./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_0730a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_0730a.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 08b98e45599512b8d6c489b1dd455db4184e1609dc88e012fc4f2e92ac326cf0 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 11:49:33,726 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 11:49:33,782 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 11:49:33,788 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 11:49:33,790 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 11:49:33,812 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 11:49:33,814 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 11:49:33,815 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 11:49:33,816 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 11:49:33,816 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 11:49:33,816 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 11:49:33,817 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 11:49:33,817 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 11:49:33,817 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 11:49:33,818 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 11:49:33,818 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 11:49:33,820 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 11:49:33,820 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 11:49:33,821 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 11:49:33,821 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 11:49:33,821 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 11:49:33,824 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 11:49:33,824 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 11:49:33,824 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 11:49:33,825 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 11:49:33,825 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 11:49:33,825 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 11:49:33,826 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 11:49:33,826 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 11:49:33,826 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 11:49:33,826 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 11:49:33,827 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 11:49:33,830 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 11:49:33,831 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 11:49:33,831 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 11:49:33,831 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 11:49:33,832 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 11:49:33,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 11:49:33,832 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 11:49:33,833 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 11:49:33,833 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 11:49:33,833 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 11:49:33,834 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08b98e45599512b8d6c489b1dd455db4184e1609dc88e012fc4f2e92ac326cf0 [2024-11-18 11:49:34,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 11:49:34,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 11:49:34,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 11:49:34,149 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 11:49:34,150 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 11:49:34,151 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0730a.c [2024-11-18 11:49:35,536 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 11:49:35,697 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 11:49:35,698 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0730a.c [2024-11-18 11:49:35,705 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee30e5f29/e4048d6c29644a3d8a6eadc62e420f54/FLAGdbe97ce67 [2024-11-18 11:49:35,718 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee30e5f29/e4048d6c29644a3d8a6eadc62e420f54 [2024-11-18 11:49:35,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 11:49:35,721 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 11:49:35,723 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 11:49:35,723 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 11:49:35,733 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 11:49:35,733 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:49:35" (1/1) ... [2024-11-18 11:49:35,734 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79c60ab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:35, skipping insertion in model container [2024-11-18 11:49:35,735 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:49:35" (1/1) ... [2024-11-18 11:49:35,752 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 11:49:35,902 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0730a.c[2102,2115] [2024-11-18 11:49:35,905 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 11:49:35,912 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 11:49:35,938 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0730a.c[2102,2115] [2024-11-18 11:49:35,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 11:49:35,957 INFO L204 MainTranslator]: Completed translation [2024-11-18 11:49:35,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:35 WrapperNode [2024-11-18 11:49:35,958 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 11:49:35,959 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 11:49:35,959 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 11:49:35,960 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 11:49:35,966 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:35" (1/1) ... [2024-11-18 11:49:35,973 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:35" (1/1) ... [2024-11-18 11:49:35,990 INFO L138 Inliner]: procedures = 17, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 146 [2024-11-18 11:49:35,991 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 11:49:35,991 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 11:49:35,992 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 11:49:35,992 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 11:49:36,001 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:35" (1/1) ... [2024-11-18 11:49:36,001 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:35" (1/1) ... [2024-11-18 11:49:36,007 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:35" (1/1) ... [2024-11-18 11:49:36,019 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-11-18 11:49:36,020 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:35" (1/1) ... [2024-11-18 11:49:36,020 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:35" (1/1) ... [2024-11-18 11:49:36,029 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:35" (1/1) ... [2024-11-18 11:49:36,031 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:35" (1/1) ... [2024-11-18 11:49:36,036 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:35" (1/1) ... [2024-11-18 11:49:36,037 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:35" (1/1) ... [2024-11-18 11:49:36,040 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 11:49:36,041 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 11:49:36,041 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 11:49:36,042 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 11:49:36,042 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:35" (1/1) ... [2024-11-18 11:49:36,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 11:49:36,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 11:49:36,079 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 11:49:36,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 11:49:36,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 11:49:36,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 11:49:36,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 11:49:36,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 11:49:36,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 11:49:36,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 11:49:36,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-11-18 11:49:36,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-11-18 11:49:36,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-11-18 11:49:36,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-11-18 11:49:36,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 11:49:36,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 11:49:36,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-18 11:49:36,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-18 11:49:36,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-11-18 11:49:36,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-11-18 11:49:36,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-11-18 11:49:36,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-11-18 11:49:36,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 11:49:36,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 11:49:36,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 11:49:36,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 11:49:36,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-18 11:49:36,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-18 11:49:36,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 11:49:36,226 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 11:49:36,227 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 11:49:36,400 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2024-11-18 11:49:36,400 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 11:49:36,413 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 11:49:36,413 INFO L316 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-18 11:49:36,414 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:49:36 BoogieIcfgContainer [2024-11-18 11:49:36,414 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 11:49:36,416 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 11:49:36,416 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 11:49:36,418 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 11:49:36,419 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:49:35" (1/3) ... [2024-11-18 11:49:36,420 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@636d69bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:49:36, skipping insertion in model container [2024-11-18 11:49:36,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:35" (2/3) ... [2024-11-18 11:49:36,421 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@636d69bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:49:36, skipping insertion in model container [2024-11-18 11:49:36,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:49:36" (3/3) ... [2024-11-18 11:49:36,422 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0730a.c [2024-11-18 11:49:36,437 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 11:49:36,437 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 11:49:36,483 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 11:49:36,489 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;@6bd8d4cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 11:49:36,489 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 11:49:36,493 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 42 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:49:36,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-18 11:49:36,497 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 11:49:36,498 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 11:49:36,498 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 11:49:36,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 11:49:36,502 INFO L85 PathProgramCache]: Analyzing trace with hash 915443515, now seen corresponding path program 1 times [2024-11-18 11:49:36,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 11:49:36,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017544442] [2024-11-18 11:49:36,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 11:49:36,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 11:49:36,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 11:49:36,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 11:49:36,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 11:49:36,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017544442] [2024-11-18 11:49:36,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017544442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 11:49:36,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 11:49:36,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 11:49:36,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960449857] [2024-11-18 11:49:36,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 11:49:36,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 11:49:36,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 11:49:36,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 11:49:36,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 11:49:36,692 INFO L87 Difference]: Start difference. First operand has 43 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 42 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:49:36,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 11:49:36,727 INFO L93 Difference]: Finished difference Result 84 states and 130 transitions. [2024-11-18 11:49:36,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 11:49:36,729 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-18 11:49:36,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 11:49:36,767 INFO L225 Difference]: With dead ends: 84 [2024-11-18 11:49:36,768 INFO L226 Difference]: Without dead ends: 40 [2024-11-18 11:49:36,778 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 11:49:36,785 INFO L432 NwaCegarLoop]: 56 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, 56 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 [2024-11-18 11:49:36,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 11:49:36,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-18 11:49:36,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-18 11:49:36,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.358974358974359) internal successors, (53), 39 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:49:36,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 53 transitions. [2024-11-18 11:49:36,819 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 53 transitions. Word has length 11 [2024-11-18 11:49:36,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 11:49:36,819 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 53 transitions. [2024-11-18 11:49:36,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:49:36,820 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 53 transitions. [2024-11-18 11:49:36,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-18 11:49:36,822 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 11:49:36,822 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 11:49:36,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 11:49:36,823 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 11:49:36,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 11:49:36,825 INFO L85 PathProgramCache]: Analyzing trace with hash 146573381, now seen corresponding path program 1 times [2024-11-18 11:49:36,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 11:49:36,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325662389] [2024-11-18 11:49:36,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 11:49:36,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 11:49:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-18 11:49:36,902 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-18 11:49:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-18 11:49:36,966 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-18 11:49:36,966 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-18 11:49:36,968 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-18 11:49:36,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 11:49:36,974 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-18 11:49:36,989 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-18 11:49:36,991 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 11:49:36 BoogieIcfgContainer [2024-11-18 11:49:36,992 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-18 11:49:36,992 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-18 11:49:36,992 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-18 11:49:36,992 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-18 11:49:36,993 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:49:36" (3/4) ... [2024-11-18 11:49:36,995 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-18 11:49:36,996 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-18 11:49:36,996 INFO L158 Benchmark]: Toolchain (without parser) took 1274.78ms. Allocated memory is still 276.8MB. Free memory was 207.3MB in the beginning and 228.4MB in the end (delta: -21.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 11:49:36,996 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 138.4MB. Free memory was 107.1MB in the beginning and 107.1MB in the end (delta: 44.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 11:49:36,997 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.55ms. Allocated memory is still 276.8MB. Free memory was 207.3MB in the beginning and 193.5MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-18 11:49:36,997 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.67ms. Allocated memory is still 276.8MB. Free memory was 193.5MB in the beginning and 191.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-18 11:49:36,998 INFO L158 Benchmark]: Boogie Preprocessor took 49.24ms. Allocated memory is still 276.8MB. Free memory was 191.6MB in the beginning and 188.9MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-18 11:49:36,998 INFO L158 Benchmark]: RCFGBuilder took 372.68ms. Allocated memory is still 276.8MB. Free memory was 188.9MB in the beginning and 171.0MB in the end (delta: 17.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-18 11:49:36,998 INFO L158 Benchmark]: TraceAbstraction took 576.15ms. Allocated memory is still 276.8MB. Free memory was 170.4MB in the beginning and 228.4MB in the end (delta: -58.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 11:49:36,998 INFO L158 Benchmark]: Witness Printer took 3.52ms. Allocated memory is still 276.8MB. Free memory is still 228.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 11:49:37,000 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 138.4MB. Free memory was 107.1MB in the beginning and 107.1MB in the end (delta: 44.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 235.55ms. Allocated memory is still 276.8MB. Free memory was 207.3MB in the beginning and 193.5MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.67ms. Allocated memory is still 276.8MB. Free memory was 193.5MB in the beginning and 191.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.24ms. Allocated memory is still 276.8MB. Free memory was 191.6MB in the beginning and 188.9MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 372.68ms. Allocated memory is still 276.8MB. Free memory was 188.9MB in the beginning and 171.0MB in the end (delta: 17.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 576.15ms. Allocated memory is still 276.8MB. Free memory was 170.4MB in the beginning and 228.4MB in the end (delta: -58.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.52ms. Allocated memory is still 276.8MB. Free memory is still 228.4MB. 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: 109]: 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 someBinaryArithmeticFLOAToperation at line 29. Possible FailurePath: [L14] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L103] float x = 1.0f / 0.0f; [L105] CALL, EXPR __ieee754_sqrtf(x) [L17] float z; [L18] __uint32_t r, hx; [L19] __int32_t ix, s, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4286578702] [L22] ieee_float_shape_type gf_u; [L23] gf_u.value = (x) [L24] EXPR gf_u.word [L24] (ix) = gf_u.word [L26] hx = ix & 0x7fffffff VAL [hx=2139095040, ix=-8388608, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4286578702] [L28] COND TRUE !((hx) < 0x7f800000L) [L29] return x * x + x; VAL [ix=-8388608, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4286578702] [L105] RET, EXPR __ieee754_sqrtf(x) [L105] float res = __ieee754_sqrtf(x); [L108] CALL, EXPR isinf_float(res) [L85] __int32_t ix; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4286578701] [L87] ieee_float_shape_type gf_u; [L88] gf_u.value = (x) [L89] EXPR gf_u.word [L89] (ix) = gf_u.word [L91] ix &= 0x7fffffff [L92] return ((ix) == 0x7f800000L); VAL [\result=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4286578701] [L108] RET, EXPR isinf_float(res) [L108] COND TRUE !isinf_float(res) [L109] reach_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 56 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, 56 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-18 11:49:37,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_0730a.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 08b98e45599512b8d6c489b1dd455db4184e1609dc88e012fc4f2e92ac326cf0 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 11:49:39,065 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 11:49:39,126 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-18 11:49:39,131 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 11:49:39,133 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 11:49:39,161 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 11:49:39,161 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 11:49:39,161 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 11:49:39,162 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 11:49:39,162 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 11:49:39,162 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 11:49:39,163 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 11:49:39,163 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 11:49:39,165 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 11:49:39,165 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 11:49:39,165 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 11:49:39,165 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 11:49:39,166 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 11:49:39,166 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 11:49:39,166 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 11:49:39,166 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 11:49:39,167 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 11:49:39,170 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 11:49:39,170 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-18 11:49:39,170 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-18 11:49:39,170 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 11:49:39,170 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-18 11:49:39,171 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 11:49:39,171 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 11:49:39,171 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 11:49:39,171 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 11:49:39,171 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 11:49:39,171 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 11:49:39,171 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 11:49:39,172 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 11:49:39,172 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 11:49:39,172 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 11:49:39,172 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 11:49:39,172 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-18 11:49:39,172 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-18 11:49:39,173 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 11:49:39,173 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 11:49:39,173 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 11:49:39,173 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 11:49:39,173 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08b98e45599512b8d6c489b1dd455db4184e1609dc88e012fc4f2e92ac326cf0 [2024-11-18 11:49:39,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 11:49:39,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 11:49:39,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 11:49:39,470 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 11:49:39,470 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 11:49:39,471 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0730a.c [2024-11-18 11:49:40,923 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 11:49:41,106 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 11:49:41,110 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0730a.c [2024-11-18 11:49:41,118 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9f4f1c16/e643f9cb8a4246b0b9cb16d8dcb4024f/FLAGb520b96e9 [2024-11-18 11:49:41,131 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9f4f1c16/e643f9cb8a4246b0b9cb16d8dcb4024f [2024-11-18 11:49:41,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 11:49:41,135 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 11:49:41,137 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 11:49:41,137 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 11:49:41,146 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 11:49:41,147 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:49:41" (1/1) ... [2024-11-18 11:49:41,147 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dfe9def and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:41, skipping insertion in model container [2024-11-18 11:49:41,148 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:49:41" (1/1) ... [2024-11-18 11:49:41,168 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 11:49:41,352 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0730a.c[2102,2115] [2024-11-18 11:49:41,355 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 11:49:41,367 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 11:49:41,394 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0730a.c[2102,2115] [2024-11-18 11:49:41,399 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 11:49:41,417 INFO L204 MainTranslator]: Completed translation [2024-11-18 11:49:41,417 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:41 WrapperNode [2024-11-18 11:49:41,417 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 11:49:41,418 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 11:49:41,418 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 11:49:41,418 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 11:49:41,424 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:41" (1/1) ... [2024-11-18 11:49:41,433 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:41" (1/1) ... [2024-11-18 11:49:41,452 INFO L138 Inliner]: procedures = 20, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 129 [2024-11-18 11:49:41,453 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 11:49:41,453 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 11:49:41,453 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 11:49:41,454 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 11:49:41,462 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:41" (1/1) ... [2024-11-18 11:49:41,462 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:41" (1/1) ... [2024-11-18 11:49:41,466 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:41" (1/1) ... [2024-11-18 11:49:41,478 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-11-18 11:49:41,481 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:41" (1/1) ... [2024-11-18 11:49:41,481 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:41" (1/1) ... [2024-11-18 11:49:41,488 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:41" (1/1) ... [2024-11-18 11:49:41,490 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:41" (1/1) ... [2024-11-18 11:49:41,496 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:41" (1/1) ... [2024-11-18 11:49:41,497 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:41" (1/1) ... [2024-11-18 11:49:41,500 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 11:49:41,501 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 11:49:41,501 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 11:49:41,502 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 11:49:41,502 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:41" (1/1) ... [2024-11-18 11:49:41,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 11:49:41,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 11:49:41,539 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 11:49:41,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 11:49:41,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 11:49:41,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-18 11:49:41,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-18 11:49:41,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-18 11:49:41,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-18 11:49:41,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 11:49:41,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2024-11-18 11:49:41,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2024-11-18 11:49:41,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2024-11-18 11:49:41,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2024-11-18 11:49:41,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-18 11:49:41,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-18 11:49:41,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-18 11:49:41,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-11-18 11:49:41,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 11:49:41,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 11:49:41,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2024-11-18 11:49:41,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2024-11-18 11:49:41,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2024-11-18 11:49:41,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#3 [2024-11-18 11:49:41,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-18 11:49:41,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-18 11:49:41,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-18 11:49:41,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-11-18 11:49:41,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 11:49:41,659 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 11:49:41,661 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 11:49:42,441 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2024-11-18 11:49:42,441 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 11:49:42,450 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 11:49:42,450 INFO L316 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-18 11:49:42,451 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:49:42 BoogieIcfgContainer [2024-11-18 11:49:42,451 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 11:49:42,453 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 11:49:42,453 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 11:49:42,455 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 11:49:42,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:49:41" (1/3) ... [2024-11-18 11:49:42,456 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@af3dd86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:49:42, skipping insertion in model container [2024-11-18 11:49:42,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:41" (2/3) ... [2024-11-18 11:49:42,456 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@af3dd86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:49:42, skipping insertion in model container [2024-11-18 11:49:42,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:49:42" (3/3) ... [2024-11-18 11:49:42,457 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0730a.c [2024-11-18 11:49:42,469 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 11:49:42,469 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 11:49:42,526 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 11:49:42,533 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;@2840b979, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 11:49:42,534 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 11:49:42,538 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 35 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:49:42,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-18 11:49:42,543 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 11:49:42,544 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 11:49:42,544 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 11:49:42,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 11:49:42,550 INFO L85 PathProgramCache]: Analyzing trace with hash 175857115, now seen corresponding path program 1 times [2024-11-18 11:49:42,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-18 11:49:42,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [174050340] [2024-11-18 11:49:42,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 11:49:42,562 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 [2024-11-18 11:49:42,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-18 11:49:42,568 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-18 11:49:42,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-18 11:49:42,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 11:49:42,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 11:49:42,726 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 11:49:42,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 11:49:42,741 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 11:49:42,742 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-18 11:49:42,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [174050340] [2024-11-18 11:49:42,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [174050340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 11:49:42,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 11:49:42,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 11:49:42,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718884883] [2024-11-18 11:49:42,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 11:49:42,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 11:49:42,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-18 11:49:42,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 11:49:42,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 11:49:42,772 INFO L87 Difference]: Start difference. First operand has 36 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 35 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:49:42,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 11:49:42,789 INFO L93 Difference]: Finished difference Result 70 states and 108 transitions. [2024-11-18 11:49:42,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 11:49:42,791 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-18 11:49:42,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 11:49:42,798 INFO L225 Difference]: With dead ends: 70 [2024-11-18 11:49:42,799 INFO L226 Difference]: Without dead ends: 33 [2024-11-18 11:49:42,801 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 11:49:42,805 INFO L432 NwaCegarLoop]: 46 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, 46 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 [2024-11-18 11:49:42,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 11:49:42,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-18 11:49:42,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-18 11:49:42,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.34375) internal successors, (43), 32 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:49:42,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2024-11-18 11:49:42,836 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 11 [2024-11-18 11:49:42,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 11:49:42,837 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2024-11-18 11:49:42,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:49:42,837 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2024-11-18 11:49:42,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-18 11:49:42,838 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 11:49:42,838 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 11:49:42,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-11-18 11:49:43,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 11:49:43,042 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 11:49:43,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 11:49:43,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1305768564, now seen corresponding path program 1 times [2024-11-18 11:49:43,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-18 11:49:43,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099975913] [2024-11-18 11:49:43,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 11:49:43,044 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 [2024-11-18 11:49:43,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-18 11:49:43,048 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-18 11:49:43,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-18 11:49:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 11:49:43,215 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 11:49:43,221 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 11:49:43,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 11:49:43,459 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 11:49:43,459 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-18 11:49:43,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099975913] [2024-11-18 11:49:43,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1099975913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 11:49:43,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 11:49:43,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 11:49:43,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75046157] [2024-11-18 11:49:43,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 11:49:43,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 11:49:43,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-18 11:49:43,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 11:49:43,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-18 11:49:43,464 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:49:44,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 11:49:44,151 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2024-11-18 11:49:44,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 11:49:44,152 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-18 11:49:44,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 11:49:44,153 INFO L225 Difference]: With dead ends: 42 [2024-11-18 11:49:44,153 INFO L226 Difference]: Without dead ends: 34 [2024-11-18 11:49:44,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-18 11:49:44,154 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 46 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 11:49:44,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 196 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 11:49:44,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-18 11:49:44,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2024-11-18 11:49:44,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:49:44,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2024-11-18 11:49:44,158 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 13 [2024-11-18 11:49:44,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 11:49:44,158 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2024-11-18 11:49:44,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:49:44,158 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2024-11-18 11:49:44,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-18 11:49:44,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 11:49:44,159 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 11:49:44,166 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-18 11:49:44,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 11:49:44,365 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 11:49:44,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 11:49:44,365 INFO L85 PathProgramCache]: Analyzing trace with hash -358919737, now seen corresponding path program 1 times [2024-11-18 11:49:44,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-18 11:49:44,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [828555515] [2024-11-18 11:49:44,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 11:49:44,366 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 [2024-11-18 11:49:44,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-18 11:49:44,368 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-18 11:49:44,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-18 11:49:44,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 11:49:44,603 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 11:49:44,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 11:49:44,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 11:49:44,736 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 11:49:44,736 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-18 11:49:44,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [828555515] [2024-11-18 11:49:44,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [828555515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 11:49:44,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 11:49:44,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 11:49:44,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691267114] [2024-11-18 11:49:44,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 11:49:44,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 11:49:44,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-18 11:49:44,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 11:49:44,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 11:49:44,738 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:49:44,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 11:49:44,827 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2024-11-18 11:49:44,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 11:49:44,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-18 11:49:44,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 11:49:44,828 INFO L225 Difference]: With dead ends: 33 [2024-11-18 11:49:44,828 INFO L226 Difference]: Without dead ends: 0 [2024-11-18 11:49:44,828 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 11:49:44,829 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 11:49:44,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 7 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 11:49:44,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-18 11:49:44,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-18 11:49:44,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:49:44,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-18 11:49:44,831 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2024-11-18 11:49:44,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 11:49:44,831 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-18 11:49:44,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:49:44,831 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-18 11:49:44,835 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-18 11:49:44,838 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-18 11:49:44,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-11-18 11:49:45,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 11:49:45,042 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-18 11:49:45,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-18 11:49:45,112 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-18 11:49:45,128 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 11:49:45 BoogieIcfgContainer [2024-11-18 11:49:45,128 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-18 11:49:45,129 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-18 11:49:45,129 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-18 11:49:45,129 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-18 11:49:45,130 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:49:42" (3/4) ... [2024-11-18 11:49:45,132 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-18 11:49:45,139 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2024-11-18 11:49:45,139 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-11-18 11:49:45,140 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-18 11:49:45,140 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-18 11:49:45,289 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-18 11:49:45,290 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-18 11:49:45,290 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-18 11:49:45,290 INFO L158 Benchmark]: Toolchain (without parser) took 4155.40ms. Allocated memory was 81.8MB in the beginning and 113.2MB in the end (delta: 31.5MB). Free memory was 41.3MB in the beginning and 86.1MB in the end (delta: -44.8MB). Peak memory consumption was 23.7MB. Max. memory is 16.1GB. [2024-11-18 11:49:45,291 INFO L158 Benchmark]: CDTParser took 0.94ms. Allocated memory is still 81.8MB. Free memory is still 63.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 11:49:45,291 INFO L158 Benchmark]: CACSL2BoogieTranslator took 280.60ms. Allocated memory is still 81.8MB. Free memory was 41.0MB in the beginning and 50.8MB in the end (delta: -9.7MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2024-11-18 11:49:45,291 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.73ms. Allocated memory is still 81.8MB. Free memory was 50.8MB in the beginning and 48.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-18 11:49:45,291 INFO L158 Benchmark]: Boogie Preprocessor took 47.28ms. Allocated memory is still 81.8MB. Free memory was 48.9MB in the beginning and 46.0MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-18 11:49:45,292 INFO L158 Benchmark]: RCFGBuilder took 949.63ms. Allocated memory was 81.8MB in the beginning and 113.2MB in the end (delta: 31.5MB). Free memory was 46.0MB in the beginning and 84.9MB in the end (delta: -38.9MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2024-11-18 11:49:45,292 INFO L158 Benchmark]: TraceAbstraction took 2676.08ms. Allocated memory is still 113.2MB. Free memory was 84.4MB in the beginning and 53.3MB in the end (delta: 31.0MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. [2024-11-18 11:49:45,292 INFO L158 Benchmark]: Witness Printer took 160.92ms. Allocated memory is still 113.2MB. Free memory was 53.3MB in the beginning and 86.1MB in the end (delta: -32.8MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. [2024-11-18 11:49:45,293 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 81.8MB. Free memory is still 63.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 280.60ms. Allocated memory is still 81.8MB. Free memory was 41.0MB in the beginning and 50.8MB in the end (delta: -9.7MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.73ms. Allocated memory is still 81.8MB. Free memory was 50.8MB in the beginning and 48.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.28ms. Allocated memory is still 81.8MB. Free memory was 48.9MB in the beginning and 46.0MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 949.63ms. Allocated memory was 81.8MB in the beginning and 113.2MB in the end (delta: 31.5MB). Free memory was 46.0MB in the beginning and 84.9MB in the end (delta: -38.9MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. * TraceAbstraction took 2676.08ms. Allocated memory is still 113.2MB. Free memory was 84.4MB in the beginning and 53.3MB in the end (delta: 31.0MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. * Witness Printer took 160.92ms. Allocated memory is still 113.2MB. Free memory was 53.3MB in the beginning and 86.1MB in the end (delta: -32.8MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 109]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 50 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 50 mSDsluCounter, 249 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 167 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 83 IncrementalHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 82 mSDtfsCounter, 83 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, InterpolantAutomatonStates: 16, 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, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 4 QuantifiedInterpolants, 247 SizeOfPredicates, 8 NumberOfNonLiveVariables, 143 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 86]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 75]: Loop Invariant Derived loop invariant: null RESULT: Ultimate proved your program to be correct! [2024-11-18 11:49:45,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE