./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.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/floats-esbmc-regression/digits_bad_while.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 6f9bb533a6ae968b56a3b4121531d019ea186c25a1e8156a6682080f16505ca3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 17:10:52,995 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 17:10:53,096 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 17:10:53,101 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 17:10:53,102 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 17:10:53,128 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 17:10:53,128 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 17:10:53,129 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 17:10:53,129 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 17:10:53,130 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 17:10:53,130 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 17:10:53,130 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 17:10:53,131 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 17:10:53,131 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 17:10:53,131 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 17:10:53,131 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 17:10:53,132 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 17:10:53,132 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 17:10:53,132 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 17:10:53,132 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 17:10:53,133 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 17:10:53,135 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 17:10:53,135 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 17:10:53,135 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 17:10:53,136 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 17:10:53,136 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 17:10:53,136 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 17:10:53,136 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 17:10:53,136 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 17:10:53,137 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 17:10:53,137 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 17:10:53,137 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 17:10:53,137 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 17:10:53,137 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 17:10:53,138 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 17:10:53,138 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 17:10:53,138 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 17:10:53,141 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 17:10:53,141 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 17:10:53,141 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 17:10:53,141 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 17:10:53,141 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 17:10:53,141 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f9bb533a6ae968b56a3b4121531d019ea186c25a1e8156a6682080f16505ca3 [2024-10-12 17:10:53,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 17:10:53,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 17:10:53,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 17:10:53,424 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 17:10:53,424 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 17:10:53,425 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c [2024-10-12 17:10:54,762 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 17:10:54,968 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 17:10:54,968 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c [2024-10-12 17:10:54,982 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdce77c6a/1f6c95ed1392484f891d8673b5a02837/FLAGc99a30139 [2024-10-12 17:10:54,997 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdce77c6a/1f6c95ed1392484f891d8673b5a02837 [2024-10-12 17:10:54,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 17:10:55,001 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 17:10:55,003 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 17:10:55,003 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 17:10:55,014 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 17:10:55,014 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 05:10:54" (1/1) ... [2024-10-12 17:10:55,015 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c0fc36c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:10:55, skipping insertion in model container [2024-10-12 17:10:55,016 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 05:10:54" (1/1) ... [2024-10-12 17:10:55,033 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 17:10:55,159 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/floats-esbmc-regression/digits_bad_while.c[321,334] [2024-10-12 17:10:55,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 17:10:55,180 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 17:10:55,189 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/floats-esbmc-regression/digits_bad_while.c[321,334] [2024-10-12 17:10:55,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 17:10:55,205 INFO L204 MainTranslator]: Completed translation [2024-10-12 17:10:55,206 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:10:55 WrapperNode [2024-10-12 17:10:55,206 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 17:10:55,207 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 17:10:55,207 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 17:10:55,207 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 17:10:55,214 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:10:55" (1/1) ... [2024-10-12 17:10:55,219 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:10:55" (1/1) ... [2024-10-12 17:10:55,232 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 30 [2024-10-12 17:10:55,232 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 17:10:55,233 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 17:10:55,233 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 17:10:55,233 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 17:10:55,242 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:10:55" (1/1) ... [2024-10-12 17:10:55,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:10:55" (1/1) ... [2024-10-12 17:10:55,243 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:10:55" (1/1) ... [2024-10-12 17:10:55,253 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 17:10:55,254 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:10:55" (1/1) ... [2024-10-12 17:10:55,254 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:10:55" (1/1) ... [2024-10-12 17:10:55,257 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:10:55" (1/1) ... [2024-10-12 17:10:55,259 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:10:55" (1/1) ... [2024-10-12 17:10:55,260 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:10:55" (1/1) ... [2024-10-12 17:10:55,260 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:10:55" (1/1) ... [2024-10-12 17:10:55,261 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 17:10:55,262 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 17:10:55,262 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 17:10:55,262 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 17:10:55,263 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:10:55" (1/1) ... [2024-10-12 17:10:55,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 17:10:55,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:10:55,300 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 17:10:55,302 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 17:10:55,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 17:10:55,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 17:10:55,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 17:10:55,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 17:10:55,388 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 17:10:55,390 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 17:10:55,467 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-10-12 17:10:55,468 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 17:10:55,481 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 17:10:55,481 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 17:10:55,481 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:10:55 BoogieIcfgContainer [2024-10-12 17:10:55,482 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 17:10:55,483 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 17:10:55,483 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 17:10:55,489 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 17:10:55,489 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 05:10:54" (1/3) ... [2024-10-12 17:10:55,490 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd4352b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 05:10:55, skipping insertion in model container [2024-10-12 17:10:55,490 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:10:55" (2/3) ... [2024-10-12 17:10:55,490 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd4352b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 05:10:55, skipping insertion in model container [2024-10-12 17:10:55,491 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:10:55" (3/3) ... [2024-10-12 17:10:55,492 INFO L112 eAbstractionObserver]: Analyzing ICFG digits_bad_while.c [2024-10-12 17:10:55,510 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 17:10:55,511 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 17:10:55,571 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 17:10:55,577 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;@226d2885, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 17:10:55,579 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 17:10:55,582 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 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 17:10:55,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-12 17:10:55,587 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:10:55,587 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-12 17:10:55,590 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:10:55,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:10:55,595 INFO L85 PathProgramCache]: Analyzing trace with hash 57541414, now seen corresponding path program 1 times [2024-10-12 17:10:55,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:10:55,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950545985] [2024-10-12 17:10:55,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:10:55,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:10:55,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 17:10:55,702 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 17:10:55,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 17:10:55,726 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 17:10:55,728 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-12 17:10:55,730 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-12 17:10:55,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 17:10:55,735 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-10-12 17:10:55,751 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-12 17:10:55,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 05:10:55 BoogieIcfgContainer [2024-10-12 17:10:55,754 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-12 17:10:55,754 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-12 17:10:55,754 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-12 17:10:55,754 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-12 17:10:55,755 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:10:55" (3/4) ... [2024-10-12 17:10:55,758 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-12 17:10:55,759 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-12 17:10:55,760 INFO L158 Benchmark]: Toolchain (without parser) took 758.55ms. Allocated memory is still 239.1MB. Free memory was 208.2MB in the beginning and 172.3MB in the end (delta: 35.9MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. [2024-10-12 17:10:55,761 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 134.2MB. Free memory is still 96.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 17:10:55,761 INFO L158 Benchmark]: CACSL2BoogieTranslator took 203.01ms. Allocated memory is still 239.1MB. Free memory was 208.0MB in the beginning and 201.7MB in the end (delta: 6.3MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. [2024-10-12 17:10:55,762 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.68ms. Allocated memory is still 239.1MB. Free memory was 201.7MB in the beginning and 200.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 17:10:55,762 INFO L158 Benchmark]: Boogie Preprocessor took 28.39ms. Allocated memory is still 239.1MB. Free memory was 199.6MB in the beginning and 198.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 17:10:55,762 INFO L158 Benchmark]: RCFGBuilder took 219.80ms. Allocated memory is still 239.1MB. Free memory was 198.5MB in the beginning and 188.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-12 17:10:55,763 INFO L158 Benchmark]: TraceAbstraction took 270.47ms. Allocated memory is still 239.1MB. Free memory was 187.0MB in the beginning and 172.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-12 17:10:55,763 INFO L158 Benchmark]: Witness Printer took 4.52ms. Allocated memory is still 239.1MB. Free memory is still 172.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 17:10:55,765 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 134.2MB. Free memory is still 96.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 203.01ms. Allocated memory is still 239.1MB. Free memory was 208.0MB in the beginning and 201.7MB in the end (delta: 6.3MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.68ms. Allocated memory is still 239.1MB. Free memory was 201.7MB in the beginning and 200.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.39ms. Allocated memory is still 239.1MB. Free memory was 199.6MB in the beginning and 198.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 219.80ms. Allocated memory is still 239.1MB. Free memory was 198.5MB in the beginning and 188.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 270.47ms. Allocated memory is still 239.1MB. Free memory was 187.0MB in the beginning and 172.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 4.52ms. Allocated memory is still 239.1MB. Free memory is still 172.3MB. 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: 4]: 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 someBinaryLONGDOUBLEComparisonOperation at line 12, overapproximation of someBinaryArithmeticDOUBLEoperation at line 8. Possible FailurePath: [L8] long double x = 1.0/7.0; [L9] long long res = 0; [L11] int i = 1; VAL [i=1, res=0] [L12] COND FALSE !(x != 0) VAL [i=1, res=0] [L19] CALL __VERIFIER_assert(res > 67050) [L4] COND TRUE !(cond) [L4] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 17:10:55,788 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/floats-esbmc-regression/digits_bad_while.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 6f9bb533a6ae968b56a3b4121531d019ea186c25a1e8156a6682080f16505ca3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 17:10:57,883 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 17:10:57,941 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-10-12 17:10:57,954 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 17:10:57,956 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 17:10:57,985 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 17:10:57,987 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 17:10:57,989 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 17:10:57,990 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 17:10:57,990 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 17:10:57,990 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 17:10:57,990 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 17:10:57,991 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 17:10:57,991 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 17:10:57,991 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 17:10:57,991 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 17:10:57,992 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 17:10:57,992 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 17:10:57,996 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 17:10:57,996 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 17:10:57,996 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 17:10:57,997 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 17:10:57,997 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 17:10:57,997 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-12 17:10:57,997 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-12 17:10:58,000 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 17:10:58,001 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-12 17:10:58,001 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 17:10:58,001 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 17:10:58,001 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 17:10:58,002 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 17:10:58,002 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 17:10:58,002 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 17:10:58,002 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 17:10:58,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 17:10:58,002 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 17:10:58,003 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 17:10:58,003 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 17:10:58,003 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-12 17:10:58,003 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-12 17:10:58,003 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 17:10:58,004 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 17:10:58,004 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 17:10:58,004 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 17:10:58,004 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-12 17:10:58,004 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f9bb533a6ae968b56a3b4121531d019ea186c25a1e8156a6682080f16505ca3 [2024-10-12 17:10:58,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 17:10:58,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 17:10:58,328 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 17:10:58,329 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 17:10:58,330 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 17:10:58,331 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c [2024-10-12 17:10:59,783 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 17:10:59,920 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 17:10:59,920 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c [2024-10-12 17:10:59,926 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26658bcc1/efa94f1f71674c3b8256c8dc65ce8d85/FLAGa837a4806 [2024-10-12 17:10:59,939 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26658bcc1/efa94f1f71674c3b8256c8dc65ce8d85 [2024-10-12 17:10:59,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 17:10:59,942 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 17:10:59,944 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 17:10:59,944 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 17:10:59,948 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 17:10:59,949 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 05:10:59" (1/1) ... [2024-10-12 17:10:59,950 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@500fa8cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:10:59, skipping insertion in model container [2024-10-12 17:10:59,950 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 05:10:59" (1/1) ... [2024-10-12 17:10:59,963 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 17:11:00,110 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/floats-esbmc-regression/digits_bad_while.c[321,334] [2024-10-12 17:11:00,126 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 17:11:00,139 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 17:11:00,148 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/floats-esbmc-regression/digits_bad_while.c[321,334] [2024-10-12 17:11:00,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 17:11:00,167 INFO L204 MainTranslator]: Completed translation [2024-10-12 17:11:00,168 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:11:00 WrapperNode [2024-10-12 17:11:00,168 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 17:11:00,169 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 17:11:00,169 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 17:11:00,169 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 17:11:00,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:11:00" (1/1) ... [2024-10-12 17:11:00,181 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:11:00" (1/1) ... [2024-10-12 17:11:00,193 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 31 [2024-10-12 17:11:00,194 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 17:11:00,195 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 17:11:00,195 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 17:11:00,195 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 17:11:00,202 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:11:00" (1/1) ... [2024-10-12 17:11:00,203 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:11:00" (1/1) ... [2024-10-12 17:11:00,204 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:11:00" (1/1) ... [2024-10-12 17:11:00,220 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 17:11:00,220 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:11:00" (1/1) ... [2024-10-12 17:11:00,221 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:11:00" (1/1) ... [2024-10-12 17:11:00,225 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:11:00" (1/1) ... [2024-10-12 17:11:00,227 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:11:00" (1/1) ... [2024-10-12 17:11:00,230 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:11:00" (1/1) ... [2024-10-12 17:11:00,230 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:11:00" (1/1) ... [2024-10-12 17:11:00,232 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 17:11:00,234 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 17:11:00,234 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 17:11:00,234 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 17:11:00,234 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:11:00" (1/1) ... [2024-10-12 17:11:00,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 17:11:00,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:11:00,259 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 17:11:00,268 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 17:11:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 17:11:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 17:11:00,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 17:11:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-12 17:11:00,347 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 17:11:00,349 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 17:11:04,518 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-10-12 17:11:04,518 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 17:11:04,552 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 17:11:04,553 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 17:11:04,554 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:11:04 BoogieIcfgContainer [2024-10-12 17:11:04,554 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 17:11:04,555 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 17:11:04,556 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 17:11:04,559 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 17:11:04,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 05:10:59" (1/3) ... [2024-10-12 17:11:04,561 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14bc777f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 05:11:04, skipping insertion in model container [2024-10-12 17:11:04,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:11:00" (2/3) ... [2024-10-12 17:11:04,562 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14bc777f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 05:11:04, skipping insertion in model container [2024-10-12 17:11:04,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:11:04" (3/3) ... [2024-10-12 17:11:04,564 INFO L112 eAbstractionObserver]: Analyzing ICFG digits_bad_while.c [2024-10-12 17:11:04,578 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 17:11:04,579 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 17:11:04,629 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 17:11:04,634 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;@77bea13f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 17:11:04,635 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 17:11:04,638 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 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 17:11:04,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-12 17:11:04,643 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:11:04,643 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-12 17:11:04,644 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:11:04,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:11:04,648 INFO L85 PathProgramCache]: Analyzing trace with hash 57541414, now seen corresponding path program 1 times [2024-10-12 17:11:04,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-12 17:11:04,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1996016487] [2024-10-12 17:11:04,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:11:04,660 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 17:11:04,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-12 17:11:04,662 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 17:11:04,664 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 17:11:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:11:04,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 17:11:04,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:11:04,857 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 17:11:04,858 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 17:11:04,858 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-12 17:11:04,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1996016487] [2024-10-12 17:11:04,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1996016487] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 17:11:04,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 17:11:04,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 17:11:04,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735464944] [2024-10-12 17:11:04,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 17:11:04,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 17:11:04,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-12 17:11:04,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 17:11:04,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 17:11:04,890 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 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 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 17:11:07,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.74s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-12 17:11:07,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:11:07,861 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2024-10-12 17:11:07,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 17:11:07,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2024-10-12 17:11:07,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:11:07,870 INFO L225 Difference]: With dead ends: 15 [2024-10-12 17:11:07,871 INFO L226 Difference]: Without dead ends: 7 [2024-10-12 17:11:07,872 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 17:11:07,876 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-10-12 17:11:07,877 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-10-12 17:11:07,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2024-10-12 17:11:07,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2024-10-12 17:11:07,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 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 17:11:07,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2024-10-12 17:11:07,903 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2024-10-12 17:11:07,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:11:07,903 INFO L471 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2024-10-12 17:11:07,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 17:11:07,904 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2024-10-12 17:11:07,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-12 17:11:07,904 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:11:07,904 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-12 17:11:07,909 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 17:11:08,107 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 17:11:08,107 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:11:08,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:11:08,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1785449205, now seen corresponding path program 1 times [2024-10-12 17:11:08,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-12 17:11:08,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2111770640] [2024-10-12 17:11:08,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:11:08,109 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 17:11:08,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-12 17:11:08,112 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 17:11:08,113 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 17:11:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:11:08,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 17:11:08,594 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:11:10,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 17:11:10,121 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 17:11:17,972 WARN L286 SmtUtils]: Spent 7.77s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-10-12 17:11:22,008 WARN L851 $PredicateComparison]: unable to prove that (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32))) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from false [2024-10-12 17:11:24,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-10-12 17:11:24,747 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-12 17:11:24,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2111770640] [2024-10-12 17:11:24,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2111770640] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 17:11:24,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-12 17:11:24,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2024-10-12 17:11:24,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498219529] [2024-10-12 17:11:24,748 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-12 17:11:24,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 17:11:24,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-12 17:11:24,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 17:11:24,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=12, Unknown=1, NotChecked=6, Total=30 [2024-10-12 17:11:24,750 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 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 17:11:28,817 WARN L873 $PredicateComparison]: unable to prove that (and (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32))) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) (= ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))) |c_ULTIMATE.start_main_~x~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2024-10-12 17:11:31,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.15s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-12 17:11:36,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-12 17:11:39,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.11s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-12 17:11:43,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-12 17:11:43,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:11:43,358 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2024-10-12 17:11:43,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 17:11:43,407 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 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 6 [2024-10-12 17:11:43,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:11:43,408 INFO L225 Difference]: With dead ends: 12 [2024-10-12 17:11:43,408 INFO L226 Difference]: Without dead ends: 8 [2024-10-12 17:11:43,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=13, Invalid=13, Unknown=2, NotChecked=14, Total=42 [2024-10-12 17:11:43,409 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2024-10-12 17:11:43,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 2 Unknown, 6 Unchecked, 14.5s Time] [2024-10-12 17:11:43,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2024-10-12 17:11:43,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2024-10-12 17:11:43,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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 17:11:43,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2024-10-12 17:11:43,412 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2024-10-12 17:11:43,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:11:43,413 INFO L471 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2024-10-12 17:11:43,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 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 17:11:43,413 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2024-10-12 17:11:43,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-12 17:11:43,413 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:11:43,413 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2024-10-12 17:11:43,435 INFO L540 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)] Forceful destruction successful, exit code 0 [2024-10-12 17:11:43,617 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 [2024-10-12 17:11:43,618 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:11:43,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:11:43,619 INFO L85 PathProgramCache]: Analyzing trace with hash -483984122, now seen corresponding path program 2 times [2024-10-12 17:11:43,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-12 17:11:43,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1472657977] [2024-10-12 17:11:43,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 17:11:43,620 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 17:11:43,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-12 17:11:43,622 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) [2024-10-12 17:11:43,623 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 [2024-10-12 17:11:44,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 17:11:44,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 17:11:44,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 17:11:44,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:11:52,690 WARN L286 SmtUtils]: Spent 6.92s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-10-12 17:12:13,087 WARN L286 SmtUtils]: Spent 8.26s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-10-12 17:12:13,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 17:12:13,091 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 17:12:23,149 WARN L851 $PredicateComparison]: unable to prove that (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32))) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from false [2024-10-12 17:12:32,320 WARN L286 SmtUtils]: Spent 8.19s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-10-12 17:12:36,418 WARN L851 $PredicateComparison]: unable to prove that (not (fp.eq (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|)))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero .cse0)))))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from false [2024-10-12 17:12:40,523 WARN L873 $PredicateComparison]: unable to prove that (not (fp.eq (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|)))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero .cse0)))))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from true [2024-10-12 17:12:40,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2024-10-12 17:12:40,524 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-12 17:12:40,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1472657977] [2024-10-12 17:12:40,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1472657977] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 17:12:40,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-12 17:12:40,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-10-12 17:12:40,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18792390] [2024-10-12 17:12:40,524 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-12 17:12:40,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 17:12:40,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-12 17:12:40,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 17:12:40,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=18, Unknown=4, NotChecked=18, Total=56 [2024-10-12 17:12:40,526 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 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)