./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_1381.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_1381.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c91754c7d707a58127a2dc4a18babac51d557647 .................................................................................................................................................................................................................................................................................. 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 -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_1381.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c91754c7d707a58127a2dc4a18babac51d557647 ......................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 16:55:33,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:55:33,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:55:33,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:55:33,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:55:33,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:55:33,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:55:33,930 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:55:33,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:55:33,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:55:33,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:55:33,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:55:33,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:55:33,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:55:33,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:55:33,940 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:55:33,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:55:33,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:55:33,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:55:33,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:55:33,955 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:55:33,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:55:33,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:55:33,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:55:33,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:55:33,971 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:55:33,971 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:55:33,972 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:55:33,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:55:33,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:55:33,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:55:33,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:55:33,978 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:55:33,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:55:33,981 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:55:33,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:55:33,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:55:33,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:55:33,983 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:55:33,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:55:33,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:55:33,987 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:55:34,011 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:55:34,012 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:55:34,014 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:55:34,015 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:55:34,015 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:55:34,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:55:34,016 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:55:34,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:55:34,016 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:55:34,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:55:34,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:55:34,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:55:34,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:55:34,019 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:55:34,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:55:34,020 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:55:34,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:55:34,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:55:34,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:55:34,021 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:55:34,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:55:34,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:55:34,022 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:55:34,022 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:55:34,023 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:55:34,023 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:55:34,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:55:34,023 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:55:34,024 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:55:34,024 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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(__VERIFIER_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 -> c91754c7d707a58127a2dc4a18babac51d557647 [2019-11-28 16:55:34,357 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:55:34,376 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:55:34,380 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:55:34,381 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:55:34,382 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:55:34,383 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1381.c [2019-11-28 16:55:34,456 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd8197947/5f1c8ddb7a4740ed87c92018e987bffc/FLAG5c04cf837 [2019-11-28 16:55:34,935 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:55:34,938 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1381.c [2019-11-28 16:55:34,945 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd8197947/5f1c8ddb7a4740ed87c92018e987bffc/FLAG5c04cf837 [2019-11-28 16:55:35,334 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd8197947/5f1c8ddb7a4740ed87c92018e987bffc [2019-11-28 16:55:35,338 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:55:35,340 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:55:35,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:55:35,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:55:35,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:55:35,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:55:35" (1/1) ... [2019-11-28 16:55:35,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69923c99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:35, skipping insertion in model container [2019-11-28 16:55:35,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:55:35" (1/1) ... [2019-11-28 16:55:35,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:55:35,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:55:35,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:55:35,557 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:55:35,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:55:35,663 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:55:35,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:35 WrapperNode [2019-11-28 16:55:35,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:55:35,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:55:35,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:55:35,665 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:55:35,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:35" (1/1) ... [2019-11-28 16:55:35,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:35" (1/1) ... [2019-11-28 16:55:35,706 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:55:35,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:55:35,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:55:35,707 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:55:35,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:35" (1/1) ... [2019-11-28 16:55:35,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:35" (1/1) ... [2019-11-28 16:55:35,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:35" (1/1) ... [2019-11-28 16:55:35,717 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:35" (1/1) ... [2019-11-28 16:55:35,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:35" (1/1) ... [2019-11-28 16:55:35,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:35" (1/1) ... [2019-11-28 16:55:35,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:35" (1/1) ... [2019-11-28 16:55:35,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:55:35,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:55:35,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:55:35,735 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:55:35,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:55:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:55:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-28 16:55:35,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 16:55:35,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-28 16:55:35,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:55:35,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:55:35,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 16:55:35,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:55:36,073 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:55:36,073 INFO L287 CfgBuilder]: Removed 14 assume(true) statements. [2019-11-28 16:55:36,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:55:36 BoogieIcfgContainer [2019-11-28 16:55:36,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:55:36,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:55:36,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:55:36,080 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:55:36,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:55:35" (1/3) ... [2019-11-28 16:55:36,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b046b05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:55:36, skipping insertion in model container [2019-11-28 16:55:36,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:35" (2/3) ... [2019-11-28 16:55:36,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b046b05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:55:36, skipping insertion in model container [2019-11-28 16:55:36,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:55:36" (3/3) ... [2019-11-28 16:55:36,086 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1381.c [2019-11-28 16:55:36,099 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:55:36,116 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:55:36,151 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:55:36,177 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:55:36,178 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:55:36,178 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:55:36,178 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:55:36,178 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:55:36,178 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:55:36,178 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:55:36,179 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:55:36,194 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-11-28 16:55:36,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 16:55:36,200 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:36,201 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:36,202 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:36,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:36,208 INFO L82 PathProgramCache]: Analyzing trace with hash 927449971, now seen corresponding path program 1 times [2019-11-28 16:55:36,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:55:36,216 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421244501] [2019-11-28 16:55:36,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:55:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:36,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:36,337 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421244501] [2019-11-28 16:55:36,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:36,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 16:55:36,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471584762] [2019-11-28 16:55:36,345 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 16:55:36,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:55:36,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 16:55:36,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:55:36,363 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2019-11-28 16:55:36,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:36,383 INFO L93 Difference]: Finished difference Result 32 states and 44 transitions. [2019-11-28 16:55:36,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 16:55:36,385 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-28 16:55:36,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:36,396 INFO L225 Difference]: With dead ends: 32 [2019-11-28 16:55:36,396 INFO L226 Difference]: Without dead ends: 14 [2019-11-28 16:55:36,400 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:55:36,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-28 16:55:36,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-28 16:55:36,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-28 16:55:36,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2019-11-28 16:55:36,438 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 10 [2019-11-28 16:55:36,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:36,438 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2019-11-28 16:55:36,439 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 16:55:36,439 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2019-11-28 16:55:36,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 16:55:36,439 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:36,440 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:36,440 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:36,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:36,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1499794425, now seen corresponding path program 1 times [2019-11-28 16:55:36,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:55:36,441 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045627932] [2019-11-28 16:55:36,441 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:55:36,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:55:36,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:55:36,563 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 16:55:36,563 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:55:36,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:55:36 BoogieIcfgContainer [2019-11-28 16:55:36,612 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:55:36,612 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:55:36,612 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:55:36,613 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:55:36,615 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:55:36" (3/4) ... [2019-11-28 16:55:36,620 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 16:55:36,620 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:55:36,623 INFO L168 Benchmark]: Toolchain (without parser) took 1281.74 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.1 MB). Free memory was 957.7 MB in the beginning and 1.0 GB in the end (delta: -66.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:36,624 INFO L168 Benchmark]: CDTParser took 0.83 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:55:36,626 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.87 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.1 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -126.2 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:36,628 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.47 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:55:36,629 INFO L168 Benchmark]: Boogie Preprocessor took 28.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:36,630 INFO L168 Benchmark]: RCFGBuilder took 340.56 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:36,631 INFO L168 Benchmark]: TraceAbstraction took 534.72 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:36,632 INFO L168 Benchmark]: Witness Printer took 7.64 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:36,647 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.83 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 322.87 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.1 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -126.2 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 41.47 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 340.56 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 534.72 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. * Witness Printer took 7.64 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 49]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 33, overapproximation of bitwiseOr at line 26, overapproximation of someBinaryArithmeticFLOAToperation at line 43. Possible FailurePath: [L43] float x = 0.0f / 0.0f; [L44] float y = __VERIFIER_nondet_float(); [L13] __uint32_t ix, iy; [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (ix) = gf_u.word [L20] ieee_float_shape_type gf_u; [L21] gf_u.value = (y) [L22] EXPR gf_u.word [L22] (iy) = gf_u.word [L25] ieee_float_shape_type sf_u; [L26] sf_u.word = ((ix & 0x7fffffff) | (iy & 0x80000000)) [L27] EXPR sf_u.value [L27] (x) = sf_u.value [L29] return x; [L45] float res = copysign_float(x, y); [L33] return x != x; [L48] COND TRUE !isnan_float(res) [L49] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-11-28 16:55:38,628 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:55:38,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:55:38,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:55:38,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:55:38,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:55:38,652 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:55:38,662 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:55:38,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:55:38,671 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:55:38,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:55:38,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:55:38,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:55:38,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:55:38,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:55:38,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:55:38,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:55:38,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:55:38,687 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:55:38,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:55:38,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:55:38,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:55:38,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:55:38,704 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:55:38,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:55:38,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:55:38,709 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:55:38,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:55:38,711 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:55:38,712 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:55:38,712 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:55:38,713 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:55:38,714 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:55:38,715 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:55:38,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:55:38,717 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:55:38,718 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:55:38,718 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:55:38,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:55:38,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:55:38,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:55:38,722 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-28 16:55:38,759 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:55:38,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:55:38,762 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:55:38,764 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:55:38,766 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:55:38,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:55:38,767 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:55:38,767 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:55:38,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:55:38,767 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:55:38,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:55:38,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:55:38,769 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-28 16:55:38,770 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-28 16:55:38,772 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:55:38,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:55:38,772 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:55:38,773 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:55:38,773 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:55:38,773 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:55:38,774 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:55:38,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:55:38,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:55:38,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:55:38,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:55:38,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:55:38,776 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-28 16:55:38,777 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-28 16:55:38,778 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:55:38,778 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:55:38,778 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-28 16:55:38,778 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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(__VERIFIER_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 -> c91754c7d707a58127a2dc4a18babac51d557647 [2019-11-28 16:55:39,153 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:55:39,175 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:55:39,182 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:55:39,184 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:55:39,185 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:55:39,186 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1381.c [2019-11-28 16:55:39,260 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d288fe0b5/25e2050ff1954f218647134b0d76fd0d/FLAGf9e258151 [2019-11-28 16:55:39,726 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:55:39,727 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1381.c [2019-11-28 16:55:39,736 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d288fe0b5/25e2050ff1954f218647134b0d76fd0d/FLAGf9e258151 [2019-11-28 16:55:40,131 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d288fe0b5/25e2050ff1954f218647134b0d76fd0d [2019-11-28 16:55:40,134 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:55:40,136 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:55:40,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:55:40,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:55:40,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:55:40,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:55:40" (1/1) ... [2019-11-28 16:55:40,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@155b5aed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:40, skipping insertion in model container [2019-11-28 16:55:40,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:55:40" (1/1) ... [2019-11-28 16:55:40,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:55:40,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:55:40,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:55:40,421 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:55:40,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:55:40,582 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:55:40,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:40 WrapperNode [2019-11-28 16:55:40,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:55:40,584 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:55:40,584 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:55:40,586 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:55:40,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:40" (1/1) ... [2019-11-28 16:55:40,618 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:40" (1/1) ... [2019-11-28 16:55:40,644 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:55:40,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:55:40,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:55:40,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:55:40,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:40" (1/1) ... [2019-11-28 16:55:40,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:40" (1/1) ... [2019-11-28 16:55:40,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:40" (1/1) ... [2019-11-28 16:55:40,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:40" (1/1) ... [2019-11-28 16:55:40,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:40" (1/1) ... [2019-11-28 16:55:40,673 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:40" (1/1) ... [2019-11-28 16:55:40,675 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:40" (1/1) ... [2019-11-28 16:55:40,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:55:40,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:55:40,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:55:40,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:55:40,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:55:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:55:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-11-28 16:55:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-28 16:55:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:55:40,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:55:40,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-28 16:55:40,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-28 16:55:40,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:55:41,055 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:55:41,057 INFO L287 CfgBuilder]: Removed 14 assume(true) statements. [2019-11-28 16:55:41,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:55:41 BoogieIcfgContainer [2019-11-28 16:55:41,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:55:41,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:55:41,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:55:41,066 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:55:41,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:55:40" (1/3) ... [2019-11-28 16:55:41,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa5a89b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:55:41, skipping insertion in model container [2019-11-28 16:55:41,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:40" (2/3) ... [2019-11-28 16:55:41,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa5a89b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:55:41, skipping insertion in model container [2019-11-28 16:55:41,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:55:41" (3/3) ... [2019-11-28 16:55:41,078 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1381.c [2019-11-28 16:55:41,093 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:55:41,107 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:55:41,120 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:55:41,144 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:55:41,144 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:55:41,144 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:55:41,144 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:55:41,145 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:55:41,145 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:55:41,145 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:55:41,145 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:55:41,157 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-11-28 16:55:41,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 16:55:41,163 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:41,164 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:41,165 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:41,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:41,170 INFO L82 PathProgramCache]: Analyzing trace with hash 927449971, now seen corresponding path program 1 times [2019-11-28 16:55:41,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:55:41,180 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1927425921] [2019-11-28 16:55:41,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-28 16:55:41,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:41,261 INFO L264 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-28 16:55:41,265 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:55:41,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:41,277 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:55:41,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:41,282 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1927425921] [2019-11-28 16:55:41,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:41,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-28 16:55:41,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227850599] [2019-11-28 16:55:41,288 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 16:55:41,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:55:41,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 16:55:41,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:55:41,302 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2019-11-28 16:55:41,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:41,318 INFO L93 Difference]: Finished difference Result 32 states and 44 transitions. [2019-11-28 16:55:41,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 16:55:41,319 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-28 16:55:41,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:41,326 INFO L225 Difference]: With dead ends: 32 [2019-11-28 16:55:41,327 INFO L226 Difference]: Without dead ends: 14 [2019-11-28 16:55:41,329 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:55:41,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-28 16:55:41,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-28 16:55:41,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-28 16:55:41,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2019-11-28 16:55:41,361 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 10 [2019-11-28 16:55:41,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:41,361 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2019-11-28 16:55:41,362 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 16:55:41,362 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2019-11-28 16:55:41,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 16:55:41,362 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:41,363 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:41,575 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-28 16:55:41,576 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:41,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:41,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1499794425, now seen corresponding path program 1 times [2019-11-28 16:55:41,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:55:41,579 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456010603] [2019-11-28 16:55:41,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-11-28 16:55:41,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:41,682 INFO L264 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-28 16:55:41,685 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:55:41,795 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:55:41,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:41,858 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:55:42,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:42,071 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456010603] [2019-11-28 16:55:42,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:42,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2019-11-28 16:55:42,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980684044] [2019-11-28 16:55:42,077 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-28 16:55:42,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:55:42,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-28 16:55:42,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-11-28 16:55:42,080 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand 12 states. [2019-11-28 16:55:42,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:42,653 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2019-11-28 16:55:42,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 16:55:42,654 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 13 [2019-11-28 16:55:42,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:42,654 INFO L225 Difference]: With dead ends: 14 [2019-11-28 16:55:42,655 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 16:55:42,656 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2019-11-28 16:55:42,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 16:55:42,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 16:55:42,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 16:55:42,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 16:55:42,657 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-11-28 16:55:42,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:42,658 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 16:55:42,658 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-28 16:55:42,658 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 16:55:42,658 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 16:55:42,859 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-28 16:55:42,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 16:55:43,002 INFO L242 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp ((_ extract 31 31) ULTIMATE.start_copysign_float_~ix~0) ((_ extract 30 23) ULTIMATE.start_copysign_float_~ix~0) ((_ extract 22 0) ULTIMATE.start_copysign_float_~ix~0)) (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_copysign_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (not (fp.eq |ULTIMATE.start_copysign_float_#res| |ULTIMATE.start_copysign_float_#res|))) [2019-11-28 16:55:43,002 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 16:55:43,002 INFO L242 CegarLoopResult]: At program point L29(lines 12 30) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp ((_ extract 31 31) ULTIMATE.start_copysign_float_~ix~0) ((_ extract 30 23) ULTIMATE.start_copysign_float_~ix~0) ((_ extract 22 0) ULTIMATE.start_copysign_float_~ix~0)) (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_copysign_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (not (fp.eq |ULTIMATE.start_copysign_float_#res| |ULTIMATE.start_copysign_float_#res|))) [2019-11-28 16:55:43,002 INFO L246 CegarLoopResult]: For program point L19(lines 19 23) no Hoare annotation was computed. [2019-11-28 16:55:43,003 INFO L246 CegarLoopResult]: For program point L19-1(lines 12 30) no Hoare annotation was computed. [2019-11-28 16:55:43,003 INFO L246 CegarLoopResult]: For program point L48(lines 48 51) no Hoare annotation was computed. [2019-11-28 16:55:43,003 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-28 16:55:43,003 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 16:55:43,004 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 16:55:43,004 INFO L246 CegarLoopResult]: For program point L24(lines 24 28) no Hoare annotation was computed. [2019-11-28 16:55:43,004 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 49) no Hoare annotation was computed. [2019-11-28 16:55:43,004 INFO L246 CegarLoopResult]: For program point L24-1(lines 12 30) no Hoare annotation was computed. [2019-11-28 16:55:43,004 INFO L246 CegarLoopResult]: For program point L24-2(lines 24 28) no Hoare annotation was computed. [2019-11-28 16:55:43,005 INFO L249 CegarLoopResult]: At program point L53(lines 35 54) the Hoare annotation is: true [2019-11-28 16:55:43,005 INFO L246 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2019-11-28 16:55:43,005 INFO L246 CegarLoopResult]: For program point L14-1(lines 14 18) no Hoare annotation was computed. [2019-11-28 16:55:43,005 INFO L242 CegarLoopResult]: At program point L14-2(lines 14 18) the Hoare annotation is: (not (fp.eq ULTIMATE.start_copysign_float_~x ULTIMATE.start_copysign_float_~x)) [2019-11-28 16:55:43,016 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-28 16:55:43,018 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-28 16:55:43,025 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-28 16:55:43,025 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-28 16:55:43,027 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-28 16:55:43,028 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-28 16:55:43,028 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-28 16:55:43,029 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-28 16:55:43,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:55:43 BoogieIcfgContainer [2019-11-28 16:55:43,032 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:55:43,033 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:55:43,033 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:55:43,033 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:55:43,034 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:55:41" (3/4) ... [2019-11-28 16:55:43,038 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 16:55:43,051 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-28 16:55:43,052 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-28 16:55:43,052 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 16:55:43,104 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 16:55:43,105 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:55:43,107 INFO L168 Benchmark]: Toolchain (without parser) took 2970.80 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 73.4 MB). Free memory was 957.7 MB in the beginning and 944.9 MB in the end (delta: 12.8 MB). Peak memory consumption was 86.2 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:43,108 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:55:43,109 INFO L168 Benchmark]: CACSL2BoogieTranslator took 446.71 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 73.4 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -103.7 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:43,110 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.31 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:43,111 INFO L168 Benchmark]: Boogie Preprocessor took 33.37 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:55:43,111 INFO L168 Benchmark]: RCFGBuilder took 381.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:43,112 INFO L168 Benchmark]: TraceAbstraction took 1971.35 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 952.1 MB in the end (delta: 82.9 MB). Peak memory consumption was 82.9 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:43,113 INFO L168 Benchmark]: Witness Printer took 71.98 ms. Allocated memory is still 1.1 GB. Free memory was 952.1 MB in the beginning and 944.9 MB in the end (delta: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:43,117 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 446.71 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 73.4 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -103.7 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 60.31 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.37 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 381.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1971.35 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 952.1 MB in the end (delta: 82.9 MB). Peak memory consumption was 82.9 MB. Max. memory is 11.5 GB. * Witness Printer took 71.98 ms. Allocated memory is still 1.1 GB. Free memory was 952.1 MB in the beginning and 944.9 MB in the end (delta: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 49]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 33]: Loop Invariant [2019-11-28 16:55:43,127 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-28 16:55:43,128 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-28 16:55:43,128 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-28 16:55:43,128 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (((\exists currentRoundingMode : FloatRoundingMode :: ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]) == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && 1bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && !~fp.eq~FLOAT(\result, \result) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 12]: Loop Invariant [2019-11-28 16:55:43,129 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-28 16:55:43,130 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-28 16:55:43,130 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-28 16:55:43,130 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]) == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && !~fp.eq~FLOAT(\result, \result) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Result: SAFE, OverallTime: 1.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 22 SDtfs, 14 SDslu, 24 SDs, 0 SdLazy, 20 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 58 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 42 ConstructedInterpolants, 12 QuantifiedInterpolants, 4098 SizeOfPredicates, 15 NumberOfNonLiveVariables, 75 ConjunctsInSsa, 15 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...