./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/square_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/square_3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c5accd8423b70ca59158b13da79e2b7f06e66e009ebcbae27877bbff47ee55bb --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 02:41:32,175 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 02:41:32,230 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 02:41:32,236 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 02:41:32,236 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 02:41:32,251 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 02:41:32,254 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 02:41:32,254 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 02:41:32,255 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 02:41:32,255 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 02:41:32,255 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 02:41:32,255 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 02:41:32,255 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 02:41:32,255 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 02:41:32,255 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 02:41:32,255 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 02:41:32,255 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 02:41:32,255 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 02:41:32,255 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 02:41:32,255 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 02:41:32,256 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 02:41:32,256 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 02:41:32,256 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 02:41:32,256 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 02:41:32,256 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 02:41:32,256 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 02:41:32,256 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 02:41:32,256 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 02:41:32,256 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 02:41:32,256 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 02:41:32,256 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 02:41:32,256 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 02:41:32,256 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 02:41:32,256 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 02:41:32,256 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 02:41:32,256 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 02:41:32,256 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 02:41:32,256 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 02:41:32,257 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 02:41:32,257 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 02:41:32,257 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 02:41:32,257 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 02:41:32,257 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 02:41:32,257 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/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 -> c5accd8423b70ca59158b13da79e2b7f06e66e009ebcbae27877bbff47ee55bb [2025-03-08 02:41:32,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 02:41:32,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 02:41:32,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 02:41:32,480 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 02:41:32,480 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 02:41:32,481 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/square_3.i [2025-03-08 02:41:33,598 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5066bf57c/d2ea93ae027b4071a11946896475a2ec/FLAGf43cb9102 [2025-03-08 02:41:33,819 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 02:41:33,823 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/square_3.i [2025-03-08 02:41:33,828 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5066bf57c/d2ea93ae027b4071a11946896475a2ec/FLAGf43cb9102 [2025-03-08 02:41:34,167 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5066bf57c/d2ea93ae027b4071a11946896475a2ec [2025-03-08 02:41:34,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 02:41:34,170 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 02:41:34,171 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 02:41:34,171 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 02:41:34,174 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 02:41:34,174 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 02:41:34" (1/1) ... [2025-03-08 02:41:34,175 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48d4705a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:41:34, skipping insertion in model container [2025-03-08 02:41:34,175 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 02:41:34" (1/1) ... [2025-03-08 02:41:34,185 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 02:41:34,292 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/square_3.i[1629,1642] [2025-03-08 02:41:34,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 02:41:34,303 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 02:41:34,314 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/square_3.i[1629,1642] [2025-03-08 02:41:34,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 02:41:34,325 INFO L204 MainTranslator]: Completed translation [2025-03-08 02:41:34,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:41:34 WrapperNode [2025-03-08 02:41:34,326 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 02:41:34,327 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 02:41:34,327 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 02:41:34,327 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 02:41:34,332 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:41:34" (1/1) ... [2025-03-08 02:41:34,338 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:41:34" (1/1) ... [2025-03-08 02:41:34,347 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2025-03-08 02:41:34,348 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 02:41:34,348 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 02:41:34,348 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 02:41:34,348 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 02:41:34,353 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:41:34" (1/1) ... [2025-03-08 02:41:34,353 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:41:34" (1/1) ... [2025-03-08 02:41:34,353 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:41:34" (1/1) ... [2025-03-08 02:41:34,359 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-08 02:41:34,359 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:41:34" (1/1) ... [2025-03-08 02:41:34,359 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:41:34" (1/1) ... [2025-03-08 02:41:34,361 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:41:34" (1/1) ... [2025-03-08 02:41:34,362 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:41:34" (1/1) ... [2025-03-08 02:41:34,362 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:41:34" (1/1) ... [2025-03-08 02:41:34,362 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:41:34" (1/1) ... [2025-03-08 02:41:34,363 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 02:41:34,364 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 02:41:34,364 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 02:41:34,364 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 02:41:34,365 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:41:34" (1/1) ... [2025-03-08 02:41:34,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 02:41:34,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 02:41:34,389 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) [2025-03-08 02:41:34,392 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 [2025-03-08 02:41:34,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 02:41:34,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 02:41:34,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 02:41:34,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 02:41:34,448 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 02:41:34,449 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 02:41:34,502 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2025-03-08 02:41:34,502 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 02:41:34,511 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 02:41:34,511 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 02:41:34,512 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 02:41:34 BoogieIcfgContainer [2025-03-08 02:41:34,512 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 