./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/filter2.c --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/float-benchs/filter2.c -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 e42e84729022b725ebcfce66d0ece68757a1a9b385230356b4d45a24fc6b4ef2 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 00:51:44,752 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 00:51:44,807 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 00:51:44,810 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 00:51:44,812 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 00:51:44,833 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 00:51:44,834 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 00:51:44,834 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 00:51:44,834 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 00:51:44,835 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 00:51:44,835 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 00:51:44,835 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 00:51:44,836 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 00:51:44,836 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 00:51:44,836 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 00:51:44,836 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 00:51:44,836 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 00:51:44,837 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 00:51:44,837 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 00:51:44,837 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 00:51:44,837 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 00:51:44,837 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 00:51:44,837 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 00:51:44,837 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 00:51:44,837 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 00:51:44,837 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 00:51:44,837 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 00:51:44,837 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 00:51:44,837 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 00:51:44,837 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 00:51:44,838 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 00:51:44,838 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 00:51:44,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 00:51:44,838 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 00:51:44,838 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 00:51:44,838 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 00:51:44,838 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 00:51:44,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 00:51:44,839 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 00:51:44,839 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 00:51:44,839 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 00:51:44,839 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 00:51:44,839 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 00:51:44,839 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 00:51:44,839 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 00:51:44,839 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 00:51:44,839 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 00:51:44,839 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 00:51:44,839 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 -> e42e84729022b725ebcfce66d0ece68757a1a9b385230356b4d45a24fc6b4ef2 [2025-01-09 00:51:45,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 00:51:45,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 00:51:45,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 00:51:45,077 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 00:51:45,077 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 00:51:45,078 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/filter2.c [2025-01-09 00:51:46,255 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1f0da659b/8229292670aa454495273075b34f4a3c/FLAG9accd36a6 [2025-01-09 00:51:46,501 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 00:51:46,502 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/float-benchs/filter2.c [2025-01-09 00:51:46,507 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1f0da659b/8229292670aa454495273075b34f4a3c/FLAG9accd36a6 [2025-01-09 00:51:46,516 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1f0da659b/8229292670aa454495273075b34f4a3c [2025-01-09 00:51:46,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 00:51:46,518 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 00:51:46,519 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 00:51:46,519 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 00:51:46,523 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 00:51:46,523 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 12:51:46" (1/1) ... [2025-01-09 00:51:46,524 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62b9ba58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:51:46, skipping insertion in model container [2025-01-09 00:51:46,524 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 12:51:46" (1/1) ... [2025-01-09 00:51:46,535 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 00:51:46,639 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/float-benchs/filter2.c[652,665] [2025-01-09 00:51:46,652 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 00:51:46,660 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 00:51:46,668 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/float-benchs/filter2.c[652,665] [2025-01-09 00:51:46,671 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 00:51:46,682 INFO L204 MainTranslator]: Completed translation [2025-01-09 00:51:46,683 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:51:46 WrapperNode [2025-01-09 00:51:46,684 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 00:51:46,684 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 00:51:46,684 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 00:51:46,685 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 00:51:46,690 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:51:46" (1/1) ... [2025-01-09 00:51:46,694 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:51:46" (1/1) ... [2025-01-09 00:51:46,706 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49 [2025-01-09 00:51:46,707 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 00:51:46,708 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 00:51:46,708 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 00:51:46,708 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 00:51:46,714 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:51:46" (1/1) ... [2025-01-09 00:51:46,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:51:46" (1/1) ... [2025-01-09 00:51:46,715 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:51:46" (1/1) ... [2025-01-09 00:51:46,725 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]. [2025-01-09 00:51:46,726 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:51:46" (1/1) ... [2025-01-09 00:51:46,726 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:51:46" (1/1) ... [2025-01-09 00:51:46,728 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:51:46" (1/1) ... [2025-01-09 00:51:46,728 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:51:46" (1/1) ... [2025-01-09 00:51:46,733 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:51:46" (1/1) ... [2025-01-09 00:51:46,734 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:51:46" (1/1) ... [2025-01-09 00:51:46,737 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:51:46" (1/1) ... [2025-01-09 00:51:46,737 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 00:51:46,738 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 00:51:46,738 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 00:51:46,738 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 00:51:46,739 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:51:46" (1/1) ... [2025-01-09 00:51:46,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 00:51:46,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 00:51:46,762 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 00:51:46,767 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 00:51:46,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 00:51:46,782 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 00:51:46,782 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 00:51:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 00:51:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 00:51:46,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 00:51:46,826 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 00:51:46,827 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 00:51:46,886 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2025-01-09 00:51:46,886 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 00:51:46,892 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 00:51:46,892 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 00:51:46,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 12:51:46 BoogieIcfgContainer [2025-01-09 00:51:46,892 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 00:51:46,894 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 00:51:46,894 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 00:51:46,896 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 00:51:46,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 12:51:46" (1/3) ... [2025-01-09 00:51:46,897 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4aed55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 12:51:46, skipping insertion in model container [2025-01-09 00:51:46,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:51:46" (2/3) ... [2025-01-09 00:51:46,897 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4aed55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 12:51:46, skipping insertion in model container [2025-01-09 00:51:46,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 12:51:46" (3/3) ... [2025-01-09 00:51:46,898 INFO L128 eAbstractionObserver]: Analyzing ICFG filter2.c [2025-01-09 00:51:46,907 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 00:51:46,909 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG filter2.c that has 2 procedures, 19 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 00:51:46,945 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 00:51:46,954 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4330652a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 00:51:46,954 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 00:51:46,957 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-09 00:51:46,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-01-09 00:51:46,963 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 00:51:46,963 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 00:51:46,963 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 00:51:46,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 00:51:46,967 INFO L85 PathProgramCache]: Analyzing trace with hash 759298341, now seen corresponding path program 1 times [2025-01-09 00:51:46,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 00:51:46,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114413585] [2025-01-09 00:51:46,973 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 00:51:46,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 00:51:47,018 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-09 00:51:47,042 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 00:51:47,042 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 00:51:47,042 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 00:51:47,042 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-09 00:51:47,048 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-09 00:51:47,060 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 00:51:47,060 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 00:51:47,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 00:51:47,079 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-09 00:51:47,080 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-09 00:51:47,081 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-01-09 00:51:47,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 00:51:47,087 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-01-09 00:51:47,103 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-09 00:51:47,106 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 12:51:47 BoogieIcfgContainer [2025-01-09 00:51:47,107 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-09 00:51:47,108 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-09 00:51:47,108 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-09 00:51:47,108 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-09 00:51:47,109 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 12:51:46" (3/4) ... [2025-01-09 00:51:47,110 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-01-09 00:51:47,111 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-09 00:51:47,112 INFO L158 Benchmark]: Toolchain (without parser) took 593.06ms. Allocated memory is still 142.6MB. Free memory was 106.6MB in the beginning and 68.7MB in the end (delta: 37.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-01-09 00:51:47,112 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 126.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 00:51:47,113 INFO L158 Benchmark]: CACSL2BoogieTranslator took 164.92ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 95.5MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 00:51:47,113 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.79ms. Allocated memory is still 142.6MB. Free memory was 94.3MB in the beginning and 93.9MB in the end (delta: 431.5kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 00:51:47,114 INFO L158 Benchmark]: Boogie Preprocessor took 29.97ms. Allocated memory is still 142.6MB. Free memory was 93.9MB in the beginning and 92.8MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 00:51:47,114 INFO L158 Benchmark]: RCFGBuilder took 154.35ms. Allocated memory is still 142.6MB. Free memory was 92.8MB in the beginning and 82.1MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 00:51:47,115 INFO L158 Benchmark]: TraceAbstraction took 213.76ms. Allocated memory is still 142.6MB. Free memory was 82.1MB in the beginning and 69.1MB in the end (delta: 13.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 00:51:47,115 INFO L158 Benchmark]: Witness Printer took 2.81ms. Allocated memory is still 142.6MB. Free memory is still 69.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 00:51:47,116 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 126.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 164.92ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 95.5MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.79ms. Allocated memory is still 142.6MB. Free memory was 94.3MB in the beginning and 93.9MB in the end (delta: 431.5kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.97ms. Allocated memory is still 142.6MB. Free memory was 93.9MB in the beginning and 92.8MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 154.35ms. Allocated memory is still 142.6MB. Free memory was 92.8MB in the beginning and 82.1MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 213.76ms. Allocated memory is still 142.6MB. Free memory was 82.1MB in the beginning and 69.1MB in the end (delta: 13.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Witness Printer took 2.81ms. Allocated memory is still 142.6MB. Free memory is still 69.1MB. 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: 17]: 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 42, overapproximation of someBinaryDOUBLEComparisonOperation at line 27, overapproximation of someBinaryDOUBLEComparisonOperation at line 44, overapproximation of someBinaryDOUBLEComparisonOperation at line 38, overapproximation of someBinaryDOUBLEComparisonOperation at line 28, overapproximation of to_real at line 30. Possible FailurePath: [L22] double E, E0, E1, S0, S1, S; [L23] int i; [L25] E = __VERIFIER_nondet_double() [L26] E0 = __VERIFIER_nondet_double() [L27] CALL assume_abort_if_not(E >= 0. && E <= 1.) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) VAL [\old(cond)=1] [L27] RET assume_abort_if_not(E >= 0. && E <= 1.) [L28] CALL assume_abort_if_not(E0 >= 0. && E0 <= 1.) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) VAL [\old(cond)=1] [L28] RET assume_abort_if_not(E0 >= 0. && E0 <= 1.) [L30] S0 = 0 [L31] S = 0 [L33] i = 0 VAL [i=0] [L33] COND TRUE i <= 1000000 [L34] E1 = E0 [L35] E0 = E [L37] E = __VERIFIER_nondet_double() [L38] CALL assume_abort_if_not(E >= 0. && E <= 1.) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) VAL [\old(cond)=1] [L38] RET assume_abort_if_not(E >= 0. && E <= 1.) VAL [E0=53, i=0] [L40] S1 = S0 [L41] S0 = S [L42] S = 0.7*E - E0*1.3 + E1*1.1 + S0*1.4 - S1*0.7 [L44] CALL __VERIFIER_assert(S >= -4. && S <= 4.) [L17] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 3, 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=19occurred 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, 22 NumberOfCodeBlocks, 22 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 [2025-01-09 00:51:47,132 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/float-benchs/filter2.c -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 e42e84729022b725ebcfce66d0ece68757a1a9b385230356b4d45a24fc6b4ef2 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 00:51:48,916 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 00:51:48,989 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2025-01-09 00:51:48,997 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 00:51:48,997 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 00:51:49,020 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 00:51:49,021 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 00:51:49,021 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 00:51:49,021 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 00:51:49,021 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 00:51:49,022 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 00:51:49,022 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 00:51:49,022 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 00:51:49,022 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 00:51:49,022 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 00:51:49,023 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 00:51:49,023 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 00:51:49,023 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 00:51:49,023 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 00:51:49,023 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 00:51:49,024 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 00:51:49,024 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 00:51:49,024 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 00:51:49,024 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-09 00:51:49,024 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-01-09 00:51:49,024 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-01-09 00:51:49,024 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 00:51:49,024 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 00:51:49,024 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 00:51:49,024 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 00:51:49,024 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 00:51:49,024 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 00:51:49,024 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 00:51:49,024 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 00:51:49,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 00:51:49,025 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 00:51:49,025 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 00:51:49,025 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 00:51:49,025 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 00:51:49,025 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 00:51:49,025 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 00:51:49,025 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 00:51:49,025 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 00:51:49,025 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 00:51:49,025 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-01-09 00:51:49,025 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-01-09 00:51:49,025 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 00:51:49,025 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 00:51:49,025 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 00:51:49,025 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 00:51:49,025 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 -> e42e84729022b725ebcfce66d0ece68757a1a9b385230356b4d45a24fc6b4ef2 [2025-01-09 00:51:49,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 00:51:49,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 00:51:49,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 00:51:49,251 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 00:51:49,252 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 00:51:49,252 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/filter2.c [2025-01-09 00:51:50,417 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5600b4a1c/e563915376244ff9bbf751b68c51ec96/FLAG104918742 [2025-01-09 00:51:50,538 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 00:51:50,538 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/float-benchs/filter2.c [2025-01-09 00:51:50,543 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5600b4a1c/e563915376244ff9bbf751b68c51ec96/FLAG104918742 [2025-01-09 00:51:50,554 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5600b4a1c/e563915376244ff9bbf751b68c51ec96 [2025-01-09 00:51:50,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 00:51:50,559 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 00:51:50,560 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 00:51:50,560 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 00:51:50,563 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 00:51:50,564 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 12:51:50" (1/1) ... [2025-01-09 00:51:50,564 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f3636cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:51:50, skipping insertion in model container [2025-01-09 00:51:50,564 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 12:51:50" (1/1) ... [2025-01-09 00:51:50,576 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 00:51:50,678 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/float-benchs/filter2.c[652,665] [2025-01-09 00:51:50,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 00:51:50,707 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 00:51:50,716 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/float-benchs/filter2.c[652,665] [2025-01-09 00:51:50,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 00:51:50,736 INFO L204 MainTranslator]: Completed translation [2025-01-09 00:51:50,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:51:50 WrapperNode [2025-01-09 00:51:50,738 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 00:51:50,739 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 00:51:50,739 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 00:51:50,739 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 00:51:50,744 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:51:50" (1/1) ... [2025-01-09 00:51:50,755 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:51:50" (1/1) ... [2025-01-09 00:51:50,767 INFO L138 Inliner]: procedures = 15, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 50 [2025-01-09 00:51:50,768 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 00:51:50,769 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 00:51:50,770 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 00:51:50,770 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 00:51:50,775 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:51:50" (1/1) ... [2025-01-09 00:51:50,775 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:51:50" (1/1) ... [2025-01-09 00:51:50,778 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:51:50" (1/1) ... [2025-01-09 00:51:50,785 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]. [2025-01-09 00:51:50,785 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:51:50" (1/1) ... [2025-01-09 00:51:50,785 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:51:50" (1/1) ... [2025-01-09 00:51:50,790 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:51:50" (1/1) ... [2025-01-09 00:51:50,791 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:51:50" (1/1) ... [2025-01-09 00:51:50,795 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:51:50" (1/1) ... [2025-01-09 00:51:50,796 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:51:50" (1/1) ... [2025-01-09 00:51:50,797 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:51:50" (1/1) ... [2025-01-09 00:51:50,798 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 00:51:50,799 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 00:51:50,802 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 00:51:50,802 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 00:51:50,803 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:51:50" (1/1) ... [2025-01-09 00:51:50,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 00:51:50,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 00:51:50,827 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 00:51:50,834 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 00:51:50,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 00:51:50,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-01-09 00:51:50,851 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 00:51:50,851 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 00:51:50,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 00:51:50,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 00:51:50,899 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 00:51:50,901 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 00:51:55,264 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2025-01-09 00:51:55,264 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 00:51:55,273 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 00:51:55,274 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 00:51:55,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 12:51:55 BoogieIcfgContainer [2025-01-09 00:51:55,274 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 00:51:55,275 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 00:51:55,275 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 00:51:55,278 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 00:51:55,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 12:51:50" (1/3) ... [2025-01-09 00:51:55,279 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59541837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 12:51:55, skipping insertion in model container [2025-01-09 00:51:55,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:51:50" (2/3) ... [2025-01-09 00:51:55,279 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59541837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 12:51:55, skipping insertion in model container [2025-01-09 00:51:55,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 12:51:55" (3/3) ... [2025-01-09 00:51:55,281 INFO L128 eAbstractionObserver]: Analyzing ICFG filter2.c [2025-01-09 00:51:55,290 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 00:51:55,293 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG filter2.c that has 2 procedures, 19 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 00:51:55,328 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 00:51:55,337 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;@96701ce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 00:51:55,339 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 00:51:55,342 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-09 00:51:55,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-01-09 00:51:55,347 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 00:51:55,348 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 00:51:55,349 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 00:51:55,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 00:51:55,353 INFO L85 PathProgramCache]: Analyzing trace with hash 759298341, now seen corresponding path program 1 times [2025-01-09 00:51:55,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 00:51:55,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1554810896] [2025-01-09 00:51:55,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 00:51:55,363 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 00:51:55,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2025-01-09 00:51:55,365 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 00:51:55,368 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 00:51:55,406 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-09 00:51:59,986 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 00:51:59,987 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 00:51:59,987 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 00:52:00,057 INFO L256 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-01-09 00:52:00,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 00:52:12,072 WARN L286 SmtUtils]: Spent 8.17s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-01-09 00:52:20,239 WARN L286 SmtUtils]: Spent 8.17s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-01-09 00:52:28,342 WARN L286 SmtUtils]: Spent 8.10s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-01-09 00:52:36,516 WARN L286 SmtUtils]: Spent 8.17s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-01-09 00:52:44,614 WARN L286 SmtUtils]: Spent 8.10s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-01-09 00:52:52,791 WARN L286 SmtUtils]: Spent 8.18s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-01-09 00:53:00,989 WARN L286 SmtUtils]: Spent 8.19s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-01-09 00:53:09,170 WARN L286 SmtUtils]: Spent 8.18s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-01-09 00:53:17,353 WARN L286 SmtUtils]: Spent 8.18s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-01-09 00:53:25,546 WARN L286 SmtUtils]: Spent 8.19s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-01-09 00:53:33,864 WARN L286 SmtUtils]: Spent 8.17s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)