./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-floats-scientific-comp/loop2-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d 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/loop-floats-scientific-comp/loop2-2.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 2214d54defcd10650ad85b05551b84060b114c89dc0a9f14233f38f030bbd558 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 17:31:53,297 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 17:31:53,355 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 17:31:53,360 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 17:31:53,360 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 17:31:53,389 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 17:31:53,391 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 17:31:53,392 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 17:31:53,392 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 17:31:53,393 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 17:31:53,394 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 17:31:53,394 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 17:31:53,394 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 17:31:53,395 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 17:31:53,396 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 17:31:53,397 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 17:31:53,397 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 17:31:53,397 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 17:31:53,397 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 17:31:53,398 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 17:31:53,398 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 17:31:53,398 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 17:31:53,399 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 17:31:53,399 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 17:31:53,399 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 17:31:53,399 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 17:31:53,400 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 17:31:53,400 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 17:31:53,400 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 17:31:53,400 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 17:31:53,401 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 17:31:53,401 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 17:31:53,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 17:31:53,401 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 17:31:53,401 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 17:31:53,402 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 17:31:53,402 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 17:31:53,402 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 17:31:53,402 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 17:31:53,402 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 17:31:53,402 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 17:31:53,403 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 17:31:53,403 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2214d54defcd10650ad85b05551b84060b114c89dc0a9f14233f38f030bbd558 [2024-10-12 17:31:53,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 17:31:53,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 17:31:53,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 17:31:53,674 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 17:31:53,675 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 17:31:53,676 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-floats-scientific-comp/loop2-2.c [2024-10-12 17:31:55,041 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 17:31:55,244 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 17:31:55,245 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-floats-scientific-comp/loop2-2.c [2024-10-12 17:31:55,261 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c593bbf69/1f950c5b4167470d802b554dc409999d/FLAG04595648e [2024-10-12 17:31:55,273 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c593bbf69/1f950c5b4167470d802b554dc409999d [2024-10-12 17:31:55,276 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 17:31:55,277 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 17:31:55,278 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 17:31:55,278 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 17:31:55,286 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 17:31:55,287 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 05:31:55" (1/1) ... [2024-10-12 17:31:55,288 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b389a70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:31:55, skipping insertion in model container [2024-10-12 17:31:55,288 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 05:31:55" (1/1) ... [2024-10-12 17:31:55,304 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 17:31:55,456 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/loop-floats-scientific-comp/loop2-2.c[474,487] [2024-10-12 17:31:55,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 17:31:55,486 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 17:31:55,497 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/loop-floats-scientific-comp/loop2-2.c[474,487] [2024-10-12 17:31:55,502 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 17:31:55,530 INFO L204 MainTranslator]: Completed translation [2024-10-12 17:31:55,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:31:55 WrapperNode [2024-10-12 17:31:55,531 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 17:31:55,532 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 17:31:55,532 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 17:31:55,532 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 17:31:55,537 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:31:55" (1/1) ... [2024-10-12 17:31:55,542 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:31:55" (1/1) ... [2024-10-12 17:31:55,556 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2024-10-12 17:31:55,556 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 17:31:55,556 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 17:31:55,557 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 17:31:55,557 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 17:31:55,564 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:31:55" (1/1) ... [2024-10-12 17:31:55,564 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:31:55" (1/1) ... [2024-10-12 17:31:55,568 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:31:55" (1/1) ... [2024-10-12 17:31:55,581 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]. [2024-10-12 17:31:55,582 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:31:55" (1/1) ... [2024-10-12 17:31:55,582 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:31:55" (1/1) ... [2024-10-12 17:31:55,591 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:31:55" (1/1) ... [2024-10-12 17:31:55,599 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:31:55" (1/1) ... [2024-10-12 17:31:55,600 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:31:55" (1/1) ... [2024-10-12 17:31:55,600 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:31:55" (1/1) ... [2024-10-12 17:31:55,603 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 17:31:55,604 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 17:31:55,604 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 17:31:55,604 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 17:31:55,605 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:31:55" (1/1) ... [2024-10-12 17:31:55,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 17:31:55,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:31:55,646 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) [2024-10-12 17:31:55,661 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 [2024-10-12 17:31:55,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 17:31:55,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 17:31:55,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 17:31:55,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 17:31:55,746 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 17:31:55,747 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 17:31:55,854 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-10-12 17:31:55,855 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 17:31:55,879 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 17:31:55,883 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 17:31:55,884 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:31:55 BoogieIcfgContainer [2024-10-12 17:31:55,884 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 17:31:55,885 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 17:31:55,885 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 17:31:55,889 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 17:31:55,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 05:31:55" (1/3) ... [2024-10-12 17:31:55,890 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48915aa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 05:31:55, skipping insertion in model container [2024-10-12 17:31:55,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:31:55" (2/3) ... [2024-10-12 17:31:55,891 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48915aa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 05:31:55, skipping insertion in model container [2024-10-12 17:31:55,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:31:55" (3/3) ... [2024-10-12 17:31:55,892 INFO L112 eAbstractionObserver]: Analyzing ICFG loop2-2.c [2024-10-12 17:31:55,904 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 17:31:55,905 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 17:31:55,948 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 17:31:55,954 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;@260ec8ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 17:31:55,954 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 17:31:55,957 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 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) [2024-10-12 17:31:55,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-12 17:31:55,961 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:31:55,962 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:31:55,963 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:31:55,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:31:55,967 INFO L85 PathProgramCache]: Analyzing trace with hash 515220282, now seen corresponding path program 1 times [2024-10-12 17:31:55,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:31:55,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197398484] [2024-10-12 17:31:55,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:31:55,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:31:56,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:31:56,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 17:31:56,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:31:56,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197398484] [2024-10-12 17:31:56,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197398484] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 17:31:56,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 17:31:56,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 17:31:56,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952288228] [2024-10-12 17:31:56,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 17:31:56,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 17:31:56,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:31:56,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 17:31:56,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 17:31:56,101 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 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 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2024-10-12 17:31:56,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:31:56,113 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2024-10-12 17:31:56,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 17:31:56,114 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2024-10-12 17:31:56,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:31:56,119 INFO L225 Difference]: With dead ends: 20 [2024-10-12 17:31:56,119 INFO L226 Difference]: Without dead ends: 9 [2024-10-12 17:31:56,122 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 [2024-10-12 17:31:56,125 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 17:31:56,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 17:31:56,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2024-10-12 17:31:56,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2024-10-12 17:31:56,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 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) [2024-10-12 17:31:56,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2024-10-12 17:31:56,168 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2024-10-12 17:31:56,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:31:56,168 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2024-10-12 17:31:56,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2024-10-12 17:31:56,172 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2024-10-12 17:31:56,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-12 17:31:56,172 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:31:56,172 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:31:56,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 17:31:56,173 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:31:56,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:31:56,173 INFO L85 PathProgramCache]: Analyzing trace with hash 568632303, now seen corresponding path program 1 times [2024-10-12 17:31:56,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:31:56,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52235315] [2024-10-12 17:31:56,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:31:56,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:31:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 17:31:56,264 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 17:31:56,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 17:31:56,373 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 17:31:56,374 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-12 17:31:56,376 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-12 17:31:56,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 17:31:56,381 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-12 17:31:56,396 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-12 17:31:56,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 05:31:56 BoogieIcfgContainer [2024-10-12 17:31:56,399 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-12 17:31:56,400 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-12 17:31:56,400 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-12 17:31:56,400 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-12 17:31:56,400 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:31:55" (3/4) ... [2024-10-12 17:31:56,403 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-12 17:31:56,404 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-12 17:31:56,404 INFO L158 Benchmark]: Toolchain (without parser) took 1127.51ms. Allocated memory is still 142.6MB. Free memory was 116.1MB in the beginning and 109.2MB in the end (delta: 6.9MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. [2024-10-12 17:31:56,405 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 117.4MB. Free memory is still 69.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 17:31:56,405 INFO L158 Benchmark]: CACSL2BoogieTranslator took 253.26ms. Allocated memory is still 142.6MB. Free memory was 115.4MB in the beginning and 103.6MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-12 17:31:56,406 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.26ms. Allocated memory is still 142.6MB. Free memory was 103.6MB in the beginning and 101.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 17:31:56,406 INFO L158 Benchmark]: Boogie Preprocessor took 46.77ms. Allocated memory is still 142.6MB. Free memory was 101.5MB in the beginning and 100.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 17:31:56,406 INFO L158 Benchmark]: RCFGBuilder took 279.91ms. Allocated memory is still 142.6MB. Free memory was 100.1MB in the beginning and 88.2MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-12 17:31:56,406 INFO L158 Benchmark]: TraceAbstraction took 514.21ms. Allocated memory is still 142.6MB. Free memory was 87.5MB in the beginning and 110.0MB in the end (delta: -22.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 17:31:56,407 INFO L158 Benchmark]: Witness Printer took 4.47ms. Allocated memory is still 142.6MB. Free memory was 110.0MB in the beginning and 109.2MB in the end (delta: 853.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 17:31:56,408 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 117.4MB. Free memory is still 69.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 253.26ms. Allocated memory is still 142.6MB. Free memory was 115.4MB in the beginning and 103.6MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.26ms. Allocated memory is still 142.6MB. Free memory was 103.6MB in the beginning and 101.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.77ms. Allocated memory is still 142.6MB. Free memory was 101.5MB in the beginning and 100.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 279.91ms. Allocated memory is still 142.6MB. Free memory was 100.1MB in the beginning and 88.2MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 514.21ms. Allocated memory is still 142.6MB. Free memory was 87.5MB in the beginning and 110.0MB in the end (delta: -22.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.47ms. Allocated memory is still 142.6MB. Free memory was 110.0MB in the beginning and 109.2MB in the end (delta: 853.8kB). Peak memory consumption was 2.1MB. 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: 12]: 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 49, overapproximation of someBinaryArithmeticFLOAToperation at line 32. Possible FailurePath: [L14] float pi = 3.14159 ; [L20] float x = __VERIFIER_nondet_float() ; [L21] float octant = pi/3 ; [L22] CALL assume_abort_if_not(x > octant && x < pi) [L10] COND FALSE !(!cond) VAL [pi=314159/100000] [L22] RET assume_abort_if_not(x > octant && x < pi) [L23] float oddExp = x ; [L24] float evenExp = 1.0 ; [L25] float term = x ; [L26] unsigned int count = 2 ; [L27] int multFactor = 0 ; [L28] int temp ; VAL [count=2, pi=314159/100000] [L30] COND TRUE 1 [L32] term = term * (x/count) [L33] multFactor = (count>>1 % 2 == 0) ? 1 : -1 [L35] evenExp = evenExp + multFactor*term [L37] count++ [L39] term = term * (x/count) [L41] oddExp = oddExp + multFactor*term [L43] count++ [L45] temp = __VERIFIER_nondet_int() [L46] COND TRUE temp == 0 VAL [count=4, pi=314159/100000] [L49] CALL __VERIFIER_assert( oddExp >= evenExp ) [L12] COND TRUE !(cond) VAL [pi=314159/100000] [L12] reach_error() VAL [pi=314159/100000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, 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, 9 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 9 mSDtfsCounter, 2 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=11occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 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 [2024-10-12 17:31:56,445 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/loop-floats-scientific-comp/loop2-2.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 2214d54defcd10650ad85b05551b84060b114c89dc0a9f14233f38f030bbd558 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 17:31:58,515 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 17:31:58,588 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-10-12 17:31:58,594 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 17:31:58,595 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 17:31:58,621 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 17:31:58,624 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 17:31:58,625 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 17:31:58,625 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 17:31:58,628 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 17:31:58,628 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 17:31:58,628 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 17:31:58,629 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 17:31:58,629 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 17:31:58,629 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 17:31:58,629 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 17:31:58,630 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 17:31:58,630 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 17:31:58,630 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 17:31:58,630 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 17:31:58,631 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 17:31:58,635 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 17:31:58,636 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 17:31:58,636 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-12 17:31:58,636 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-12 17:31:58,636 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 17:31:58,637 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-12 17:31:58,637 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 17:31:58,637 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 17:31:58,638 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 17:31:58,638 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 17:31:58,638 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 17:31:58,639 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 17:31:58,639 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 17:31:58,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 17:31:58,640 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 17:31:58,640 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 17:31:58,640 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 17:31:58,640 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-12 17:31:58,641 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-12 17:31:58,641 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 17:31:58,641 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 17:31:58,641 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 17:31:58,641 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 17:31:58,641 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-12 17:31:58,642 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2214d54defcd10650ad85b05551b84060b114c89dc0a9f14233f38f030bbd558 [2024-10-12 17:31:58,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 17:31:58,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 17:31:58,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 17:31:58,943 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 17:31:58,944 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 17:31:58,946 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-floats-scientific-comp/loop2-2.c [2024-10-12 17:32:00,466 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 17:32:00,644 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 17:32:00,644 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-floats-scientific-comp/loop2-2.c [2024-10-12 17:32:00,656 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6ae6f9d7/1ecabc3f66ec4986bb66b7901a7e650d/FLAG61669e258 [2024-10-12 17:32:00,670 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6ae6f9d7/1ecabc3f66ec4986bb66b7901a7e650d [2024-10-12 17:32:00,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 17:32:00,675 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 17:32:00,676 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 17:32:00,677 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 17:32:00,682 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 17:32:00,683 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 05:32:00" (1/1) ... [2024-10-12 17:32:00,685 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@614c36da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:32:00, skipping insertion in model container [2024-10-12 17:32:00,685 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 05:32:00" (1/1) ... [2024-10-12 17:32:00,702 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 17:32:00,853 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/loop-floats-scientific-comp/loop2-2.c[474,487] [2024-10-12 17:32:00,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 17:32:00,891 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 17:32:00,902 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/loop-floats-scientific-comp/loop2-2.c[474,487] [2024-10-12 17:32:00,911 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 17:32:00,929 INFO L204 MainTranslator]: Completed translation [2024-10-12 17:32:00,930 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:32:00 WrapperNode [2024-10-12 17:32:00,930 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 17:32:00,931 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 17:32:00,931 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 17:32:00,931 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 17:32:00,937 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:32:00" (1/1) ... [2024-10-12 17:32:00,947 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:32:00" (1/1) ... [2024-10-12 17:32:00,963 INFO L138 Inliner]: procedures = 16, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2024-10-12 17:32:00,964 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 17:32:00,966 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 17:32:00,966 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 17:32:00,966 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 17:32:00,975 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:32:00" (1/1) ... [2024-10-12 17:32:00,975 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:32:00" (1/1) ... [2024-10-12 17:32:00,978 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:32:00" (1/1) ... [2024-10-12 17:32:00,993 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]. [2024-10-12 17:32:00,994 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:32:00" (1/1) ... [2024-10-12 17:32:00,994 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:32:00" (1/1) ... [2024-10-12 17:32:01,005 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:32:00" (1/1) ... [2024-10-12 17:32:01,008 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:32:00" (1/1) ... [2024-10-12 17:32:01,009 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:32:00" (1/1) ... [2024-10-12 17:32:01,010 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:32:00" (1/1) ... [2024-10-12 17:32:01,013 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 17:32:01,016 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 17:32:01,016 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 17:32:01,016 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 17:32:01,017 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:32:00" (1/1) ... [2024-10-12 17:32:01,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 17:32:01,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:32:01,051 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) [2024-10-12 17:32:01,061 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 [2024-10-12 17:32:01,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 17:32:01,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-12 17:32:01,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 17:32:01,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 17:32:01,155 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 17:32:01,157 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 17:32:05,607 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-10-12 17:32:05,607 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 17:32:05,642 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 17:32:05,642 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 17:32:05,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:32:05 BoogieIcfgContainer [2024-10-12 17:32:05,643 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 17:32:05,644 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 17:32:05,644 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 17:32:05,646 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 17:32:05,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 05:32:00" (1/3) ... [2024-10-12 17:32:05,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e57e6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 05:32:05, skipping insertion in model container [2024-10-12 17:32:05,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:32:00" (2/3) ... [2024-10-12 17:32:05,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e57e6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 05:32:05, skipping insertion in model container [2024-10-12 17:32:05,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:32:05" (3/3) ... [2024-10-12 17:32:05,649 INFO L112 eAbstractionObserver]: Analyzing ICFG loop2-2.c [2024-10-12 17:32:05,667 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 17:32:05,669 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 17:32:05,725 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 17:32:05,731 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;@185239fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 17:32:05,732 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 17:32:05,735 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 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) [2024-10-12 17:32:05,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-12 17:32:05,740 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:32:05,741 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:32:05,742 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:32:05,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:32:05,746 INFO L85 PathProgramCache]: Analyzing trace with hash 515220282, now seen corresponding path program 1 times [2024-10-12 17:32:05,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-12 17:32:05,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1711883975] [2024-10-12 17:32:05,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:32:05,758 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 [2024-10-12 17:32:05,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-12 17:32:05,766 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) [2024-10-12 17:32:05,797 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 [2024-10-12 17:32:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:32:05,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-10-12 17:32:05,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:32:05,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 17:32:05,919 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 17:32:05,920 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-12 17:32:05,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1711883975] [2024-10-12 17:32:05,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1711883975] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 17:32:05,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 17:32:05,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 17:32:05,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766270400] [2024-10-12 17:32:05,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 17:32:05,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 17:32:05,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-12 17:32:05,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 17:32:05,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 17:32:05,945 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 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 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2024-10-12 17:32:05,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:32:05,979 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2024-10-12 17:32:05,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 17:32:05,982 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2024-10-12 17:32:05,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:32:05,987 INFO L225 Difference]: With dead ends: 20 [2024-10-12 17:32:05,987 INFO L226 Difference]: Without dead ends: 9 [2024-10-12 17:32:05,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 17:32:05,992 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 17:32:05,993 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 17:32:06,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2024-10-12 17:32:06,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2024-10-12 17:32:06,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 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) [2024-10-12 17:32:06,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2024-10-12 17:32:06,016 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2024-10-12 17:32:06,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:32:06,017 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2024-10-12 17:32:06,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2024-10-12 17:32:06,017 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2024-10-12 17:32:06,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-12 17:32:06,017 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:32:06,018 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:32:06,023 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 [2024-10-12 17:32:06,218 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 [2024-10-12 17:32:06,219 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:32:06,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:32:06,220 INFO L85 PathProgramCache]: Analyzing trace with hash 568632303, now seen corresponding path program 1 times [2024-10-12 17:32:06,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-12 17:32:06,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [282426852] [2024-10-12 17:32:06,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:32:06,222 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 [2024-10-12 17:32:06,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-12 17:32:06,223 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) [2024-10-12 17:32:06,225 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 [2024-10-12 17:32:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:32:09,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-12 17:32:09,995 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:32:25,703 WARN L286 SmtUtils]: Spent 8.15s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-10-12 17:32:33,821 WARN L286 SmtUtils]: Spent 8.12s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-10-12 17:32:41,976 WARN L286 SmtUtils]: Spent 8.16s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-10-12 17:32:46,024 WARN L851 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv4294967295 32))) (.cse1 (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| ((_ to_fp_unsigned 8 24) roundNearestTiesToEven (_ bv2 32))))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 314159.0 100000.0))))) (and (= |c_ULTIMATE.start_main_~evenExp~0#1| (fp.add roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (fp.mul roundNearestTiesToEven .cse0 .cse1))) (= (fp.add roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| (fp.mul roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| ((_ to_fp_unsigned 8 24) roundNearestTiesToEven (_ bv3 32)))))) |c_ULTIMATE.start_main_~oddExp~0#1|) (fp.lt |ULTIMATE.start_main_~x~0#1| .cse2) (fp.gt |ULTIMATE.start_main_~x~0#1| (fp.div roundNearestTiesToEven .cse2 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv3 32))))))) is different from false [2024-10-12 17:32:50,058 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv4294967295 32))) (.cse1 (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| ((_ to_fp_unsigned 8 24) roundNearestTiesToEven (_ bv2 32))))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 314159.0 100000.0))))) (and (= |c_ULTIMATE.start_main_~evenExp~0#1| (fp.add roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (fp.mul roundNearestTiesToEven .cse0 .cse1))) (= (fp.add roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| (fp.mul roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| ((_ to_fp_unsigned 8 24) roundNearestTiesToEven (_ bv3 32)))))) |c_ULTIMATE.start_main_~oddExp~0#1|) (fp.lt |ULTIMATE.start_main_~x~0#1| .cse2) (fp.gt |ULTIMATE.start_main_~x~0#1| (fp.div roundNearestTiesToEven .cse2 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv3 32))))))) is different from true [2024-10-12 17:32:58,232 WARN L286 SmtUtils]: Spent 8.17s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-10-12 17:33:06,418 WARN L286 SmtUtils]: Spent 8.18s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-10-12 17:33:14,540 WARN L286 SmtUtils]: Spent 8.12s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-10-12 17:33:22,690 WARN L286 SmtUtils]: Spent 8.15s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-10-12 17:33:34,973 WARN L286 SmtUtils]: Spent 8.15s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-10-12 17:33:43,070 WARN L286 SmtUtils]: Spent 8.10s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)