02:41:34,513 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 02:41:34,514 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 02:41:34,517 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 02:41:34,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 02:41:34" (1/3) ... [2025-03-08 02:41:34,518 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a6bc663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 02:41:34, skipping insertion in model container [2025-03-08 02:41:34,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:41:34" (2/3) ... [2025-03-08 02:41:34,518 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a6bc663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 02:41:34, skipping insertion in model container [2025-03-08 02:41:34,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 02:41:34" (3/3) ... [2025-03-08 02:41:34,520 INFO L128 eAbstractionObserver]: Analyzing ICFG square_3.i [2025-03-08 02:41:34,531 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 02:41:34,532 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG square_3.i that has 1 procedures, 11 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-08 02:41:34,572 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 02:41:34,583 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;@3aaffbe3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 02:41:34,584 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 02:41:34,586 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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) [2025-03-08 02:41:34,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-08 02:41:34,589 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:41:34,590 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-08 02:41:34,590 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:41:34,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:41:34,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1211904766, now seen corresponding path program 1 times [2025-03-08 02:41:34,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:41:34,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914299814] [2025-03-08 02:41:34,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:41:34,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:41:34,657 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-08 02:41:34,668 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-08 02:41:34,668 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:41:34,669 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:41:34,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 02:41:34,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:41:34,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914299814] [2025-03-08 02:41:34,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914299814] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:41:34,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:41:34,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 02:41:34,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180804628] [2025-03-08 02:41:34,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:41:34,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 02:41:34,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:41:34,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 02:41:34,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 02:41:34,721 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2025-03-08 02:41:34,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:41:34,727 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2025-03-08 02:41:34,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 02:41:34,729 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 [2025-03-08 02:41:34,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:41:34,732 INFO L225 Difference]: With dead ends: 19 [2025-03-08 02:41:34,733 INFO L226 Difference]: Without dead ends: 7 [2025-03-08 02:41:34,734 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 02:41:34,737 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 02:41:34,738 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 02:41:34,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2025-03-08 02:41:34,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2025-03-08 02:41:34,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 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) [2025-03-08 02:41:34,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2025-03-08 02:41:34,760 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2025-03-08 02:41:34,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:41:34,761 INFO L471 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2025-03-08 02:41:34,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2025-03-08 02:41:34,762 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2025-03-08 02:41:34,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-08 02:41:34,763 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:41:34,763 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-08 02:41:34,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 02:41:34,764 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:41:34,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:41:34,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1211934557, now seen corresponding path program 1 times [2025-03-08 02:41:34,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:41:34,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107872281] [2025-03-08 02:41:34,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:41:34,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:41:34,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-08 02:41:34,777 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-08 02:41:34,780 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:41:34,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 02:41:34,780 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-08 02:41:34,783 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-08 02:41:34,789 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-08 02:41:34,789 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:41:34,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 02:41:34,801 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-08 02:41:34,802 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-08 02:41:34,803 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-08 02:41:34,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 02:41:34,807 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-08 02:41:34,816 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-08 02:41:34,820 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.03 02:41:34 BoogieIcfgContainer [2025-03-08 02:41:34,821 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-08 02:41:34,822 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-08 02:41:34,822 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-08 02:41:34,822 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-08 02:41:34,823 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 02:41:34" (3/4) ... [2025-03-08 02:41:34,824 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-08 02:41:34,825 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-08 02:41:34,826 INFO L158 Benchmark]: Toolchain (without parser) took 655.81ms. Allocated memory is still 142.6MB. Free memory was 111.0MB in the beginning and 69.9MB in the end (delta: 41.0MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-03-08 02:41:34,826 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 122.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 02:41:34,826 INFO L158 Benchmark]: CACSL2BoogieTranslator took 156.06ms. Allocated memory is still 142.6MB. Free memory was 111.0MB in the beginning and 100.0MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 02:41:34,827 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.68ms. Allocated memory is still 142.6MB. Free memory was 100.0MB in the beginning and 99.0MB in the end (delta: 997.7kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 02:41:34,827 INFO L158 Benchmark]: Boogie Preprocessor took 15.10ms. Allocated memory is still 142.6MB. Free memory was 99.0MB in the beginning and 98.1MB in the end (delta: 911.2kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 02:41:34,828 INFO L158 Benchmark]: IcfgBuilder took 147.98ms. Allocated memory is still 142.6MB. Free memory was 98.1MB in the beginning and 88.7MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 02:41:34,828 INFO L158 Benchmark]: TraceAbstraction took 307.36ms. Allocated memory is still 142.6MB. Free memory was 87.7MB in the beginning and 69.9MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-08 02:41:34,828 INFO L158 Benchmark]: Witness Printer took 3.22ms. Allocated memory is still 142.6MB. Free memory is still 69.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 02:41:34,830 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 122.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 156.06ms. Allocated memory is still 142.6MB. Free memory was 111.0MB in the beginning and 100.0MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.68ms. Allocated memory is still 142.6MB. Free memory was 100.0MB in the beginning and 99.0MB in the end (delta: 997.7kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 15.10ms. Allocated memory is still 142.6MB. Free memory was 99.0MB in the beginning and 98.1MB in the end (delta: 911.2kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 147.98ms. Allocated memory is still 142.6MB. Free memory was 98.1MB in the beginning and 88.7MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 307.36ms. Allocated memory is still 142.6MB. Free memory was 87.7MB in the beginning and 69.9MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 3.22ms. Allocated memory is still 142.6MB. Free memory is still 69.9MB. 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: 38]: 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 37, overapproximation of someBinaryFLOATComparisonOperation at line 30, overapproximation of someBinaryArithmeticFLOAToperation at line 35. Possible FailurePath: [L29] float IN = __VERIFIER_nondet_float(); [L30] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L24] COND FALSE !(!cond) [L30] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L32] float x = IN; [L34-L35] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L37] COND TRUE !(result >= 0.0f && result < 1.39843f) [L38] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 12 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, 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, 10 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 10 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 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, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-03-08 02:41:34,846 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/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/square_3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c5accd8423b70ca59158b13da79e2b7f06e66e009ebcbae27877bbff47ee55bb --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 02:41:36,670 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 02:41:36,759 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2025-03-08 02:41:36,767 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 02:41:36,770 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 02:41:36,792 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 02:41:36,793 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 02:41:36,793 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 02:41:36,794 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 02:41:36,794 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 02:41:36,794 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 02:41:36,795 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 02:41:36,795 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 02:41:36,795 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 02:41:36,795 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 02:41:36,796 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 02:41:36,796 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 02:41:36,796 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 02:41:36,796 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 02:41:36,796 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 02:41:36,796 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 02:41:36,796 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 02:41:36,796 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 02:41:36,796 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-08 02:41:36,796 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-08 02:41:36,797 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-08 02:41:36,797 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 02:41:36,797 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 02:41:36,797 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 02:41:36,797 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 02:41:36,797 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 02:41:36,797 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 02:41:36,798 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 02:41:36,798 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 02:41:36,798 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 02:41:36,798 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 02:41:36,798 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 02:41:36,798 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 02:41:36,798 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 02:41:36,798 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-08 02:41:36,798 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-08 02:41:36,798 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 02:41:36,799 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 02:41:36,799 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 02:41:36,799 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 02:41:36,799 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/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 -> c5accd8423b70ca59158b13da79e2b7f06e66e009ebcbae27877bbff47ee55bb [2025-03-08 02:41:37,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 02:41:37,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 02:41:37,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 02:41:37,077 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 02:41:37,077 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 02:41:37,078 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/square_3.i [2025-03-08 02:41:38,180 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a7a5e46c/7b8fac1cad47473181b5ee4417112954/FLAGb950431ad [2025-03-08 02:41:38,365 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 02:41:38,366 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/square_3.i [2025-03-08 02:41:38,371 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a7a5e46c/7b8fac1cad47473181b5ee4417112954/FLAGb950431ad [2025-03-08 02:41:38,386 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a7a5e46c/7b8fac1cad47473181b5ee4417112954 [2025-03-08 02:41:38,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 02:41:38,391 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 02:41:38,392 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 02:41:38,393 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 02:41:38,396 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 02:41:38,397 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 02:41:38" (1/1) ... [2025-03-08 02:41:38,398 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f689091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:41:38, skipping insertion in model container [2025-03-08 02:41:38,398 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 02:41:38" (1/1) ... [2025-03-08 02:41:38,410 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 02:41:38,525 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/square_3.i[1629,1642] [2025-03-08 02:41:38,530 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 02:41:38,543 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 02:41:38,554 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/square_3.i[1629,1642] [2025-03-08 02:41:38,556 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 02:41:38,571 INFO L204 MainTranslator]: Completed translation [2025-03-08 02:41:38,573 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:41:38 WrapperNode [2025-03-08 02:41:38,573 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 02:41:38,575 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 02:41:38,575 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 02:41:38,575 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 02:41:38,580 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:41:38" (1/1) ... [2025-03-08 02:41:38,588 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:41:38" (1/1) ... [2025-03-08 02:41:38,598 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 22 [2025-03-08 02:41:38,599 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 02:41:38,599 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 02:41:38,599 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 02:41:38,599 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 02:41:38,605 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:41:38" (1/1) ... [2025-03-08 02:41:38,606 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:41:38" (1/1) ... [2025-03-08 02:41:38,608 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:41:38" (1/1) ... [2025-03-08 02:41:38,615 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-08 02:41:38,616 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:41:38" (1/1) ... [2025-03-08 02:41:38,616 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:41:38" (1/1) ... [2025-03-08 02:41:38,622 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:41:38" (1/1) ... [2025-03-08 02:41:38,623 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:41:38" (1/1) ... [2025-03-08 02:41:38,623 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:41:38" (1/1) ... [2025-03-08 02:41:38,624 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:41:38" (1/1) ... [2025-03-08 02:41:38,625 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 02:41:38,626 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 02:41:38,626 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 02:41:38,626 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 02:41:38,627 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:41:38" (1/1) ... [2025-03-08 02:41:38,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 02:41:38,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 02:41:38,653 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) [2025-03-08 02:41:38,659 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 [2025-03-08 02:41:38,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 02:41:38,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-08 02:41:38,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 02:41:38,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 02:41:38,716 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 02:41:38,718 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 02:41:42,885 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2025-03-08 02:41:42,885 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 02:41:42,891 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 02:41:42,892 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 02:41:42,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 02:41:42 BoogieIcfgContainer [2025-03-08 02:41:42,892 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 02:41:42,895 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 02:41:42,895 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 02:41:42,898 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 02:41:42,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 02:41:38" (1/3) ... [2025-03-08 02:41:42,899 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c17f384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 02:41:42, skipping insertion in model container [2025-03-08 02:41:42,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:41:38" (2/3) ... [2025-03-08 02:41:42,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c17f384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 02:41:42, skipping insertion in model container [2025-03-08 02:41:42,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 02:41:42" (3/3) ... [2025-03-08 02:41:42,901 INFO L128 eAbstractionObserver]: Analyzing ICFG square_3.i [2025-03-08 02:41:42,911 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 02:41:42,913 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG square_3.i that has 1 procedures, 11 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-08 02:41:42,943 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 02:41:42,950 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;@169119c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 02:41:42,950 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 02:41:42,953 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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) [2025-03-08 02:41:42,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-08 02:41:42,957 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:41:42,957 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-08 02:41:42,958 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:41:42,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:41:42,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1211904766, now seen corresponding path program 1 times [2025-03-08 02:41:42,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-08 02:41:42,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1619212536] [2025-03-08 02:41:42,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:41:42,969 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-03-08 02:41:42,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-08 02:41:42,972 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) [2025-03-08 02:41:42,973 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 [2025-03-08 02:41:43,002 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-08 02:41:43,314 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-08 02:41:43,315 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:41:43,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:41:43,328 INFO L256 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 02:41:43,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 02:41:43,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 02:41:43,342 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 02:41:43,345 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-08 02:41:43,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1619212536] [2025-03-08 02:41:43,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1619212536] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:41:43,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:41:43,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 02:41:43,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676347356] [2025-03-08 02:41:43,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:41:43,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 02:41:43,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-08 02:41:43,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 02:41:43,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 02:41:43,367 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2025-03-08 02:41:43,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:41:43,375 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2025-03-08 02:41:43,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 02:41:43,376 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 [2025-03-08 02:41:43,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:41:43,380 INFO L225 Difference]: With dead ends: 19 [2025-03-08 02:41:43,380 INFO L226 Difference]: Without dead ends: 7 [2025-03-08 02:41:43,383 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 02:41:43,384 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 02:41:43,385 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 02:41:43,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2025-03-08 02:41:43,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2025-03-08 02:41:43,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 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) [2025-03-08 02:41:43,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2025-03-08 02:41:43,403 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2025-03-08 02:41:43,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:41:43,403 INFO L471 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2025-03-08 02:41:43,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2025-03-08 02:41:43,403 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2025-03-08 02:41:43,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-08 02:41:43,403 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:41:43,404 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-08 02:41:43,417 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 [2025-03-08 02:41:43,604 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 [2025-03-08 02:41:43,604 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:41:43,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:41:43,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1211934557, now seen corresponding path program 1 times [2025-03-08 02:41:43,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-08 02:41:43,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [40286749] [2025-03-08 02:41:43,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:41:43,606 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-03-08 02:41:43,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-08 02:41:43,608 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) [2025-03-08 02:41:43,610 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 [2025-03-08 02:41:43,627 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes.