./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_1051.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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_1051.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 863e70131520c7e8858a4f32bea4c5cffd3e6ae2 ....................................................................................................................................................................................................................................................................................................................................... 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 -ea -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_1051.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 863e70131520c7e8858a4f32bea4c5cffd3e6ae2 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 17:53:23,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:53:23,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:53:23,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:53:23,914 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:53:23,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:53:23,918 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:53:23,932 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:53:23,934 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:53:23,936 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:53:23,938 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:53:23,939 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:53:23,939 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:53:23,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:53:23,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:53:23,947 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:53:23,949 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:53:23,952 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:53:23,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:53:23,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:53:23,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:53:23,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:53:23,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:53:23,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:53:23,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:53:23,971 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:53:23,971 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:53:23,972 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:53:23,973 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:53:23,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:53:23,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:53:23,974 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:53:23,975 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:53:23,976 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:53:23,977 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:53:23,977 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:53:23,978 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:53:23,978 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:53:23,978 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:53:23,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:53:23,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:53:23,981 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 17:53:23,996 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:53:23,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:53:23,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:53:23,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:53:23,998 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:53:23,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:53:23,999 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:53:23,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 17:53:23,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:53:23,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:53:23,999 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:53:24,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:53:24,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:53:24,000 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:53:24,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:53:24,000 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:53:24,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:53:24,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:53:24,001 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:53:24,002 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:53:24,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:53:24,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:53:24,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:53:24,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:53:24,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:53:24,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 17:53:24,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 17:53:24,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:53:24,003 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:53:24,004 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 -> 863e70131520c7e8858a4f32bea4c5cffd3e6ae2 [2020-07-28 17:53:24,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:53:24,338 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:53:24,342 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:53:24,344 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:53:24,345 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:53:24,345 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1051.c [2020-07-28 17:53:24,431 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec6eccb81/4cf86c324b1d4128ad307cc4f8bdaa39/FLAGd0bcee509 [2020-07-28 17:53:24,894 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:53:24,895 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1051.c [2020-07-28 17:53:24,902 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec6eccb81/4cf86c324b1d4128ad307cc4f8bdaa39/FLAGd0bcee509 [2020-07-28 17:53:25,256 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec6eccb81/4cf86c324b1d4128ad307cc4f8bdaa39 [2020-07-28 17:53:25,260 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:53:25,262 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:53:25,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:53:25,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:53:25,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:53:25,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:53:25" (1/1) ... [2020-07-28 17:53:25,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@287afa32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:25, skipping insertion in model container [2020-07-28 17:53:25,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:53:25" (1/1) ... [2020-07-28 17:53:25,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:53:25,301 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:53:25,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:53:25,498 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:53:25,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:53:25,588 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:53:25,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:25 WrapperNode [2020-07-28 17:53:25,590 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:53:25,592 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:53:25,592 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:53:25,593 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:53:25,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:25" (1/1) ... [2020-07-28 17:53:25,737 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:25" (1/1) ... [2020-07-28 17:53:25,774 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:53:25,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:53:25,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:53:25,775 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:53:25,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:25" (1/1) ... [2020-07-28 17:53:25,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:25" (1/1) ... [2020-07-28 17:53:25,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:25" (1/1) ... [2020-07-28 17:53:25,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:25" (1/1) ... [2020-07-28 17:53:25,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:25" (1/1) ... [2020-07-28 17:53:25,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:25" (1/1) ... [2020-07-28 17:53:25,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:25" (1/1) ... [2020-07-28 17:53:25,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:53:25,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:53:25,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:53:25,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:53:25,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:25" (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 [2020-07-28 17:53:25,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-28 17:53:25,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-28 17:53:25,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-28 17:53:25,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-28 17:53:25,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:53:25,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:53:25,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-28 17:53:25,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-28 17:53:26,389 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:53:26,390 INFO L295 CfgBuilder]: Removed 12 assume(true) statements. [2020-07-28 17:53:26,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:53:26 BoogieIcfgContainer [2020-07-28 17:53:26,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:53:26,395 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:53:26,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:53:26,399 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:53:26,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:53:25" (1/3) ... [2020-07-28 17:53:26,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c8b7f47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:53:26, skipping insertion in model container [2020-07-28 17:53:26,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:25" (2/3) ... [2020-07-28 17:53:26,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c8b7f47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:53:26, skipping insertion in model container [2020-07-28 17:53:26,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:53:26" (3/3) ... [2020-07-28 17:53:26,404 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1051.c [2020-07-28 17:53:26,416 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:53:26,428 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:53:26,444 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:53:26,477 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:53:26,478 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:53:26,478 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:53:26,478 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:53:26,479 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:53:26,479 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:53:26,479 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:53:26,479 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:53:26,502 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-07-28 17:53:26,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-28 17:53:26,513 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:53:26,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:53:26,514 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:53:26,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:53:26,523 INFO L82 PathProgramCache]: Analyzing trace with hash -2022266355, now seen corresponding path program 1 times [2020-07-28 17:53:26,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:53:26,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633028505] [2020-07-28 17:53:26,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:53:26,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:53:26,727 INFO L280 TraceCheckUtils]: 0: Hoare triple {29#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~huge_floor~0 := 1.0E30; {29#true} is VALID [2020-07-28 17:53:26,728 INFO L280 TraceCheckUtils]: 1: Hoare triple {29#true} havoc main_#res;havoc main_#t~ret4, main_#t~ret5, main_~x~0, main_~res~0;main_~x~0 := ~someBinaryArithmeticFLOAToperation(0.0, 0.0);floor_float_#in~x := main_~x~0;havoc floor_float_#res;havoc floor_float_#t~mem0, floor_float_#t~union1, floor_float_~#gf_u~0.base, floor_float_~#gf_u~0.offset, floor_float_#t~mem2, floor_float_#t~union3, floor_float_~#sf_u~0.base, floor_float_~#sf_u~0.offset, floor_float_~x, floor_float_~i0~0, floor_float_~j0~0, floor_float_~i~0, floor_float_~ix~0;floor_float_~x := floor_float_#in~x;havoc floor_float_~i0~0;havoc floor_float_~j0~0;havoc floor_float_~i~0;havoc floor_float_~ix~0; {29#true} is VALID [2020-07-28 17:53:26,738 INFO L280 TraceCheckUtils]: 2: Hoare triple {29#true} assume !true; {30#false} is VALID [2020-07-28 17:53:26,739 INFO L280 TraceCheckUtils]: 3: Hoare triple {30#false} floor_float_~ix~0 := ~bitwiseAnd(floor_float_~i0~0, 2147483647);floor_float_~j0~0 := (if (floor_float_~ix~0 / 8388608 - 127) % 4294967296 % 4294967296 <= 2147483647 then (floor_float_~ix~0 / 8388608 - 127) % 4294967296 % 4294967296 else (floor_float_~ix~0 / 8388608 - 127) % 4294967296 % 4294967296 - 4294967296); {30#false} is VALID [2020-07-28 17:53:26,740 INFO L280 TraceCheckUtils]: 4: Hoare triple {30#false} assume !(floor_float_~j0~0 < 23); {30#false} is VALID [2020-07-28 17:53:26,740 INFO L280 TraceCheckUtils]: 5: Hoare triple {30#false} assume !!(floor_float_~ix~0 % 4294967296 < 2139095040);floor_float_#res := floor_float_~x; {30#false} is VALID [2020-07-28 17:53:26,741 INFO L280 TraceCheckUtils]: 6: Hoare triple {30#false} main_#t~ret4 := floor_float_#res;main_~res~0 := main_#t~ret4;havoc main_#t~ret4;isnan_float_#in~x := main_~res~0;havoc isnan_float_#res;havoc isnan_float_~x;isnan_float_~x := isnan_float_#in~x;isnan_float_#res := (if ~someBinaryFLOATComparisonOperation(isnan_float_~x, isnan_float_~x) then 1 else 0); {30#false} is VALID [2020-07-28 17:53:26,741 INFO L280 TraceCheckUtils]: 7: Hoare triple {30#false} main_#t~ret5 := isnan_float_#res;assume -2147483648 <= main_#t~ret5 && main_#t~ret5 <= 2147483647; {30#false} is VALID [2020-07-28 17:53:26,742 INFO L280 TraceCheckUtils]: 8: Hoare triple {30#false} assume 0 == main_#t~ret5;havoc main_#t~ret5; {30#false} is VALID [2020-07-28 17:53:26,742 INFO L280 TraceCheckUtils]: 9: Hoare triple {30#false} assume !false; {30#false} is VALID [2020-07-28 17:53:26,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:53:26,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633028505] [2020-07-28 17:53:26,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:53:26,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-28 17:53:26,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476893406] [2020-07-28 17:53:26,759 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-28 17:53:26,760 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:53:26,763 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 17:53:26,787 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:53:26,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 17:53:26,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 17:53:26,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 17:53:26,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 17:53:26,800 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2020-07-28 17:53:26,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:53:26,873 INFO L93 Difference]: Finished difference Result 50 states and 76 transitions. [2020-07-28 17:53:26,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 17:53:26,873 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-28 17:53:26,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:53:26,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:53:26,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 76 transitions. [2020-07-28 17:53:26,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:53:26,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 76 transitions. [2020-07-28 17:53:26,889 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 76 transitions. [2020-07-28 17:53:27,024 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 76 edges. 76 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:53:27,036 INFO L225 Difference]: With dead ends: 50 [2020-07-28 17:53:27,037 INFO L226 Difference]: Without dead ends: 23 [2020-07-28 17:53:27,040 INFO L675 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 [2020-07-28 17:53:27,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-28 17:53:27,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-07-28 17:53:27,074 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:53:27,075 INFO L82 GeneralOperation]: Start isEquivalent. First operand 23 states. Second operand 23 states. [2020-07-28 17:53:27,075 INFO L74 IsIncluded]: Start isIncluded. First operand 23 states. Second operand 23 states. [2020-07-28 17:53:27,075 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 23 states. [2020-07-28 17:53:27,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:53:27,079 INFO L93 Difference]: Finished difference Result 23 states and 31 transitions. [2020-07-28 17:53:27,080 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2020-07-28 17:53:27,080 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:53:27,081 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:53:27,081 INFO L74 IsIncluded]: Start isIncluded. First operand 23 states. Second operand 23 states. [2020-07-28 17:53:27,081 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 23 states. [2020-07-28 17:53:27,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:53:27,084 INFO L93 Difference]: Finished difference Result 23 states and 31 transitions. [2020-07-28 17:53:27,085 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2020-07-28 17:53:27,085 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:53:27,086 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:53:27,086 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:53:27,086 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:53:27,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-28 17:53:27,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2020-07-28 17:53:27,091 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 10 [2020-07-28 17:53:27,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:53:27,091 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2020-07-28 17:53:27,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 17:53:27,092 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2020-07-28 17:53:27,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-28 17:53:27,093 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:53:27,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:53:27,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 17:53:27,093 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:53:27,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:53:27,094 INFO L82 PathProgramCache]: Analyzing trace with hash -62606256, now seen corresponding path program 1 times [2020-07-28 17:53:27,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:53:27,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120012828] [2020-07-28 17:53:27,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:53:27,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-28 17:53:27,212 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.theory.linar.TableauxRow.(TableauxRow.java:45) at de.uni_freiburg.informatik.ultimate.smtinterpol.theory.linar.LinArSolve.generateLinVar(LinArSolve.java:275) at de.uni_freiburg.informatik.ultimate.smtinterpol.theory.linar.LinArSolve.createEquality(LinArSolve.java:1974) at de.uni_freiburg.informatik.ultimate.smtinterpol.convert.EqualityProxy.createLAEquality(EqualityProxy.java:83) at de.uni_freiburg.informatik.ultimate.smtinterpol.convert.EqualityProxy.createAtom(EqualityProxy.java:165) at de.uni_freiburg.informatik.ultimate.smtinterpol.convert.EqualityProxy.getLiteral(EqualityProxy.java:186) at de.uni_freiburg.informatik.ultimate.smtinterpol.convert.EqualityProxy.createCCEquality(EqualityProxy.java:109) at de.uni_freiburg.informatik.ultimate.smtinterpol.theory.linar.LinArSolve.mbtc(LinArSolve.java:1891) at de.uni_freiburg.informatik.ultimate.smtinterpol.theory.linar.LinArSolve.computeConflictClause(LinArSolve.java:664) at de.uni_freiburg.informatik.ultimate.smtinterpol.dpll.DPLLEngine.checkConsistency(DPLLEngine.java:1010) at de.uni_freiburg.informatik.ultimate.smtinterpol.dpll.DPLLEngine.solve(DPLLEngine.java:1157) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol$CheckType$1.check(SMTInterpol.java:117) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.checkSatAssuming(SMTInterpol.java:494) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.checkSat(SMTInterpol.java:446) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAsserter.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserter.java:130) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:295) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:206) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-28 17:53:27,221 INFO L168 Benchmark]: Toolchain (without parser) took 1958.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 956.2 MB in the beginning and 1.1 GB in the end (delta: -104.5 MB). Peak memory consumption was 48.1 MB. Max. memory is 11.5 GB. [2020-07-28 17:53:27,222 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:53:27,223 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.30 ms. Allocated memory is still 1.0 GB. Free memory was 956.2 MB in the beginning and 945.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:53:27,224 INFO L168 Benchmark]: Boogie Procedure Inliner took 182.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 945.5 MB in the beginning and 1.1 GB in the end (delta: -196.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:53:27,224 INFO L168 Benchmark]: Boogie Preprocessor took 70.01 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:53:27,225 INFO L168 Benchmark]: RCFGBuilder took 549.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.5 MB). Peak memory consumption was 33.5 MB. Max. memory is 11.5 GB. [2020-07-28 17:53:27,226 INFO L168 Benchmark]: TraceAbstraction took 822.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 47.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:53:27,230 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 327.30 ms. Allocated memory is still 1.0 GB. Free memory was 956.2 MB in the beginning and 945.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 182.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 945.5 MB in the beginning and 1.1 GB in the end (delta: -196.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 70.01 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 549.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.5 MB). Peak memory consumption was 33.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 822.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 47.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.theory.linar.TableauxRow.(TableauxRow.java:45) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 17:53:29,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:53:29,217 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:53:29,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:53:29,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:53:29,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:53:29,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:53:29,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:53:29,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:53:29,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:53:29,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:53:29,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:53:29,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:53:29,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:53:29,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:53:29,267 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:53:29,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:53:29,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:53:29,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:53:29,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:53:29,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:53:29,275 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:53:29,276 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:53:29,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:53:29,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:53:29,279 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:53:29,279 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:53:29,280 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:53:29,280 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:53:29,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:53:29,281 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:53:29,282 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:53:29,283 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:53:29,284 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:53:29,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:53:29,285 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:53:29,286 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:53:29,286 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:53:29,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:53:29,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:53:29,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:53:29,288 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-07-28 17:53:29,304 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:53:29,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:53:29,305 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:53:29,305 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:53:29,306 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:53:29,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:53:29,306 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:53:29,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:53:29,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:53:29,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:53:29,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:53:29,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:53:29,307 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-07-28 17:53:29,308 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-07-28 17:53:29,308 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:53:29,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:53:29,308 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:53:29,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:53:29,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:53:29,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:53:29,309 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:53:29,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:53:29,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:53:29,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:53:29,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:53:29,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:53:29,311 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-07-28 17:53:29,311 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-07-28 17:53:29,311 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:53:29,311 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:53:29,312 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-28 17:53:29,312 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 -> 863e70131520c7e8858a4f32bea4c5cffd3e6ae2 [2020-07-28 17:53:29,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:53:29,671 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:53:29,678 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:53:29,681 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:53:29,682 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:53:29,683 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1051.c [2020-07-28 17:53:29,756 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2df6658b2/2d523daf7f9847c4a20ef71160a5f539/FLAG83d1c0274 [2020-07-28 17:53:30,147 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:53:30,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1051.c [2020-07-28 17:53:30,155 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2df6658b2/2d523daf7f9847c4a20ef71160a5f539/FLAG83d1c0274 [2020-07-28 17:53:30,168 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2df6658b2/2d523daf7f9847c4a20ef71160a5f539 [2020-07-28 17:53:30,173 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:53:30,176 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:53:30,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:53:30,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:53:30,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:53:30,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:53:30" (1/1) ... [2020-07-28 17:53:30,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53eda24d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:30, skipping insertion in model container [2020-07-28 17:53:30,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:53:30" (1/1) ... [2020-07-28 17:53:30,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:53:30,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:53:30,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:53:30,436 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:53:30,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:53:30,586 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:53:30,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:30 WrapperNode [2020-07-28 17:53:30,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:53:30,587 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:53:30,587 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:53:30,588 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:53:30,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:30" (1/1) ... [2020-07-28 17:53:30,624 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:30" (1/1) ... [2020-07-28 17:53:30,664 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:53:30,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:53:30,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:53:30,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:53:30,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:30" (1/1) ... [2020-07-28 17:53:30,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:30" (1/1) ... [2020-07-28 17:53:30,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:30" (1/1) ... [2020-07-28 17:53:30,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:30" (1/1) ... [2020-07-28 17:53:30,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:30" (1/1) ... [2020-07-28 17:53:30,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:30" (1/1) ... [2020-07-28 17:53:30,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:30" (1/1) ... [2020-07-28 17:53:30,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:53:30,715 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:53:30,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:53:30,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:53:30,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:30" (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 [2020-07-28 17:53:30,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-28 17:53:30,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-07-28 17:53:30,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-07-28 17:53:30,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:53:30,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:53:30,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-07-28 17:53:30,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-07-28 17:53:30,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-28 17:53:31,515 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:53:31,515 INFO L295 CfgBuilder]: Removed 12 assume(true) statements. [2020-07-28 17:53:31,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:53:31 BoogieIcfgContainer [2020-07-28 17:53:31,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:53:31,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:53:31,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:53:31,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:53:31,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:53:30" (1/3) ... [2020-07-28 17:53:31,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32dbdd14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:53:31, skipping insertion in model container [2020-07-28 17:53:31,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:30" (2/3) ... [2020-07-28 17:53:31,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32dbdd14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:53:31, skipping insertion in model container [2020-07-28 17:53:31,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:53:31" (3/3) ... [2020-07-28 17:53:31,527 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1051.c [2020-07-28 17:53:31,538 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:53:31,546 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:53:31,559 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:53:31,580 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:53:31,580 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:53:31,580 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:53:31,580 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:53:31,580 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:53:31,580 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:53:31,581 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:53:31,581 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:53:31,595 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-07-28 17:53:31,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-28 17:53:31,601 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:53:31,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:53:31,602 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:53:31,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:53:31,607 INFO L82 PathProgramCache]: Analyzing trace with hash -2022266355, now seen corresponding path program 1 times [2020-07-28 17:53:31,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:53:31,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1038262106] [2020-07-28 17:53:31,618 INFO L95 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 [2020-07-28 17:53:31,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:53:31,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-28 17:53:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:53:31,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 17:53:31,777 INFO L280 TraceCheckUtils]: 0: Hoare triple {29#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;~huge_floor~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 1.0E30)); {29#true} is VALID [2020-07-28 17:53:31,778 INFO L280 TraceCheckUtils]: 1: Hoare triple {29#true} havoc main_#res;havoc main_#t~ret4, main_#t~ret5, main_~x~0, main_~res~0;main_~x~0 := ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~FLOAT(), ~Pluszero~FLOAT());floor_float_#in~x := main_~x~0;havoc floor_float_#res;havoc floor_float_#t~mem0, floor_float_#t~union1, floor_float_~#gf_u~0.base, floor_float_~#gf_u~0.offset, floor_float_#t~mem2, floor_float_#t~union3, floor_float_~#sf_u~0.base, floor_float_~#sf_u~0.offset, floor_float_~x, floor_float_~i0~0, floor_float_~j0~0, floor_float_~i~0, floor_float_~ix~0;floor_float_~x := floor_float_#in~x;havoc floor_float_~i0~0;havoc floor_float_~j0~0;havoc floor_float_~i~0;havoc floor_float_~ix~0; {29#true} is VALID [2020-07-28 17:53:31,779 INFO L280 TraceCheckUtils]: 2: Hoare triple {29#true} assume !true; {30#false} is VALID [2020-07-28 17:53:31,779 INFO L280 TraceCheckUtils]: 3: Hoare triple {30#false} floor_float_~ix~0 := ~bvand32(2147483647bv32, floor_float_~i0~0);floor_float_~j0~0 := ~bvsub32(~bvlshr32(floor_float_~ix~0, 23bv32), 127bv32); {30#false} is VALID [2020-07-28 17:53:31,780 INFO L280 TraceCheckUtils]: 4: Hoare triple {30#false} assume !~bvslt32(floor_float_~j0~0, 23bv32); {30#false} is VALID [2020-07-28 17:53:31,780 INFO L280 TraceCheckUtils]: 5: Hoare triple {30#false} assume !!~bvult32(floor_float_~ix~0, 2139095040bv32);floor_float_#res := floor_float_~x; {30#false} is VALID [2020-07-28 17:53:31,781 INFO L280 TraceCheckUtils]: 6: Hoare triple {30#false} main_#t~ret4 := floor_float_#res;main_~res~0 := main_#t~ret4;havoc main_#t~ret4;isnan_float_#in~x := main_~res~0;havoc isnan_float_#res;havoc isnan_float_~x;isnan_float_~x := isnan_float_#in~x;isnan_float_#res := (if !~fp.eq~FLOAT(isnan_float_~x, isnan_float_~x) then 1bv32 else 0bv32); {30#false} is VALID [2020-07-28 17:53:31,781 INFO L280 TraceCheckUtils]: 7: Hoare triple {30#false} main_#t~ret5 := isnan_float_#res; {30#false} is VALID [2020-07-28 17:53:31,782 INFO L280 TraceCheckUtils]: 8: Hoare triple {30#false} assume 0bv32 == main_#t~ret5;havoc main_#t~ret5; {30#false} is VALID [2020-07-28 17:53:31,782 INFO L280 TraceCheckUtils]: 9: Hoare triple {30#false} assume !false; {30#false} is VALID [2020-07-28 17:53:31,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:53:31,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 17:53:31,806 INFO L280 TraceCheckUtils]: 9: Hoare triple {30#false} assume !false; {30#false} is VALID [2020-07-28 17:53:31,806 INFO L280 TraceCheckUtils]: 8: Hoare triple {30#false} assume 0bv32 == main_#t~ret5;havoc main_#t~ret5; {30#false} is VALID [2020-07-28 17:53:31,807 INFO L280 TraceCheckUtils]: 7: Hoare triple {30#false} main_#t~ret5 := isnan_float_#res; {30#false} is VALID [2020-07-28 17:53:31,807 INFO L280 TraceCheckUtils]: 6: Hoare triple {30#false} main_#t~ret4 := floor_float_#res;main_~res~0 := main_#t~ret4;havoc main_#t~ret4;isnan_float_#in~x := main_~res~0;havoc isnan_float_#res;havoc isnan_float_~x;isnan_float_~x := isnan_float_#in~x;isnan_float_#res := (if !~fp.eq~FLOAT(isnan_float_~x, isnan_float_~x) then 1bv32 else 0bv32); {30#false} is VALID [2020-07-28 17:53:31,808 INFO L280 TraceCheckUtils]: 5: Hoare triple {30#false} assume !!~bvult32(floor_float_~ix~0, 2139095040bv32);floor_float_#res := floor_float_~x; {30#false} is VALID [2020-07-28 17:53:31,809 INFO L280 TraceCheckUtils]: 4: Hoare triple {30#false} assume !~bvslt32(floor_float_~j0~0, 23bv32); {30#false} is VALID [2020-07-28 17:53:31,809 INFO L280 TraceCheckUtils]: 3: Hoare triple {30#false} floor_float_~ix~0 := ~bvand32(2147483647bv32, floor_float_~i0~0);floor_float_~j0~0 := ~bvsub32(~bvlshr32(floor_float_~ix~0, 23bv32), 127bv32); {30#false} is VALID [2020-07-28 17:53:31,811 INFO L280 TraceCheckUtils]: 2: Hoare triple {29#true} assume !true; {30#false} is VALID [2020-07-28 17:53:31,812 INFO L280 TraceCheckUtils]: 1: Hoare triple {29#true} havoc main_#res;havoc main_#t~ret4, main_#t~ret5, main_~x~0, main_~res~0;main_~x~0 := ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~FLOAT(), ~Pluszero~FLOAT());floor_float_#in~x := main_~x~0;havoc floor_float_#res;havoc floor_float_#t~mem0, floor_float_#t~union1, floor_float_~#gf_u~0.base, floor_float_~#gf_u~0.offset, floor_float_#t~mem2, floor_float_#t~union3, floor_float_~#sf_u~0.base, floor_float_~#sf_u~0.offset, floor_float_~x, floor_float_~i0~0, floor_float_~j0~0, floor_float_~i~0, floor_float_~ix~0;floor_float_~x := floor_float_#in~x;havoc floor_float_~i0~0;havoc floor_float_~j0~0;havoc floor_float_~i~0;havoc floor_float_~ix~0; {29#true} is VALID [2020-07-28 17:53:31,812 INFO L280 TraceCheckUtils]: 0: Hoare triple {29#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;~huge_floor~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 1.0E30)); {29#true} is VALID [2020-07-28 17:53:31,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:53:31,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1038262106] [2020-07-28 17:53:31,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:53:31,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-07-28 17:53:31,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802400269] [2020-07-28 17:53:31,824 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-28 17:53:31,831 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:53:31,836 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 17:53:31,881 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:53:31,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 17:53:31,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 17:53:31,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 17:53:31,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 17:53:31,895 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2020-07-28 17:53:32,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:53:32,219 INFO L93 Difference]: Finished difference Result 50 states and 76 transitions. [2020-07-28 17:53:32,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 17:53:32,220 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-28 17:53:32,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:53:32,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:53:32,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 76 transitions. [2020-07-28 17:53:32,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:53:32,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 76 transitions. [2020-07-28 17:53:32,238 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 76 transitions. [2020-07-28 17:53:32,531 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 76 edges. 76 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:53:32,545 INFO L225 Difference]: With dead ends: 50 [2020-07-28 17:53:32,545 INFO L226 Difference]: Without dead ends: 23 [2020-07-28 17:53:32,551 INFO L675 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 [2020-07-28 17:53:32,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-28 17:53:32,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-07-28 17:53:32,588 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:53:32,588 INFO L82 GeneralOperation]: Start isEquivalent. First operand 23 states. Second operand 23 states. [2020-07-28 17:53:32,589 INFO L74 IsIncluded]: Start isIncluded. First operand 23 states. Second operand 23 states. [2020-07-28 17:53:32,589 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 23 states. [2020-07-28 17:53:32,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:53:32,594 INFO L93 Difference]: Finished difference Result 23 states and 31 transitions. [2020-07-28 17:53:32,595 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2020-07-28 17:53:32,595 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:53:32,596 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:53:32,596 INFO L74 IsIncluded]: Start isIncluded. First operand 23 states. Second operand 23 states. [2020-07-28 17:53:32,596 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 23 states. [2020-07-28 17:53:32,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:53:32,599 INFO L93 Difference]: Finished difference Result 23 states and 31 transitions. [2020-07-28 17:53:32,600 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2020-07-28 17:53:32,600 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:53:32,600 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:53:32,601 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:53:32,601 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:53:32,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-28 17:53:32,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2020-07-28 17:53:32,605 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 10 [2020-07-28 17:53:32,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:53:32,606 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2020-07-28 17:53:32,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 17:53:32,606 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2020-07-28 17:53:32,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-28 17:53:32,607 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:53:32,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:53:32,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-07-28 17:53:32,809 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:53:32,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:53:32,810 INFO L82 PathProgramCache]: Analyzing trace with hash -62606256, now seen corresponding path program 1 times [2020-07-28 17:53:32,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:53:32,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406546833] [2020-07-28 17:53:32,812 INFO L95 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 [2020-07-28 17:53:32,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:53:32,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-28 17:53:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:53:32,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 17:53:33,047 INFO L523 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-28 17:53:33,110 INFO L280 TraceCheckUtils]: 0: Hoare triple {217#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;~huge_floor~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 1.0E30)); {217#true} is VALID [2020-07-28 17:53:33,113 INFO L280 TraceCheckUtils]: 1: Hoare triple {217#true} havoc main_#res;havoc main_#t~ret4, main_#t~ret5, main_~x~0, main_~res~0;main_~x~0 := ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~FLOAT(), ~Pluszero~FLOAT());floor_float_#in~x := main_~x~0;havoc floor_float_#res;havoc floor_float_#t~mem0, floor_float_#t~union1, floor_float_~#gf_u~0.base, floor_float_~#gf_u~0.offset, floor_float_#t~mem2, floor_float_#t~union3, floor_float_~#sf_u~0.base, floor_float_~#sf_u~0.offset, floor_float_~x, floor_float_~i0~0, floor_float_~j0~0, floor_float_~i~0, floor_float_~ix~0;floor_float_~x := floor_float_#in~x;havoc floor_float_~i0~0;havoc floor_float_~j0~0;havoc floor_float_~i~0;havoc floor_float_~ix~0; {225#(exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_floor_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} is VALID [2020-07-28 17:53:33,114 INFO L280 TraceCheckUtils]: 2: Hoare triple {225#(exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_floor_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} call floor_float_~#gf_u~0.base, floor_float_~#gf_u~0.offset := #Ultimate.allocOnStack(4bv32);call write~intFLOATTYPE4(floor_float_~x, floor_float_~#gf_u~0.base, floor_float_~#gf_u~0.offset, 4bv32);call floor_float_#t~mem0 := read~intINTTYPE4(floor_float_~#gf_u~0.base, floor_float_~#gf_u~0.offset, 4bv32);floor_float_~i0~0 := floor_float_#t~mem0;call write~intFLOATTYPE4(floor_float_#t~union1, floor_float_~#gf_u~0.base, floor_float_~#gf_u~0.offset, 4bv32);havoc floor_float_#t~union1;havoc floor_float_#t~mem0;call ULTIMATE.dealloc(floor_float_~#gf_u~0.base, floor_float_~#gf_u~0.offset);havoc floor_float_~#gf_u~0.base, floor_float_~#gf_u~0.offset; {225#(exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_floor_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} is VALID [2020-07-28 17:53:33,116 INFO L280 TraceCheckUtils]: 3: Hoare triple {225#(exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_floor_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} goto; {225#(exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_floor_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} is VALID [2020-07-28 17:53:33,117 INFO L280 TraceCheckUtils]: 4: Hoare triple {225#(exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_floor_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} floor_float_~ix~0 := ~bvand32(2147483647bv32, floor_float_~i0~0);floor_float_~j0~0 := ~bvsub32(~bvlshr32(floor_float_~ix~0, 23bv32), 127bv32); {225#(exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_floor_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} is VALID [2020-07-28 17:53:33,118 INFO L280 TraceCheckUtils]: 5: Hoare triple {225#(exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_floor_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} assume !~bvslt32(floor_float_~j0~0, 23bv32); {225#(exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_floor_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} is VALID [2020-07-28 17:53:33,120 INFO L280 TraceCheckUtils]: 6: Hoare triple {225#(exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_floor_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} assume !!~bvult32(floor_float_~ix~0, 2139095040bv32);floor_float_#res := floor_float_~x; {241#(exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_floor_float_#res| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} is VALID [2020-07-28 17:53:33,123 INFO L280 TraceCheckUtils]: 7: Hoare triple {241#(exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_floor_float_#res| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} main_#t~ret4 := floor_float_#res;main_~res~0 := main_#t~ret4;havoc main_#t~ret4;isnan_float_#in~x := main_~res~0;havoc isnan_float_#res;havoc isnan_float_~x;isnan_float_~x := isnan_float_#in~x;isnan_float_#res := (if !~fp.eq~FLOAT(isnan_float_~x, isnan_float_~x) then 1bv32 else 0bv32); {245#(= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)} is VALID [2020-07-28 17:53:33,124 INFO L280 TraceCheckUtils]: 8: Hoare triple {245#(= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)} main_#t~ret5 := isnan_float_#res; {249#(= (bvadd |ULTIMATE.start_main_#t~ret5| (_ bv4294967295 32)) (_ bv0 32))} is VALID [2020-07-28 17:53:33,125 INFO L280 TraceCheckUtils]: 9: Hoare triple {249#(= (bvadd |ULTIMATE.start_main_#t~ret5| (_ bv4294967295 32)) (_ bv0 32))} assume 0bv32 == main_#t~ret5;havoc main_#t~ret5; {218#false} is VALID [2020-07-28 17:53:33,126 INFO L280 TraceCheckUtils]: 10: Hoare triple {218#false} assume !false; {218#false} is VALID [2020-07-28 17:53:33,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:53:33,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 17:53:33,283 INFO L280 TraceCheckUtils]: 10: Hoare triple {218#false} assume !false; {218#false} is VALID [2020-07-28 17:53:33,284 INFO L280 TraceCheckUtils]: 9: Hoare triple {259#(not (= |ULTIMATE.start_main_#t~ret5| (_ bv0 32)))} assume 0bv32 == main_#t~ret5;havoc main_#t~ret5; {218#false} is VALID [2020-07-28 17:53:33,285 INFO L280 TraceCheckUtils]: 8: Hoare triple {263#(not (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|))} main_#t~ret5 := isnan_float_#res; {259#(not (= |ULTIMATE.start_main_#t~ret5| (_ bv0 32)))} is VALID [2020-07-28 17:53:33,286 INFO L280 TraceCheckUtils]: 7: Hoare triple {267#(not (fp.eq |ULTIMATE.start_floor_float_#res| |ULTIMATE.start_floor_float_#res|))} main_#t~ret4 := floor_float_#res;main_~res~0 := main_#t~ret4;havoc main_#t~ret4;isnan_float_#in~x := main_~res~0;havoc isnan_float_#res;havoc isnan_float_~x;isnan_float_~x := isnan_float_#in~x;isnan_float_#res := (if !~fp.eq~FLOAT(isnan_float_~x, isnan_float_~x) then 1bv32 else 0bv32); {263#(not (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|))} is VALID [2020-07-28 17:53:33,287 INFO L280 TraceCheckUtils]: 6: Hoare triple {271#(not (fp.eq ULTIMATE.start_floor_float_~x ULTIMATE.start_floor_float_~x))} assume !!~bvult32(floor_float_~ix~0, 2139095040bv32);floor_float_#res := floor_float_~x; {267#(not (fp.eq |ULTIMATE.start_floor_float_#res| |ULTIMATE.start_floor_float_#res|))} is VALID [2020-07-28 17:53:33,288 INFO L280 TraceCheckUtils]: 5: Hoare triple {271#(not (fp.eq ULTIMATE.start_floor_float_~x ULTIMATE.start_floor_float_~x))} assume !~bvslt32(floor_float_~j0~0, 23bv32); {271#(not (fp.eq ULTIMATE.start_floor_float_~x ULTIMATE.start_floor_float_~x))} is VALID [2020-07-28 17:53:33,289 INFO L280 TraceCheckUtils]: 4: Hoare triple {271#(not (fp.eq ULTIMATE.start_floor_float_~x ULTIMATE.start_floor_float_~x))} floor_float_~ix~0 := ~bvand32(2147483647bv32, floor_float_~i0~0);floor_float_~j0~0 := ~bvsub32(~bvlshr32(floor_float_~ix~0, 23bv32), 127bv32); {271#(not (fp.eq ULTIMATE.start_floor_float_~x ULTIMATE.start_floor_float_~x))} is VALID [2020-07-28 17:53:33,290 INFO L280 TraceCheckUtils]: 3: Hoare triple {271#(not (fp.eq ULTIMATE.start_floor_float_~x ULTIMATE.start_floor_float_~x))} goto; {271#(not (fp.eq ULTIMATE.start_floor_float_~x ULTIMATE.start_floor_float_~x))} is VALID [2020-07-28 17:53:33,291 INFO L280 TraceCheckUtils]: 2: Hoare triple {271#(not (fp.eq ULTIMATE.start_floor_float_~x ULTIMATE.start_floor_float_~x))} call floor_float_~#gf_u~0.base, floor_float_~#gf_u~0.offset := #Ultimate.allocOnStack(4bv32);call write~intFLOATTYPE4(floor_float_~x, floor_float_~#gf_u~0.base, floor_float_~#gf_u~0.offset, 4bv32);call floor_float_#t~mem0 := read~intINTTYPE4(floor_float_~#gf_u~0.base, floor_float_~#gf_u~0.offset, 4bv32);floor_float_~i0~0 := floor_float_#t~mem0;call write~intFLOATTYPE4(floor_float_#t~union1, floor_float_~#gf_u~0.base, floor_float_~#gf_u~0.offset, 4bv32);havoc floor_float_#t~union1;havoc floor_float_#t~mem0;call ULTIMATE.dealloc(floor_float_~#gf_u~0.base, floor_float_~#gf_u~0.offset);havoc floor_float_~#gf_u~0.base, floor_float_~#gf_u~0.offset; {271#(not (fp.eq ULTIMATE.start_floor_float_~x ULTIMATE.start_floor_float_~x))} is VALID [2020-07-28 17:53:33,294 INFO L280 TraceCheckUtils]: 1: Hoare triple {217#true} havoc main_#res;havoc main_#t~ret4, main_#t~ret5, main_~x~0, main_~res~0;main_~x~0 := ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~FLOAT(), ~Pluszero~FLOAT());floor_float_#in~x := main_~x~0;havoc floor_float_#res;havoc floor_float_#t~mem0, floor_float_#t~union1, floor_float_~#gf_u~0.base, floor_float_~#gf_u~0.offset, floor_float_#t~mem2, floor_float_#t~union3, floor_float_~#sf_u~0.base, floor_float_~#sf_u~0.offset, floor_float_~x, floor_float_~i0~0, floor_float_~j0~0, floor_float_~i~0, floor_float_~ix~0;floor_float_~x := floor_float_#in~x;havoc floor_float_~i0~0;havoc floor_float_~j0~0;havoc floor_float_~i~0;havoc floor_float_~ix~0; {271#(not (fp.eq ULTIMATE.start_floor_float_~x ULTIMATE.start_floor_float_~x))} is VALID [2020-07-28 17:53:33,294 INFO L280 TraceCheckUtils]: 0: Hoare triple {217#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;~huge_floor~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 1.0E30)); {217#true} is VALID [2020-07-28 17:53:33,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:53:33,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [406546833] [2020-07-28 17:53:33,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:53:33,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-07-28 17:53:33,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104286882] [2020-07-28 17:53:33,299 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2020-07-28 17:53:33,299 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:53:33,300 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 10 states. [2020-07-28 17:53:33,353 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:53:33,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-28 17:53:33,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 17:53:33,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-28 17:53:33,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-07-28 17:53:33,355 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand 10 states. [2020-07-28 17:53:35,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:53:35,150 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2020-07-28 17:53:35,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-28 17:53:35,151 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2020-07-28 17:53:35,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:53:35,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-28 17:53:35,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 41 transitions. [2020-07-28 17:53:35,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-28 17:53:35,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 41 transitions. [2020-07-28 17:53:35,155 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 41 transitions. [2020-07-28 17:53:35,359 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 41 edges. 41 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:53:35,360 INFO L225 Difference]: With dead ends: 34 [2020-07-28 17:53:35,360 INFO L226 Difference]: Without dead ends: 18 [2020-07-28 17:53:35,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-07-28 17:53:35,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-28 17:53:35,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-07-28 17:53:35,366 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:53:35,366 INFO L82 GeneralOperation]: Start isEquivalent. First operand 18 states. Second operand 18 states. [2020-07-28 17:53:35,366 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand 18 states. [2020-07-28 17:53:35,367 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 18 states. [2020-07-28 17:53:35,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:53:35,368 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-07-28 17:53:35,369 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-07-28 17:53:35,369 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:53:35,369 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:53:35,370 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand 18 states. [2020-07-28 17:53:35,370 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 18 states. [2020-07-28 17:53:35,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:53:35,371 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-07-28 17:53:35,372 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-07-28 17:53:35,372 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:53:35,372 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:53:35,372 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:53:35,373 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:53:35,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-28 17:53:35,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-07-28 17:53:35,374 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2020-07-28 17:53:35,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:53:35,375 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-07-28 17:53:35,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-28 17:53:35,375 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-07-28 17:53:35,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-28 17:53:35,376 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:53:35,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:53:35,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-07-28 17:53:35,589 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:53:35,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:53:35,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1612289523, now seen corresponding path program 1 times [2020-07-28 17:53:35,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:53:35,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1271202997] [2020-07-28 17:53:35,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-07-28 17:53:35,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:53:35,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-28 17:53:35,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:53:35,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 17:53:35,851 INFO L280 TraceCheckUtils]: 0: Hoare triple {394#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;~huge_floor~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 1.0E30)); {394#true} is VALID [2020-07-28 17:53:35,853 INFO L280 TraceCheckUtils]: 1: Hoare triple {394#true} havoc main_#res;havoc main_#t~ret4, main_#t~ret5, main_~x~0, main_~res~0;main_~x~0 := ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~FLOAT(), ~Pluszero~FLOAT());floor_float_#in~x := main_~x~0;havoc floor_float_#res;havoc floor_float_#t~mem0, floor_float_#t~union1, floor_float_~#gf_u~0.base, floor_float_~#gf_u~0.offset, floor_float_#t~mem2, floor_float_#t~union3, floor_float_~#sf_u~0.base, floor_float_~#sf_u~0.offset, floor_float_~x, floor_float_~i0~0, floor_float_~j0~0, floor_float_~i~0, floor_float_~ix~0;floor_float_~x := floor_float_#in~x;havoc floor_float_~i0~0;havoc floor_float_~j0~0;havoc floor_float_~i~0;havoc floor_float_~ix~0; {402#(exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_floor_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} is VALID [2020-07-28 17:53:36,291 INFO L280 TraceCheckUtils]: 2: Hoare triple {402#(exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_floor_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} call floor_float_~#gf_u~0.base, floor_float_~#gf_u~0.offset := #Ultimate.allocOnStack(4bv32);call write~intFLOATTYPE4(floor_float_~x, floor_float_~#gf_u~0.base, floor_float_~#gf_u~0.offset, 4bv32);call floor_float_#t~mem0 := read~intINTTYPE4(floor_float_~#gf_u~0.base, floor_float_~#gf_u~0.offset, 4bv32);floor_float_~i0~0 := floor_float_#t~mem0;call write~intFLOATTYPE4(floor_float_#t~union1, floor_float_~#gf_u~0.base, floor_float_~#gf_u~0.offset, 4bv32);havoc floor_float_#t~union1;havoc floor_float_#t~mem0;call ULTIMATE.dealloc(floor_float_~#gf_u~0.base, floor_float_~#gf_u~0.offset);havoc floor_float_~#gf_u~0.base, floor_float_~#gf_u~0.offset; {406#(exists ((currentRoundingMode RoundingMode)) (= (fp ((_ extract 31 31) ULTIMATE.start_floor_float_~i0~0) ((_ extract 30 23) ULTIMATE.start_floor_float_~i0~0) ((_ extract 22 0) ULTIMATE.start_floor_float_~i0~0)) (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} is VALID [2020-07-28 17:53:36,292 INFO L280 TraceCheckUtils]: 3: Hoare triple {406#(exists ((currentRoundingMode RoundingMode)) (= (fp ((_ extract 31 31) ULTIMATE.start_floor_float_~i0~0) ((_ extract 30 23) ULTIMATE.start_floor_float_~i0~0) ((_ extract 22 0) ULTIMATE.start_floor_float_~i0~0)) (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} goto; {406#(exists ((currentRoundingMode RoundingMode)) (= (fp ((_ extract 31 31) ULTIMATE.start_floor_float_~i0~0) ((_ extract 30 23) ULTIMATE.start_floor_float_~i0~0) ((_ extract 22 0) ULTIMATE.start_floor_float_~i0~0)) (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} is VALID [2020-07-28 17:53:36,297 INFO L280 TraceCheckUtils]: 4: Hoare triple {406#(exists ((currentRoundingMode RoundingMode)) (= (fp ((_ extract 31 31) ULTIMATE.start_floor_float_~i0~0) ((_ extract 30 23) ULTIMATE.start_floor_float_~i0~0) ((_ extract 22 0) ULTIMATE.start_floor_float_~i0~0)) (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} floor_float_~ix~0 := ~bvand32(2147483647bv32, floor_float_~i0~0);floor_float_~j0~0 := ~bvsub32(~bvlshr32(floor_float_~ix~0, 23bv32), 127bv32); {413#(exists ((ULTIMATE.start_floor_float_~i0~0 (_ BitVec 32)) (currentRoundingMode RoundingMode)) (and (= (bvadd (bvlshr (bvand (_ bv2147483647 32) ULTIMATE.start_floor_float_~i0~0) (_ bv23 32)) (_ bv4294967169 32)) ULTIMATE.start_floor_float_~j0~0) (= (fp ((_ extract 31 31) ULTIMATE.start_floor_float_~i0~0) ((_ extract 30 23) ULTIMATE.start_floor_float_~i0~0) ((_ extract 22 0) ULTIMATE.start_floor_float_~i0~0)) (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))))} is VALID [2020-07-28 17:53:36,301 INFO L280 TraceCheckUtils]: 5: Hoare triple {413#(exists ((ULTIMATE.start_floor_float_~i0~0 (_ BitVec 32)) (currentRoundingMode RoundingMode)) (and (= (bvadd (bvlshr (bvand (_ bv2147483647 32) ULTIMATE.start_floor_float_~i0~0) (_ bv23 32)) (_ bv4294967169 32)) ULTIMATE.start_floor_float_~j0~0) (= (fp ((_ extract 31 31) ULTIMATE.start_floor_float_~i0~0) ((_ extract 30 23) ULTIMATE.start_floor_float_~i0~0) ((_ extract 22 0) ULTIMATE.start_floor_float_~i0~0)) (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))))} assume ~bvslt32(floor_float_~j0~0, 23bv32); {395#false} is VALID [2020-07-28 17:53:36,301 INFO L280 TraceCheckUtils]: 6: Hoare triple {395#false} assume ~bvslt32(floor_float_~j0~0, 0bv32); {395#false} is VALID [2020-07-28 17:53:36,302 INFO L280 TraceCheckUtils]: 7: Hoare triple {395#false} assume !~fp.gt~FLOAT(~fp.add~FLOAT(currentRoundingMode, ~huge_floor~0, floor_float_~x), ~convertDOUBLEToFLOAT(currentRoundingMode, ~Pluszero~DOUBLE())); {395#false} is VALID [2020-07-28 17:53:36,302 INFO L280 TraceCheckUtils]: 8: Hoare triple {395#false} call floor_float_~#sf_u~0.base, floor_float_~#sf_u~0.offset := #Ultimate.allocOnStack(4bv32);call write~intINTTYPE4(floor_float_~i0~0, floor_float_~#sf_u~0.base, floor_float_~#sf_u~0.offset, 4bv32);call floor_float_#t~mem2 := read~intFLOATTYPE4(floor_float_~#sf_u~0.base, floor_float_~#sf_u~0.offset, 4bv32);floor_float_~x := floor_float_#t~mem2;call write~intINTTYPE4(floor_float_#t~union3, floor_float_~#sf_u~0.base, floor_float_~#sf_u~0.offset, 4bv32);havoc floor_float_#t~union3;havoc floor_float_#t~mem2;call ULTIMATE.dealloc(floor_float_~#sf_u~0.base, floor_float_~#sf_u~0.offset);havoc floor_float_~#sf_u~0.base, floor_float_~#sf_u~0.offset; {395#false} is VALID [2020-07-28 17:53:36,302 INFO L280 TraceCheckUtils]: 9: Hoare triple {395#false} goto; {395#false} is VALID [2020-07-28 17:53:36,303 INFO L280 TraceCheckUtils]: 10: Hoare triple {395#false} floor_float_#res := floor_float_~x; {395#false} is VALID [2020-07-28 17:53:36,303 INFO L280 TraceCheckUtils]: 11: Hoare triple {395#false} main_#t~ret4 := floor_float_#res;main_~res~0 := main_#t~ret4;havoc main_#t~ret4;isnan_float_#in~x := main_~res~0;havoc isnan_float_#res;havoc isnan_float_~x;isnan_float_~x := isnan_float_#in~x;isnan_float_#res := (if !~fp.eq~FLOAT(isnan_float_~x, isnan_float_~x) then 1bv32 else 0bv32); {395#false} is VALID [2020-07-28 17:53:36,303 INFO L280 TraceCheckUtils]: 12: Hoare triple {395#false} main_#t~ret5 := isnan_float_#res; {395#false} is VALID [2020-07-28 17:53:36,304 INFO L280 TraceCheckUtils]: 13: Hoare triple {395#false} assume 0bv32 == main_#t~ret5;havoc main_#t~ret5; {395#false} is VALID [2020-07-28 17:53:36,304 INFO L280 TraceCheckUtils]: 14: Hoare triple {395#false} assume !false; {395#false} is VALID [2020-07-28 17:53:36,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:53:36,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 17:53:36,508 INFO L280 TraceCheckUtils]: 14: Hoare triple {395#false} assume !false; {395#false} is VALID [2020-07-28 17:53:36,509 INFO L280 TraceCheckUtils]: 13: Hoare triple {395#false} assume 0bv32 == main_#t~ret5;havoc main_#t~ret5; {395#false} is VALID [2020-07-28 17:53:36,509 INFO L280 TraceCheckUtils]: 12: Hoare triple {395#false} main_#t~ret5 := isnan_float_#res; {395#false} is VALID [2020-07-28 17:53:36,509 INFO L280 TraceCheckUtils]: 11: Hoare triple {395#false} main_#t~ret4 := floor_float_#res;main_~res~0 := main_#t~ret4;havoc main_#t~ret4;isnan_float_#in~x := main_~res~0;havoc isnan_float_#res;havoc isnan_float_~x;isnan_float_~x := isnan_float_#in~x;isnan_float_#res := (if !~fp.eq~FLOAT(isnan_float_~x, isnan_float_~x) then 1bv32 else 0bv32); {395#false} is VALID [2020-07-28 17:53:36,510 INFO L280 TraceCheckUtils]: 10: Hoare triple {395#false} floor_float_#res := floor_float_~x; {395#false} is VALID [2020-07-28 17:53:36,510 INFO L280 TraceCheckUtils]: 9: Hoare triple {395#false} goto; {395#false} is VALID [2020-07-28 17:53:36,510 INFO L280 TraceCheckUtils]: 8: Hoare triple {395#false} call floor_float_~#sf_u~0.base, floor_float_~#sf_u~0.offset := #Ultimate.allocOnStack(4bv32);call write~intINTTYPE4(floor_float_~i0~0, floor_float_~#sf_u~0.base, floor_float_~#sf_u~0.offset, 4bv32);call floor_float_#t~mem2 := read~intFLOATTYPE4(floor_float_~#sf_u~0.base, floor_float_~#sf_u~0.offset, 4bv32);floor_float_~x := floor_float_#t~mem2;call write~intINTTYPE4(floor_float_#t~union3, floor_float_~#sf_u~0.base, floor_float_~#sf_u~0.offset, 4bv32);havoc floor_float_#t~union3;havoc floor_float_#t~mem2;call ULTIMATE.dealloc(floor_float_~#sf_u~0.base, floor_float_~#sf_u~0.offset);havoc floor_float_~#sf_u~0.base, floor_float_~#sf_u~0.offset; {395#false} is VALID [2020-07-28 17:53:36,511 INFO L280 TraceCheckUtils]: 7: Hoare triple {395#false} assume !~fp.gt~FLOAT(~fp.add~FLOAT(currentRoundingMode, ~huge_floor~0, floor_float_~x), ~convertDOUBLEToFLOAT(currentRoundingMode, ~Pluszero~DOUBLE())); {395#false} is VALID [2020-07-28 17:53:36,511 INFO L280 TraceCheckUtils]: 6: Hoare triple {395#false} assume ~bvslt32(floor_float_~j0~0, 0bv32); {395#false} is VALID [2020-07-28 17:53:36,513 INFO L280 TraceCheckUtils]: 5: Hoare triple {471#(not (bvslt ULTIMATE.start_floor_float_~j0~0 (_ bv23 32)))} assume ~bvslt32(floor_float_~j0~0, 23bv32); {395#false} is VALID [2020-07-28 17:53:36,516 INFO L280 TraceCheckUtils]: 4: Hoare triple {475#(not (bvslt (bvadd (bvlshr (bvand (_ bv2147483647 32) ULTIMATE.start_floor_float_~i0~0) (_ bv23 32)) (_ bv4294967169 32)) (_ bv23 32)))} floor_float_~ix~0 := ~bvand32(2147483647bv32, floor_float_~i0~0);floor_float_~j0~0 := ~bvsub32(~bvlshr32(floor_float_~ix~0, 23bv32), 127bv32); {471#(not (bvslt ULTIMATE.start_floor_float_~j0~0 (_ bv23 32)))} is VALID [2020-07-28 17:53:36,516 INFO L280 TraceCheckUtils]: 3: Hoare triple {475#(not (bvslt (bvadd (bvlshr (bvand (_ bv2147483647 32) ULTIMATE.start_floor_float_~i0~0) (_ bv23 32)) (_ bv4294967169 32)) (_ bv23 32)))} goto; {475#(not (bvslt (bvadd (bvlshr (bvand (_ bv2147483647 32) ULTIMATE.start_floor_float_~i0~0) (_ bv23 32)) (_ bv4294967169 32)) (_ bv23 32)))} is VALID [2020-07-28 17:53:36,522 INFO L280 TraceCheckUtils]: 2: Hoare triple {482#(forall ((v_ULTIMATE.start_floor_float_~i0~0_19 (_ BitVec 32))) (or (not (bvslt (bvadd (bvlshr (bvand (_ bv2147483647 32) v_ULTIMATE.start_floor_float_~i0~0_19) (_ bv23 32)) (_ bv4294967169 32)) (_ bv23 32))) (not (= (fp ((_ extract 31 31) v_ULTIMATE.start_floor_float_~i0~0_19) ((_ extract 30 23) v_ULTIMATE.start_floor_float_~i0~0_19) ((_ extract 22 0) v_ULTIMATE.start_floor_float_~i0~0_19)) ULTIMATE.start_floor_float_~x))))} call floor_float_~#gf_u~0.base, floor_float_~#gf_u~0.offset := #Ultimate.allocOnStack(4bv32);call write~intFLOATTYPE4(floor_float_~x, floor_float_~#gf_u~0.base, floor_float_~#gf_u~0.offset, 4bv32);call floor_float_#t~mem0 := read~intINTTYPE4(floor_float_~#gf_u~0.base, floor_float_~#gf_u~0.offset, 4bv32);floor_float_~i0~0 := floor_float_#t~mem0;call write~intFLOATTYPE4(floor_float_#t~union1, floor_float_~#gf_u~0.base, floor_float_~#gf_u~0.offset, 4bv32);havoc floor_float_#t~union1;havoc floor_float_#t~mem0;call ULTIMATE.dealloc(floor_float_~#gf_u~0.base, floor_float_~#gf_u~0.offset);havoc floor_float_~#gf_u~0.base, floor_float_~#gf_u~0.offset; {475#(not (bvslt (bvadd (bvlshr (bvand (_ bv2147483647 32) ULTIMATE.start_floor_float_~i0~0) (_ bv23 32)) (_ bv4294967169 32)) (_ bv23 32)))} is VALID [2020-07-28 17:53:36,526 INFO L280 TraceCheckUtils]: 1: Hoare triple {394#true} havoc main_#res;havoc main_#t~ret4, main_#t~ret5, main_~x~0, main_~res~0;main_~x~0 := ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~FLOAT(), ~Pluszero~FLOAT());floor_float_#in~x := main_~x~0;havoc floor_float_#res;havoc floor_float_#t~mem0, floor_float_#t~union1, floor_float_~#gf_u~0.base, floor_float_~#gf_u~0.offset, floor_float_#t~mem2, floor_float_#t~union3, floor_float_~#sf_u~0.base, floor_float_~#sf_u~0.offset, floor_float_~x, floor_float_~i0~0, floor_float_~j0~0, floor_float_~i~0, floor_float_~ix~0;floor_float_~x := floor_float_#in~x;havoc floor_float_~i0~0;havoc floor_float_~j0~0;havoc floor_float_~i~0;havoc floor_float_~ix~0; {482#(forall ((v_ULTIMATE.start_floor_float_~i0~0_19 (_ BitVec 32))) (or (not (bvslt (bvadd (bvlshr (bvand (_ bv2147483647 32) v_ULTIMATE.start_floor_float_~i0~0_19) (_ bv23 32)) (_ bv4294967169 32)) (_ bv23 32))) (not (= (fp ((_ extract 31 31) v_ULTIMATE.start_floor_float_~i0~0_19) ((_ extract 30 23) v_ULTIMATE.start_floor_float_~i0~0_19) ((_ extract 22 0) v_ULTIMATE.start_floor_float_~i0~0_19)) ULTIMATE.start_floor_float_~x))))} is VALID [2020-07-28 17:53:36,527 INFO L280 TraceCheckUtils]: 0: Hoare triple {394#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;~huge_floor~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 1.0E30)); {394#true} is VALID [2020-07-28 17:53:36,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:53:36,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1271202997] [2020-07-28 17:53:36,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:53:36,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-07-28 17:53:36,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054029073] [2020-07-28 17:53:36,529 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-07-28 17:53:36,530 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:53:36,530 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states. [2020-07-28 17:53:36,595 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:53:36,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-28 17:53:36,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 17:53:36,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-28 17:53:36,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-07-28 17:53:36,597 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 8 states. [2020-07-28 17:53:36,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:53:36,822 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-07-28 17:53:36,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-28 17:53:36,822 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-07-28 17:53:36,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:53:36,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-28 17:53:36,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2020-07-28 17:53:36,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-28 17:53:36,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2020-07-28 17:53:36,825 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 18 transitions. [2020-07-28 17:53:36,893 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:53:36,893 INFO L225 Difference]: With dead ends: 18 [2020-07-28 17:53:36,893 INFO L226 Difference]: Without dead ends: 0 [2020-07-28 17:53:36,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-07-28 17:53:36,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-28 17:53:36,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-28 17:53:36,895 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:53:36,895 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-28 17:53:36,895 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:53:36,895 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:53:36,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:53:36,895 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:53:36,896 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:53:36,896 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:53:36,896 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:53:36,896 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:53:36,896 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:53:36,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:53:36,897 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:53:36,897 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:53:36,897 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:53:36,897 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:53:36,897 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:53:36,897 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:53:36,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-28 17:53:36,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-28 17:53:36,898 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-07-28 17:53:36,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:53:36,898 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-28 17:53:36,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-28 17:53:36,898 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:53:36,898 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:53:37,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-07-28 17:53:37,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-28 17:53:37,233 INFO L268 CegarLoopResult]: For program point L27(lines 27 31) no Hoare annotation was computed. [2020-07-28 17:53:37,233 INFO L268 CegarLoopResult]: For program point L44(lines 44 47) no Hoare annotation was computed. [2020-07-28 17:53:37,233 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-07-28 17:53:37,234 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-28 17:53:37,234 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-28 17:53:37,234 INFO L268 CegarLoopResult]: For program point L24(lines 24 48) no Hoare annotation was computed. [2020-07-28 17:53:37,234 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 71) no Hoare annotation was computed. [2020-07-28 17:53:37,234 INFO L268 CegarLoopResult]: For program point L49(lines 49 53) no Hoare annotation was computed. [2020-07-28 17:53:37,234 INFO L268 CegarLoopResult]: For program point L49-1(lines 14 55) no Hoare annotation was computed. [2020-07-28 17:53:37,234 INFO L268 CegarLoopResult]: For program point L49-2(lines 49 53) no Hoare annotation was computed. [2020-07-28 17:53:37,234 INFO L268 CegarLoopResult]: For program point L70(lines 70 73) no Hoare annotation was computed. [2020-07-28 17:53:37,235 INFO L268 CegarLoopResult]: For program point L37(lines 37 41) no Hoare annotation was computed. [2020-07-28 17:53:37,235 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-28 17:53:37,235 INFO L268 CegarLoopResult]: For program point L29(lines 29 31) no Hoare annotation was computed. [2020-07-28 17:53:37,235 INFO L264 CegarLoopResult]: At program point L58(line 58) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_floor_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq |ULTIMATE.start_floor_float_#res| |ULTIMATE.start_floor_float_#res|))) [2020-07-28 17:53:37,235 INFO L268 CegarLoopResult]: For program point L25(lines 25 42) no Hoare annotation was computed. [2020-07-28 17:53:37,236 INFO L264 CegarLoopResult]: At program point L54(lines 14 55) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_floor_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (not (fp.eq |ULTIMATE.start_floor_float_#res| |ULTIMATE.start_floor_float_#res|))) [2020-07-28 17:53:37,236 INFO L268 CegarLoopResult]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2020-07-28 17:53:37,236 INFO L264 CegarLoopResult]: At program point L17-2(lines 17 21) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_floor_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) [2020-07-28 17:53:37,236 INFO L268 CegarLoopResult]: For program point L17-3(lines 17 21) no Hoare annotation was computed. [2020-07-28 17:53:37,238 INFO L271 CegarLoopResult]: At program point L75(lines 60 76) the Hoare annotation is: true [2020-07-28 17:53:37,238 INFO L268 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2020-07-28 17:53:37,238 INFO L268 CegarLoopResult]: For program point L38(lines 38 39) no Hoare annotation was computed. [2020-07-28 17:53:37,238 INFO L268 CegarLoopResult]: For program point L38-2(lines 38 39) no Hoare annotation was computed. [2020-07-28 17:53:37,238 INFO L268 CegarLoopResult]: For program point L26(lines 26 32) no Hoare annotation was computed. [2020-07-28 17:53:37,238 INFO L268 CegarLoopResult]: For program point L35(lines 35 36) no Hoare annotation was computed. [2020-07-28 17:53:37,243 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:53:37,243 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 17:53:37,244 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-28 17:53:37,244 WARN L170 areAnnotationChecker]: L17-3 has no Hoare annotation [2020-07-28 17:53:37,244 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-28 17:53:37,244 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-28 17:53:37,244 WARN L170 areAnnotationChecker]: L17-3 has no Hoare annotation [2020-07-28 17:53:37,244 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2020-07-28 17:53:37,244 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2020-07-28 17:53:37,244 WARN L170 areAnnotationChecker]: L25 has no Hoare annotation [2020-07-28 17:53:37,244 WARN L170 areAnnotationChecker]: L25 has no Hoare annotation [2020-07-28 17:53:37,245 WARN L170 areAnnotationChecker]: L44 has no Hoare annotation [2020-07-28 17:53:37,245 WARN L170 areAnnotationChecker]: L44 has no Hoare annotation [2020-07-28 17:53:37,245 WARN L170 areAnnotationChecker]: L26 has no Hoare annotation [2020-07-28 17:53:37,245 WARN L170 areAnnotationChecker]: L26 has no Hoare annotation [2020-07-28 17:53:37,245 WARN L170 areAnnotationChecker]: L35 has no Hoare annotation [2020-07-28 17:53:37,245 WARN L170 areAnnotationChecker]: L35 has no Hoare annotation [2020-07-28 17:53:37,247 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2020-07-28 17:53:37,247 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2020-07-28 17:53:37,247 WARN L170 areAnnotationChecker]: L49-1 has no Hoare annotation [2020-07-28 17:53:37,247 WARN L170 areAnnotationChecker]: L49-1 has no Hoare annotation [2020-07-28 17:53:37,247 WARN L170 areAnnotationChecker]: L37 has no Hoare annotation [2020-07-28 17:53:37,247 WARN L170 areAnnotationChecker]: L37 has no Hoare annotation [2020-07-28 17:53:37,247 WARN L170 areAnnotationChecker]: L70 has no Hoare annotation [2020-07-28 17:53:37,248 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2020-07-28 17:53:37,248 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2020-07-28 17:53:37,248 WARN L170 areAnnotationChecker]: L49 has no Hoare annotation [2020-07-28 17:53:37,248 WARN L170 areAnnotationChecker]: L49 has no Hoare annotation [2020-07-28 17:53:37,248 WARN L170 areAnnotationChecker]: L49-2 has no Hoare annotation [2020-07-28 17:53:37,251 WARN L170 areAnnotationChecker]: L38 has no Hoare annotation [2020-07-28 17:53:37,252 WARN L170 areAnnotationChecker]: L38 has no Hoare annotation [2020-07-28 17:53:37,252 WARN L170 areAnnotationChecker]: L70 has no Hoare annotation [2020-07-28 17:53:37,252 WARN L170 areAnnotationChecker]: L70 has no Hoare annotation [2020-07-28 17:53:37,252 WARN L170 areAnnotationChecker]: L38-2 has no Hoare annotation [2020-07-28 17:53:37,252 WARN L170 areAnnotationChecker]: L71 has no Hoare annotation [2020-07-28 17:53:37,252 WARN L170 areAnnotationChecker]: L71 has no Hoare annotation [2020-07-28 17:53:37,252 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:53:37,252 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:53:37,253 INFO L163 areAnnotationChecker]: CFG has 1 edges. 1 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 17:53:37,259 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:53:37,264 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:53:37,269 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:53:37,271 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:53:37,275 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:53:37,276 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:53:37,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:53:37 BoogieIcfgContainer [2020-07-28 17:53:37,285 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:53:37,286 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:53:37,286 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:53:37,286 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:53:37,289 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:53:31" (3/4) ... [2020-07-28 17:53:37,294 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-07-28 17:53:37,312 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-07-28 17:53:37,312 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-07-28 17:53:37,312 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-07-28 17:53:37,345 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2020-07-28 17:53:37,346 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && !~fp.eq~FLOAT(\result, \result) [2020-07-28 17:53:37,346 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && 1bv32 == \result) && !~fp.eq~FLOAT(\result, \result) [2020-07-28 17:53:37,395 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 17:53:37,395 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:53:37,398 INFO L168 Benchmark]: Toolchain (without parser) took 7223.39 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.1 MB). Free memory was 961.6 MB in the beginning and 829.1 MB in the end (delta: 132.5 MB). Peak memory consumption was 232.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:53:37,398 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:53:37,399 INFO L168 Benchmark]: CACSL2BoogieTranslator took 408.61 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.1 MB). Free memory was 961.6 MB in the beginning and 1.1 GB in the end (delta: -133.5 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2020-07-28 17:53:37,399 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.10 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. [2020-07-28 17:53:37,400 INFO L168 Benchmark]: Boogie Preprocessor took 48.38 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. [2020-07-28 17:53:37,400 INFO L168 Benchmark]: RCFGBuilder took 803.23 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: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 11.5 GB. [2020-07-28 17:53:37,400 INFO L168 Benchmark]: TraceAbstraction took 5765.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 829.1 MB in the end (delta: 229.6 MB). Peak memory consumption was 229.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:53:37,401 INFO L168 Benchmark]: Witness Printer took 109.66 ms. Allocated memory is still 1.1 GB. Free memory is still 829.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:53:37,405 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 408.61 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.1 MB). Free memory was 961.6 MB in the beginning and 1.1 GB in the end (delta: -133.5 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 79.10 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 48.38 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 803.23 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: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5765.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 829.1 MB in the end (delta: 229.6 MB). Peak memory consumption was 229.6 MB. Max. memory is 11.5 GB. * Witness Printer took 109.66 ms. Allocated memory is still 1.1 GB. Free memory is still 829.1 MB. There was no memory consumed. 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] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 71]: 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: 17]: Loop Invariant [2020-07-28 17:53:37,411 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:53:37,411 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 58]: Loop Invariant [2020-07-28 17:53:37,412 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:53:37,412 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && 1bv32 == \result) && !~fp.eq~FLOAT(\result, \result) - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant [2020-07-28 17:53:37,413 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:53:37,413 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\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, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 18 SDslu, 65 SDs, 0 SdLazy, 46 SolverSat, 4 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 35 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 5 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 66 ConstructedInterpolants, 11 QuantifiedInterpolants, 2730 SizeOfPredicates, 19 NumberOfNonLiveVariables, 101 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 proved your program to be correct! Received shutdown request...