./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/neural-networks/erf_5_safe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/neural-networks/erf_5_safe.c-amalgamation.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 a61b450591d297bb54a7e2b017ddcc535583283602376cf67569cff0251cefee --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 01:51:10,166 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 01:51:10,212 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 01:51:10,215 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 01:51:10,216 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 01:51:10,245 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 01:51:10,246 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 01:51:10,246 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 01:51:10,246 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 01:51:10,246 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 01:51:10,247 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 01:51:10,247 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 01:51:10,247 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 01:51:10,247 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 01:51:10,248 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 01:51:10,248 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 01:51:10,248 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 01:51:10,248 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 01:51:10,248 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 01:51:10,248 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 01:51:10,248 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 01:51:10,248 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 01:51:10,248 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 01:51:10,248 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 01:51:10,248 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 01:51:10,248 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 01:51:10,248 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 01:51:10,248 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 01:51:10,249 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 01:51:10,249 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 01:51:10,249 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 01:51:10,249 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 01:51:10,249 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 01:51:10,249 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 01:51:10,249 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 01:51:10,249 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 01:51:10,249 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 01:51:10,249 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 01:51:10,249 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 01:51:10,249 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 01:51:10,249 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 01:51:10,249 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 01:51:10,249 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 01:51:10,249 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 01:51:10,249 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 01:51:10,249 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 01:51:10,249 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 01:51:10,250 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 01:51:10,250 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-jdk21/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 -> a61b450591d297bb54a7e2b017ddcc535583283602376cf67569cff0251cefee [2025-01-09 01:51:10,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 01:51:10,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 01:51:10,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 01:51:10,457 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 01:51:10,457 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 01:51:10,458 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/neural-networks/erf_5_safe.c-amalgamation.i [2025-01-09 01:51:11,598 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fc7358e62/082fb46d66b5421ebc0451705c08bf4e/FLAGd98a26f6d [2025-01-09 01:51:11,889 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 01:51:11,890 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/neural-networks/erf_5_safe.c-amalgamation.i [2025-01-09 01:51:11,901 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fc7358e62/082fb46d66b5421ebc0451705c08bf4e/FLAGd98a26f6d [2025-01-09 01:51:12,178 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fc7358e62/082fb46d66b5421ebc0451705c08bf4e [2025-01-09 01:51:12,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 01:51:12,181 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 01:51:12,182 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 01:51:12,182 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 01:51:12,185 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 01:51:12,185 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 01:51:12" (1/1) ... [2025-01-09 01:51:12,186 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77776cf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:51:12, skipping insertion in model container [2025-01-09 01:51:12,186 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 01:51:12" (1/1) ... [2025-01-09 01:51:12,209 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 01:51:12,613 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/neural-networks/erf_5_safe.c-amalgamation.i[63006,63019] [2025-01-09 01:51:12,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 01:51:12,622 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 01:51:12,650 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/neural-networks/erf_5_safe.c-amalgamation.i[63006,63019] [2025-01-09 01:51:12,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 01:51:12,724 INFO L204 MainTranslator]: Completed translation [2025-01-09 01:51:12,724 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:51:12 WrapperNode [2025-01-09 01:51:12,725 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 01:51:12,725 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 01:51:12,725 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 01:51:12,725 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 01:51:12,730 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:51:12" (1/1) ... [2025-01-09 01:51:12,741 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:51:12" (1/1) ... [2025-01-09 01:51:12,754 INFO L138 Inliner]: procedures = 557, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 28 [2025-01-09 01:51:12,755 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 01:51:12,755 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 01:51:12,755 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 01:51:12,755 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 01:51:12,760 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:51:12" (1/1) ... [2025-01-09 01:51:12,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:51:12" (1/1) ... [2025-01-09 01:51:12,761 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:51:12" (1/1) ... [2025-01-09 01:51:12,767 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7]. The 0 writes are split as follows [0, 0]. [2025-01-09 01:51:12,768 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:51:12" (1/1) ... [2025-01-09 01:51:12,768 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:51:12" (1/1) ... [2025-01-09 01:51:12,770 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:51:12" (1/1) ... [2025-01-09 01:51:12,771 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:51:12" (1/1) ... [2025-01-09 01:51:12,772 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:51:12" (1/1) ... [2025-01-09 01:51:12,772 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:51:12" (1/1) ... [2025-01-09 01:51:12,773 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:51:12" (1/1) ... [2025-01-09 01:51:12,774 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 01:51:12,774 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 01:51:12,774 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 01:51:12,774 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 01:51:12,775 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:51:12" (1/1) ... [2025-01-09 01:51:12,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 01:51:12,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 01:51:12,797 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 01:51:12,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 01:51:12,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 01:51:12,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 01:51:12,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 01:51:12,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 01:51:12,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-09 01:51:12,891 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 01:51:12,892 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 01:51:12,924 INFO L? ?]: Removed 3 outVars from TransFormulas that were not future-live. [2025-01-09 01:51:12,925 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 01:51:12,931 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 01:51:12,931 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 01:51:12,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 01:51:12 BoogieIcfgContainer [2025-01-09 01:51:12,931 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 01:51:12,933 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 01:51:12,933 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 01:51:12,936 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 01:51:12,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 01:51:12" (1/3) ... [2025-01-09 01:51:12,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c12a49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 01:51:12, skipping insertion in model container [2025-01-09 01:51:12,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:51:12" (2/3) ... [2025-01-09 01:51:12,937 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c12a49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 01:51:12, skipping insertion in model container [2025-01-09 01:51:12,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 01:51:12" (3/3) ... [2025-01-09 01:51:12,938 INFO L128 eAbstractionObserver]: Analyzing ICFG erf_5_safe.c-amalgamation.i [2025-01-09 01:51:12,947 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 01:51:12,949 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG erf_5_safe.c-amalgamation.i that has 1 procedures, 11 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-01-09 01:51:12,979 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 01:51:12,986 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;@194c6ad3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 01:51:12,987 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 01:51:12,989 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) [2025-01-09 01:51:12,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-01-09 01:51:12,992 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 01:51:12,993 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-01-09 01:51:12,993 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 01:51:12,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 01:51:12,996 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2025-01-09 01:51:13,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 01:51:13,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872143612] [2025-01-09 01:51:13,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 01:51:13,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 01:51:13,060 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-09 01:51:13,065 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-09 01:51:13,065 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 01:51:13,065 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 01:51:13,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 01:51:13,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 01:51:13,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872143612] [2025-01-09 01:51:13,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872143612] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 01:51:13,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 01:51:13,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 01:51:13,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358760212] [2025-01-09 01:51:13,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 01:51:13,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 01:51:13,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 01:51:13,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 01:51:13,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 01:51:13,117 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) [2025-01-09 01:51:13,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 01:51:13,124 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2025-01-09 01:51:13,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 01:51:13,125 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 [2025-01-09 01:51:13,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 01:51:13,129 INFO L225 Difference]: With dead ends: 19 [2025-01-09 01:51:13,129 INFO L226 Difference]: Without dead ends: 7 [2025-01-09 01:51:13,131 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 [2025-01-09 01:51:13,133 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 [2025-01-09 01:51:13,133 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] [2025-01-09 01:51:13,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2025-01-09 01:51:13,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2025-01-09 01:51:13,148 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) [2025-01-09 01:51:13,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2025-01-09 01:51:13,151 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2025-01-09 01:51:13,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 01:51:13,151 INFO L471 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2025-01-09 01:51:13,151 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) [2025-01-09 01:51:13,151 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2025-01-09 01:51:13,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-01-09 01:51:13,151 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 01:51:13,152 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-01-09 01:51:13,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 01:51:13,152 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 01:51:13,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 01:51:13,152 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2025-01-09 01:51:13,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 01:51:13,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947395267] [2025-01-09 01:51:13,152 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 01:51:13,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 01:51:13,158 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-09 01:51:13,161 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-09 01:51:13,161 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 01:51:13,161 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 01:51:13,162 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-09 01:51:13,163 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-09 01:51:13,166 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-09 01:51:13,166 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 01:51:13,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 01:51:13,177 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-09 01:51:13,177 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-09 01:51:13,178 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-01-09 01:51:13,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 01:51:13,181 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-01-09 01:51:13,189 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-09 01:51:13,191 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 01:51:13 BoogieIcfgContainer [2025-01-09 01:51:13,191 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-09 01:51:13,192 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-09 01:51:13,192 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-09 01:51:13,192 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-09 01:51:13,192 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 01:51:12" (3/4) ... [2025-01-09 01:51:13,194 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-01-09 01:51:13,195 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-09 01:51:13,195 INFO L158 Benchmark]: Toolchain (without parser) took 1014.06ms. Allocated memory is still 201.3MB. Free memory was 157.0MB in the beginning and 71.1MB in the end (delta: 85.8MB). Peak memory consumption was 83.9MB. Max. memory is 16.1GB. [2025-01-09 01:51:13,195 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 218.1MB. Free memory is still 132.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 01:51:13,196 INFO L158 Benchmark]: CACSL2BoogieTranslator took 542.92ms. Allocated memory is still 201.3MB. Free memory was 156.7MB in the beginning and 103.3MB in the end (delta: 53.4MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2025-01-09 01:51:13,196 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.29ms. Allocated memory is still 201.3MB. Free memory was 103.3MB in the beginning and 101.1MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 01:51:13,196 INFO L158 Benchmark]: Boogie Preprocessor took 18.77ms. Allocated memory is still 201.3MB. Free memory was 101.1MB in the beginning and 99.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 01:51:13,196 INFO L158 Benchmark]: RCFGBuilder took 157.30ms. Allocated memory is still 201.3MB. Free memory was 99.7MB in the beginning and 90.0MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 01:51:13,196 INFO L158 Benchmark]: TraceAbstraction took 258.50ms. Allocated memory is still 201.3MB. Free memory was 89.7MB in the beginning and 71.4MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-09 01:51:13,197 INFO L158 Benchmark]: Witness Printer took 3.04ms. Allocated memory is still 201.3MB. Free memory was 71.4MB in the beginning and 71.1MB in the end (delta: 310.2kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 01:51:13,198 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 218.1MB. Free memory is still 132.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 542.92ms. Allocated memory is still 201.3MB. Free memory was 156.7MB in the beginning and 103.3MB in the end (delta: 53.4MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.29ms. Allocated memory is still 201.3MB. Free memory was 103.3MB in the beginning and 101.1MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.77ms. Allocated memory is still 201.3MB. Free memory was 101.1MB in the beginning and 99.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 157.30ms. Allocated memory is still 201.3MB. Free memory was 99.7MB in the beginning and 90.0MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 258.50ms. Allocated memory is still 201.3MB. Free memory was 89.7MB in the beginning and 71.4MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 3.04ms. Allocated memory is still 201.3MB. Free memory was 71.4MB in the beginning and 71.1MB in the end (delta: 310.2kB). 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: 851]: 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 851, overapproximation of someBinaryFLOATComparisonOperation at line 848, overapproximation of someUnaryFLOAToperation at line 850. Possible FailurePath: [L847] float x = __VERIFIER_nondet_float(); [L848] COND FALSE !(!(__builtin_isgreaterequal(x, 0.0f))) [L849] float y = erff(x); [L850] float z = -erff(-x); [L851] COND TRUE !(y == z) [L851] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 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 [2025-01-09 01:51:13,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/neural-networks/erf_5_safe.c-amalgamation.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 a61b450591d297bb54a7e2b017ddcc535583283602376cf67569cff0251cefee --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 01:51:15,156 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 01:51:15,270 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2025-01-09 01:51:15,274 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 01:51:15,275 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 01:51:15,290 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 01:51:15,290 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 01:51:15,290 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 01:51:15,290 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 01:51:15,291 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 01:51:15,291 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 01:51:15,291 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 01:51:15,291 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 01:51:15,291 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 01:51:15,292 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 01:51:15,292 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 01:51:15,292 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 01:51:15,292 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 01:51:15,292 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 01:51:15,292 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 01:51:15,292 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 01:51:15,292 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 01:51:15,292 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 01:51:15,292 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-09 01:51:15,293 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-01-09 01:51:15,293 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-01-09 01:51:15,293 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 01:51:15,293 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 01:51:15,294 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 01:51:15,294 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 01:51:15,294 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 01:51:15,294 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 01:51:15,294 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 01:51:15,294 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 01:51:15,294 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 01:51:15,294 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 01:51:15,294 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 01:51:15,294 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 01:51:15,294 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 01:51:15,294 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 01:51:15,294 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 01:51:15,294 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 01:51:15,294 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 01:51:15,294 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 01:51:15,294 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-01-09 01:51:15,294 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-01-09 01:51:15,294 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 01:51:15,294 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 01:51:15,294 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 01:51:15,294 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 01:51:15,294 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-jdk21/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 -> a61b450591d297bb54a7e2b017ddcc535583283602376cf67569cff0251cefee [2025-01-09 01:51:15,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 01:51:15,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 01:51:15,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 01:51:15,554 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 01:51:15,554 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 01:51:15,555 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/neural-networks/erf_5_safe.c-amalgamation.i [2025-01-09 01:51:16,734 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b0ba18ef6/ae0b5c5091b94263b319ef7dc6bfcb5d/FLAGe16cd09a3 [2025-01-09 01:51:17,018 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 01:51:17,018 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/neural-networks/erf_5_safe.c-amalgamation.i [2025-01-09 01:51:17,043 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b0ba18ef6/ae0b5c5091b94263b319ef7dc6bfcb5d/FLAGe16cd09a3 [2025-01-09 01:51:17,058 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b0ba18ef6/ae0b5c5091b94263b319ef7dc6bfcb5d [2025-01-09 01:51:17,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 01:51:17,062 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 01:51:17,064 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 01:51:17,064 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 01:51:17,068 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 01:51:17,068 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 01:51:17" (1/1) ... [2025-01-09 01:51:17,069 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21c431f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:51:17, skipping insertion in model container [2025-01-09 01:51:17,069 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 01:51:17" (1/1) ... [2025-01-09 01:51:17,101 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 01:51:17,470 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/neural-networks/erf_5_safe.c-amalgamation.i[63006,63019] [2025-01-09 01:51:17,472 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 01:51:17,484 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 01:51:17,520 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/neural-networks/erf_5_safe.c-amalgamation.i[63006,63019] [2025-01-09 01:51:17,521 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 01:51:17,675 INFO L204 MainTranslator]: Completed translation [2025-01-09 01:51:17,680 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:51:17 WrapperNode [2025-01-09 01:51:17,680 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 01:51:17,681 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 01:51:17,681 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 01:51:17,681 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 01:51:17,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:51:17" (1/1) ... [2025-01-09 01:51:17,716 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:51:17" (1/1) ... [2025-01-09 01:51:17,733 INFO L138 Inliner]: procedures = 558, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2025-01-09 01:51:17,734 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 01:51:17,735 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 01:51:17,735 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 01:51:17,735 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 01:51:17,739 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:51:17" (1/1) ... [2025-01-09 01:51:17,739 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:51:17" (1/1) ... [2025-01-09 01:51:17,742 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:51:17" (1/1) ... [2025-01-09 01:51:17,750 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7]. The 0 writes are split as follows [0, 0]. [2025-01-09 01:51:17,751 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:51:17" (1/1) ... [2025-01-09 01:51:17,751 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:51:17" (1/1) ... [2025-01-09 01:51:17,757 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:51:17" (1/1) ... [2025-01-09 01:51:17,757 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:51:17" (1/1) ... [2025-01-09 01:51:17,758 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:51:17" (1/1) ... [2025-01-09 01:51:17,759 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:51:17" (1/1) ... [2025-01-09 01:51:17,760 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:51:17" (1/1) ... [2025-01-09 01:51:17,761 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 01:51:17,761 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 01:51:17,761 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 01:51:17,761 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 01:51:17,762 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:51:17" (1/1) ... [2025-01-09 01:51:17,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 01:51:17,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 01:51:17,783 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 01:51:17,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 01:51:17,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-01-09 01:51:17,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-01-09 01:51:17,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 01:51:17,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 01:51:17,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 01:51:17,872 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 01:51:17,874 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 01:51:17,934 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2025-01-09 01:51:17,934 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 01:51:17,942 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 01:51:17,943 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 01:51:17,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 01:51:17 BoogieIcfgContainer [2025-01-09 01:51:17,944 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 01:51:17,945 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 01:51:17,946 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 01:51:17,950 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 01:51:17,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 01:51:17" (1/3) ... [2025-01-09 01:51:17,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29426529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 01:51:17, skipping insertion in model container [2025-01-09 01:51:17,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 01:51:17" (2/3) ... [2025-01-09 01:51:17,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29426529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 01:51:17, skipping insertion in model container [2025-01-09 01:51:17,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 01:51:17" (3/3) ... [2025-01-09 01:51:17,953 INFO L128 eAbstractionObserver]: Analyzing ICFG erf_5_safe.c-amalgamation.i [2025-01-09 01:51:17,964 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 01:51:17,965 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG erf_5_safe.c-amalgamation.i that has 1 procedures, 11 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-01-09 01:51:18,000 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 01:51:18,010 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;@60a287fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 01:51:18,010 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 01:51:18,013 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) [2025-01-09 01:51:18,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-01-09 01:51:18,016 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 01:51:18,017 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-01-09 01:51:18,017 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 01:51:18,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 01:51:18,021 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2025-01-09 01:51:18,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 01:51:18,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2083511995] [2025-01-09 01:51:18,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 01:51:18,029 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 [2025-01-09 01:51:18,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2025-01-09 01:51:18,031 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/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) [2025-01-09 01:51:18,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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 [2025-01-09 01:51:18,065 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-09 01:51:18,073 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-09 01:51:18,074 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 01:51:18,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 01:51:18,075 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 01:51:18,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 01:51:18,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 01:51:18,092 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 01:51:18,092 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 01:51:18,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2083511995] [2025-01-09 01:51:18,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2083511995] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 01:51:18,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 01:51:18,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 01:51:18,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831464760] [2025-01-09 01:51:18,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 01:51:18,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 01:51:18,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 01:51:18,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 01:51:18,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 01:51:18,109 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) [2025-01-09 01:51:18,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 01:51:18,115 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2025-01-09 01:51:18,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 01:51:18,116 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 [2025-01-09 01:51:18,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 01:51:18,119 INFO L225 Difference]: With dead ends: 19 [2025-01-09 01:51:18,119 INFO L226 Difference]: Without dead ends: 7 [2025-01-09 01:51:18,121 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 [2025-01-09 01:51:18,122 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 [2025-01-09 01:51:18,123 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] [2025-01-09 01:51:18,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2025-01-09 01:51:18,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2025-01-09 01:51:18,136 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) [2025-01-09 01:51:18,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2025-01-09 01:51:18,138 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2025-01-09 01:51:18,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 01:51:18,138 INFO L471 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2025-01-09 01:51:18,138 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) [2025-01-09 01:51:18,138 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2025-01-09 01:51:18,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-01-09 01:51:18,138 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 01:51:18,138 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-01-09 01:51:18,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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 [2025-01-09 01:51:18,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/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 [2025-01-09 01:51:18,340 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 01:51:18,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 01:51:18,340 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2025-01-09 01:51:18,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 01:51:18,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [276216356] [2025-01-09 01:51:18,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 01:51:18,341 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 [2025-01-09 01:51:18,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2025-01-09 01:51:18,345 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/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) [2025-01-09 01:51:18,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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 [2025-01-09 01:51:18,376 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-09 01:51:18,385 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-09 01:51:18,386 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 01:51:18,386 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 01:51:18,386 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-09 01:51:18,389 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-09 01:51:18,392 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-09 01:51:18,393 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 01:51:18,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 01:51:18,404 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-01-09 01:51:18,405 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-09 01:51:18,406 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-01-09 01:51:18,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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 [2025-01-09 01:51:18,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/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 [2025-01-09 01:51:18,612 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-01-09 01:51:18,620 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-09 01:51:18,622 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 01:51:18 BoogieIcfgContainer [2025-01-09 01:51:18,622 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-09 01:51:18,623 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-09 01:51:18,623 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-09 01:51:18,623 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-09 01:51:18,623 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 01:51:17" (3/4) ... [2025-01-09 01:51:18,625 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-01-09 01:51:18,625 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-09 01:51:18,626 INFO L158 Benchmark]: Toolchain (without parser) took 1563.88ms. Allocated memory is still 117.4MB. Free memory was 90.1MB in the beginning and 50.3MB in the end (delta: 39.8MB). Peak memory consumption was 39.6MB. Max. memory is 16.1GB. [2025-01-09 01:51:18,626 INFO L158 Benchmark]: CDTParser took 2.18ms. Allocated memory is still 83.9MB. Free memory is still 61.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 01:51:18,626 INFO L158 Benchmark]: CACSL2BoogieTranslator took 616.11ms. Allocated memory is still 117.4MB. Free memory was 90.1MB in the beginning and 81.8MB in the end (delta: 8.2MB). Peak memory consumption was 56.4MB. Max. memory is 16.1GB. [2025-01-09 01:51:18,627 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.93ms. Allocated memory is still 117.4MB. Free memory was 81.8MB in the beginning and 79.8MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 01:51:18,627 INFO L158 Benchmark]: Boogie Preprocessor took 26.13ms. Allocated memory is still 117.4MB. Free memory was 79.8MB in the beginning and 78.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 01:51:18,627 INFO L158 Benchmark]: RCFGBuilder took 182.94ms. Allocated memory is still 117.4MB. Free memory was 78.3MB in the beginning and 68.9MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 01:51:18,628 INFO L158 Benchmark]: TraceAbstraction took 676.78ms. Allocated memory is still 117.4MB. Free memory was 68.1MB in the beginning and 50.3MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-09 01:51:18,628 INFO L158 Benchmark]: Witness Printer took 2.85ms. Allocated memory is still 117.4MB. Free memory is still 50.3MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 01:51:18,630 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.18ms. Allocated memory is still 83.9MB. Free memory is still 61.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 616.11ms. Allocated memory is still 117.4MB. Free memory was 90.1MB in the beginning and 81.8MB in the end (delta: 8.2MB). Peak memory consumption was 56.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.93ms. Allocated memory is still 117.4MB. Free memory was 81.8MB in the beginning and 79.8MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.13ms. Allocated memory is still 117.4MB. Free memory was 79.8MB in the beginning and 78.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 182.94ms. Allocated memory is still 117.4MB. Free memory was 78.3MB in the beginning and 68.9MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 676.78ms. Allocated memory is still 117.4MB. Free memory was 68.1MB in the beginning and 50.3MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 2.85ms. Allocated memory is still 117.4MB. Free memory is still 50.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 851]: 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 erff at line 849. Possible FailurePath: [L847] float x = __VERIFIER_nondet_float(); [L848] COND FALSE !(!(__builtin_isgreaterequal(x, 0.0f))) [L849] float y = erff(x); [L850] float z = -erff(-x); [L851] COND TRUE !(y == z) [L851] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, 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, 5 GetRequests, 5 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, 24 ConjunctsInSsa, 1 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 [2025-01-09 01:51:18,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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 Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample