./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cbmc-regression/float3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 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-cbmc-regression/float3.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 bfc84f7de0a9f57990dc33f292919523a52aa1e7a1c1eca24395d6b28aed01b7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 15:51:34,176 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 15:51:34,226 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 15:51:34,230 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 15:51:34,232 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 15:51:34,251 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 15:51:34,252 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 15:51:34,252 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 15:51:34,252 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 15:51:34,252 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 15:51:34,252 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 15:51:34,252 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 15:51:34,252 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 15:51:34,252 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 15:51:34,252 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 15:51:34,253 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 15:51:34,253 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 15:51:34,253 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 15:51:34,253 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 15:51:34,253 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 15:51:34,253 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 15:51:34,253 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 15:51:34,253 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 15:51:34,253 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 15:51:34,253 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 15:51:34,253 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 15:51:34,253 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 15:51:34,253 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 15:51:34,253 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 15:51:34,253 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 15:51:34,253 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 15:51:34,253 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 15:51:34,253 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 15:51:34,254 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 15:51:34,254 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 15:51:34,254 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 15:51:34,254 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 15:51:34,254 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 15:51:34,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 15:51:34,254 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 15:51:34,254 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 15:51:34,254 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 15:51:34,254 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 15:51:34,254 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 -> bfc84f7de0a9f57990dc33f292919523a52aa1e7a1c1eca24395d6b28aed01b7 [2025-03-16 15:51:34,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 15:51:34,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 15:51:34,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 15:51:34,467 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 15:51:34,467 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 15:51:34,469 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float3.c [2025-03-16 15:51:35,598 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a7afbfaa/90ecfefed3c14307ada2f1f4075dd125/FLAG186636ffb [2025-03-16 15:51:35,815 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 15:51:35,815 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float3.c [2025-03-16 15:51:35,821 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a7afbfaa/90ecfefed3c14307ada2f1f4075dd125/FLAG186636ffb [2025-03-16 15:51:35,835 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a7afbfaa/90ecfefed3c14307ada2f1f4075dd125 [2025-03-16 15:51:35,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 15:51:35,841 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 15:51:35,842 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 15:51:35,842 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 15:51:35,847 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 15:51:35,848 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 03:51:35" (1/1) ... [2025-03-16 15:51:35,849 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3823c754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:51:35, skipping insertion in model container [2025-03-16 15:51:35,849 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 03:51:35" (1/1) ... [2025-03-16 15:51:35,860 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 15:51:35,961 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-cbmc-regression/float3.c[465,478] [2025-03-16 15:51:35,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 15:51:35,969 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 15:51:35,979 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-cbmc-regression/float3.c[465,478] [2025-03-16 15:51:35,980 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 15:51:35,990 INFO L204 MainTranslator]: Completed translation [2025-03-16 15:51:35,991 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:51:35 WrapperNode [2025-03-16 15:51:35,992 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 15:51:35,992 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 15:51:35,992 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 15:51:35,992 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 15:51:35,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:51:35" (1/1) ... [2025-03-16 15:51:36,002 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:51:35" (1/1) ... [2025-03-16 15:51:36,014 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 24 [2025-03-16 15:51:36,014 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 15:51:36,015 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 15:51:36,015 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 15:51:36,015 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 15:51:36,020 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:51:35" (1/1) ... [2025-03-16 15:51:36,020 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:51:35" (1/1) ... [2025-03-16 15:51:36,021 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:51:35" (1/1) ... [2025-03-16 15:51:36,028 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]. [2025-03-16 15:51:36,029 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:51:35" (1/1) ... [2025-03-16 15:51:36,029 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:51:35" (1/1) ... [2025-03-16 15:51:36,031 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:51:35" (1/1) ... [2025-03-16 15:51:36,034 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:51:35" (1/1) ... [2025-03-16 15:51:36,035 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:51:35" (1/1) ... [2025-03-16 15:51:36,035 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:51:35" (1/1) ... [2025-03-16 15:51:36,036 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 15:51:36,036 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 15:51:36,036 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 15:51:36,036 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 15:51:36,037 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:51:35" (1/1) ... [2025-03-16 15:51:36,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 15:51:36,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:51:36,063 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) [2025-03-16 15:51:36,065 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 [2025-03-16 15:51:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 15:51:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 15:51:36,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 15:51:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 15:51:36,124 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 15:51:36,125 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 15:51:36,200 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2025-03-16 15:51:36,202 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 15:51:36,207 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 15:51:36,208 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 15:51:36,209 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 03:51:36 BoogieIcfgContainer [2025-03-16 15:51:36,209 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 15:51:36,211 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 15:51:36,212 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 15:51:36,215 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 15:51:36,216 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 03:51:35" (1/3) ... [2025-03-16 15:51:36,216 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f106776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 03:51:36, skipping insertion in model container [2025-03-16 15:51:36,216 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:51:35" (2/3) ... [2025-03-16 15:51:36,217 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f106776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 03:51:36, skipping insertion in model container [2025-03-16 15:51:36,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 03:51:36" (3/3) ... [2025-03-16 15:51:36,218 INFO L128 eAbstractionObserver]: Analyzing ICFG float3.c [2025-03-16 15:51:36,229 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 15:51:36,231 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG float3.c that has 1 procedures, 9 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-16 15:51:36,271 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 15:51:36,281 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;@4bfebef5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 15:51:36,282 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 15:51:36,286 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 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) [2025-03-16 15:51:36,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-16 15:51:36,290 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:51:36,291 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-16 15:51:36,291 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:51:36,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:51:36,296 INFO L85 PathProgramCache]: Analyzing trace with hash 36200965, now seen corresponding path program 1 times [2025-03-16 15:51:36,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:51:36,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581656035] [2025-03-16 15:51:36,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:51:36,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:51:36,355 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-16 15:51:36,368 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-16 15:51:36,369 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:51:36,369 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-16 15:51:36,370 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-16 15:51:36,375 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-16 15:51:36,377 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-16 15:51:36,380 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:51:36,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-16 15:51:36,391 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-16 15:51:36,393 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-16 15:51:36,393 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-16 15:51:36,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 15:51:36,398 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-16 15:51:36,410 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-16 15:51:36,413 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.03 03:51:36 BoogieIcfgContainer [2025-03-16 15:51:36,414 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-16 15:51:36,415 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-16 15:51:36,415 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-16 15:51:36,415 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-16 15:51:36,416 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 03:51:36" (3/4) ... [2025-03-16 15:51:36,418 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-16 15:51:36,418 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-16 15:51:36,419 INFO L158 Benchmark]: Toolchain (without parser) took 578.18ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 70.6MB in the end (delta: 34.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-16 15:51:36,420 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 126.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 15:51:36,420 INFO L158 Benchmark]: CACSL2BoogieTranslator took 149.95ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 94.5MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-16 15:51:36,421 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.96ms. Allocated memory is still 142.6MB. Free memory was 94.5MB in the beginning and 93.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 15:51:36,421 INFO L158 Benchmark]: Boogie Preprocessor took 20.84ms. Allocated memory is still 142.6MB. Free memory was 93.4MB in the beginning and 92.2MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-16 15:51:36,421 INFO L158 Benchmark]: IcfgBuilder took 172.90ms. Allocated memory is still 142.6MB. Free memory was 92.2MB in the beginning and 82.6MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-16 15:51:36,422 INFO L158 Benchmark]: TraceAbstraction took 202.28ms. Allocated memory is still 142.6MB. Free memory was 82.6MB in the beginning and 70.6MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-16 15:51:36,423 INFO L158 Benchmark]: Witness Printer took 3.78ms. Allocated memory is still 142.6MB. Free memory is still 70.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 15:51:36,424 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 126.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 149.95ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 94.5MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.96ms. Allocated memory is still 142.6MB. Free memory was 94.5MB in the beginning and 93.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.84ms. Allocated memory is still 142.6MB. Free memory was 93.4MB in the beginning and 92.2MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 172.90ms. Allocated memory is still 142.6MB. Free memory was 92.2MB in the beginning and 82.6MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 202.28ms. Allocated memory is still 142.6MB. Free memory was 82.6MB in the beginning and 70.6MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Witness Printer took 3.78ms. Allocated memory is still 142.6MB. Free memory is still 70.6MB. 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: 26]: 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 someBinaryArithmeticDOUBLEoperation at line 22, overapproximation of someBinaryDOUBLEComparisonOperation at line 26. Possible FailurePath: [L6] double d = 0.0; [L15] int x = 2; [L17] COND TRUE __VERIFIER_nondet_int() [L18] x = 4 VAL [d=0] [L20] CALL f1() [L10] d = 1.0 [L20] RET f1() [L22] d += (x == 2) [L24] d += (x > 3) [L26] COND TRUE !(d == 2.0) [L26] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 10 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, 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=9occurred 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, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-03-16 15:51:36,438 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-cbmc-regression/float3.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 bfc84f7de0a9f57990dc33f292919523a52aa1e7a1c1eca24395d6b28aed01b7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 15:51:38,248 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 15:51:38,339 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2025-03-16 15:51:38,360 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 15:51:38,361 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 15:51:38,382 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 15:51:38,383 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 15:51:38,383 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 15:51:38,383 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 15:51:38,383 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 15:51:38,383 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 15:51:38,383 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 15:51:38,384 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 15:51:38,384 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 15:51:38,384 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 15:51:38,384 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 15:51:38,384 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 15:51:38,384 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 15:51:38,384 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 15:51:38,384 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 15:51:38,384 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 15:51:38,384 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 15:51:38,384 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 15:51:38,384 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-16 15:51:38,384 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-16 15:51:38,384 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-16 15:51:38,384 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 15:51:38,384 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 15:51:38,384 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 15:51:38,385 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 15:51:38,385 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 15:51:38,385 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 15:51:38,385 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 15:51:38,385 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 15:51:38,385 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 15:51:38,385 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 15:51:38,385 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 15:51:38,385 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 15:51:38,385 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 15:51:38,385 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-16 15:51:38,385 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-16 15:51:38,385 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 15:51:38,385 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 15:51:38,385 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 15:51:38,386 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 15:51:38,386 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 -> bfc84f7de0a9f57990dc33f292919523a52aa1e7a1c1eca24395d6b28aed01b7 [2025-03-16 15:51:38,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 15:51:38,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 15:51:38,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 15:51:38,630 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 15:51:38,630 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 15:51:38,632 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float3.c [2025-03-16 15:51:39,775 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30b1e0af7/471d7e411b964423916dca43e58e87e2/FLAG957d5540f [2025-03-16 15:51:39,973 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 15:51:39,974 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float3.c [2025-03-16 15:51:39,979 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30b1e0af7/471d7e411b964423916dca43e58e87e2/FLAG957d5540f [2025-03-16 15:51:39,994 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30b1e0af7/471d7e411b964423916dca43e58e87e2 [2025-03-16 15:51:39,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 15:51:39,997 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 15:51:39,998 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 15:51:39,999 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 15:51:40,002 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 15:51:40,003 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 03:51:39" (1/1) ... [2025-03-16 15:51:40,003 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70055b4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:51:40, skipping insertion in model container [2025-03-16 15:51:40,003 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 03:51:39" (1/1) ... [2025-03-16 15:51:40,013 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 15:51:40,098 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-cbmc-regression/float3.c[465,478] [2025-03-16 15:51:40,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 15:51:40,108 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 15:51:40,116 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-cbmc-regression/float3.c[465,478] [2025-03-16 15:51:40,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 15:51:40,129 INFO L204 MainTranslator]: Completed translation [2025-03-16 15:51:40,130 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:51:40 WrapperNode [2025-03-16 15:51:40,131 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 15:51:40,131 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 15:51:40,131 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 15:51:40,132 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 15:51:40,136 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:51:40" (1/1) ... [2025-03-16 15:51:40,141 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:51:40" (1/1) ... [2025-03-16 15:51:40,152 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 24 [2025-03-16 15:51:40,154 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 15:51:40,154 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 15:51:40,154 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 15:51:40,154 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 15:51:40,159 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:51:40" (1/1) ... [2025-03-16 15:51:40,159 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:51:40" (1/1) ... [2025-03-16 15:51:40,161 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:51:40" (1/1) ... [2025-03-16 15:51:40,168 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]. [2025-03-16 15:51:40,169 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:51:40" (1/1) ... [2025-03-16 15:51:40,169 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:51:40" (1/1) ... [2025-03-16 15:51:40,174 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:51:40" (1/1) ... [2025-03-16 15:51:40,175 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:51:40" (1/1) ... [2025-03-16 15:51:40,176 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:51:40" (1/1) ... [2025-03-16 15:51:40,176 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:51:40" (1/1) ... [2025-03-16 15:51:40,177 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 15:51:40,178 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 15:51:40,178 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 15:51:40,178 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 15:51:40,179 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:51:40" (1/1) ... [2025-03-16 15:51:40,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 15:51:40,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:51:40,204 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) [2025-03-16 15:51:40,207 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 [2025-03-16 15:51:40,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 15:51:40,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-16 15:51:40,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 15:51:40,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 15:51:40,261 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 15:51:40,262 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 15:51:40,816 INFO L? ?]: Removed 3 outVars from TransFormulas that were not future-live. [2025-03-16 15:51:40,816 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 15:51:40,822 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 15:51:40,822 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 15:51:40,823 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 03:51:40 BoogieIcfgContainer [2025-03-16 15:51:40,823 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 15:51:40,824 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 15:51:40,824 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 15:51:40,827 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 15:51:40,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 03:51:39" (1/3) ... [2025-03-16 15:51:40,828 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c0d5a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 03:51:40, skipping insertion in model container [2025-03-16 15:51:40,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:51:40" (2/3) ... [2025-03-16 15:51:40,828 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c0d5a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 03:51:40, skipping insertion in model container [2025-03-16 15:51:40,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 03:51:40" (3/3) ... [2025-03-16 15:51:40,829 INFO L128 eAbstractionObserver]: Analyzing ICFG float3.c [2025-03-16 15:51:40,839 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 15:51:40,840 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG float3.c that has 1 procedures, 9 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-16 15:51:40,870 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 15:51:40,877 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;@3bd1fd28, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 15:51:40,877 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 15:51:40,880 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 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) [2025-03-16 15:51:40,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-16 15:51:40,883 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:51:40,883 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-16 15:51:40,884 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:51:40,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:51:40,887 INFO L85 PathProgramCache]: Analyzing trace with hash 36200965, now seen corresponding path program 1 times [2025-03-16 15:51:40,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-16 15:51:40,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2103019339] [2025-03-16 15:51:40,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:51:40,894 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 [2025-03-16 15:51:40,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-16 15:51:40,896 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) [2025-03-16 15:51:40,897 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 [2025-03-16 15:51:40,920 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-16 15:51:41,024 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-16 15:51:41,024 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:51:41,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:51:41,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 15:51:41,032 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 15:51:41,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:51:41,150 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 15:51:41,150 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-16 15:51:41,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2103019339] [2025-03-16 15:51:41,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2103019339] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:51:41,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:51:41,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 15:51:41,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655189701] [2025-03-16 15:51:41,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:51:41,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 15:51:41,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-16 15:51:41,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 15:51:41,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 15:51:41,172 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 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 5 states, 5 states have (on average 1.0) internal successors, (5), 4 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) [2025-03-16 15:51:41,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:51:41,817 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2025-03-16 15:51:41,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 15:51:41,819 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.0) internal successors, (5), 4 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 [2025-03-16 15:51:41,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:51:41,822 INFO L225 Difference]: With dead ends: 16 [2025-03-16 15:51:41,823 INFO L226 Difference]: Without dead ends: 6 [2025-03-16 15:51:41,824 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 15:51:41,826 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 15:51:41,826 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 12 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 15:51:41,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2025-03-16 15:51:41,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2025-03-16 15:51:41,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 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) [2025-03-16 15:51:41,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5 transitions. [2025-03-16 15:51:41,843 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 5 transitions. Word has length 5 [2025-03-16 15:51:41,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:51:41,843 INFO L471 AbstractCegarLoop]: Abstraction has 6 states and 5 transitions. [2025-03-16 15:51:41,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.0) internal successors, (5), 4 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) [2025-03-16 15:51:41,843 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2025-03-16 15:51:41,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-16 15:51:41,843 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:51:41,843 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-16 15:51:41,850 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 [2025-03-16 15:51:42,044 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 [2025-03-16 15:51:42,044 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:51:42,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:51:42,045 INFO L85 PathProgramCache]: Analyzing trace with hash 36230756, now seen corresponding path program 1 times [2025-03-16 15:51:42,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-16 15:51:42,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573703902] [2025-03-16 15:51:42,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:51:42,046 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 [2025-03-16 15:51:42,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-16 15:51:42,047 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) [2025-03-16 15:51:42,048 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 [2025-03-16 15:51:42,059 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-16 15:51:42,165 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-16 15:51:42,165 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:51:42,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:51:42,170 INFO L256 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 15:51:42,171 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 15:51:42,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:51:42,241 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 15:51:42,241 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-16 15:51:42,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1573703902] [2025-03-16 15:51:42,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1573703902] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:51:42,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:51:42,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:51:42,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128152650] [2025-03-16 15:51:42,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:51:42,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 15:51:42,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-16 15:51:42,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 15:51:42,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 15:51:42,243 INFO L87 Difference]: Start difference. First operand 6 states and 5 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 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) [2025-03-16 15:51:42,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:51:42,714 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2025-03-16 15:51:42,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 15:51:42,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 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 [2025-03-16 15:51:42,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:51:42,728 INFO L225 Difference]: With dead ends: 6 [2025-03-16 15:51:42,728 INFO L226 Difference]: Without dead ends: 0 [2025-03-16 15:51:42,728 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 15:51:42,729 INFO L435 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 15:51:42,729 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 15:51:42,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-03-16 15:51:42,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-03-16 15:51:42,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2025-03-16 15:51:42,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-03-16 15:51:42,730 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2025-03-16 15:51:42,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:51:42,730 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-16 15:51:42,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 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) [2025-03-16 15:51:42,730 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-03-16 15:51:42,730 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-03-16 15:51:42,732 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-16 15:51:42,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2025-03-16 15:51:42,932 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 [2025-03-16 15:51:42,935 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-16 15:51:42,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-03-16 15:51:42,940 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-16 15:51:42,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.03 03:51:42 BoogieIcfgContainer [2025-03-16 15:51:42,943 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-16 15:51:42,944 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-16 15:51:42,944 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-16 15:51:42,944 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-16 15:51:42,944 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 03:51:40" (3/4) ... [2025-03-16 15:51:42,945 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-16 15:51:42,950 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2025-03-16 15:51:42,950 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-03-16 15:51:42,950 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-16 15:51:42,950 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-16 15:51:42,998 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-16 15:51:42,998 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-16 15:51:42,999 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-16 15:51:43,001 INFO L158 Benchmark]: Toolchain (without parser) took 3004.35ms. Allocated memory is still 117.4MB. Free memory was 93.3MB in the beginning and 40.1MB in the end (delta: 53.2MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2025-03-16 15:51:43,003 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 83.9MB. Free memory is still 63.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 15:51:43,003 INFO L158 Benchmark]: CACSL2BoogieTranslator took 132.71ms. Allocated memory is still 117.4MB. Free memory was 93.1MB in the beginning and 82.0MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-16 15:51:43,003 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.35ms. Allocated memory is still 117.4MB. Free memory was 82.0MB in the beginning and 80.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 15:51:43,003 INFO L158 Benchmark]: Boogie Preprocessor took 23.12ms. Allocated memory is still 117.4MB. Free memory was 80.9MB in the beginning and 79.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 15:51:43,003 INFO L158 Benchmark]: IcfgBuilder took 644.53ms. Allocated memory is still 117.4MB. Free memory was 79.8MB in the beginning and 70.3MB in the end (delta: 9.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-16 15:51:43,003 INFO L158 Benchmark]: TraceAbstraction took 2118.98ms. Allocated memory is still 117.4MB. Free memory was 69.6MB in the beginning and 45.3MB in the end (delta: 24.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-16 15:51:43,004 INFO L158 Benchmark]: Witness Printer took 57.03ms. Allocated memory is still 117.4MB. Free memory was 45.3MB in the beginning and 40.1MB in the end (delta: 5.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 15:51:43,005 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 83.9MB. Free memory is still 63.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 132.71ms. Allocated memory is still 117.4MB. Free memory was 93.1MB in the beginning and 82.0MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.35ms. Allocated memory is still 117.4MB. Free memory was 82.0MB in the beginning and 80.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.12ms. Allocated memory is still 117.4MB. Free memory was 80.9MB in the beginning and 79.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 644.53ms. Allocated memory is still 117.4MB. Free memory was 79.8MB in the beginning and 70.3MB in the end (delta: 9.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2118.98ms. Allocated memory is still 117.4MB. Free memory was 69.6MB in the beginning and 45.3MB in the end (delta: 24.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 57.03ms. Allocated memory is still 117.4MB. Free memory was 45.3MB in the beginning and 40.1MB in the end (delta: 5.2MB). 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 - PositiveResult [Line: 26]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 10 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14 IncrementalHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 8 mSDtfsCounter, 14 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 9, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 SizeOfPredicates, 4 NumberOfNonLiveVariables, 39 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-16 15:51:43,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE