./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cbmc-regression/float22.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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/floats-cbmc-regression/float22.i -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 913adc451f82986f823cb502b614806ec5bc93f1 ......................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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/floats-cbmc-regression/float22.i -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 913adc451f82986f823cb502b614806ec5bc93f1 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 00:08:21,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 00:08:21,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 00:08:21,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 00:08:21,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 00:08:21,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 00:08:21,705 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 00:08:21,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 00:08:21,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 00:08:21,709 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 00:08:21,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 00:08:21,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 00:08:21,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 00:08:21,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 00:08:21,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 00:08:21,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 00:08:21,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 00:08:21,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 00:08:21,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 00:08:21,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 00:08:21,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 00:08:21,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 00:08:21,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 00:08:21,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 00:08:21,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 00:08:21,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 00:08:21,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 00:08:21,735 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 00:08:21,735 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 00:08:21,736 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 00:08:21,736 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 00:08:21,737 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 00:08:21,737 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 00:08:21,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 00:08:21,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 00:08:21,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 00:08:21,739 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 00:08:21,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 00:08:21,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 00:08:21,739 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 00:08:21,740 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 00:08:21,740 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 00:08:21,769 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 00:08:21,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 00:08:21,769 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 00:08:21,769 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 00:08:21,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 00:08:21,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 00:08:21,770 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 00:08:21,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 00:08:21,770 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 00:08:21,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 00:08:21,770 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 00:08:21,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 00:08:21,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 00:08:21,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 00:08:21,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 00:08:21,771 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 00:08:21,771 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 00:08:21,771 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 00:08:21,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 00:08:21,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 00:08:21,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 00:08:21,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 00:08:21,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 00:08:21,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 00:08:21,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 00:08:21,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 00:08:21,772 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 00:08:21,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 00:08:21,772 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 00:08:21,772 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 00:08:21,772 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 913adc451f82986f823cb502b614806ec5bc93f1 [2021-08-26 00:08:22,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 00:08:22,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 00:08:22,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 00:08:22,165 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 00:08:22,170 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 00:08:22,171 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float22.i [2021-08-26 00:08:22,214 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7205c317/f699c33032bc469492c442c3897f2596/FLAG8fef80ded [2021-08-26 00:08:22,612 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 00:08:22,626 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float22.i [2021-08-26 00:08:22,641 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7205c317/f699c33032bc469492c442c3897f2596/FLAG8fef80ded [2021-08-26 00:08:22,657 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7205c317/f699c33032bc469492c442c3897f2596 [2021-08-26 00:08:22,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 00:08:22,661 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 00:08:22,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 00:08:22,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 00:08:22,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 00:08:22,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:08:22" (1/1) ... [2021-08-26 00:08:22,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b49e856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:22, skipping insertion in model container [2021-08-26 00:08:22,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:08:22" (1/1) ... [2021-08-26 00:08:22,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 00:08:22,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 00:08:22,850 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float22.i[2558,2571] [2021-08-26 00:08:22,856 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float22.i[2753,2766] [2021-08-26 00:08:22,858 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float22.i[2881,2894] [2021-08-26 00:08:22,860 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float22.i[3073,3086] [2021-08-26 00:08:22,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 00:08:22,876 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 00:08:22,921 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float22.i[2558,2571] [2021-08-26 00:08:22,925 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float22.i[2753,2766] [2021-08-26 00:08:22,927 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float22.i[2881,2894] [2021-08-26 00:08:22,933 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float22.i[3073,3086] [2021-08-26 00:08:22,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 00:08:22,946 INFO L208 MainTranslator]: Completed translation [2021-08-26 00:08:22,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:22 WrapperNode [2021-08-26 00:08:22,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 00:08:22,947 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 00:08:22,948 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 00:08:22,948 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 00:08:22,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:22" (1/1) ... [2021-08-26 00:08:22,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:22" (1/1) ... [2021-08-26 00:08:23,006 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 00:08:23,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 00:08:23,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 00:08:23,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 00:08:23,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:22" (1/1) ... [2021-08-26 00:08:23,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:22" (1/1) ... [2021-08-26 00:08:23,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:22" (1/1) ... [2021-08-26 00:08:23,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:22" (1/1) ... [2021-08-26 00:08:23,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:22" (1/1) ... [2021-08-26 00:08:23,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:22" (1/1) ... [2021-08-26 00:08:23,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:22" (1/1) ... [2021-08-26 00:08:23,047 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 00:08:23,048 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 00:08:23,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 00:08:23,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 00:08:23,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:22" (1/1) ... [2021-08-26 00:08:23,066 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 00:08:23,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 00:08:23,086 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) [2021-08-26 00:08:23,108 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 [2021-08-26 00:08:23,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 00:08:23,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 00:08:23,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-08-26 00:08:23,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-26 00:08:23,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-08-26 00:08:23,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 00:08:23,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 00:08:23,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-26 00:08:23,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 00:08:23,479 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 00:08:23,479 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-08-26 00:08:23,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:08:23 BoogieIcfgContainer [2021-08-26 00:08:23,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 00:08:23,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 00:08:23,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 00:08:23,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 00:08:23,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 12:08:22" (1/3) ... [2021-08-26 00:08:23,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233975a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:08:23, skipping insertion in model container [2021-08-26 00:08:23,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:22" (2/3) ... [2021-08-26 00:08:23,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233975a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:08:23, skipping insertion in model container [2021-08-26 00:08:23,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:08:23" (3/3) ... [2021-08-26 00:08:23,485 INFO L111 eAbstractionObserver]: Analyzing ICFG float22.i [2021-08-26 00:08:23,489 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 00:08:23,489 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-08-26 00:08:23,516 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 00:08:23,520 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-08-26 00:08:23,520 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-26 00:08:23,529 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 31 states have internal predecessors, (35), 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) [2021-08-26 00:08:23,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-26 00:08:23,532 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 00:08:23,532 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-26 00:08:23,532 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-08-26 00:08:23,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 00:08:23,536 INFO L82 PathProgramCache]: Analyzing trace with hash 889475942, now seen corresponding path program 1 times [2021-08-26 00:08:23,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 00:08:23,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110505132] [2021-08-26 00:08:23,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 00:08:23,542 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 00:08:23,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 00:08:23,644 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 00:08:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 00:08:23,688 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-26 00:08:23,689 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 00:08:23,690 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 00:08:23,691 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 00:08:23,691 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 00:08:23,691 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 00:08:23,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 00:08:23,695 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 00:08:23,699 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2021-08-26 00:08:23,700 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2021-08-26 00:08:23,700 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2021-08-26 00:08:23,700 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2021-08-26 00:08:23,700 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2021-08-26 00:08:23,701 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2021-08-26 00:08:23,701 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2021-08-26 00:08:23,701 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2021-08-26 00:08:23,701 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2021-08-26 00:08:23,701 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2021-08-26 00:08:23,701 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2021-08-26 00:08:23,701 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2021-08-26 00:08:23,702 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2021-08-26 00:08:23,702 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2021-08-26 00:08:23,702 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2021-08-26 00:08:23,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 12:08:23 BoogieIcfgContainer [2021-08-26 00:08:23,712 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 00:08:23,712 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 00:08:23,712 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 00:08:23,712 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 00:08:23,713 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:08:23" (3/4) ... [2021-08-26 00:08:23,714 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-26 00:08:23,714 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 00:08:23,716 INFO L168 Benchmark]: Toolchain (without parser) took 1053.87 ms. Allocated memory was 73.4 MB in the beginning and 107.0 MB in the end (delta: 33.6 MB). Free memory was 57.7 MB in the beginning and 49.2 MB in the end (delta: 8.5 MB). Peak memory consumption was 42.7 MB. Max. memory is 16.1 GB. [2021-08-26 00:08:23,716 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 73.4 MB. Free memory is still 55.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 00:08:23,717 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.74 ms. Allocated memory is still 73.4 MB. Free memory was 57.6 MB in the beginning and 55.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-26 00:08:23,719 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.03 ms. Allocated memory is still 73.4 MB. Free memory was 55.4 MB in the beginning and 52.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 00:08:23,719 INFO L168 Benchmark]: Boogie Preprocessor took 38.62 ms. Allocated memory is still 73.4 MB. Free memory was 52.8 MB in the beginning and 50.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 00:08:23,723 INFO L168 Benchmark]: RCFGBuilder took 433.06 ms. Allocated memory was 73.4 MB in the beginning and 107.0 MB in the end (delta: 33.6 MB). Free memory was 50.6 MB in the beginning and 69.7 MB in the end (delta: -19.1 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. [2021-08-26 00:08:23,724 INFO L168 Benchmark]: TraceAbstraction took 229.94 ms. Allocated memory is still 107.0 MB. Free memory was 69.2 MB in the beginning and 49.2 MB in the end (delta: 20.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-08-26 00:08:23,724 INFO L168 Benchmark]: Witness Printer took 2.49 ms. Allocated memory is still 107.0 MB. Free memory is still 49.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 00:08:23,731 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 73.4 MB. Free memory is still 55.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 283.74 ms. Allocated memory is still 73.4 MB. Free memory was 57.6 MB in the beginning and 55.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.03 ms. Allocated memory is still 73.4 MB. Free memory was 55.4 MB in the beginning and 52.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.62 ms. Allocated memory is still 73.4 MB. Free memory was 52.8 MB in the beginning and 50.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 433.06 ms. Allocated memory was 73.4 MB in the beginning and 107.0 MB in the end (delta: 33.6 MB). Free memory was 50.6 MB in the beginning and 69.7 MB in the end (delta: -19.1 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 229.94 ms. Allocated memory is still 107.0 MB. Free memory was 69.2 MB in the beginning and 49.2 MB in the end (delta: 20.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 2.49 ms. Allocated memory is still 107.0 MB. Free memory is still 49.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 144]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 130. Possible FailurePath: [L139] ieee754_float f1, f2; [L128] ieee754_float c; [L130] c.ieee.negative = index & 0x1 [L131] c.ieee.exponent = 0 [L132] c.ieee.mantissa = 0 [L134] return c; [L134] return c; VAL [unknown-returnsStructure_#res.ieee.exponent-unknown=0, unknown-returnsStructure_#res.ieee.mantissa-unknown=0, unknown-returnsStructure_#res.ieee.negative-unknown=0] [L141] f1 = returnsStructure(0) [L128] ieee754_float c; [L130] c.ieee.negative = index & 0x1 [L131] c.ieee.exponent = 0 [L132] c.ieee.mantissa = 0 [L134] return c; [L134] return c; VAL [unknown-returnsStructure_#res.ieee.exponent-unknown=0, unknown-returnsStructure_#res.ieee.mantissa-unknown=0, unknown-returnsStructure_#res.ieee.negative-unknown=0] [L142] f2 = returnsStructure(1) [L144] EXPR f1.ieee.negative [L144] EXPR f2.ieee.negative VAL [unknown-returnsStructure_#res.ieee.exponent-unknown=0, unknown-returnsStructure_#res.ieee.mantissa-unknown=0, unknown-returnsStructure_#res.ieee.negative-unknown=0] [L144] COND TRUE !(f1.ieee.negative != f2.ieee.negative) [L144] reach_error() VAL [unknown-returnsStructure_#res.ieee.exponent-unknown=0, unknown-returnsStructure_#res.ieee.mantissa-unknown=0, unknown-returnsStructure_#res.ieee.negative-unknown=0] - UnprovableResult [Line: 156]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 161]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 173]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 178.9ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 4.8ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 4.4ms SsaConstructionTime, 60.8ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 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 [2021-08-26 00:08:23,765 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... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 00:08:25,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 00:08:25,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 00:08:25,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-26 00:08:25,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 00:08:25,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 00:08:25,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 00:08:25,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 00:08:25,952 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 00:08:25,952 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 00:08:25,953 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 00:08:25,953 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 00:08:25,953 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 00:08:25,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 00:08:25,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 00:08:25,955 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-26 00:08:25,985 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 00:08:25,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 00:08:25,987 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 00:08:25,987 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 00:08:25,988 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 00:08:25,988 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 00:08:25,988 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 00:08:25,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 00:08:25,989 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 00:08:25,989 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 00:08:25,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 00:08:25,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 00:08:25,990 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 00:08:25,990 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 00:08:25,990 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-26 00:08:25,990 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-26 00:08:25,990 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 00:08:25,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 00:08:25,990 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 00:08:25,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 00:08:25,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 00:08:25,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 00:08:25,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 00:08:25,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 00:08:25,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 00:08:25,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 00:08:25,991 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 00:08:25,991 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-26 00:08:25,991 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-26 00:08:25,991 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 00:08:25,991 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 00:08:25,991 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-26 00:08:25,992 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 913adc451f82986f823cb502b614806ec5bc93f1 [2021-08-26 00:08:26,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 00:08:26,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 00:08:26,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 00:08:26,268 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 00:08:26,269 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 00:08:26,269 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float22.i [2021-08-26 00:08:26,307 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0e6112db/41b88eba68e042f893bafd196ef7b145/FLAGd87b4106c [2021-08-26 00:08:26,664 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 00:08:26,664 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float22.i [2021-08-26 00:08:26,669 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0e6112db/41b88eba68e042f893bafd196ef7b145/FLAGd87b4106c [2021-08-26 00:08:26,687 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0e6112db/41b88eba68e042f893bafd196ef7b145 [2021-08-26 00:08:26,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 00:08:26,692 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 00:08:26,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 00:08:26,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 00:08:26,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 00:08:26,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:08:26" (1/1) ... [2021-08-26 00:08:26,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e13111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:26, skipping insertion in model container [2021-08-26 00:08:26,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:08:26" (1/1) ... [2021-08-26 00:08:26,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 00:08:26,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 00:08:26,851 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float22.i[2558,2571] [2021-08-26 00:08:26,858 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float22.i[2753,2766] [2021-08-26 00:08:26,860 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float22.i[2881,2894] [2021-08-26 00:08:26,862 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float22.i[3073,3086] [2021-08-26 00:08:26,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 00:08:26,903 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 00:08:26,934 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float22.i[2558,2571] [2021-08-26 00:08:26,938 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float22.i[2753,2766] [2021-08-26 00:08:26,941 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float22.i[2881,2894] [2021-08-26 00:08:26,942 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float22.i[3073,3086] [2021-08-26 00:08:26,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 00:08:26,954 INFO L208 MainTranslator]: Completed translation [2021-08-26 00:08:26,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:26 WrapperNode [2021-08-26 00:08:26,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 00:08:26,959 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 00:08:26,959 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 00:08:26,959 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 00:08:26,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:26" (1/1) ... [2021-08-26 00:08:26,977 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:26" (1/1) ... [2021-08-26 00:08:27,006 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 00:08:27,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 00:08:27,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 00:08:27,008 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 00:08:27,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:26" (1/1) ... [2021-08-26 00:08:27,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:26" (1/1) ... [2021-08-26 00:08:27,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:26" (1/1) ... [2021-08-26 00:08:27,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:26" (1/1) ... [2021-08-26 00:08:27,035 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:26" (1/1) ... [2021-08-26 00:08:27,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:26" (1/1) ... [2021-08-26 00:08:27,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:26" (1/1) ... [2021-08-26 00:08:27,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 00:08:27,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 00:08:27,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 00:08:27,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 00:08:27,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:26" (1/1) ... [2021-08-26 00:08:27,063 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 00:08:27,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 00:08:27,077 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) [2021-08-26 00:08:27,094 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 [2021-08-26 00:08:27,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-26 00:08:27,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 00:08:27,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-08-26 00:08:27,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-26 00:08:27,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 00:08:27,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 00:08:27,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-08-26 00:08:27,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 00:08:27,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-26 00:08:27,647 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 00:08:27,647 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-08-26 00:08:27,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:08:27 BoogieIcfgContainer [2021-08-26 00:08:27,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 00:08:27,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 00:08:27,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 00:08:27,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 00:08:27,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 12:08:26" (1/3) ... [2021-08-26 00:08:27,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1fd54a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:08:27, skipping insertion in model container [2021-08-26 00:08:27,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:26" (2/3) ... [2021-08-26 00:08:27,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1fd54a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:08:27, skipping insertion in model container [2021-08-26 00:08:27,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:08:27" (3/3) ... [2021-08-26 00:08:27,656 INFO L111 eAbstractionObserver]: Analyzing ICFG float22.i [2021-08-26 00:08:27,659 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 00:08:27,659 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-08-26 00:08:27,693 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 00:08:27,697 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-08-26 00:08:27,698 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-26 00:08:27,706 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 31 states have internal predecessors, (35), 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) [2021-08-26 00:08:27,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-26 00:08:27,708 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 00:08:27,709 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-26 00:08:27,709 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-08-26 00:08:27,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 00:08:27,712 INFO L82 PathProgramCache]: Analyzing trace with hash 889475942, now seen corresponding path program 1 times [2021-08-26 00:08:27,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 00:08:27,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968940789] [2021-08-26 00:08:27,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 00:08:27,721 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 00:08:27,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 00:08:27,723 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) [2021-08-26 00:08:27,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-26 00:08:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 00:08:27,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-26 00:08:27,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 00:08:28,010 INFO L354 Elim1Store]: treesize reduction 47, result has 25.4 percent of original size [2021-08-26 00:08:28,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 74 treesize of output 78 [2021-08-26 00:08:28,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 75 [2021-08-26 00:08:28,488 INFO L354 Elim1Store]: treesize reduction 977, result has 5.0 percent of original size [2021-08-26 00:08:28,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 165 treesize of output 153 [2021-08-26 00:08:28,533 INFO L354 Elim1Store]: treesize reduction 24, result has 41.5 percent of original size [2021-08-26 00:08:28,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 128 treesize of output 136 [2021-08-26 00:08:28,700 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-08-26 00:08:28,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 24423 treesize of output 23875 [2021-08-26 00:08:29,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 00:08:29,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 00:08:35,029 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_returnsStructure_#res.ieee.mantissa| (_ BitVec 32)) (|ULTIMATE.start_testOne_~#f1~0.offset| (_ BitVec 32)) (|ULTIMATE.start_returnsStructure_#res.ieee.negative| (_ BitVec 32)) (|ULTIMATE.start_returnsStructure_#res.ieee.exponent| (_ BitVec 32)) (|v_ULTIMATE.start_testOne_#t~mem10_9| (_ BitVec 32)) (|v_ULTIMATE.start_returnsStructure_#res.ieee.exponent_15| (_ BitVec 32)) (|ULTIMATE.start_testOne_~#f2~0.offset| (_ BitVec 32)) (|v_skolemized_q#valueAsBitvector_17| (_ BitVec 32)) (|v_ULTIMATE.start_returnsStructure_~#c~1.base_18| (_ BitVec 32)) (|v_ULTIMATE.start_returnsStructure_#res.ieee.mantissa_15| (_ BitVec 32))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_testOne_~#f1~0.base| (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_testOne_~#f1~0.base|) |ULTIMATE.start_testOne_~#f1~0.offset| |ULTIMATE.start_returnsStructure_#res.ieee.negative|) (bvadd (_ bv4 32) |ULTIMATE.start_testOne_~#f1~0.offset|) |ULTIMATE.start_returnsStructure_#res.ieee.exponent|) (bvadd (_ bv8 32) |ULTIMATE.start_testOne_~#f1~0.offset|) |ULTIMATE.start_returnsStructure_#res.ieee.mantissa|) |ULTIMATE.start_testOne_~#f1~0.offset| |v_skolemized_q#valueAsBitvector_17|)))) (let ((.cse3 (store (store (store (select .cse2 |v_ULTIMATE.start_returnsStructure_~#c~1.base_18|) (_ bv0 32) (_ bv1 32)) (_ bv4 32) (_ bv0 32)) (_ bv8 32) (_ bv0 32)))) (let ((.cse0 (select .cse3 (_ bv0 32)))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_returnsStructure_~#c~1.base_18|))))) (not (= (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0)) (fp ((_ extract 31 31) |v_ULTIMATE.start_testOne_#t~mem10_9|) ((_ extract 30 23) |v_ULTIMATE.start_testOne_#t~mem10_9|) ((_ extract 22 0) |v_ULTIMATE.start_testOne_#t~mem10_9|)))) (not (= (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_17|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_17|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_17|)) |c_ULTIMATE.start_returnsStructure_#res.f|)) (not (= |v_ULTIMATE.start_testOne_#t~mem10_9| (select (select (let ((.cse1 (store .cse2 |v_ULTIMATE.start_returnsStructure_~#c~1.base_18| .cse3))) (store .cse1 |c_ULTIMATE.start_testOne_~#f2~0.base| (store (store (store (store (select .cse1 |c_ULTIMATE.start_testOne_~#f2~0.base|) |ULTIMATE.start_testOne_~#f2~0.offset| .cse0) (bvadd |ULTIMATE.start_testOne_~#f2~0.offset| (_ bv4 32)) |v_ULTIMATE.start_returnsStructure_#res.ieee.exponent_15|) (bvadd |ULTIMATE.start_testOne_~#f2~0.offset| (_ bv8 32)) |v_ULTIMATE.start_returnsStructure_#res.ieee.mantissa_15|) |ULTIMATE.start_testOne_~#f2~0.offset| |v_ULTIMATE.start_testOne_#t~mem10_9|))) |c_ULTIMATE.start_testOne_~#f1~0.base|) |ULTIMATE.start_testOne_~#f1~0.offset|)))))))) is different from false [2021-08-26 00:08:35,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 00:08:35,088 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 00:08:35,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968940789] [2021-08-26 00:08:35,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968940789] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 00:08:35,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 00:08:35,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-08-26 00:08:35,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617729913] [2021-08-26 00:08:35,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 00:08:35,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 00:08:35,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 00:08:35,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=30, Unknown=1, NotChecked=10, Total=56 [2021-08-26 00:08:35,103 INFO L87 Difference]: Start difference. First operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 31 states have internal predecessors, (35), 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 8 states, 8 states have (on average 1.25) internal successors, (10), 8 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) [2021-08-26 00:08:41,260 WARN L207 SmtUtils]: Spent 6.07 s on a formula simplification. DAG size of input: 97 DAG size of output: 92 [2021-08-26 00:08:42,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 00:08:42,594 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2021-08-26 00:08:42,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 00:08:42,596 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 8 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 6 [2021-08-26 00:08:42,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 00:08:42,601 INFO L225 Difference]: With dead ends: 57 [2021-08-26 00:08:42,601 INFO L226 Difference]: Without dead ends: 25 [2021-08-26 00:08:42,602 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 10642.5ms TimeCoverageRelationStatistics Valid=25, Invalid=50, Unknown=1, NotChecked=14, Total=90 [2021-08-26 00:08:42,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-08-26 00:08:42,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-08-26 00:08:42,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 24 states have internal predecessors, (24), 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) [2021-08-26 00:08:42,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 24 transitions. [2021-08-26 00:08:42,639 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 24 transitions. Word has length 6 [2021-08-26 00:08:42,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 00:08:42,640 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 24 transitions. [2021-08-26 00:08:42,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 8 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) [2021-08-26 00:08:42,640 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2021-08-26 00:08:42,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 00:08:42,641 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 00:08:42,641 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 00:08:42,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-26 00:08:42,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 00:08:42,858 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-08-26 00:08:42,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 00:08:42,859 INFO L82 PathProgramCache]: Analyzing trace with hash 2061469933, now seen corresponding path program 1 times [2021-08-26 00:08:42,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 00:08:42,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862315423] [2021-08-26 00:08:42,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 00:08:42,859 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 00:08:42,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 00:08:42,869 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) [2021-08-26 00:08:42,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-26 00:08:43,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 00:08:43,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 24 conjunts are in the unsatisfiable core [2021-08-26 00:08:43,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 00:08:43,129 INFO L354 Elim1Store]: treesize reduction 46, result has 27.0 percent of original size [2021-08-26 00:08:43,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 76 treesize of output 81 [2021-08-26 00:08:43,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 76 [2021-08-26 00:08:43,482 INFO L354 Elim1Store]: treesize reduction 977, result has 5.0 percent of original size [2021-08-26 00:08:43,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 166 treesize of output 154 [2021-08-26 00:08:43,521 INFO L354 Elim1Store]: treesize reduction 24, result has 41.5 percent of original size [2021-08-26 00:08:43,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 129 treesize of output 137 [2021-08-26 00:08:43,649 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-08-26 00:08:43,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 435 treesize of output 391 [2021-08-26 00:08:43,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 00:08:43,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 00:08:55,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 00:08:55,177 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 00:08:55,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862315423] [2021-08-26 00:08:55,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862315423] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 00:08:55,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 00:08:55,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-08-26 00:08:55,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112797229] [2021-08-26 00:08:55,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 00:08:55,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 00:08:55,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 00:08:55,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=38, Unknown=2, NotChecked=0, Total=56 [2021-08-26 00:08:55,179 INFO L87 Difference]: Start difference. First operand 25 states and 24 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 00:08:56,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 00:08:56,063 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2021-08-26 00:08:56,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 00:08:56,064 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-26 00:08:56,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 00:08:56,065 INFO L225 Difference]: With dead ends: 25 [2021-08-26 00:08:56,065 INFO L226 Difference]: Without dead ends: 23 [2021-08-26 00:08:56,066 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 10862.6ms TimeCoverageRelationStatistics Valid=22, Invalid=48, Unknown=2, NotChecked=0, Total=72 [2021-08-26 00:08:56,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-08-26 00:08:56,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-08-26 00:08:56,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 22 states have internal predecessors, (22), 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) [2021-08-26 00:08:56,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2021-08-26 00:08:56,068 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 11 [2021-08-26 00:08:56,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 00:08:56,069 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2021-08-26 00:08:56,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 00:08:56,069 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2021-08-26 00:08:56,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-26 00:08:56,069 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 00:08:56,069 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 00:08:56,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-26 00:08:56,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 00:08:56,270 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-08-26 00:08:56,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 00:08:56,271 INFO L82 PathProgramCache]: Analyzing trace with hash -2079313263, now seen corresponding path program 1 times [2021-08-26 00:08:56,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 00:08:56,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1665086010] [2021-08-26 00:08:56,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 00:08:56,272 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 00:08:56,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 00:08:56,276 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 00:08:56,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-26 00:08:56,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 00:08:56,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 35 conjunts are in the unsatisfiable core [2021-08-26 00:08:56,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 00:08:56,635 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-08-26 00:08:56,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 34 [2021-08-26 00:08:56,743 INFO L354 Elim1Store]: treesize reduction 81, result has 23.6 percent of original size [2021-08-26 00:08:56,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 35 treesize of output 50 [2021-08-26 00:08:56,947 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-08-26 00:08:56,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 95 [2021-08-26 00:08:56,997 INFO L354 Elim1Store]: treesize reduction 81, result has 23.6 percent of original size [2021-08-26 00:08:56,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 89 treesize of output 104 [2021-08-26 00:08:57,286 INFO L354 Elim1Store]: treesize reduction 132, result has 25.0 percent of original size [2021-08-26 00:08:57,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 16 case distinctions, treesize of input 153 treesize of output 152 [2021-08-26 00:08:57,319 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-08-26 00:08:57,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 134 treesize of output 138 [2021-08-26 00:08:57,472 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-26 00:08:57,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 101 treesize of output 65 [2021-08-26 00:08:57,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 00:08:57,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 00:09:16,768 INFO L354 Elim1Store]: treesize reduction 46, result has 54.0 percent of original size [2021-08-26 00:09:16,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 1347 treesize of output 1306 [2021-08-26 00:09:16,920 INFO L354 Elim1Store]: treesize reduction 39, result has 52.4 percent of original size [2021-08-26 00:09:16,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 1234 treesize of output 1246 [2021-08-26 00:09:17,001 INFO L354 Elim1Store]: treesize reduction 28, result has 42.9 percent of original size [2021-08-26 00:09:17,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1251 treesize of output 1259 [2021-08-26 00:09:17,662 INFO L354 Elim1Store]: treesize reduction 42, result has 47.5 percent of original size [2021-08-26 00:09:17,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 55 treesize of output 81 [2021-08-26 00:09:18,974 INFO L354 Elim1Store]: treesize reduction 42, result has 52.3 percent of original size [2021-08-26 00:09:18,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 93 [2021-08-26 00:09:21,990 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 00:09:21,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1665086010] [2021-08-26 00:09:21,990 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-26 00:09:21,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [800248045] [2021-08-26 00:09:21,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 00:09:21,991 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-26 00:09:21,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-26 00:09:21,999 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-08-26 00:09:22,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-08-26 00:09:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 00:09:22,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 29 conjunts are in the unsatisfiable core [2021-08-26 00:09:22,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 00:09:22,689 INFO L354 Elim1Store]: treesize reduction 46, result has 27.0 percent of original size [2021-08-26 00:09:22,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 41 [2021-08-26 00:09:22,881 INFO L354 Elim1Store]: treesize reduction 73, result has 25.5 percent of original size [2021-08-26 00:09:22,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 36 treesize of output 51 [2021-08-26 00:09:23,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2021-08-26 00:09:23,171 INFO L354 Elim1Store]: treesize reduction 73, result has 25.5 percent of original size [2021-08-26 00:09:23,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 81 treesize of output 96 [2021-08-26 00:09:23,585 INFO L354 Elim1Store]: treesize reduction 213, result has 13.4 percent of original size [2021-08-26 00:09:23,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 145 treesize of output 141 [2021-08-26 00:09:23,627 INFO L354 Elim1Store]: treesize reduction 24, result has 41.5 percent of original size [2021-08-26 00:09:23,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 134 treesize of output 142 [2021-08-26 00:09:23,819 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-08-26 00:09:23,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 113 treesize of output 73 [2021-08-26 00:09:23,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 00:09:23,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 00:09:30,755 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_testTwo_~#f2~1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_testTwo_#t~mem18_13| (_ BitVec 32)) (|v_ULTIMATE.start_returnsField_~#c~0.base_22| (_ BitVec 32)) (|ULTIMATE.start_testTwo_~#f1~1.offset| (_ BitVec 32)) (|v_skolemized_q#valueAsBitvector_23| (_ BitVec 32))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_testTwo_~#f1~1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_testTwo_~#f1~1.base|) |ULTIMATE.start_testTwo_~#f1~1.offset| |v_skolemized_q#valueAsBitvector_23|)))) (let ((.cse1 (store (store (store (select .cse3 |v_ULTIMATE.start_returnsField_~#c~0.base_22|) (_ bv0 32) (_ bv1 32)) (_ bv4 32) (_ bv0 32)) (_ bv8 32) (_ bv0 32)))) (or (not (= (let ((.cse0 (select .cse1 (_ bv0 32)))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0))) (fp ((_ extract 31 31) |v_ULTIMATE.start_testTwo_#t~mem18_13|) ((_ extract 30 23) |v_ULTIMATE.start_testTwo_#t~mem18_13|) ((_ extract 22 0) |v_ULTIMATE.start_testTwo_#t~mem18_13|)))) (not (= |c_ULTIMATE.start_returnsField_#res| (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_23|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_23|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_23|)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_returnsField_~#c~0.base_22|))) (not (= (select (select (let ((.cse2 (store .cse3 |v_ULTIMATE.start_returnsField_~#c~0.base_22| .cse1))) (store .cse2 |c_ULTIMATE.start_testTwo_~#f2~1.base| (store (select .cse2 |c_ULTIMATE.start_testTwo_~#f2~1.base|) |ULTIMATE.start_testTwo_~#f2~1.offset| |v_ULTIMATE.start_testTwo_#t~mem18_13|))) |c_ULTIMATE.start_testTwo_~#f1~1.base|) |ULTIMATE.start_testTwo_~#f1~1.offset|) |v_ULTIMATE.start_testTwo_#t~mem18_13|)))))) is different from false [2021-08-26 00:09:30,782 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-26 00:09:30,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 859 treesize of output 784 [2021-08-26 00:09:30,843 INFO L354 Elim1Store]: treesize reduction 13, result has 69.0 percent of original size [2021-08-26 00:09:30,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 784 treesize of output 786 [2021-08-26 00:09:30,891 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-26 00:09:30,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 791 treesize of output 805 [2021-08-26 00:09:30,913 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-26 00:09:30,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 768 treesize of output 768 [2021-08-26 00:09:32,365 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-26 00:09:32,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062781550] [2021-08-26 00:09:32,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 00:09:32,367 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 00:09:32,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 00:09:32,369 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 00:09:32,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-26 00:09:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 00:09:32,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 31 conjunts are in the unsatisfiable core [2021-08-26 00:09:32,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 00:09:32,635 INFO L354 Elim1Store]: treesize reduction 46, result has 27.0 percent of original size [2021-08-26 00:09:32,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 40 [2021-08-26 00:09:32,892 INFO L354 Elim1Store]: treesize reduction 73, result has 25.5 percent of original size [2021-08-26 00:09:32,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 37 treesize of output 52 [2021-08-26 00:09:33,182 INFO L354 Elim1Store]: treesize reduction 73, result has 25.5 percent of original size [2021-08-26 00:09:33,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 71 treesize of output 86 [2021-08-26 00:09:33,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 76 [2021-08-26 00:09:33,439 INFO L354 Elim1Store]: treesize reduction 213, result has 13.4 percent of original size [2021-08-26 00:09:33,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 145 treesize of output 141 [2021-08-26 00:09:33,478 INFO L354 Elim1Store]: treesize reduction 24, result has 41.5 percent of original size [2021-08-26 00:09:33,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 134 treesize of output 142 [2021-08-26 00:09:33,654 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-08-26 00:09:33,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 113 treesize of output 73 [2021-08-26 00:09:33,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 00:09:33,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 00:09:38,599 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_testTwo_~#f2~1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_returnsField_~#c~0.base_26| (_ BitVec 32)) (|v_ULTIMATE.start_testTwo_#t~mem18_13| (_ BitVec 32)) (|ULTIMATE.start_testTwo_~#f1~1.offset| (_ BitVec 32)) (|v_skolemized_q#valueAsBitvector_25| (_ BitVec 32))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_testTwo_~#f1~1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_testTwo_~#f1~1.base|) |ULTIMATE.start_testTwo_~#f1~1.offset| |v_skolemized_q#valueAsBitvector_25|)))) (let ((.cse1 (store (store (store (select .cse3 |v_ULTIMATE.start_returnsField_~#c~0.base_26|) (_ bv0 32) (_ bv1 32)) (_ bv4 32) (_ bv0 32)) (_ bv8 32) (_ bv0 32)))) (or (not (= (let ((.cse0 (select .cse1 (_ bv0 32)))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0))) (fp ((_ extract 31 31) |v_ULTIMATE.start_testTwo_#t~mem18_13|) ((_ extract 30 23) |v_ULTIMATE.start_testTwo_#t~mem18_13|) ((_ extract 22 0) |v_ULTIMATE.start_testTwo_#t~mem18_13|)))) (not (= (select (select (let ((.cse2 (store .cse3 |v_ULTIMATE.start_returnsField_~#c~0.base_26| .cse1))) (store .cse2 |c_ULTIMATE.start_testTwo_~#f2~1.base| (store (select .cse2 |c_ULTIMATE.start_testTwo_~#f2~1.base|) |ULTIMATE.start_testTwo_~#f2~1.offset| |v_ULTIMATE.start_testTwo_#t~mem18_13|))) |c_ULTIMATE.start_testTwo_~#f1~1.base|) |ULTIMATE.start_testTwo_~#f1~1.offset|) |v_ULTIMATE.start_testTwo_#t~mem18_13|)) (not (= |c_ULTIMATE.start_returnsField_#res| (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_25|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_25|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_25|)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_returnsField_~#c~0.base_26|))))))) is different from false [2021-08-26 00:09:38,646 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-26 00:09:38,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 536 treesize of output 461 [2021-08-26 00:09:38,695 INFO L354 Elim1Store]: treesize reduction 13, result has 69.0 percent of original size [2021-08-26 00:09:38,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 461 treesize of output 463 [2021-08-26 00:09:38,730 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-26 00:09:38,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 468 treesize of output 482 [2021-08-26 00:09:38,750 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-26 00:09:38,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 445 treesize of output 445 [2021-08-26 00:09:39,766 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-26 00:09:39,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 7 treesize of output 6 [2021-08-26 00:09:39,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-08-26 00:09:39,904 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-26 00:09:39,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-26 00:09:39,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-26 00:09:39,904 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-08-26 00:09:39,904 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-08-26 00:09:39,907 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 00:09:39,908 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 00:09:39,908 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 00:09:39,908 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 00:09:39,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2021-08-26 00:09:40,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-26 00:09:40,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-26 00:09:40,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 00:09:40,516 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 00:09:40,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 12:09:40 BoogieIcfgContainer [2021-08-26 00:09:40,526 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 00:09:40,527 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 00:09:40,527 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 00:09:40,527 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 00:09:40,527 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:08:27" (3/4) ... [2021-08-26 00:09:40,529 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-26 00:09:40,529 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 00:09:40,530 INFO L168 Benchmark]: Toolchain (without parser) took 73838.17 ms. Allocated memory was 58.7 MB in the beginning and 249.6 MB in the end (delta: 190.8 MB). Free memory was 43.5 MB in the beginning and 185.7 MB in the end (delta: -142.2 MB). Peak memory consumption was 48.0 MB. Max. memory is 16.1 GB. [2021-08-26 00:09:40,530 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 46.1 MB. Free memory is still 28.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 00:09:40,530 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.42 ms. Allocated memory is still 58.7 MB. Free memory was 43.3 MB in the beginning and 40.1 MB in the end (delta: 3.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 00:09:40,530 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.59 ms. Allocated memory is still 58.7 MB. Free memory was 39.9 MB in the beginning and 37.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 00:09:40,530 INFO L168 Benchmark]: Boogie Preprocessor took 48.13 ms. Allocated memory is still 58.7 MB. Free memory was 37.4 MB in the beginning and 35.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 00:09:40,531 INFO L168 Benchmark]: RCFGBuilder took 592.56 ms. Allocated memory is still 58.7 MB. Free memory was 35.0 MB in the beginning and 34.1 MB in the end (delta: 848.0 kB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. [2021-08-26 00:09:40,531 INFO L168 Benchmark]: TraceAbstraction took 72876.76 ms. Allocated memory was 58.7 MB in the beginning and 249.6 MB in the end (delta: 190.8 MB). Free memory was 33.6 MB in the beginning and 185.7 MB in the end (delta: -152.2 MB). Peak memory consumption was 143.4 MB. Max. memory is 16.1 GB. [2021-08-26 00:09:40,531 INFO L168 Benchmark]: Witness Printer took 2.32 ms. Allocated memory is still 249.6 MB. Free memory is still 185.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 00:09:40,532 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 46.1 MB. Free memory is still 28.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 264.42 ms. Allocated memory is still 58.7 MB. Free memory was 43.3 MB in the beginning and 40.1 MB in the end (delta: 3.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.59 ms. Allocated memory is still 58.7 MB. Free memory was 39.9 MB in the beginning and 37.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.13 ms. Allocated memory is still 58.7 MB. Free memory was 37.4 MB in the beginning and 35.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 592.56 ms. Allocated memory is still 58.7 MB. Free memory was 35.0 MB in the beginning and 34.1 MB in the end (delta: 848.0 kB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 72876.76 ms. Allocated memory was 58.7 MB in the beginning and 249.6 MB in the end (delta: 190.8 MB). Free memory was 33.6 MB in the beginning and 185.7 MB in the end (delta: -152.2 MB). Peak memory consumption was 143.4 MB. Max. memory is 16.1 GB. * Witness Printer took 2.32 ms. Allocated memory is still 249.6 MB. Free memory is still 185.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 161]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L139] ieee754_float f1, f2; [L128] ieee754_float c; [L130] c.ieee.negative = index & 0x1 [L131] c.ieee.exponent = 0 [L132] c.ieee.mantissa = 0 [L134] return c; [L134] return c; [L141] f1 = returnsStructure(0) [L128] ieee754_float c; [L130] c.ieee.negative = index & 0x1 [L131] c.ieee.exponent = 0 [L132] c.ieee.mantissa = 0 [L134] return c; [L134] return c; [L142] f2 = returnsStructure(1) [L144] EXPR f1.ieee.negative [L144] EXPR f2.ieee.negative [L144] COND FALSE !(!(f1.ieee.negative != f2.ieee.negative)) [L146] return; [L146] return; [L151] ieee754_float f1, f2; [L128] ieee754_float c; [L130] c.ieee.negative = index & 0x1 [L131] c.ieee.exponent = 0 [L132] c.ieee.mantissa = 0 [L134] return c; [L134] return c; [L153] f1 = returnsStructure(0) [L128] ieee754_float c; [L130] c.ieee.negative = index & 0x1 [L131] c.ieee.exponent = 0 [L132] c.ieee.mantissa = 0 [L134] return c; [L134] return c; [L154] f2 = returnsStructure(1) [L156] EXPR f1.ieee.negative [L156] EXPR f2.ieee.negative [L156] COND FALSE !(!(f1.ieee.negative != f2.ieee.negative)) [L118] ieee754_float c; [L120] c.ieee.negative = index & 0x1 [L121] c.ieee.exponent = 0 [L122] c.ieee.mantissa = 0 [L124] EXPR c.f [L124] return c.f; [L124] return c.f; [L158] f1.f = returnsField(0) [L118] ieee754_float c; [L120] c.ieee.negative = index & 0x1 [L121] c.ieee.exponent = 0 [L122] c.ieee.mantissa = 0 [L124] EXPR c.f [L124] return c.f; [L124] return c.f; [L159] f2.f = returnsField(1) [L161] EXPR f1.ieee.negative [L161] EXPR f2.ieee.negative [L161] COND TRUE !(f1.ieee.negative != f2.ieee.negative) [L161] reach_error() - UnprovableResult [Line: 144]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 156]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 173]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 72823.7ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 5.3ms, AutomataDifference: 8395.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 42 SDtfs, 0 SDslu, 137 SDs, 0 SdLazy, 97 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2061.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 21505.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 23.4ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 44.6ms SsaConstructionTime, 174.1ms SatisfiabilityAnalysisTime, 19354.6ms InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 30 ConstructedInterpolants, 8 QuantifiedInterpolants, 1097 SizeOfPredicates, 48 NumberOfNonLiveVariables, 156 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 [2021-08-26 00:09:40,572 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...