./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_0930.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -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_0930.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.graphml --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 d0cec7ddb8a2645a0ba1656999ba73d1a21b29e3fbe1129f436b67dd30c2f050 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 16:44:38,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 16:44:38,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 16:44:38,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 16:44:38,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 16:44:38,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 16:44:38,862 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 16:44:38,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 16:44:38,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 16:44:38,872 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 16:44:38,873 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 16:44:38,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 16:44:38,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 16:44:38,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 16:44:38,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 16:44:38,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 16:44:38,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 16:44:38,880 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 16:44:38,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 16:44:38,886 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 16:44:38,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 16:44:38,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 16:44:38,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 16:44:38,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 16:44:38,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 16:44:38,893 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 16:44:38,893 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 16:44:38,894 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 16:44:38,895 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 16:44:38,895 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 16:44:38,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 16:44:38,896 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 16:44:38,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 16:44:38,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 16:44:38,899 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 16:44:38,899 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 16:44:38,899 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 16:44:38,900 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 16:44:38,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 16:44:38,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 16:44:38,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 16:44:38,901 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-20 16:44:38,916 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 16:44:38,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 16:44:38,917 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 16:44:38,918 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 16:44:38,918 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 16:44:38,918 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 16:44:38,919 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 16:44:38,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 16:44:38,919 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 16:44:38,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 16:44:38,920 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 16:44:38,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 16:44:38,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 16:44:38,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 16:44:38,920 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 16:44:38,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 16:44:38,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 16:44:38,921 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 16:44:38,921 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 16:44:38,921 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 16:44:38,921 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 16:44:38,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 16:44:38,922 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 16:44:38,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 16:44:38,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:44:38,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 16:44:38,922 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 16:44:38,922 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 16:44:38,922 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 16:44:38,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 16:44:38,923 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 16:44:38,923 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 16:44:38,923 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 16:44:38,923 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d0cec7ddb8a2645a0ba1656999ba73d1a21b29e3fbe1129f436b67dd30c2f050 [2022-02-20 16:44:39,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 16:44:39,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 16:44:39,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 16:44:39,112 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 16:44:39,113 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 16:44:39,114 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0930.c [2022-02-20 16:44:39,171 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a98bb433/44d32f57e29c4e66886cb05522b31fc6/FLAG45e33762b [2022-02-20 16:44:39,558 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 16:44:39,558 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0930.c [2022-02-20 16:44:39,571 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a98bb433/44d32f57e29c4e66886cb05522b31fc6/FLAG45e33762b [2022-02-20 16:44:39,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a98bb433/44d32f57e29c4e66886cb05522b31fc6 [2022-02-20 16:44:39,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 16:44:39,589 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 16:44:39,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 16:44:39,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 16:44:39,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 16:44:39,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:44:39" (1/1) ... [2022-02-20 16:44:39,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30ec10e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:39, skipping insertion in model container [2022-02-20 16:44:39,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:44:39" (1/1) ... [2022-02-20 16:44:39,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 16:44:39,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 16:44:39,787 WARN L230 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_0930.c[3104,3117] [2022-02-20 16:44:39,792 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:44:39,797 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 16:44:39,836 WARN L230 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_0930.c[3104,3117] [2022-02-20 16:44:39,837 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:44:39,846 INFO L208 MainTranslator]: Completed translation [2022-02-20 16:44:39,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:39 WrapperNode [2022-02-20 16:44:39,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 16:44:39,847 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 16:44:39,847 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 16:44:39,847 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 16:44:39,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:39" (1/1) ... [2022-02-20 16:44:39,858 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:39" (1/1) ... [2022-02-20 16:44:39,883 INFO L137 Inliner]: procedures = 17, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 169 [2022-02-20 16:44:39,883 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 16:44:39,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 16:44:39,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 16:44:39,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 16:44:39,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:39" (1/1) ... [2022-02-20 16:44:39,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:39" (1/1) ... [2022-02-20 16:44:39,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:39" (1/1) ... [2022-02-20 16:44:39,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:39" (1/1) ... [2022-02-20 16:44:39,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:39" (1/1) ... [2022-02-20 16:44:39,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:39" (1/1) ... [2022-02-20 16:44:39,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:39" (1/1) ... [2022-02-20 16:44:39,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 16:44:39,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 16:44:39,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 16:44:39,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 16:44:39,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:39" (1/1) ... [2022-02-20 16:44:39,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:44:39,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 16:44:39,950 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-20 16:44:39,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-20 16:44:39,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 16:44:39,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-20 16:44:39,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-20 16:44:39,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-02-20 16:44:39,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-20 16:44:39,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-02-20 16:44:39,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 16:44:39,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 16:44:39,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-20 16:44:39,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-20 16:44:40,070 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 16:44:40,071 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 16:44:40,295 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 16:44:40,300 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 16:44:40,300 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-02-20 16:44:40,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:44:40 BoogieIcfgContainer [2022-02-20 16:44:40,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 16:44:40,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 16:44:40,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 16:44:40,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 16:44:40,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 04:44:39" (1/3) ... [2022-02-20 16:44:40,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1993fade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:44:40, skipping insertion in model container [2022-02-20 16:44:40,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:39" (2/3) ... [2022-02-20 16:44:40,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1993fade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:44:40, skipping insertion in model container [2022-02-20 16:44:40,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:44:40" (3/3) ... [2022-02-20 16:44:40,307 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0930.c [2022-02-20 16:44:40,310 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 16:44:40,310 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 16:44:40,345 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 16:44:40,349 INFO L339 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2022-02-20 16:44:40,349 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-20 16:44:40,359 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 36 states have (on average 1.7222222222222223) internal successors, (62), 37 states have internal predecessors, (62), 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) [2022-02-20 16:44:40,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-02-20 16:44:40,362 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 16:44:40,363 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 16:44:40,363 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 16:44:40,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 16:44:40,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1903470238, now seen corresponding path program 1 times [2022-02-20 16:44:40,372 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 16:44:40,372 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235029758] [2022-02-20 16:44:40,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 16:44:40,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 16:44:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 16:44:40,468 INFO L290 TraceCheckUtils]: 0: Hoare triple {41#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(20, 2);call #Ultimate.allocInit(12, 3);~ln2_hi_log~0 := 0.69313812256;~ln2_lo_log~0 := 9.0580006145E-6;~two25_log~0 := 3.3554432E7;~Lg1_log~0 := 0.66666668653;~Lg2_log~0 := 0.40000000596;~Lg3_log~0 := 0.28571429849;~Lg4_log~0 := 0.22222198546;~Lg5_log~0 := 0.1818357259;~Lg6_log~0 := 0.15313838422;~Lg7_log~0 := 0.1479819864;~zero_log~0 := 0.0; {41#true} is VALID [2022-02-20 16:44:40,469 INFO L290 TraceCheckUtils]: 1: Hoare triple {41#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret9#1, main_#t~ret10#1, main_#t~short11#1, main_~x~0#1, main_~res~0#1;main_~x~0#1 := 1.0;assume { :begin_inline___ieee754_logf } true;__ieee754_logf_#in~x#1 := main_~x~0#1;havoc __ieee754_logf_#res#1;havoc __ieee754_logf_#t~mem4#1, __ieee754_logf_~#gf_u~0#1.base, __ieee754_logf_~#gf_u~0#1.offset, __ieee754_logf_#t~mem5#1, __ieee754_logf_~#gf_u~1#1.base, __ieee754_logf_~#gf_u~1#1.offset, __ieee754_logf_#t~mem7#1, __ieee754_logf_~#sf_u~0#1.base, __ieee754_logf_~#sf_u~0#1.offset, __ieee754_logf_~x#1, __ieee754_logf_~hfsq~0#1, __ieee754_logf_~f~0#1, __ieee754_logf_~s~0#1, __ieee754_logf_~z~0#1, __ieee754_logf_~R~0#1, __ieee754_logf_~w~0#1, __ieee754_logf_~t1~0#1, __ieee754_logf_~t2~0#1, __ieee754_logf_~dk~0#1, __ieee754_logf_~k~0#1, __ieee754_logf_~ix~0#1, __ieee754_logf_~i~0#1, __ieee754_logf_~j~0#1, __ieee754_logf_#t~nondet6#1;__ieee754_logf_~x#1 := __ieee754_logf_#in~x#1;havoc __ieee754_logf_~hfsq~0#1;havoc __ieee754_logf_~f~0#1;havoc __ieee754_logf_~s~0#1;havoc __ieee754_logf_~z~0#1;havoc __ieee754_logf_~R~0#1;havoc __ieee754_logf_~w~0#1;havoc __ieee754_logf_~t1~0#1;havoc __ieee754_logf_~t2~0#1;havoc __ieee754_logf_~dk~0#1;havoc __ieee754_logf_~k~0#1;havoc __ieee754_logf_~ix~0#1;havoc __ieee754_logf_~i~0#1;havoc __ieee754_logf_~j~0#1; {41#true} is VALID [2022-02-20 16:44:40,470 INFO L290 TraceCheckUtils]: 2: Hoare triple {41#true} assume !true; {42#false} is VALID [2022-02-20 16:44:40,470 INFO L290 TraceCheckUtils]: 3: Hoare triple {42#false} __ieee754_logf_~k~0#1 := 0; {42#false} is VALID [2022-02-20 16:44:40,471 INFO L290 TraceCheckUtils]: 4: Hoare triple {42#false} assume 0 == (if 0 == __ieee754_logf_~ix~0#1 then 0 else (if 1 == __ieee754_logf_~ix~0#1 then 1 else ~bitwiseAnd(__ieee754_logf_~ix~0#1, 2147483647)));__ieee754_logf_#res#1 := ~someBinaryArithmeticFLOAToperation(~someUnaryFLOAToperation(~two25_log~0), ~zero_log~0); {42#false} is VALID [2022-02-20 16:44:40,471 INFO L290 TraceCheckUtils]: 5: Hoare triple {42#false} main_#t~ret9#1 := __ieee754_logf_#res#1;assume { :end_inline___ieee754_logf } true;main_~res~0#1 := main_#t~ret9#1;havoc main_#t~ret9#1;main_#t~short11#1 := ~someBinaryFLOATComparisonOperation(main_~res~0#1, 0.0); {42#false} is VALID [2022-02-20 16:44:40,471 INFO L290 TraceCheckUtils]: 6: Hoare triple {42#false} assume !main_#t~short11#1; {42#false} is VALID [2022-02-20 16:44:40,471 INFO L290 TraceCheckUtils]: 7: Hoare triple {42#false} assume !main_#t~short11#1;havoc main_#t~ret10#1;havoc main_#t~short11#1; {42#false} is VALID [2022-02-20 16:44:40,472 INFO L290 TraceCheckUtils]: 8: Hoare triple {42#false} assume !false; {42#false} is VALID [2022-02-20 16:44:40,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 16:44:40,473 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 16:44:40,473 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235029758] [2022-02-20 16:44:40,474 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235029758] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 16:44:40,474 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 16:44:40,474 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-20 16:44:40,476 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608938050] [2022-02-20 16:44:40,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 16:44:40,479 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-02-20 16:44:40,481 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 16:44:40,483 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-02-20 16:44:40,498 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 9 edges. 9 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 16:44:40,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-20 16:44:40,499 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 16:44:40,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-20 16:44:40,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 16:44:40,520 INFO L87 Difference]: Start difference. First operand has 38 states, 36 states have (on average 1.7222222222222223) internal successors, (62), 37 states have internal predecessors, (62), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-02-20 16:44:40,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:44:40,587 INFO L93 Difference]: Finished difference Result 74 states and 122 transitions. [2022-02-20 16:44:40,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 16:44:40,587 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-02-20 16:44:40,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 16:44:40,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-02-20 16:44:40,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 122 transitions. [2022-02-20 16:44:40,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-02-20 16:44:40,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 122 transitions. [2022-02-20 16:44:40,610 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 122 transitions. [2022-02-20 16:44:40,714 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 122 edges. 122 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 16:44:40,724 INFO L225 Difference]: With dead ends: 74 [2022-02-20 16:44:40,725 INFO L226 Difference]: Without dead ends: 35 [2022-02-20 16:44:40,727 INFO L932 BasicCegarLoop]: 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 [2022-02-20 16:44:40,729 INFO L933 BasicCegarLoop]: 51 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, 51 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 [2022-02-20 16:44:40,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-20 16:44:40,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-02-20 16:44:40,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-02-20 16:44:40,751 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 16:44:40,752 INFO L82 GeneralOperation]: Start isEquivalent. First operand 35 states. Second operand has 35 states, 34 states have (on average 1.411764705882353) internal successors, (48), 34 states have internal predecessors, (48), 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) [2022-02-20 16:44:40,753 INFO L74 IsIncluded]: Start isIncluded. First operand 35 states. Second operand has 35 states, 34 states have (on average 1.411764705882353) internal successors, (48), 34 states have internal predecessors, (48), 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) [2022-02-20 16:44:40,753 INFO L87 Difference]: Start difference. First operand 35 states. Second operand has 35 states, 34 states have (on average 1.411764705882353) internal successors, (48), 34 states have internal predecessors, (48), 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) [2022-02-20 16:44:40,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:44:40,758 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2022-02-20 16:44:40,758 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 48 transitions. [2022-02-20 16:44:40,759 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 16:44:40,759 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 16:44:40,759 INFO L74 IsIncluded]: Start isIncluded. First operand has 35 states, 34 states have (on average 1.411764705882353) internal successors, (48), 34 states have internal predecessors, (48), 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 35 states. [2022-02-20 16:44:40,761 INFO L87 Difference]: Start difference. First operand has 35 states, 34 states have (on average 1.411764705882353) internal successors, (48), 34 states have internal predecessors, (48), 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 35 states. [2022-02-20 16:44:40,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:44:40,763 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2022-02-20 16:44:40,764 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 48 transitions. [2022-02-20 16:44:40,764 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 16:44:40,764 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 16:44:40,764 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 16:44:40,764 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 16:44:40,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.411764705882353) internal successors, (48), 34 states have internal predecessors, (48), 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) [2022-02-20 16:44:40,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 48 transitions. [2022-02-20 16:44:40,767 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 48 transitions. Word has length 9 [2022-02-20 16:44:40,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 16:44:40,767 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 48 transitions. [2022-02-20 16:44:40,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-02-20 16:44:40,767 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 48 transitions. [2022-02-20 16:44:40,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-02-20 16:44:40,768 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 16:44:40,768 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 16:44:40,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-20 16:44:40,770 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 16:44:40,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 16:44:40,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1484880575, now seen corresponding path program 1 times [2022-02-20 16:44:40,774 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 16:44:40,774 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499400232] [2022-02-20 16:44:40,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 16:44:40,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 16:44:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 16:44:40,831 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-20 16:44:40,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 16:44:40,880 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-20 16:44:40,880 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-20 16:44:40,882 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-20 16:44:40,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-20 16:44:40,885 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-20 16:44:40,887 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 16:44:40,918 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-02-20 16:44:40,918 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-02-20 16:44:40,918 WARN L170 areAnnotationChecker]: L26-2 has no Hoare annotation [2022-02-20 16:44:40,918 WARN L170 areAnnotationChecker]: L26-2 has no Hoare annotation [2022-02-20 16:44:40,919 WARN L170 areAnnotationChecker]: L26-1 has no Hoare annotation [2022-02-20 16:44:40,919 WARN L170 areAnnotationChecker]: L26-1 has no Hoare annotation [2022-02-20 16:44:40,919 WARN L170 areAnnotationChecker]: L26-3 has no Hoare annotation [2022-02-20 16:44:40,919 WARN L170 areAnnotationChecker]: L33 has no Hoare annotation [2022-02-20 16:44:40,919 WARN L170 areAnnotationChecker]: L33 has no Hoare annotation [2022-02-20 16:44:40,919 WARN L170 areAnnotationChecker]: L96 has no Hoare annotation [2022-02-20 16:44:40,919 WARN L170 areAnnotationChecker]: L35 has no Hoare annotation [2022-02-20 16:44:40,920 WARN L170 areAnnotationChecker]: L35 has no Hoare annotation [2022-02-20 16:44:40,920 WARN L170 areAnnotationChecker]: L122 has no Hoare annotation [2022-02-20 16:44:40,920 WARN L170 areAnnotationChecker]: L122 has no Hoare annotation [2022-02-20 16:44:40,920 WARN L170 areAnnotationChecker]: L37 has no Hoare annotation [2022-02-20 16:44:40,920 WARN L170 areAnnotationChecker]: L37 has no Hoare annotation [2022-02-20 16:44:40,920 WARN L170 areAnnotationChecker]: L103-2 has no Hoare annotation [2022-02-20 16:44:40,920 WARN L170 areAnnotationChecker]: L103-2 has no Hoare annotation [2022-02-20 16:44:40,920 WARN L170 areAnnotationChecker]: L122-2 has no Hoare annotation [2022-02-20 16:44:40,920 WARN L170 areAnnotationChecker]: L122-2 has no Hoare annotation [2022-02-20 16:44:40,921 WARN L170 areAnnotationChecker]: L39 has no Hoare annotation [2022-02-20 16:44:40,921 WARN L170 areAnnotationChecker]: L39 has no Hoare annotation [2022-02-20 16:44:40,921 WARN L170 areAnnotationChecker]: L103-1 has no Hoare annotation [2022-02-20 16:44:40,921 WARN L170 areAnnotationChecker]: L103-1 has no Hoare annotation [2022-02-20 16:44:40,921 WARN L170 areAnnotationChecker]: L103-3 has no Hoare annotation [2022-02-20 16:44:40,921 WARN L170 areAnnotationChecker]: L123 has no Hoare annotation [2022-02-20 16:44:40,921 WARN L170 areAnnotationChecker]: L123 has no Hoare annotation [2022-02-20 16:44:40,921 WARN L170 areAnnotationChecker]: L127 has no Hoare annotation [2022-02-20 16:44:40,922 WARN L170 areAnnotationChecker]: L42-2 has no Hoare annotation [2022-02-20 16:44:40,922 WARN L170 areAnnotationChecker]: L42-2 has no Hoare annotation [2022-02-20 16:44:40,922 WARN L170 areAnnotationChecker]: L39-1 has no Hoare annotation [2022-02-20 16:44:40,922 WARN L170 areAnnotationChecker]: L109 has no Hoare annotation [2022-02-20 16:44:40,922 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-02-20 16:44:40,922 WARN L170 areAnnotationChecker]: L42-1 has no Hoare annotation [2022-02-20 16:44:40,922 WARN L170 areAnnotationChecker]: L42-1 has no Hoare annotation [2022-02-20 16:44:40,922 WARN L170 areAnnotationChecker]: L50 has no Hoare annotation [2022-02-20 16:44:40,922 WARN L170 areAnnotationChecker]: L50 has no Hoare annotation [2022-02-20 16:44:40,923 WARN L170 areAnnotationChecker]: L51-1 has no Hoare annotation [2022-02-20 16:44:40,923 WARN L170 areAnnotationChecker]: L51-1 has no Hoare annotation [2022-02-20 16:44:40,923 WARN L170 areAnnotationChecker]: L50-2 has no Hoare annotation [2022-02-20 16:44:40,923 WARN L170 areAnnotationChecker]: L50-2 has no Hoare annotation [2022-02-20 16:44:40,923 WARN L170 areAnnotationChecker]: L51 has no Hoare annotation [2022-02-20 16:44:40,923 WARN L170 areAnnotationChecker]: L51 has no Hoare annotation [2022-02-20 16:44:40,923 WARN L170 areAnnotationChecker]: L51-2 has no Hoare annotation [2022-02-20 16:44:40,923 WARN L170 areAnnotationChecker]: L50-4 has no Hoare annotation [2022-02-20 16:44:40,923 WARN L170 areAnnotationChecker]: L50-4 has no Hoare annotation [2022-02-20 16:44:40,924 WARN L170 areAnnotationChecker]: L58 has no Hoare annotation [2022-02-20 16:44:40,924 WARN L170 areAnnotationChecker]: L58 has no Hoare annotation [2022-02-20 16:44:40,924 WARN L170 areAnnotationChecker]: L50-6 has no Hoare annotation [2022-02-20 16:44:40,924 WARN L170 areAnnotationChecker]: L50-6 has no Hoare annotation [2022-02-20 16:44:40,924 WARN L170 areAnnotationChecker]: L59 has no Hoare annotation [2022-02-20 16:44:40,925 WARN L170 areAnnotationChecker]: L59 has no Hoare annotation [2022-02-20 16:44:40,925 WARN L170 areAnnotationChecker]: L85 has no Hoare annotation [2022-02-20 16:44:40,925 WARN L170 areAnnotationChecker]: L85 has no Hoare annotation [2022-02-20 16:44:40,925 WARN L170 areAnnotationChecker]: L60 has no Hoare annotation [2022-02-20 16:44:40,926 WARN L170 areAnnotationChecker]: L60 has no Hoare annotation [2022-02-20 16:44:40,926 WARN L170 areAnnotationChecker]: L68 has no Hoare annotation [2022-02-20 16:44:40,926 WARN L170 areAnnotationChecker]: L68 has no Hoare annotation [2022-02-20 16:44:40,927 WARN L170 areAnnotationChecker]: L87 has no Hoare annotation [2022-02-20 16:44:40,927 WARN L170 areAnnotationChecker]: L87 has no Hoare annotation [2022-02-20 16:44:40,927 WARN L170 areAnnotationChecker]: L93 has no Hoare annotation [2022-02-20 16:44:40,927 WARN L170 areAnnotationChecker]: L93 has no Hoare annotation [2022-02-20 16:44:40,927 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-02-20 16:44:40,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.02 04:44:40 BoogieIcfgContainer [2022-02-20 16:44:40,928 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-20 16:44:40,929 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-02-20 16:44:40,929 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-02-20 16:44:40,930 INFO L275 PluginConnector]: Witness Printer initialized [2022-02-20 16:44:40,930 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:44:40" (3/4) ... [2022-02-20 16:44:40,932 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-02-20 16:44:40,932 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-02-20 16:44:40,933 INFO L158 Benchmark]: Toolchain (without parser) took 1344.34ms. Allocated memory is still 111.1MB. Free memory was 78.7MB in the beginning and 80.2MB in the end (delta: -1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:44:40,934 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 86.0MB. Free memory was 48.7MB in the beginning and 48.6MB in the end (delta: 49.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:44:40,934 INFO L158 Benchmark]: CACSL2BoogieTranslator took 256.49ms. Allocated memory is still 111.1MB. Free memory was 78.5MB in the beginning and 83.6MB in the end (delta: -5.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-02-20 16:44:40,934 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.13ms. Allocated memory is still 111.1MB. Free memory was 83.6MB in the beginning and 80.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-20 16:44:40,935 INFO L158 Benchmark]: Boogie Preprocessor took 31.46ms. Allocated memory is still 111.1MB. Free memory was 80.8MB in the beginning and 79.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-20 16:44:40,935 INFO L158 Benchmark]: RCFGBuilder took 385.89ms. Allocated memory is still 111.1MB. Free memory was 79.0MB in the beginning and 60.8MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-02-20 16:44:40,935 INFO L158 Benchmark]: TraceAbstraction took 625.84ms. Allocated memory is still 111.1MB. Free memory was 60.5MB in the beginning and 80.2MB in the end (delta: -19.7MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2022-02-20 16:44:40,936 INFO L158 Benchmark]: Witness Printer took 3.08ms. Allocated memory is still 111.1MB. Free memory is still 80.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:44:40,938 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 86.0MB. Free memory was 48.7MB in the beginning and 48.6MB in the end (delta: 49.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 256.49ms. Allocated memory is still 111.1MB. Free memory was 78.5MB in the beginning and 83.6MB in the end (delta: -5.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.13ms. Allocated memory is still 111.1MB. Free memory was 83.6MB in the beginning and 80.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.46ms. Allocated memory is still 111.1MB. Free memory was 80.8MB in the beginning and 79.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 385.89ms. Allocated memory is still 111.1MB. Free memory was 79.0MB in the beginning and 60.8MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 625.84ms. Allocated memory is still 111.1MB. Free memory was 60.5MB in the beginning and 80.2MB in the end (delta: -19.7MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. * Witness Printer took 3.08ms. Allocated memory is still 111.1MB. Free memory is still 80.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 123]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 122, overapproximation of someBinaryArithmeticFLOAToperation at line 34, overapproximation of bitwiseAnd at line 33. Possible FailurePath: [L14-L18] static const float ln2_hi_log = 6.9313812256e-01, ln2_lo_log = 9.0580006145e-06, two25_log = 3.355443200e+07, Lg1_log = 6.6666668653e-01, Lg2_log = 4.0000000596e-01, Lg3_log = 2.8571429849e-01, Lg4_log = 2.2222198546e-01, Lg5_log = 1.8183572590e-01, Lg6_log = 1.5313838422e-01, Lg7_log = 1.4798198640e-01; [L20] static const float zero_log = 0.0; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L118] float x = 1.0f; [L119] CALL, EXPR __ieee754_logf(x) [L23] float hfsq, f, s, z, R, w, t1, t2, dk; [L24] __int32_t k, ix, i, j; VAL [\old(x)=1, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=1, zero_log=0] [L27] ieee_float_shape_type gf_u; [L28] gf_u.value = (x) [L29] EXPR gf_u.word [L29] (ix) = gf_u.word [L32] k = 0 VAL [\old(x)=1, ix=-1, k=0, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=1, zero_log=0] [L33] COND TRUE ((ix & 0x7fffffff) == 0) [L34] return -two25_log / zero_log; VAL [\old(x)=1, ix=-1, k=0, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=1, zero_log=0] [L119] RET, EXPR __ieee754_logf(x) [L119] float res = __ieee754_logf(x); [L122] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, res=4294967296, res == 0.0f && __signbit_float(res) == 0=0, two25_log=33554432, x=1, zero_log=0] [L122] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L123] reach_error() VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, res=4294967296, two25_log=33554432, x=1, zero_log=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 51 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, 51 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=38occurred 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, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 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 [2022-02-20 16:44:40,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -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_0930.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.graphml --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 d0cec7ddb8a2645a0ba1656999ba73d1a21b29e3fbe1129f436b67dd30c2f050 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 16:44:42,494 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 16:44:42,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 16:44:42,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 16:44:42,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 16:44:42,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 16:44:42,529 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 16:44:42,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 16:44:42,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 16:44:42,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 16:44:42,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 16:44:42,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 16:44:42,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 16:44:42,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 16:44:42,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 16:44:42,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 16:44:42,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 16:44:42,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 16:44:42,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 16:44:42,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 16:44:42,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 16:44:42,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 16:44:42,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 16:44:42,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 16:44:42,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 16:44:42,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 16:44:42,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 16:44:42,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 16:44:42,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 16:44:42,554 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 16:44:42,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 16:44:42,555 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 16:44:42,556 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 16:44:42,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 16:44:42,559 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 16:44:42,559 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 16:44:42,560 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 16:44:42,560 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 16:44:42,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 16:44:42,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 16:44:42,562 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 16:44:42,564 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-02-20 16:44:42,582 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 16:44:42,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 16:44:42,583 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 16:44:42,583 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 16:44:42,584 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 16:44:42,584 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 16:44:42,584 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 16:44:42,584 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 16:44:42,585 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 16:44:42,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 16:44:42,585 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 16:44:42,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 16:44:42,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 16:44:42,585 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 16:44:42,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 16:44:42,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 16:44:42,586 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-02-20 16:44:42,586 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-02-20 16:44:42,586 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-02-20 16:44:42,586 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 16:44:42,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 16:44:42,587 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 16:44:42,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 16:44:42,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 16:44:42,588 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 16:44:42,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 16:44:42,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:44:42,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 16:44:42,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 16:44:42,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 16:44:42,589 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-02-20 16:44:42,589 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-02-20 16:44:42,590 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 16:44:42,590 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 16:44:42,590 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 16:44:42,590 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-02-20 16:44:42,591 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d0cec7ddb8a2645a0ba1656999ba73d1a21b29e3fbe1129f436b67dd30c2f050 [2022-02-20 16:44:42,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 16:44:42,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 16:44:42,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 16:44:42,870 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 16:44:42,871 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 16:44:42,872 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0930.c [2022-02-20 16:44:42,917 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce87678e2/46831d2a371149578f0d4c059fcef0cd/FLAGf7b0530a5 [2022-02-20 16:44:43,307 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 16:44:43,307 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0930.c [2022-02-20 16:44:43,312 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce87678e2/46831d2a371149578f0d4c059fcef0cd/FLAGf7b0530a5 [2022-02-20 16:44:43,320 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce87678e2/46831d2a371149578f0d4c059fcef0cd [2022-02-20 16:44:43,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 16:44:43,322 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 16:44:43,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 16:44:43,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 16:44:43,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 16:44:43,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:44:43" (1/1) ... [2022-02-20 16:44:43,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79e76161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:43, skipping insertion in model container [2022-02-20 16:44:43,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:44:43" (1/1) ... [2022-02-20 16:44:43,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 16:44:43,354 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 16:44:43,464 WARN L230 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_0930.c[3104,3117] [2022-02-20 16:44:43,466 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:44:43,507 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 16:44:43,531 WARN L230 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_0930.c[3104,3117] [2022-02-20 16:44:43,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:44:43,549 INFO L208 MainTranslator]: Completed translation [2022-02-20 16:44:43,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:43 WrapperNode [2022-02-20 16:44:43,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 16:44:43,564 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 16:44:43,564 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 16:44:43,565 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 16:44:43,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:43" (1/1) ... [2022-02-20 16:44:43,576 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:43" (1/1) ... [2022-02-20 16:44:43,607 INFO L137 Inliner]: procedures = 20, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 157 [2022-02-20 16:44:43,607 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 16:44:43,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 16:44:43,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 16:44:43,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 16:44:43,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:43" (1/1) ... [2022-02-20 16:44:43,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:43" (1/1) ... [2022-02-20 16:44:43,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:43" (1/1) ... [2022-02-20 16:44:43,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:43" (1/1) ... [2022-02-20 16:44:43,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:43" (1/1) ... [2022-02-20 16:44:43,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:43" (1/1) ... [2022-02-20 16:44:43,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:43" (1/1) ... [2022-02-20 16:44:43,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 16:44:43,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 16:44:43,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 16:44:43,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 16:44:43,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:43" (1/1) ... [2022-02-20 16:44:43,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:44:43,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 16:44:43,680 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-20 16:44:43,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-20 16:44:43,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 16:44:43,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-02-20 16:44:43,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-20 16:44:43,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2022-02-20 16:44:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-02-20 16:44:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 16:44:43,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 16:44:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-02-20 16:44:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-02-20 16:44:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-20 16:44:43,811 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 16:44:43,812 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 16:44:58,380 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 16:44:58,385 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 16:44:58,385 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-02-20 16:44:58,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:44:58 BoogieIcfgContainer [2022-02-20 16:44:58,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 16:44:58,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 16:44:58,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 16:44:58,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 16:44:58,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 04:44:43" (1/3) ... [2022-02-20 16:44:58,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1520406b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:44:58, skipping insertion in model container [2022-02-20 16:44:58,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:43" (2/3) ... [2022-02-20 16:44:58,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1520406b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:44:58, skipping insertion in model container [2022-02-20 16:44:58,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:44:58" (3/3) ... [2022-02-20 16:44:58,392 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0930.c [2022-02-20 16:44:58,395 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 16:44:58,395 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 16:44:58,422 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 16:44:58,426 INFO L339 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2022-02-20 16:44:58,426 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-20 16:44:58,436 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.6875) internal successors, (54), 33 states have internal predecessors, (54), 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) [2022-02-20 16:44:58,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-02-20 16:44:58,439 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 16:44:58,439 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 16:44:58,440 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 16:44:58,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 16:44:58,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1904085918, now seen corresponding path program 1 times [2022-02-20 16:44:58,451 INFO L126 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-02-20 16:44:58,452 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1143126436] [2022-02-20 16:44:58,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 16:44:58,452 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-02-20 16:44:58,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-02-20 16:44:58,453 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-02-20 16:44:58,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-02-20 16:44:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 16:44:58,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2022-02-20 16:44:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 16:44:58,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 16:44:58,933 INFO L290 TraceCheckUtils]: 0: Hoare triple {37#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0bv32, 0bv32;assume 0bv1 == #valid[0bv32];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;call #Ultimate.allocInit(2bv32, 1bv32);call write~init~intINTTYPE1(48bv8, 1bv32, 0bv32, 1bv32);call write~init~intINTTYPE1(0bv8, 1bv32, 1bv32, 1bv32);call #Ultimate.allocInit(20bv32, 2bv32);call #Ultimate.allocInit(12bv32, 3bv32);~ln2_hi_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 0.69313812256));~ln2_lo_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 9.0580006145E-6));~two25_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 3.3554432E7));~Lg1_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 0.66666668653));~Lg2_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 0.40000000596));~Lg3_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 0.28571429849));~Lg4_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 0.22222198546));~Lg5_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 0.1818357259));~Lg6_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 0.15313838422));~Lg7_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 0.1479819864));~zero_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~Pluszero~DOUBLE()); {37#true} is VALID [2022-02-20 16:44:58,934 INFO L290 TraceCheckUtils]: 1: Hoare triple {37#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_#t~ret9#1, main_#t~short10#1, main_~x~0#1, main_~res~0#1;main_~x~0#1 := ~to_fp~FLOAT(currentRoundingMode, 1.0);assume { :begin_inline___ieee754_logf } true;__ieee754_logf_#in~x#1 := main_~x~0#1;havoc __ieee754_logf_#res#1;havoc __ieee754_logf_#t~mem4#1, __ieee754_logf_~#gf_u~0#1.base, __ieee754_logf_~#gf_u~0#1.offset, __ieee754_logf_#t~mem5#1, __ieee754_logf_~#gf_u~1#1.base, __ieee754_logf_~#gf_u~1#1.offset, __ieee754_logf_#t~mem6#1, __ieee754_logf_~#sf_u~0#1.base, __ieee754_logf_~#sf_u~0#1.offset, __ieee754_logf_~x#1, __ieee754_logf_~hfsq~0#1, __ieee754_logf_~f~0#1, __ieee754_logf_~s~0#1, __ieee754_logf_~z~0#1, __ieee754_logf_~R~0#1, __ieee754_logf_~w~0#1, __ieee754_logf_~t1~0#1, __ieee754_logf_~t2~0#1, __ieee754_logf_~dk~0#1, __ieee754_logf_~k~0#1, __ieee754_logf_~ix~0#1, __ieee754_logf_~i~0#1, __ieee754_logf_~j~0#1;__ieee754_logf_~x#1 := __ieee754_logf_#in~x#1;havoc __ieee754_logf_~hfsq~0#1;havoc __ieee754_logf_~f~0#1;havoc __ieee754_logf_~s~0#1;havoc __ieee754_logf_~z~0#1;havoc __ieee754_logf_~R~0#1;havoc __ieee754_logf_~w~0#1;havoc __ieee754_logf_~t1~0#1;havoc __ieee754_logf_~t2~0#1;havoc __ieee754_logf_~dk~0#1;havoc __ieee754_logf_~k~0#1;havoc __ieee754_logf_~ix~0#1;havoc __ieee754_logf_~i~0#1;havoc __ieee754_logf_~j~0#1; {37#true} is VALID [2022-02-20 16:44:58,934 INFO L290 TraceCheckUtils]: 2: Hoare triple {37#true} assume !true; {38#false} is VALID [2022-02-20 16:44:58,935 INFO L290 TraceCheckUtils]: 3: Hoare triple {38#false} __ieee754_logf_~k~0#1 := 0bv32; {38#false} is VALID [2022-02-20 16:44:58,935 INFO L290 TraceCheckUtils]: 4: Hoare triple {38#false} assume 0bv32 == ~bvand32(2147483647bv32, __ieee754_logf_~ix~0#1);__ieee754_logf_#res#1 := ~fp.div~FLOAT(currentRoundingMode, ~fp.neg~FLOAT(~two25_log~0), ~zero_log~0); {38#false} is VALID [2022-02-20 16:44:58,935 INFO L290 TraceCheckUtils]: 5: Hoare triple {38#false} main_#t~ret8#1 := __ieee754_logf_#res#1;assume { :end_inline___ieee754_logf } true;main_~res~0#1 := main_#t~ret8#1;havoc main_#t~ret8#1;main_#t~short10#1 := ~fp.eq~FLOAT(main_~res~0#1, ~Pluszero~FLOAT()); {38#false} is VALID [2022-02-20 16:44:58,935 INFO L290 TraceCheckUtils]: 6: Hoare triple {38#false} assume !main_#t~short10#1; {38#false} is VALID [2022-02-20 16:44:58,936 INFO L290 TraceCheckUtils]: 7: Hoare triple {38#false} assume !main_#t~short10#1;havoc main_#t~ret9#1;havoc main_#t~short10#1; {38#false} is VALID [2022-02-20 16:44:58,940 INFO L290 TraceCheckUtils]: 8: Hoare triple {38#false} assume !false; {38#false} is VALID [2022-02-20 16:44:58,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 16:44:58,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-20 16:44:58,942 INFO L144 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-02-20 16:44:58,942 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1143126436] [2022-02-20 16:44:58,942 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1143126436] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 16:44:58,942 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 16:44:58,942 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-20 16:44:58,943 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789877748] [2022-02-20 16:44:58,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 16:44:58,947 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-02-20 16:44:58,948 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 16:44:58,949 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-02-20 16:44:59,066 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 9 edges. 9 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 16:44:59,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-20 16:44:59,066 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-02-20 16:44:59,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-20 16:44:59,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 16:44:59,087 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.6875) internal successors, (54), 33 states have internal predecessors, (54), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-02-20 16:45:14,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:45:14,873 INFO L93 Difference]: Finished difference Result 66 states and 106 transitions. [2022-02-20 16:45:14,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 16:45:14,874 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-02-20 16:45:14,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 16:45:14,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-02-20 16:45:14,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 106 transitions. [2022-02-20 16:45:14,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-02-20 16:45:14,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 106 transitions. [2022-02-20 16:45:14,885 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 106 transitions. [2022-02-20 16:45:17,840 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 106 edges. 106 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 16:45:17,846 INFO L225 Difference]: With dead ends: 66 [2022-02-20 16:45:17,846 INFO L226 Difference]: Without dead ends: 31 [2022-02-20 16:45:17,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 16:45:17,857 INFO L933 BasicCegarLoop]: 45 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, 45 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 [2022-02-20 16:45:17,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-20 16:45:17,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-02-20 16:45:17,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-02-20 16:45:17,877 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 16:45:17,877 INFO L82 GeneralOperation]: Start isEquivalent. First operand 31 states. Second operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 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) [2022-02-20 16:45:17,878 INFO L74 IsIncluded]: Start isIncluded. First operand 31 states. Second operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 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) [2022-02-20 16:45:17,878 INFO L87 Difference]: Start difference. First operand 31 states. Second operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 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) [2022-02-20 16:45:17,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:45:17,884 INFO L93 Difference]: Finished difference Result 31 states and 42 transitions. [2022-02-20 16:45:17,884 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2022-02-20 16:45:17,885 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 16:45:17,886 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 16:45:17,886 INFO L74 IsIncluded]: Start isIncluded. First operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 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 31 states. [2022-02-20 16:45:17,886 INFO L87 Difference]: Start difference. First operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 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 31 states. [2022-02-20 16:45:17,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:45:17,891 INFO L93 Difference]: Finished difference Result 31 states and 42 transitions. [2022-02-20 16:45:17,891 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2022-02-20 16:45:17,891 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 16:45:17,891 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 16:45:17,891 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 16:45:17,892 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 16:45:17,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 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) [2022-02-20 16:45:17,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2022-02-20 16:45:17,895 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 9 [2022-02-20 16:45:17,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 16:45:17,895 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2022-02-20 16:45:17,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-02-20 16:45:17,895 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2022-02-20 16:45:17,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-02-20 16:45:17,895 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 16:45:17,896 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 16:45:17,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-02-20 16:45:18,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-02-20 16:45:18,097 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 16:45:18,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 16:45:18,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1484264895, now seen corresponding path program 1 times [2022-02-20 16:45:18,098 INFO L126 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-02-20 16:45:18,098 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675862408] [2022-02-20 16:45:18,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 16:45:18,099 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-02-20 16:45:18,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-02-20 16:45:18,100 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-02-20 16:45:18,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-02-20 16:45:18,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 16:45:18,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-20 16:45:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 16:45:18,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 16:45:18,738 INFO L290 TraceCheckUtils]: 0: Hoare triple {244#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0bv32, 0bv32;assume 0bv1 == #valid[0bv32];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;call #Ultimate.allocInit(2bv32, 1bv32);call write~init~intINTTYPE1(48bv8, 1bv32, 0bv32, 1bv32);call write~init~intINTTYPE1(0bv8, 1bv32, 1bv32, 1bv32);call #Ultimate.allocInit(20bv32, 2bv32);call #Ultimate.allocInit(12bv32, 3bv32);~ln2_hi_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 0.69313812256));~ln2_lo_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 9.0580006145E-6));~two25_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 3.3554432E7));~Lg1_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 0.66666668653));~Lg2_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 0.40000000596));~Lg3_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 0.28571429849));~Lg4_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 0.22222198546));~Lg5_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 0.1818357259));~Lg6_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 0.15313838422));~Lg7_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 0.1479819864));~zero_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~Pluszero~DOUBLE()); {244#true} is VALID [2022-02-20 16:45:18,740 INFO L290 TraceCheckUtils]: 1: Hoare triple {244#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_#t~ret9#1, main_#t~short10#1, main_~x~0#1, main_~res~0#1;main_~x~0#1 := ~to_fp~FLOAT(currentRoundingMode, 1.0);assume { :begin_inline___ieee754_logf } true;__ieee754_logf_#in~x#1 := main_~x~0#1;havoc __ieee754_logf_#res#1;havoc __ieee754_logf_#t~mem4#1, __ieee754_logf_~#gf_u~0#1.base, __ieee754_logf_~#gf_u~0#1.offset, __ieee754_logf_#t~mem5#1, __ieee754_logf_~#gf_u~1#1.base, __ieee754_logf_~#gf_u~1#1.offset, __ieee754_logf_#t~mem6#1, __ieee754_logf_~#sf_u~0#1.base, __ieee754_logf_~#sf_u~0#1.offset, __ieee754_logf_~x#1, __ieee754_logf_~hfsq~0#1, __ieee754_logf_~f~0#1, __ieee754_logf_~s~0#1, __ieee754_logf_~z~0#1, __ieee754_logf_~R~0#1, __ieee754_logf_~w~0#1, __ieee754_logf_~t1~0#1, __ieee754_logf_~t2~0#1, __ieee754_logf_~dk~0#1, __ieee754_logf_~k~0#1, __ieee754_logf_~ix~0#1, __ieee754_logf_~i~0#1, __ieee754_logf_~j~0#1;__ieee754_logf_~x#1 := __ieee754_logf_#in~x#1;havoc __ieee754_logf_~hfsq~0#1;havoc __ieee754_logf_~f~0#1;havoc __ieee754_logf_~s~0#1;havoc __ieee754_logf_~z~0#1;havoc __ieee754_logf_~R~0#1;havoc __ieee754_logf_~w~0#1;havoc __ieee754_logf_~t1~0#1;havoc __ieee754_logf_~t2~0#1;havoc __ieee754_logf_~dk~0#1;havoc __ieee754_logf_~k~0#1;havoc __ieee754_logf_~ix~0#1;havoc __ieee754_logf_~i~0#1;havoc __ieee754_logf_~j~0#1; {252#(exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start___ieee754_logf_~x#1| ((_ to_fp 8 24) currentRoundingMode 1.0)))} is VALID [2022-02-20 16:45:18,742 INFO L290 TraceCheckUtils]: 2: Hoare triple {252#(exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start___ieee754_logf_~x#1| ((_ to_fp 8 24) currentRoundingMode 1.0)))} call __ieee754_logf_~#gf_u~0#1.base, __ieee754_logf_~#gf_u~0#1.offset := #Ultimate.allocOnStack(4bv32);call write~intFLOATTYPE4(__ieee754_logf_~x#1, __ieee754_logf_~#gf_u~0#1.base, __ieee754_logf_~#gf_u~0#1.offset, 4bv32);call __ieee754_logf_#t~mem4#1 := read~intINTTYPE4(__ieee754_logf_~#gf_u~0#1.base, __ieee754_logf_~#gf_u~0#1.offset, 4bv32);__ieee754_logf_~ix~0#1 := __ieee754_logf_#t~mem4#1;havoc __ieee754_logf_#t~mem4#1;call ULTIMATE.dealloc(__ieee754_logf_~#gf_u~0#1.base, __ieee754_logf_~#gf_u~0#1.offset);havoc __ieee754_logf_~#gf_u~0#1.base, __ieee754_logf_~#gf_u~0#1.offset; {256#(exists ((currentRoundingMode RoundingMode)) (= ((_ to_fp 8 24) currentRoundingMode 1.0) (fp ((_ extract 31 31) |ULTIMATE.start___ieee754_logf_~ix~0#1|) ((_ extract 30 23) |ULTIMATE.start___ieee754_logf_~ix~0#1|) ((_ extract 22 0) |ULTIMATE.start___ieee754_logf_~ix~0#1|))))} is VALID [2022-02-20 16:45:18,743 INFO L290 TraceCheckUtils]: 3: Hoare triple {256#(exists ((currentRoundingMode RoundingMode)) (= ((_ to_fp 8 24) currentRoundingMode 1.0) (fp ((_ extract 31 31) |ULTIMATE.start___ieee754_logf_~ix~0#1|) ((_ extract 30 23) |ULTIMATE.start___ieee754_logf_~ix~0#1|) ((_ extract 22 0) |ULTIMATE.start___ieee754_logf_~ix~0#1|))))} goto; {256#(exists ((currentRoundingMode RoundingMode)) (= ((_ to_fp 8 24) currentRoundingMode 1.0) (fp ((_ extract 31 31) |ULTIMATE.start___ieee754_logf_~ix~0#1|) ((_ extract 30 23) |ULTIMATE.start___ieee754_logf_~ix~0#1|) ((_ extract 22 0) |ULTIMATE.start___ieee754_logf_~ix~0#1|))))} is VALID [2022-02-20 16:45:18,744 INFO L290 TraceCheckUtils]: 4: Hoare triple {256#(exists ((currentRoundingMode RoundingMode)) (= ((_ to_fp 8 24) currentRoundingMode 1.0) (fp ((_ extract 31 31) |ULTIMATE.start___ieee754_logf_~ix~0#1|) ((_ extract 30 23) |ULTIMATE.start___ieee754_logf_~ix~0#1|) ((_ extract 22 0) |ULTIMATE.start___ieee754_logf_~ix~0#1|))))} __ieee754_logf_~k~0#1 := 0bv32; {256#(exists ((currentRoundingMode RoundingMode)) (= ((_ to_fp 8 24) currentRoundingMode 1.0) (fp ((_ extract 31 31) |ULTIMATE.start___ieee754_logf_~ix~0#1|) ((_ extract 30 23) |ULTIMATE.start___ieee754_logf_~ix~0#1|) ((_ extract 22 0) |ULTIMATE.start___ieee754_logf_~ix~0#1|))))} is VALID [2022-02-20 16:45:18,855 INFO L290 TraceCheckUtils]: 5: Hoare triple {256#(exists ((currentRoundingMode RoundingMode)) (= ((_ to_fp 8 24) currentRoundingMode 1.0) (fp ((_ extract 31 31) |ULTIMATE.start___ieee754_logf_~ix~0#1|) ((_ extract 30 23) |ULTIMATE.start___ieee754_logf_~ix~0#1|) ((_ extract 22 0) |ULTIMATE.start___ieee754_logf_~ix~0#1|))))} assume 0bv32 == ~bvand32(2147483647bv32, __ieee754_logf_~ix~0#1);__ieee754_logf_#res#1 := ~fp.div~FLOAT(currentRoundingMode, ~fp.neg~FLOAT(~two25_log~0), ~zero_log~0); {245#false} is VALID [2022-02-20 16:45:18,855 INFO L290 TraceCheckUtils]: 6: Hoare triple {245#false} main_#t~ret8#1 := __ieee754_logf_#res#1;assume { :end_inline___ieee754_logf } true;main_~res~0#1 := main_#t~ret8#1;havoc main_#t~ret8#1;main_#t~short10#1 := ~fp.eq~FLOAT(main_~res~0#1, ~Pluszero~FLOAT()); {245#false} is VALID [2022-02-20 16:45:18,856 INFO L290 TraceCheckUtils]: 7: Hoare triple {245#false} assume !main_#t~short10#1; {245#false} is VALID [2022-02-20 16:45:18,856 INFO L290 TraceCheckUtils]: 8: Hoare triple {245#false} assume !main_#t~short10#1;havoc main_#t~ret9#1;havoc main_#t~short10#1; {245#false} is VALID [2022-02-20 16:45:18,856 INFO L290 TraceCheckUtils]: 9: Hoare triple {245#false} assume !false; {245#false} is VALID [2022-02-20 16:45:18,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 16:45:18,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-20 16:45:18,856 INFO L144 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-02-20 16:45:18,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675862408] [2022-02-20 16:45:18,857 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleMathsat [675862408] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 16:45:18,857 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 16:45:18,857 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-20 16:45:18,857 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317987323] [2022-02-20 16:45:18,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 16:45:18,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-02-20 16:45:18,858 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 16:45:18,858 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:45:18,992 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 16:45:18,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-20 16:45:18,992 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-02-20 16:45:18,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-20 16:45:18,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-20 16:45:18,993 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)