./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/addsub_float_inexact.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/addsub_float_inexact.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 724458914ec915bd8588c7b3947050b7176e90c12f1440cbedde17891f240f2d --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 14:06:15,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 14:06:15,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 14:06:15,865 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 14:06:15,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 14:06:15,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 14:06:15,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 14:06:15,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 14:06:15,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 14:06:15,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 14:06:15,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 14:06:15,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 14:06:15,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 14:06:15,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 14:06:15,884 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 14:06:15,885 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 14:06:15,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 14:06:15,887 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 14:06:15,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 14:06:15,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 14:06:15,895 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 14:06:15,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 14:06:15,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 14:06:15,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 14:06:15,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 14:06:15,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 14:06:15,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 14:06:15,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 14:06:15,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 14:06:15,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 14:06:15,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 14:06:15,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 14:06:15,909 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 14:06:15,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 14:06:15,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 14:06:15,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 14:06:15,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 14:06:15,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 14:06:15,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 14:06:15,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 14:06:15,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 14:06:15,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 14:06:15,915 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 14:06:15,941 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 14:06:15,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 14:06:15,941 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 14:06:15,942 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 14:06:15,942 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 14:06:15,942 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 14:06:15,943 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 14:06:15,943 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 14:06:15,943 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 14:06:15,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 14:06:15,944 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 14:06:15,944 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 14:06:15,944 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 14:06:15,944 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 14:06:15,944 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 14:06:15,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 14:06:15,945 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 14:06:15,945 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 14:06:15,945 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 14:06:15,945 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 14:06:15,945 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 14:06:15,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 14:06:15,946 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 14:06:15,946 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 14:06:15,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:06:15,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 14:06:15,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 14:06:15,946 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 14:06:15,947 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 14:06:15,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 14:06:15,947 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 14:06:15,947 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 14:06:15,947 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 14:06:15,947 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 724458914ec915bd8588c7b3947050b7176e90c12f1440cbedde17891f240f2d [2022-07-13 14:06:16,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 14:06:16,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 14:06:16,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 14:06:16,153 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 14:06:16,154 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 14:06:16,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/addsub_float_inexact.c [2022-07-13 14:06:16,200 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/323d06817/59b9d379cd0b450fb4cb64fc93acc474/FLAG847ec3168 [2022-07-13 14:06:16,508 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 14:06:16,509 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/addsub_float_inexact.c [2022-07-13 14:06:16,513 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/323d06817/59b9d379cd0b450fb4cb64fc93acc474/FLAG847ec3168 [2022-07-13 14:06:16,943 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/323d06817/59b9d379cd0b450fb4cb64fc93acc474 [2022-07-13 14:06:16,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 14:06:16,946 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 14:06:16,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 14:06:16,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 14:06:16,952 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 14:06:16,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:06:16" (1/1) ... [2022-07-13 14:06:16,953 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b7e089c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:16, skipping insertion in model container [2022-07-13 14:06:16,953 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:06:16" (1/1) ... [2022-07-13 14:06:16,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 14:06:16,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 14:06:17,105 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-benchs/addsub_float_inexact.c[394,407] [2022-07-13 14:06:17,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:06:17,122 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 14:06:17,138 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-benchs/addsub_float_inexact.c[394,407] [2022-07-13 14:06:17,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:06:17,149 INFO L208 MainTranslator]: Completed translation [2022-07-13 14:06:17,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:17 WrapperNode [2022-07-13 14:06:17,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 14:06:17,151 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 14:06:17,151 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 14:06:17,151 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 14:06:17,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:17" (1/1) ... [2022-07-13 14:06:17,162 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:17" (1/1) ... [2022-07-13 14:06:17,177 INFO L137 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2022-07-13 14:06:17,177 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 14:06:17,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 14:06:17,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 14:06:17,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 14:06:17,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:17" (1/1) ... [2022-07-13 14:06:17,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:17" (1/1) ... [2022-07-13 14:06:17,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:17" (1/1) ... [2022-07-13 14:06:17,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:17" (1/1) ... [2022-07-13 14:06:17,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:17" (1/1) ... [2022-07-13 14:06:17,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:17" (1/1) ... [2022-07-13 14:06:17,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:17" (1/1) ... [2022-07-13 14:06:17,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 14:06:17,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 14:06:17,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 14:06:17,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 14:06:17,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:17" (1/1) ... [2022-07-13 14:06:17,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:06:17,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 14:06:17,225 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) [2022-07-13 14:06:17,228 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 [2022-07-13 14:06:17,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 14:06:17,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 14:06:17,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 14:06:17,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 14:06:17,299 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 14:06:17,300 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 14:06:17,348 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 14:06:17,352 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 14:06:17,352 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 14:06:17,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:06:17 BoogieIcfgContainer [2022-07-13 14:06:17,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 14:06:17,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 14:06:17,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 14:06:17,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 14:06:17,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:06:16" (1/3) ... [2022-07-13 14:06:17,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2384d079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:06:17, skipping insertion in model container [2022-07-13 14:06:17,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:17" (2/3) ... [2022-07-13 14:06:17,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2384d079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:06:17, skipping insertion in model container [2022-07-13 14:06:17,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:06:17" (3/3) ... [2022-07-13 14:06:17,359 INFO L111 eAbstractionObserver]: Analyzing ICFG addsub_float_inexact.c [2022-07-13 14:06:17,368 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 14:06:17,369 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 14:06:17,397 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 14:06:17,402 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6b4e5bb2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7e30fb38 [2022-07-13 14:06:17,402 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 14:06:17,405 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 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) [2022-07-13 14:06:17,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-07-13 14:06:17,409 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:06:17,409 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-07-13 14:06:17,410 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:06:17,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:06:17,413 INFO L85 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2022-07-13 14:06:17,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 14:06:17,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075950863] [2022-07-13 14:06:17,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:06:17,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 14:06:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 14:06:17,481 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 14:06:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 14:06:17,508 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 14:06:17,509 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 14:06:17,510 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 14:06:17,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 14:06:17,514 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-13 14:06:17,517 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 14:06:17,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 02:06:17 BoogieIcfgContainer [2022-07-13 14:06:17,528 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 14:06:17,529 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 14:06:17,529 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 14:06:17,529 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 14:06:17,529 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:06:17" (3/4) ... [2022-07-13 14:06:17,531 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-13 14:06:17,532 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 14:06:17,533 INFO L158 Benchmark]: Toolchain (without parser) took 585.84ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 44.0MB in the beginning and 74.2MB in the end (delta: -30.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:06:17,533 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 81.8MB. Free memory was 60.4MB in the beginning and 60.3MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:06:17,534 INFO L158 Benchmark]: CACSL2BoogieTranslator took 200.85ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 43.8MB in the beginning and 72.1MB in the end (delta: -28.3MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. [2022-07-13 14:06:17,534 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.33ms. Allocated memory is still 98.6MB. Free memory was 72.1MB in the beginning and 70.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 14:06:17,535 INFO L158 Benchmark]: Boogie Preprocessor took 20.53ms. Allocated memory is still 98.6MB. Free memory was 70.6MB in the beginning and 69.8MB in the end (delta: 773.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:06:17,535 INFO L158 Benchmark]: RCFGBuilder took 154.38ms. Allocated memory is still 98.6MB. Free memory was 69.7MB in the beginning and 61.4MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 14:06:17,535 INFO L158 Benchmark]: TraceAbstraction took 173.81ms. Allocated memory is still 98.6MB. Free memory was 60.8MB in the beginning and 74.2MB in the end (delta: -13.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:06:17,536 INFO L158 Benchmark]: Witness Printer took 2.87ms. Allocated memory is still 98.6MB. Free memory is still 74.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:06:17,538 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 81.8MB. Free memory was 60.4MB in the beginning and 60.3MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 200.85ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 43.8MB in the beginning and 72.1MB in the end (delta: -28.3MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.33ms. Allocated memory is still 98.6MB. Free memory was 72.1MB in the beginning and 70.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.53ms. Allocated memory is still 98.6MB. Free memory was 70.6MB in the beginning and 69.8MB in the end (delta: 773.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 154.38ms. Allocated memory is still 98.6MB. Free memory was 69.7MB in the beginning and 61.4MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 173.81ms. Allocated memory is still 98.6MB. Free memory was 60.8MB in the beginning and 74.2MB in the end (delta: -13.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.87ms. Allocated memory is still 98.6MB. Free memory is still 74.2MB. 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: 6]: 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 16, overapproximation of someBinaryArithmeticFLOAToperation at line 13. Possible FailurePath: [L10] float x, y, z, r; [L12] x = 1e8f [L13] y = x + 1.f [L14] z = x - 1.f [L15] r = y - z [L16] CALL __VERIFIER_assert(r == 0.f) [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-13 14:06:17,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/addsub_float_inexact.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 724458914ec915bd8588c7b3947050b7176e90c12f1440cbedde17891f240f2d --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 14:06:19,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 14:06:19,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 14:06:19,230 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 14:06:19,230 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 14:06:19,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 14:06:19,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 14:06:19,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 14:06:19,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 14:06:19,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 14:06:19,248 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 14:06:19,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 14:06:19,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 14:06:19,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 14:06:19,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 14:06:19,257 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 14:06:19,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 14:06:19,259 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 14:06:19,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 14:06:19,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 14:06:19,265 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 14:06:19,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 14:06:19,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 14:06:19,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 14:06:19,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 14:06:19,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 14:06:19,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 14:06:19,273 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 14:06:19,274 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 14:06:19,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 14:06:19,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 14:06:19,275 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 14:06:19,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 14:06:19,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 14:06:19,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 14:06:19,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 14:06:19,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 14:06:19,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 14:06:19,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 14:06:19,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 14:06:19,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 14:06:19,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 14:06:19,285 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-13 14:06:19,310 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 14:06:19,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 14:06:19,311 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 14:06:19,311 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 14:06:19,312 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 14:06:19,312 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 14:06:19,312 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 14:06:19,313 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 14:06:19,313 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 14:06:19,313 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 14:06:19,314 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 14:06:19,314 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 14:06:19,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 14:06:19,314 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 14:06:19,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 14:06:19,314 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 14:06:19,315 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-13 14:06:19,315 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-13 14:06:19,315 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-13 14:06:19,315 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 14:06:19,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 14:06:19,315 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 14:06:19,315 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 14:06:19,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 14:06:19,316 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 14:06:19,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 14:06:19,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:06:19,316 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 14:06:19,316 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 14:06:19,317 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 14:06:19,317 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-13 14:06:19,317 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-13 14:06:19,317 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 14:06:19,317 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 14:06:19,318 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 14:06:19,318 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-13 14:06:19,318 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 724458914ec915bd8588c7b3947050b7176e90c12f1440cbedde17891f240f2d [2022-07-13 14:06:19,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 14:06:19,553 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 14:06:19,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 14:06:19,556 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 14:06:19,557 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 14:06:19,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/addsub_float_inexact.c [2022-07-13 14:06:19,613 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ac445a0e/74a4cd6a501c4aeb9d9f8bb43b36e419/FLAG5af3c689a [2022-07-13 14:06:19,976 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 14:06:19,976 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/addsub_float_inexact.c [2022-07-13 14:06:19,980 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ac445a0e/74a4cd6a501c4aeb9d9f8bb43b36e419/FLAG5af3c689a [2022-07-13 14:06:19,991 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ac445a0e/74a4cd6a501c4aeb9d9f8bb43b36e419 [2022-07-13 14:06:19,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 14:06:19,995 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 14:06:19,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 14:06:19,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 14:06:20,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 14:06:20,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:06:19" (1/1) ... [2022-07-13 14:06:20,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a16ad7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:20, skipping insertion in model container [2022-07-13 14:06:20,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:06:19" (1/1) ... [2022-07-13 14:06:20,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 14:06:20,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 14:06:20,137 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-benchs/addsub_float_inexact.c[394,407] [2022-07-13 14:06:20,146 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:06:20,155 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 14:06:20,163 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-benchs/addsub_float_inexact.c[394,407] [2022-07-13 14:06:20,165 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:06:20,195 INFO L208 MainTranslator]: Completed translation [2022-07-13 14:06:20,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:20 WrapperNode [2022-07-13 14:06:20,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 14:06:20,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 14:06:20,197 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 14:06:20,197 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 14:06:20,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:20" (1/1) ... [2022-07-13 14:06:20,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:20" (1/1) ... [2022-07-13 14:06:20,220 INFO L137 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 28 [2022-07-13 14:06:20,222 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 14:06:20,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 14:06:20,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 14:06:20,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 14:06:20,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:20" (1/1) ... [2022-07-13 14:06:20,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:20" (1/1) ... [2022-07-13 14:06:20,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:20" (1/1) ... [2022-07-13 14:06:20,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:20" (1/1) ... [2022-07-13 14:06:20,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:20" (1/1) ... [2022-07-13 14:06:20,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:20" (1/1) ... [2022-07-13 14:06:20,235 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:20" (1/1) ... [2022-07-13 14:06:20,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 14:06:20,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 14:06:20,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 14:06:20,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 14:06:20,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:20" (1/1) ... [2022-07-13 14:06:20,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:06:20,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 14:06:20,260 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) [2022-07-13 14:06:20,285 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 [2022-07-13 14:06:20,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 14:06:20,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 14:06:20,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 14:06:20,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-13 14:06:20,338 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 14:06:20,340 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 14:06:20,532 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 14:06:20,535 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 14:06:20,535 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 14:06:20,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:06:20 BoogieIcfgContainer [2022-07-13 14:06:20,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 14:06:20,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 14:06:20,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 14:06:20,540 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 14:06:20,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:06:19" (1/3) ... [2022-07-13 14:06:20,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@553957d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:06:20, skipping insertion in model container [2022-07-13 14:06:20,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:06:20" (2/3) ... [2022-07-13 14:06:20,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@553957d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:06:20, skipping insertion in model container [2022-07-13 14:06:20,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:06:20" (3/3) ... [2022-07-13 14:06:20,542 INFO L111 eAbstractionObserver]: Analyzing ICFG addsub_float_inexact.c [2022-07-13 14:06:20,552 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 14:06:20,552 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 14:06:20,598 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 14:06:20,603 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@62c539fc, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@66e99387 [2022-07-13 14:06:20,603 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 14:06:20,606 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 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) [2022-07-13 14:06:20,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-07-13 14:06:20,623 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:06:20,624 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-07-13 14:06:20,624 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:06:20,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:06:20,628 INFO L85 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2022-07-13 14:06:20,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:06:20,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [311127732] [2022-07-13 14:06:20,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:06:20,636 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:06:20,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:06:20,639 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) [2022-07-13 14:06:20,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-13 14:06:20,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:06:20,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 14:06:20,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:06:20,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:06:20,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:06:20,879 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:06:20,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [311127732] [2022-07-13 14:06:20,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [311127732] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:06:20,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:06:20,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 14:06:20,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272703421] [2022-07-13 14:06:20,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:06:20,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 14:06:20,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:06:20,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 14:06:20,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 14:06:20,912 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 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) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-07-13 14:06:20,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:06:20,980 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2022-07-13 14:06:20,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 14:06:20,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-07-13 14:06:20,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:06:20,988 INFO L225 Difference]: With dead ends: 13 [2022-07-13 14:06:20,989 INFO L226 Difference]: Without dead ends: 0 [2022-07-13 14:06:20,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 14:06:20,993 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 9 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 14:06:20,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 5 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 14:06:21,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-13 14:06:21,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-13 14:06:21,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:06:21,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-13 14:06:21,008 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2022-07-13 14:06:21,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:06:21,009 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 14:06:21,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-07-13 14:06:21,009 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-13 14:06:21,009 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-13 14:06:21,011 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 14:06:21,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-13 14:06:21,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:06:21,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-13 14:06:21,245 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-13 14:06:21,245 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-13 14:06:21,245 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-13 14:06:21,246 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-13 14:06:21,246 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2022-07-13 14:06:21,246 INFO L895 garLoopResultBuilder]: At program point L17(lines 8 18) the Hoare annotation is: (and (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) (= currentRoundingMode roundNearestTiesToEven)) [2022-07-13 14:06:21,246 INFO L899 garLoopResultBuilder]: For program point L6(line 6) no Hoare annotation was computed. [2022-07-13 14:06:21,246 INFO L899 garLoopResultBuilder]: For program point L6-1(line 6) no Hoare annotation was computed. [2022-07-13 14:06:21,247 INFO L895 garLoopResultBuilder]: At program point L6-3(line 6) the Hoare annotation is: (and (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) (= currentRoundingMode roundNearestTiesToEven)) [2022-07-13 14:06:21,252 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-13 14:06:21,255 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 14:06:21,261 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-07-13 14:06:21,263 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-07-13 14:06:21,264 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-07-13 14:06:21,264 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-07-13 14:06:21,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 02:06:21 BoogieIcfgContainer [2022-07-13 14:06:21,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 14:06:21,265 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 14:06:21,265 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 14:06:21,265 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 14:06:21,265 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:06:20" (3/4) ... [2022-07-13 14:06:21,267 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-13 14:06:21,273 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-07-13 14:06:21,273 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-13 14:06:21,273 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-13 14:06:21,274 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-13 14:06:21,295 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 14:06:21,295 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 14:06:21,296 INFO L158 Benchmark]: Toolchain (without parser) took 1300.83ms. Allocated memory was 52.4MB in the beginning and 67.1MB in the end (delta: 14.7MB). Free memory was 29.8MB in the beginning and 31.6MB in the end (delta: -1.8MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2022-07-13 14:06:21,296 INFO L158 Benchmark]: CDTParser took 0.57ms. Allocated memory is still 52.4MB. Free memory was 33.5MB in the beginning and 33.4MB in the end (delta: 48.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:06:21,296 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.50ms. Allocated memory was 52.4MB in the beginning and 67.1MB in the end (delta: 14.7MB). Free memory was 29.6MB in the beginning and 50.9MB in the end (delta: -21.3MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2022-07-13 14:06:21,297 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.21ms. Allocated memory is still 67.1MB. Free memory was 50.7MB in the beginning and 49.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:06:21,297 INFO L158 Benchmark]: Boogie Preprocessor took 13.71ms. Allocated memory is still 67.1MB. Free memory was 49.3MB in the beginning and 48.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:06:21,297 INFO L158 Benchmark]: RCFGBuilder took 300.07ms. Allocated memory is still 67.1MB. Free memory was 48.1MB in the beginning and 40.3MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 14:06:21,298 INFO L158 Benchmark]: TraceAbstraction took 726.71ms. Allocated memory is still 67.1MB. Free memory was 39.9MB in the beginning and 34.0MB in the end (delta: 5.9MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2022-07-13 14:06:21,298 INFO L158 Benchmark]: Witness Printer took 30.09ms. Allocated memory is still 67.1MB. Free memory was 34.0MB in the beginning and 31.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 14:06:21,299 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57ms. Allocated memory is still 52.4MB. Free memory was 33.5MB in the beginning and 33.4MB in the end (delta: 48.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 199.50ms. Allocated memory was 52.4MB in the beginning and 67.1MB in the end (delta: 14.7MB). Free memory was 29.6MB in the beginning and 50.9MB in the end (delta: -21.3MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.21ms. Allocated memory is still 67.1MB. Free memory was 50.7MB in the beginning and 49.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 13.71ms. Allocated memory is still 67.1MB. Free memory was 49.3MB in the beginning and 48.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 300.07ms. Allocated memory is still 67.1MB. Free memory was 48.1MB in the beginning and 40.3MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 726.71ms. Allocated memory is still 67.1MB. Free memory was 39.9MB in the beginning and 34.0MB in the end (delta: 5.9MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. * Witness Printer took 30.09ms. Allocated memory is still 67.1MB. Free memory was 34.0MB in the beginning and 31.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 6]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 4 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 4, 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: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 14 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 6 NumberOfNonLiveVariables, 23 ConjunctsInSsa, 8 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 6]: Loop Invariant [2022-07-13 14:06:21,311 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-07-13 14:06:21,312 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: cond == 1bv32 && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 8]: Loop Invariant [2022-07-13 14:06:21,313 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-07-13 14:06:21,313 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: cond == 1bv32 && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven RESULT: Ultimate proved your program to be correct! [2022-07-13 14:06:21,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE