 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 [2024-10-14 00:35:31,146 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 00:35:31,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 00:35:31,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-10-14 00:35:31,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2024-10-14 00:35:31,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:35:31,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2024-10-14 00:35:31,176 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 9 [2024-10-14 00:35:31,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:35:31,176 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2024-10-14 00:35:31,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:35:31,177 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2024-10-14 00:35:31,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-14 00:35:31,178 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:35:31,178 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:35:31,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 00:35:31,179 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:35:31,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:35:31,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1983556178, now seen corresponding path program 1 times [2024-10-14 00:35:31,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:35:31,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476435136] [2024-10-14 00:35:31,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:35:31,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:35:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 00:35:31,222 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 00:35:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 00:35:31,269 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 00:35:31,269 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 00:35:31,273 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-14 00:35:31,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 00:35:31,278 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-14 00:35:31,292 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-14 00:35:31,296 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 12:35:31 BoogieIcfgContainer [2024-10-14 00:35:31,296 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-14 00:35:31,297 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-14 00:35:31,297 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-14 00:35:31,297 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-14 00:35:31,297 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:35:30" (3/4) ... [2024-10-14 00:35:31,299 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-14 00:35:31,300 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-14 00:35:31,301 INFO L158 Benchmark]: Toolchain (without parser) took 1291.27ms. Allocated memory is still 192.9MB. Free memory was 119.5MB in the beginning and 142.1MB in the end (delta: -22.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 00:35:31,301 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 192.9MB. Free memory is still 149.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 00:35:31,302 INFO L158 Benchmark]: CACSL2BoogieTranslator took 287.07ms. Allocated memory is still 192.9MB. Free memory was 119.3MB in the beginning and 107.5MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-14 00:35:31,303 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.71ms. Allocated memory is still 192.9MB. Free memory was 107.5MB in the beginning and 105.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 00:35:31,303 INFO L158 Benchmark]: Boogie Preprocessor took 48.51ms. Allocated memory is still 192.9MB. Free memory was 105.9MB in the beginning and 104.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 00:35:31,304 INFO L158 Benchmark]: RCFGBuilder took 333.36ms. Allocated memory is still 192.9MB. Free memory was 104.1MB in the beginning and 92.5MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-14 00:35:31,304 INFO L158 Benchmark]: TraceAbstraction took 576.13ms. Allocated memory is still 192.9MB. Free memory was 91.8MB in the beginning and 143.1MB in the end (delta: -51.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 00:35:31,305 INFO L158 Benchmark]: Witness Printer took 3.73ms. Allocated memory is still 192.9MB. Free memory is still 142.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 00:35:31,310 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 192.9MB. Free memory is still 149.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 287.07ms. Allocated memory is still 192.9MB. Free memory was 119.3MB in the beginning and 107.5MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.71ms. Allocated memory is still 192.9MB. Free memory was 107.5MB in the beginning and 105.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.51ms. Allocated memory is still 192.9MB. Free memory was 105.9MB in the beginning and 104.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 333.36ms. Allocated memory is still 192.9MB. Free memory was 104.1MB in the beginning and 92.5MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 576.13ms. Allocated memory is still 192.9MB. Free memory was 91.8MB in the beginning and 143.1MB in the end (delta: -51.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.73ms. Allocated memory is still 192.9MB. Free memory is still 142.1MB. 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: 20]: 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 someBinaryDOUBLEComparisonOperation at line 56, overapproximation of someUnaryDOUBLEoperation at line 32, overapproximation of someBinaryArithmeticDOUBLEoperation at line 44. Possible FailurePath: [L22] double _EPS = 1e-6; [L49] double d, r; [L51] d = __VERIFIER_nondet_double() [L52] CALL assume_abort_if_not(d >= 0.1 && d <= 20.0) [L18] COND FALSE !(!cond) VAL [_EPS=1/1000000] [L52] RET assume_abort_if_not(d >= 0.1 && d <= 20.0) [L54] CALL, EXPR SqrtR(d) [L26] double xn, xnp1, residu, lsup, linf; [L27] int i, cond; VAL [_EPS=1/1000000] [L28] COND TRUE Input <= 1.0 [L28] xn = 1.0 VAL [_EPS=1/1000000, xn=1] [L29] xnp1 = xn [L30] residu = 2.0*_EPS*(xn+xnp1) [L31] lsup = _EPS * (xn+xnp1) [L32] linf = -lsup [L33] cond = ((residu > lsup) || (residu < linf)) [L34] i = 0 VAL [_EPS=1/1000000, cond=0, i=0] [L35] COND FALSE !(\read(cond)) VAL [_EPS=1/1000000, i=0] [L44] return 1.0 / xnp1; [L54] RET, EXPR SqrtR(d) [L54] r = SqrtR(d) [L56] CALL __VERIFIER_assert(r >= 0.3 && r <= 5.) [L20] COND TRUE !(cond) VAL [_EPS=1/1000000] [L20] reach_error() VAL [_EPS=1/1000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 10 mSDtfsCounter, 3 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=12occurred 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, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-10-14 00:35:31,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c -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 3bb1d9e312234d5c4f7ead2dcb51cc43e4ff3aebeffef1b0758f6a0d5be2ea9b --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 00:35:33,486 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 00:35:33,571 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-10-14 00:35:33,578 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 00:35:33,578 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 00:35:33,612 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 00:35:33,615 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 00:35:33,616 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 00:35:33,617 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 00:35:33,618 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 00:35:33,619 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 00:35:33,619 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 00:35:33,620 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 00:35:33,623 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 00:35:33,623 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 00:35:33,624 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 00:35:33,624 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 00:35:33,624 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 00:35:33,624 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 00:35:33,625 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 00:35:33,625 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 00:35:33,626 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 00:35:33,626 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 00:35:33,626 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 00:35:33,626 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-14 00:35:33,627 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 00:35:33,627 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-14 00:35:33,627 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 00:35:33,627 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 00:35:33,628 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 00:35:33,628 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 00:35:33,628 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 00:35:33,628 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 00:35:33,629 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 00:35:33,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 00:35:33,631 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 00:35:33,632 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 00:35:33,632 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 00:35:33,632 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-14 00:35:33,633 INFO L153 SettingsManager]: * Command for external solver=cvc5 --incremental --print-success --lang smt [2024-10-14 00:35:33,633 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 00:35:33,633 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 00:35:33,633 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 00:35:33,634 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 00:35:33,634 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-14 00:35:33,634 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3bb1d9e312234d5c4f7ead2dcb51cc43e4ff3aebeffef1b0758f6a0d5be2ea9b [2024-10-14 00:35:33,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 00:35:34,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 00:35:34,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 00:35:34,021 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 00:35:34,022 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 00:35:34,024 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c [2024-10-14 00:35:35,595 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 00:35:35,774 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 00:35:35,775 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c [2024-10-14 00:35:35,785 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84c83e520/4f37be70866a4c76926ae8caa18e5fa6/FLAGfebe1c582 [2024-10-14 00:35:36,154 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84c83e520/4f37be70866a4c76926ae8caa18e5fa6 [2024-10-14 00:35:36,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 00:35:36,158 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 00:35:36,159 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 00:35:36,159 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 00:35:36,163 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 00:35:36,163 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:35:36" (1/1) ... [2024-10-14 00:35:36,164 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a04861f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:35:36, skipping insertion in model container [2024-10-14 00:35:36,164 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:35:36" (1/1) ... [2024-10-14 00:35:36,188 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 00:35:36,340 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c[831,844] [2024-10-14 00:35:36,370 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 00:35:36,386 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 00:35:36,398 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c[831,844] [2024-10-14 00:35:36,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 00:35:36,430 INFO L204 MainTranslator]: Completed translation [2024-10-14 00:35:36,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:35:36 WrapperNode [2024-10-14 00:35:36,431 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 00:35:36,432 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 00:35:36,432 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 00:35:36,432 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 00:35:36,439 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:35:36" (1/1) ... [2024-10-14 00:35:36,449 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:35:36" (1/1) ... [2024-10-14 00:35:36,470 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 64 [2024-10-14 00:35:36,471 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 00:35:36,472 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 00:35:36,472 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 00:35:36,472 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 00:35:36,482 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:35:36" (1/1) ... [2024-10-14 00:35:36,483 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:35:36" (1/1) ... [2024-10-14 00:35:36,486 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:35:36" (1/1) ... [2024-10-14 00:35:36,506 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-14 00:35:36,509 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:35:36" (1/1) ... [2024-10-14 00:35:36,510 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:35:36" (1/1) ... [2024-10-14 00:35:36,518 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:35:36" (1/1) ... [2024-10-14 00:35:36,525 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:35:36" (1/1) ... [2024-10-14 00:35:36,532 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:35:36" (1/1) ... [2024-10-14 00:35:36,534 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:35:36" (1/1) ... [2024-10-14 00:35:36,536 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 00:35:36,537 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 00:35:36,537 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 00:35:36,537 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 00:35:36,542 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:35:36" (1/1) ... [2024-10-14 00:35:36,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 00:35:36,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 00:35:36,573 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 00:35:36,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 00:35:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 00:35:36,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-14 00:35:36,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 00:35:36,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 00:35:36,700 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 00:35:36,702 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 00:35:48,069 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-10-14 00:35:48,073 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 00:35:48,116 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 00:35:48,120 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 00:35:48,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:35:48 BoogieIcfgContainer [2024-10-14 00:35:48,120 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 00:35:48,122 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 00:35:48,123 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 00:35:48,126 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 00:35:48,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:35:36" (1/3) ... [2024-10-14 00:35:48,128 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@daa3bfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:35:48, skipping insertion in model container [2024-10-14 00:35:48,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:35:36" (2/3) ... [2024-10-14 00:35:48,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@daa3bfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:35:48, skipping insertion in model container [2024-10-14 00:35:48,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:35:48" (3/3) ... [2024-10-14 00:35:48,131 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_interval.c [2024-10-14 00:35:48,149 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 00:35:48,150 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 00:35:48,220 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 00:35:48,227 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;@2a436141, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 00:35:48,227 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 00:35:48,232 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:35:48,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-14 00:35:48,238 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:35:48,239 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:35:48,240 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:35:48,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:35:48,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1174209552, now seen corresponding path program 1 times [2024-10-14 00:35:48,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 00:35:48,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399879960] [2024-10-14 00:35:48,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:35:48,259 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 00:35:48,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 00:35:48,262 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 00:35:48,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-14 00:35:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:35:49,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-10-14 00:35:49,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 00:35:49,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 00:35:49,339 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 00:35:49,340 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 00:35:49,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [399879960] [2024-10-14 00:35:49,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [399879960] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:35:49,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 00:35:49,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 00:35:49,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431717147] [2024-10-14 00:35:49,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:35:49,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 00:35:49,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 00:35:49,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 00:35:49,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 00:35:49,375 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:35:53,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-14 00:35:53,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:35:53,704 INFO L93 Difference]: Finished difference Result 22 states and 29 transitions. [2024-10-14 00:35:53,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 00:35:53,706 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-14 00:35:53,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:35:53,711 INFO L225 Difference]: With dead ends: 22 [2024-10-14 00:35:53,712 INFO L226 Difference]: Without dead ends: 10 [2024-10-14 00:35:53,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 00:35:53,716 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-10-14 00:35:53,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-10-14 00:35:53,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-10-14 00:35:53,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2024-10-14 00:35:53,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:35:53,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2024-10-14 00:35:53,747 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 9 [2024-10-14 00:35:53,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:35:53,748 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2024-10-14 00:35:53,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:35:53,748 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2024-10-14 00:35:53,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-14 00:35:53,749 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:35:53,749 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:35:53,778 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-14 00:35:53,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 00:35:53,950 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:35:53,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:35:53,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1983556178, now seen corresponding path program 1 times [2024-10-14 00:35:53,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 00:35:53,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [886776104] [2024-10-14 00:35:53,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:35:53,953 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 00:35:53,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 00:35:53,958 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 00:35:53,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-14 00:35:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:35:55,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 00:35:55,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 00:35:56,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 00:35:56,304 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 00:35:56,304 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 00:35:56,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [886776104] [2024-10-14 00:35:56,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [886776104] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:35:56,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 00:35:56,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 00:35:56,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278951909] [2024-10-14 00:35:56,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:35:56,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 00:35:56,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 00:35:56,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 00:35:56,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 00:35:56,308 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:35:58,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-14 00:36:02,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.23s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-14 00:36:07,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-14 00:36:11,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-14 00:36:15,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-14 00:36:20,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-14 00:36:24,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-14 00:36:28,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-14 00:36:33,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.87s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-14 00:36:37,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-14 00:36:41,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-14 00:36:45,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.31s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-14 00:36:45,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:36:45,414 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2024-10-14 00:36:45,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 00:36:45,497 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-14 00:36:45,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:36:45,498 INFO L225 Difference]: With dead ends: 16 [2024-10-14 00:36:45,498 INFO L226 Difference]: Without dead ends: 12 [2024-10-14 00:36:45,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-14 00:36:45,499 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.7s IncrementalHoareTripleChecker+Time [2024-10-14 00:36:45,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 12 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 10 Unknown, 0 Unchecked, 48.7s Time] [2024-10-14 00:36:45,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-10-14 00:36:45,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-10-14 00:36:45,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:36:45,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2024-10-14 00:36:45,504 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 9 [2024-10-14 00:36:45,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:36:45,504 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2024-10-14 00:36:45,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:36:45,505 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2024-10-14 00:36:45,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-14 00:36:45,505 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:36:45,505 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:36:45,538 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 (3)] Ended with exit code 0 [2024-10-14 00:36:45,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 00:36:45,706 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:36:45,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:36:45,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1926297876, now seen corresponding path program 1 times [2024-10-14 00:36:45,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 00:36:45,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [37715632] [2024-10-14 00:36:45,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:36:45,708 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 00:36:45,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 00:36:45,709 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 00:36:45,710 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 (4)] Waiting until timeout for monitored process [2024-10-14 00:36:53,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:36:53,170 WARN L253 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-14 00:36:53,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 00:37:08,904 WARN L286 SmtUtils]: Spent 6.05s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)