./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 c00e63dc 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-?-c00e63d-m [2025-02-05 12:43:10,642 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 12:43:10,688 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 12:43:10,691 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 12:43:10,691 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 12:43:10,711 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 12:43:10,712 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 12:43:10,712 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 12:43:10,712 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 12:43:10,712 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 12:43:10,713 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 12:43:10,713 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 12:43:10,714 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 12:43:10,714 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 12:43:10,714 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 12:43:10,714 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 12:43:10,714 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 12:43:10,714 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 12:43:10,715 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 12:43:10,715 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 12:43:10,715 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 12:43:10,715 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 12:43:10,715 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 12:43:10,715 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 12:43:10,715 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 12:43:10,715 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 12:43:10,715 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 12:43:10,715 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 12:43:10,715 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 12:43:10,715 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 12:43:10,716 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 12:43:10,716 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 12:43:10,716 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 12:43:10,716 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 12:43:10,716 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 12:43:10,716 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 12:43:10,716 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 12:43:10,716 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 12:43:10,716 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 12:43:10,717 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 12:43:10,717 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 12:43:10,717 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 12:43:10,717 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 12:43:10,717 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 [2025-02-05 12:43:10,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 12:43:10,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 12:43:10,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 12:43:10,960 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 12:43:10,960 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 12:43:10,961 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/filter2.c [2025-02-05 12:43:12,118 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0f25a3362/6c1fa612f09f492991a3f41c8ef77f27/FLAG6ce0dbbda [2025-02-05 12:43:12,312 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 12:43:12,313 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/float-benchs/filter2.c [2025-02-05 12:43:12,319 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0f25a3362/6c1fa612f09f492991a3f41c8ef77f27/FLAG6ce0dbbda [2025-02-05 12:43:12,671 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0f25a3362/6c1fa612f09f492991a3f41c8ef77f27 [2025-02-05 12:43:12,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 12:43:12,673 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 12:43:12,674 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 12:43:12,674 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 12:43:12,678 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 12:43:12,679 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 12:43:12" (1/1) ... [2025-02-05 12:43:12,679 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f879c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:43:12, skipping insertion in model container [2025-02-05 12:43:12,679 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 12:43:12" (1/1) ... [2025-02-05 12:43:12,693 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 12:43:12,795 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] [2025-02-05 12:43:12,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 12:43:12,821 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 12:43:12,829 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] [2025-02-05 12:43:12,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 12:43:12,847 INFO L204 MainTranslator]: Completed translation [2025-02-05 12:43:12,847 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:43:12 WrapperNode [2025-02-05 12:43:12,848 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 12:43:12,849 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 12:43:12,849 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 12:43:12,849 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 12:43:12,853 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:43:12" (1/1) ... [2025-02-05 12:43:12,859 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:43:12" (1/1) ... [2025-02-05 12:43:12,871 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49 [2025-02-05 12:43:12,873 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 12:43:12,873 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 12:43:12,873 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 12:43:12,873 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 12:43:12,880 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:43:12" (1/1) ... [2025-02-05 12:43:12,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:43:12" (1/1) ... [2025-02-05 12:43:12,881 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:43:12" (1/1) ... [2025-02-05 12:43:12,892 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]. [2025-02-05 12:43:12,892 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:43:12" (1/1) ... [2025-02-05 12:43:12,892 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:43:12" (1/1) ... [2025-02-05 12:43:12,895 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:43:12" (1/1) ... [2025-02-05 12:43:12,900 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:43:12" (1/1) ... [2025-02-05 12:43:12,901 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:43:12" (1/1) ... [2025-02-05 12:43:12,901 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:43:12" (1/1) ... [2025-02-05 12:43:12,902 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 12:43:12,902 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 12:43:12,902 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 12:43:12,902 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 12:43:12,903 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:43:12" (1/1) ... [2025-02-05 12:43:12,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 12:43:12,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 12:43:12,932 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) [2025-02-05 12:43:12,939 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 [2025-02-05 12:43:12,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 12:43:12,953 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-05 12:43:12,953 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-05 12:43:12,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 12:43:12,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 12:43:12,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 12:43:12,993 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 12:43:12,995 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 12:43:13,094 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2025-02-05 12:43:13,094 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 12:43:13,102 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 12:43:13,102 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 12:43:13,102 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 12:43:13 BoogieIcfgContainer [2025-02-05 12:43:13,102 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 12:43:13,107 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 12:43:13,107 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 12:43:13,110 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 12:43:13,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 12:43:12" (1/3) ... [2025-02-05 12:43:13,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15aa34af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 12:43:13, skipping insertion in model container [2025-02-05 12:43:13,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:43:12" (2/3) ... [2025-02-05 12:43:13,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15aa34af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 12:43:13, skipping insertion in model container [2025-02-05 12:43:13,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 12:43:13" (3/3) ... [2025-02-05 12:43:13,113 INFO L128 eAbstractionObserver]: Analyzing ICFG filter2.c [2025-02-05 12:43:13,125 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 12:43:13,127 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. [2025-02-05 12:43:13,169 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 12:43:13,178 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;@701228ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 12:43:13,179 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 12:43:13,182 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) [2025-02-05 12:43:13,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-02-05 12:43:13,187 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 12:43:13,188 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 12:43:13,188 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 12:43:13,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 12:43:13,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1182601517, now seen corresponding path program 1 times [2025-02-05 12:43:13,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 12:43:13,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774015346] [2025-02-05 12:43:13,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 12:43:13,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 12:43:13,254 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-05 12:43:13,263 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-05 12:43:13,263 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 12:43:13,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 12:43:13,299 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-05 12:43:13,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 12:43:13,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774015346] [2025-02-05 12:43:13,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774015346] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 12:43:13,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246398105] [2025-02-05 12:43:13,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 12:43:13,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 12:43:13,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 12:43:13,303 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 12:43:13,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-05 12:43:13,339 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-05 12:43:13,353 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-05 12:43:13,353 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 12:43:13,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 12:43:13,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-05 12:43:13,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 12:43:13,363 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-05 12:43:13,363 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 12:43:13,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246398105] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 12:43:13,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 12:43:13,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-05 12:43:13,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839581419] [2025-02-05 12:43:13,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 12:43:13,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-05 12:43:13,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 12:43:13,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-05 12:43:13,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 12:43:13,383 INFO L87 Difference]: Start difference. First 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) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-05 12:43:13,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 12:43:13,394 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2025-02-05 12:43:13,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-05 12:43:13,397 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2025-02-05 12:43:13,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 12:43:13,401 INFO L225 Difference]: With dead ends: 35 [2025-02-05 12:43:13,401 INFO L226 Difference]: Without dead ends: 16 [2025-02-05 12:43:13,404 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 12:43:13,407 INFO L435 NwaCegarLoop]: 21 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, 21 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 [2025-02-05 12:43:13,409 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 12:43:13,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2025-02-05 12:43:13,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2025-02-05 12:43:13,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2025-02-05 12:43:13,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2025-02-05 12:43:13,434 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 22 [2025-02-05 12:43:13,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 12:43:13,434 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2025-02-05 12:43:13,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-05 12:43:13,435 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2025-02-05 12:43:13,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-02-05 12:43:13,436 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 12:43:13,436 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 12:43:13,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-05 12:43:13,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-02-05 12:43:13,637 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 12:43:13,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 12:43:13,638 INFO L85 PathProgramCache]: Analyzing trace with hash -79244692, now seen corresponding path program 1 times [2025-02-05 12:43:13,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 12:43:13,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205309047] [2025-02-05 12:43:13,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 12:43:13,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 12:43:13,644 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-05 12:43:13,655 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-05 12:43:13,655 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 12:43:13,655 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-05 12:43:13,655 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-05 12:43:13,661 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-05 12:43:13,671 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-05 12:43:13,672 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 12:43:13,672 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-05 12:43:13,686 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-05 12:43:13,686 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-05 12:43:13,686 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-02-05 12:43:13,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 12:43:13,689 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-05 12:43:13,705 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-05 12:43:13,709 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.02 12:43:13 BoogieIcfgContainer [2025-02-05 12:43:13,709 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-05 12:43:13,710 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-05 12:43:13,710 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-05 12:43:13,710 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-05 12:43:13,710 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 12:43:13" (3/4) ... [2025-02-05 12:43:13,712 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-05 12:43:13,713 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-05 12:43:13,713 INFO L158 Benchmark]: Toolchain (without parser) took 1039.74ms. Allocated memory is still 142.6MB. Free memory was 112.7MB in the beginning and 61.5MB in the end (delta: 51.2MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-02-05 12:43:13,713 INFO L158 Benchmark]: CDTParser took 0.94ms. Allocated memory is still 201.3MB. Free memory is still 124.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 12:43:13,714 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.92ms. Allocated memory is still 142.6MB. Free memory was 112.3MB in the beginning and 101.5MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-05 12:43:13,715 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.31ms. Allocated memory is still 142.6MB. Free memory was 101.5MB in the beginning and 100.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 12:43:13,715 INFO L158 Benchmark]: Boogie Preprocessor took 28.50ms. Allocated memory is still 142.6MB. Free memory was 100.1MB in the beginning and 99.2MB in the end (delta: 906.7kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 12:43:13,715 INFO L158 Benchmark]: IcfgBuilder took 199.99ms. Allocated memory is still 142.6MB. Free memory was 99.2MB in the beginning and 88.4MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-05 12:43:13,715 INFO L158 Benchmark]: TraceAbstraction took 602.25ms. Allocated memory is still 142.6MB. Free memory was 87.5MB in the beginning and 61.9MB in the end (delta: 25.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-05 12:43:13,715 INFO L158 Benchmark]: Witness Printer took 3.04ms. Allocated memory is still 142.6MB. Free memory was 61.9MB in the beginning and 61.5MB in the end (delta: 447.4kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 12:43:13,716 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.94ms. Allocated memory is still 201.3MB. Free memory is still 124.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 173.92ms. Allocated memory is still 142.6MB. Free memory was 112.3MB in the beginning and 101.5MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.31ms. Allocated memory is still 142.6MB. Free memory was 101.5MB in the beginning and 100.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.50ms. Allocated memory is still 142.6MB. Free memory was 100.1MB in the beginning and 99.2MB in the end (delta: 906.7kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 199.99ms. Allocated memory is still 142.6MB. Free memory was 99.2MB in the beginning and 88.4MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 602.25ms. Allocated memory is still 142.6MB. Free memory was 87.5MB in the beginning and 61.9MB in the end (delta: 25.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 3.04ms. Allocated memory is still 142.6MB. Free memory was 61.9MB in the beginning and 61.5MB in the end (delta: 447.4kB). 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 28, overapproximation of someBinaryDOUBLEComparisonOperation at line 44, overapproximation of someBinaryDOUBLEComparisonOperation at line 27, overapproximation of someBinaryDOUBLEComparisonOperation at line 38, 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: 0.5s, OverallIterations: 2, TraceHistogramMax: 3, 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, 21 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, 21 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 42 SizeOfPredicates, 0 NumberOfNonLiveVariables, 67 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 20/24 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 [2025-02-05 12:43:13,734 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-?-c00e63d-m [2025-02-05 12:43:15,571 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 12:43:15,669 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2025-02-05 12:43:15,676 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 12:43:15,676 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 12:43:15,696 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 12:43:15,697 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 12:43:15,697 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 12:43:15,698 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 12:43:15,698 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 12:43:15,698 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 12:43:15,698 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 12:43:15,699 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 12:43:15,699 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 12:43:15,699 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 12:43:15,699 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 12:43:15,699 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 12:43:15,699 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 12:43:15,700 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 12:43:15,700 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 12:43:15,700 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 12:43:15,700 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 12:43:15,700 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 12:43:15,700 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-05 12:43:15,700 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-05 12:43:15,700 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-05 12:43:15,700 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 12:43:15,700 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 12:43:15,700 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 12:43:15,700 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 12:43:15,701 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 12:43:15,701 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 12:43:15,701 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 12:43:15,701 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 12:43:15,701 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 12:43:15,701 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 12:43:15,702 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 12:43:15,702 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 12:43:15,702 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 12:43:15,702 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-05 12:43:15,702 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-05 12:43:15,702 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 12:43:15,702 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 12:43:15,702 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 12:43:15,702 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 12:43:15,702 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 [2025-02-05 12:43:15,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 12:43:15,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 12:43:15,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 12:43:15,974 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 12:43:15,974 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 12:43:15,976 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/filter2.c [2025-02-05 12:43:17,206 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/636a03fd1/0d52901f30b147249377e156b94b12d5/FLAG0c2764c52 [2025-02-05 12:43:17,379 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 12:43:17,379 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/float-benchs/filter2.c [2025-02-05 12:43:17,386 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/636a03fd1/0d52901f30b147249377e156b94b12d5/FLAG0c2764c52 [2025-02-05 12:43:17,758 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/636a03fd1/0d52901f30b147249377e156b94b12d5 [2025-02-05 12:43:17,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 12:43:17,761 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 12:43:17,762 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 12:43:17,762 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 12:43:17,765 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 12:43:17,765 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 12:43:17" (1/1) ... [2025-02-05 12:43:17,766 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57796d68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:43:17, skipping insertion in model container [2025-02-05 12:43:17,766 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 12:43:17" (1/1) ... [2025-02-05 12:43:17,776 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 12:43:17,873 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] [2025-02-05 12:43:17,885 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 12:43:17,894 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 12:43:17,900 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] [2025-02-05 12:43:17,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 12:43:17,913 INFO L204 MainTranslator]: Completed translation [2025-02-05 12:43:17,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:43:17 WrapperNode [2025-02-05 12:43:17,914 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 12:43:17,914 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 12:43:17,914 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 12:43:17,914 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 12:43:17,918 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:43:17" (1/1) ... [2025-02-05 12:43:17,923 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:43:17" (1/1) ... [2025-02-05 12:43:17,937 INFO L138 Inliner]: procedures = 15, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 50 [2025-02-05 12:43:17,938 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 12:43:17,939 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 12:43:17,940 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 12:43:17,940 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 12:43:17,945 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:43:17" (1/1) ... [2025-02-05 12:43:17,945 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:43:17" (1/1) ... [2025-02-05 12:43:17,948 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:43:17" (1/1) ... [2025-02-05 12:43:17,955 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]. [2025-02-05 12:43:17,956 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:43:17" (1/1) ... [2025-02-05 12:43:17,956 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:43:17" (1/1) ... [2025-02-05 12:43:17,960 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:43:17" (1/1) ... [2025-02-05 12:43:17,960 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:43:17" (1/1) ... [2025-02-05 12:43:17,962 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:43:17" (1/1) ... [2025-02-05 12:43:17,963 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:43:17" (1/1) ... [2025-02-05 12:43:17,965 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 12:43:17,968 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 12:43:17,968 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 12:43:17,968 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 12:43:17,969 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:43:17" (1/1) ... [2025-02-05 12:43:17,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 12:43:17,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 12:43:17,995 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) [2025-02-05 12:43:17,999 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 [2025-02-05 12:43:18,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 12:43:18,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-05 12:43:18,018 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-05 12:43:18,018 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-05 12:43:18,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 12:43:18,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 12:43:18,070 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 12:43:18,072 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 12:43:22,475 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2025-02-05 12:43:22,475 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 12:43:22,481 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 12:43:22,482 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 12:43:22,482 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 12:43:22 BoogieIcfgContainer [2025-02-05 12:43:22,482 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 12:43:22,484 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 12:43:22,484 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 12:43:22,487 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 12:43:22,487 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 12:43:17" (1/3) ... [2025-02-05 12:43:22,488 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@758b5e6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 12:43:22, skipping insertion in model container [2025-02-05 12:43:22,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:43:17" (2/3) ... [2025-02-05 12:43:22,488 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@758b5e6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 12:43:22, skipping insertion in model container [2025-02-05 12:43:22,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 12:43:22" (3/3) ... [2025-02-05 12:43:22,489 INFO L128 eAbstractionObserver]: Analyzing ICFG filter2.c [2025-02-05 12:43:22,501 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 12:43:22,503 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. [2025-02-05 12:43:22,536 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 12:43:22,544 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;@3fff0909, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 12:43:22,544 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 12:43:22,547 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) [2025-02-05 12:43:22,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-02-05 12:43:22,552 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 12:43:22,552 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 12:43:22,552 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 12:43:22,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 12:43:22,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1182601517, now seen corresponding path program 1 times [2025-02-05 12:43:22,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-05 12:43:22,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482717808] [2025-02-05 12:43:22,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 12:43:22,564 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 [2025-02-05 12:43:22,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2025-02-05 12:43:22,566 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) [2025-02-05 12:43:22,568 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 [2025-02-05 12:43:22,608 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-05 12:43:23,518 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-05 12:43:23,519 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 12:43:23,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 12:43:23,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-05 12:43:23,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 12:43:23,580 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-05 12:43:23,580 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 12:43:23,581 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-05 12:43:23,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482717808] [2025-02-05 12:43:23,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482717808] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 12:43:23,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 12:43:23,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 12:43:23,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715323102] [2025-02-05 12:43:23,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 12:43:23,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-05 12:43:23,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-05 12:43:23,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-05 12:43:23,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 12:43:23,599 INFO L87 Difference]: Start difference. First 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) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-05 12:43:23,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 12:43:23,620 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2025-02-05 12:43:23,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-05 12:43:23,622 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2025-02-05 12:43:23,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 12:43:23,625 INFO L225 Difference]: With dead ends: 35 [2025-02-05 12:43:23,625 INFO L226 Difference]: Without dead ends: 16 [2025-02-05 12:43:23,627 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 12:43:23,628 INFO L435 NwaCegarLoop]: 21 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, 21 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 [2025-02-05 12:43:23,629 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 12:43:23,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2025-02-05 12:43:23,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2025-02-05 12:43:23,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2025-02-05 12:43:23,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2025-02-05 12:43:23,650 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 22 [2025-02-05 12:43:23,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 12:43:23,650 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2025-02-05 12:43:23,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-05 12:43:23,651 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2025-02-05 12:43:23,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-02-05 12:43:23,651 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 12:43:23,653 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 12:43:23,681 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 [2025-02-05 12:43:23,853 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 [2025-02-05 12:43:23,854 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 12:43:23,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 12:43:23,855 INFO L85 PathProgramCache]: Analyzing trace with hash -79244692, now seen corresponding path program 1 times [2025-02-05 12:43:23,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-05 12:43:23,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427192254] [2025-02-05 12:43:23,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 12:43:23,855 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 [2025-02-05 12:43:23,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2025-02-05 12:43:23,857 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) [2025-02-05 12:43:23,858 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 [2025-02-05 12:43:23,879 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-05 12:43:29,608 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-05 12:43:29,608 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 12:43:29,608 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 12:43:29,668 INFO L256 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-05 12:43:29,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 12:43:41,439 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) [2025-02-05 12:43:49,611 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) [2025-02-05 12:43:57,715 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) [2025-02-05 12:44:05,896 WARN L286 SmtUtils]: Spent 8.18s 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) [2025-02-05 12:44:13,992 WARN L286 SmtUtils]: Spent 8.09s 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) [2025-02-05 12:44:22,168 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) [2025-02-05 12:44:30,352 WARN L286 SmtUtils]: Spent 8.18s 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) [2025-02-05 12:44:38,527 WARN L286 SmtUtils]: Spent 8.17s 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) [2025-02-05 12:44:46,709 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) [2025-02-05 12:44:54,901 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)