./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_201c5eed-2431-4dfd-80e8-ca982abcadc4/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_201c5eed-2431-4dfd-80e8-ca982abcadc4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_201c5eed-2431-4dfd-80e8-ca982abcadc4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_201c5eed-2431-4dfd-80e8-ca982abcadc4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i -s /tmp/vcloud-vcloud-master/worker/run_dir_201c5eed-2431-4dfd-80e8-ca982abcadc4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_201c5eed-2431-4dfd-80e8-ca982abcadc4/bin/uautomizer --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 c9c4c4712c0b03f250e94d62f797a284bfa7b46f ........................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_201c5eed-2431-4dfd-80e8-ca982abcadc4/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_201c5eed-2431-4dfd-80e8-ca982abcadc4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_201c5eed-2431-4dfd-80e8-ca982abcadc4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_201c5eed-2431-4dfd-80e8-ca982abcadc4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i -s /tmp/vcloud-vcloud-master/worker/run_dir_201c5eed-2431-4dfd-80e8-ca982abcadc4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_201c5eed-2431-4dfd-80e8-ca982abcadc4/bin/uautomizer --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 c9c4c4712c0b03f250e94d62f797a284bfa7b46f .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 14:40:51,856 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 14:40:51,857 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 14:40:51,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 14:40:51,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 14:40:51,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 14:40:51,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 14:40:51,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 14:40:51,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 14:40:51,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 14:40:51,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 14:40:51,871 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 14:40:51,871 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 14:40:51,872 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 14:40:51,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 14:40:51,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 14:40:51,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 14:40:51,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 14:40:51,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 14:40:51,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 14:40:51,878 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 14:40:51,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 14:40:51,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 14:40:51,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 14:40:51,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 14:40:51,882 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 14:40:51,882 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 14:40:51,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 14:40:51,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 14:40:51,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 14:40:51,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 14:40:51,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 14:40:51,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 14:40:51,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 14:40:51,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 14:40:51,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 14:40:51,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 14:40:51,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 14:40:51,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 14:40:51,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 14:40:51,887 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 14:40:51,888 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_201c5eed-2431-4dfd-80e8-ca982abcadc4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 14:40:51,897 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 14:40:51,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 14:40:51,898 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 14:40:51,898 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 14:40:51,898 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 14:40:51,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 14:40:51,899 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 14:40:51,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 14:40:51,899 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 14:40:51,899 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 14:40:51,899 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 14:40:51,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 14:40:51,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 14:40:51,899 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 14:40:51,900 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 14:40:51,900 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 14:40:51,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 14:40:51,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 14:40:51,900 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 14:40:51,900 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 14:40:51,900 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 14:40:51,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 14:40:51,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 14:40:51,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 14:40:51,901 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 14:40:51,901 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 14:40:51,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 14:40:51,901 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 14:40:51,902 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 14:40:51,902 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_201c5eed-2431-4dfd-80e8-ca982abcadc4/bin/uautomizer 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 -> c9c4c4712c0b03f250e94d62f797a284bfa7b46f [2019-12-07 14:40:52,000 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 14:40:52,010 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 14:40:52,013 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 14:40:52,015 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 14:40:52,015 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 14:40:52,016 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_201c5eed-2431-4dfd-80e8-ca982abcadc4/bin/uautomizer/../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2019-12-07 14:40:52,063 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_201c5eed-2431-4dfd-80e8-ca982abcadc4/bin/uautomizer/data/5d84d81b7/c77ffb86a7b64b51a63e17eeb3c1b5ca/FLAG57adb0c12 [2019-12-07 14:40:52,457 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 14:40:52,458 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_201c5eed-2431-4dfd-80e8-ca982abcadc4/sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2019-12-07 14:40:52,461 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_201c5eed-2431-4dfd-80e8-ca982abcadc4/bin/uautomizer/data/5d84d81b7/c77ffb86a7b64b51a63e17eeb3c1b5ca/FLAG57adb0c12 [2019-12-07 14:40:52,840 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_201c5eed-2431-4dfd-80e8-ca982abcadc4/bin/uautomizer/data/5d84d81b7/c77ffb86a7b64b51a63e17eeb3c1b5ca [2019-12-07 14:40:52,842 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 14:40:52,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 14:40:52,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 14:40:52,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 14:40:52,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 14:40:52,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:40:52" (1/1) ... [2019-12-07 14:40:52,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@736c6b56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:52, skipping insertion in model container [2019-12-07 14:40:52,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:40:52" (1/1) ... [2019-12-07 14:40:52,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 14:40:52,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 14:40:52,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:40:53,004 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 14:40:53,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:40:53,022 INFO L208 MainTranslator]: Completed translation [2019-12-07 14:40:53,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:53 WrapperNode [2019-12-07 14:40:53,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 14:40:53,023 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 14:40:53,023 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 14:40:53,023 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 14:40:53,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:53" (1/1) ... [2019-12-07 14:40:53,032 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:53" (1/1) ... [2019-12-07 14:40:53,043 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 14:40:53,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 14:40:53,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 14:40:53,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 14:40:53,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:53" (1/1) ... [2019-12-07 14:40:53,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:53" (1/1) ... [2019-12-07 14:40:53,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:53" (1/1) ... [2019-12-07 14:40:53,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:53" (1/1) ... [2019-12-07 14:40:53,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:53" (1/1) ... [2019-12-07 14:40:53,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:53" (1/1) ... [2019-12-07 14:40:53,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:53" (1/1) ... [2019-12-07 14:40:53,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 14:40:53,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 14:40:53,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 14:40:53,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 14:40:53,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_201c5eed-2431-4dfd-80e8-ca982abcadc4/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 14:40:53,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 14:40:53,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 14:40:53,178 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 14:40:53,178 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-12-07 14:40:53,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:40:53 BoogieIcfgContainer [2019-12-07 14:40:53,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 14:40:53,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 14:40:53,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 14:40:53,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 14:40:53,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 02:40:52" (1/3) ... [2019-12-07 14:40:53,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@510de34e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:40:53, skipping insertion in model container [2019-12-07 14:40:53,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:53" (2/3) ... [2019-12-07 14:40:53,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@510de34e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:40:53, skipping insertion in model container [2019-12-07 14:40:53,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:40:53" (3/3) ... [2019-12-07 14:40:53,184 INFO L109 eAbstractionObserver]: Analyzing ICFG Float_div.i [2019-12-07 14:40:53,190 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 14:40:53,194 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 14:40:53,201 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 14:40:53,215 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 14:40:53,215 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 14:40:53,215 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 14:40:53,215 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 14:40:53,215 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 14:40:53,215 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 14:40:53,215 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 14:40:53,215 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 14:40:53,224 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-12-07 14:40:53,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 14:40:53,227 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:40:53,227 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 14:40:53,228 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:40:53,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:40:53,231 INFO L82 PathProgramCache]: Analyzing trace with hash 29805000, now seen corresponding path program 1 times [2019-12-07 14:40:53,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:40:53,237 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038535046] [2019-12-07 14:40:53,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:40:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:40:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:40:53,308 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:40:53,308 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 14:40:53,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 02:40:53 BoogieIcfgContainer [2019-12-07 14:40:53,318 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 14:40:53,319 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 14:40:53,319 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 14:40:53,319 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 14:40:53,319 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:40:53" (3/4) ... [2019-12-07 14:40:53,322 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 14:40:53,322 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 14:40:53,324 INFO L168 Benchmark]: Toolchain (without parser) took 480.04 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -118.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:40:53,324 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:40:53,325 INFO L168 Benchmark]: CACSL2BoogieTranslator took 178.78 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -147.0 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. [2019-12-07 14:40:53,325 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.84 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:40:53,325 INFO L168 Benchmark]: Boogie Preprocessor took 12.03 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:40:53,326 INFO L168 Benchmark]: RCFGBuilder took 124.06 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: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. [2019-12-07 14:40:53,326 INFO L168 Benchmark]: TraceAbstraction took 138.82 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: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 14:40:53,327 INFO L168 Benchmark]: Witness Printer took 3.25 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:40:53,329 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 178.78 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -147.0 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.84 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.03 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 124.06 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: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 138.82 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: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Witness Printer took 3.25 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 2]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 18, overapproximation of someBinaryArithmeticFLOAToperation at line 10. Possible FailurePath: [L9] float x = 1.0f; [L10] float x1 = x/2.5f; [L12] COND FALSE !(x1 != x) [L2] COND TRUE !(cond) [L2] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-12-07 14:40:54,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 14:40:54,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 14:40:54,688 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 14:40:54,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 14:40:54,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 14:40:54,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 14:40:54,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 14:40:54,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 14:40:54,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 14:40:54,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 14:40:54,694 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 14:40:54,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 14:40:54,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 14:40:54,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 14:40:54,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 14:40:54,697 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 14:40:54,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 14:40:54,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 14:40:54,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 14:40:54,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 14:40:54,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 14:40:54,703 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 14:40:54,704 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 14:40:54,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 14:40:54,706 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 14:40:54,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 14:40:54,707 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 14:40:54,707 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 14:40:54,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 14:40:54,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 14:40:54,708 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 14:40:54,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 14:40:54,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 14:40:54,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 14:40:54,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 14:40:54,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 14:40:54,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 14:40:54,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 14:40:54,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 14:40:54,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 14:40:54,713 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_201c5eed-2431-4dfd-80e8-ca982abcadc4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 14:40:54,722 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 14:40:54,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 14:40:54,723 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 14:40:54,723 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 14:40:54,723 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 14:40:54,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 14:40:54,724 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 14:40:54,724 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 14:40:54,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 14:40:54,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 14:40:54,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 14:40:54,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 14:40:54,725 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 14:40:54,725 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 14:40:54,725 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 14:40:54,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 14:40:54,725 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 14:40:54,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 14:40:54,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 14:40:54,726 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 14:40:54,726 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 14:40:54,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 14:40:54,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 14:40:54,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 14:40:54,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 14:40:54,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 14:40:54,727 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 14:40:54,727 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 14:40:54,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 14:40:54,727 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 14:40:54,727 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 14:40:54,727 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_201c5eed-2431-4dfd-80e8-ca982abcadc4/bin/uautomizer 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 -> c9c4c4712c0b03f250e94d62f797a284bfa7b46f [2019-12-07 14:40:54,891 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 14:40:54,901 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 14:40:54,904 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 14:40:54,905 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 14:40:54,906 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 14:40:54,906 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_201c5eed-2431-4dfd-80e8-ca982abcadc4/bin/uautomizer/../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2019-12-07 14:40:54,944 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_201c5eed-2431-4dfd-80e8-ca982abcadc4/bin/uautomizer/data/ba68b4a58/63b2b4b198994c2f987fcf10ae964d3d/FLAGf150706cc [2019-12-07 14:40:55,425 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 14:40:55,426 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_201c5eed-2431-4dfd-80e8-ca982abcadc4/sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2019-12-07 14:40:55,429 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_201c5eed-2431-4dfd-80e8-ca982abcadc4/bin/uautomizer/data/ba68b4a58/63b2b4b198994c2f987fcf10ae964d3d/FLAGf150706cc [2019-12-07 14:40:55,924 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_201c5eed-2431-4dfd-80e8-ca982abcadc4/bin/uautomizer/data/ba68b4a58/63b2b4b198994c2f987fcf10ae964d3d [2019-12-07 14:40:55,926 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 14:40:55,927 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 14:40:55,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 14:40:55,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 14:40:55,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 14:40:55,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:40:55" (1/1) ... [2019-12-07 14:40:55,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5668f315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:55, skipping insertion in model container [2019-12-07 14:40:55,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:40:55" (1/1) ... [2019-12-07 14:40:55,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 14:40:55,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 14:40:56,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:40:56,047 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 14:40:56,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:40:56,066 INFO L208 MainTranslator]: Completed translation [2019-12-07 14:40:56,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:56 WrapperNode [2019-12-07 14:40:56,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 14:40:56,066 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 14:40:56,067 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 14:40:56,067 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 14:40:56,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:56" (1/1) ... [2019-12-07 14:40:56,076 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:56" (1/1) ... [2019-12-07 14:40:56,114 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 14:40:56,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 14:40:56,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 14:40:56,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 14:40:56,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:56" (1/1) ... [2019-12-07 14:40:56,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:56" (1/1) ... [2019-12-07 14:40:56,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:56" (1/1) ... [2019-12-07 14:40:56,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:56" (1/1) ... [2019-12-07 14:40:56,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:56" (1/1) ... [2019-12-07 14:40:56,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:56" (1/1) ... [2019-12-07 14:40:56,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:56" (1/1) ... [2019-12-07 14:40:56,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 14:40:56,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 14:40:56,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 14:40:56,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 14:40:56,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_201c5eed-2431-4dfd-80e8-ca982abcadc4/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 14:40:56,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 14:40:56,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 14:40:56,514 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 14:40:56,514 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-12-07 14:40:56,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:40:56 BoogieIcfgContainer [2019-12-07 14:40:56,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 14:40:56,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 14:40:56,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 14:40:56,518 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 14:40:56,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 02:40:55" (1/3) ... [2019-12-07 14:40:56,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@132f5128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:40:56, skipping insertion in model container [2019-12-07 14:40:56,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:56" (2/3) ... [2019-12-07 14:40:56,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@132f5128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:40:56, skipping insertion in model container [2019-12-07 14:40:56,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:40:56" (3/3) ... [2019-12-07 14:40:56,520 INFO L109 eAbstractionObserver]: Analyzing ICFG Float_div.i [2019-12-07 14:40:56,529 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 14:40:56,533 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 14:40:56,540 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 14:40:56,554 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 14:40:56,554 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 14:40:56,555 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 14:40:56,555 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 14:40:56,555 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 14:40:56,555 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 14:40:56,555 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 14:40:56,555 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 14:40:56,563 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-12-07 14:40:56,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 14:40:56,567 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:40:56,567 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 14:40:56,568 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:40:56,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:40:56,571 INFO L82 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2019-12-07 14:40:56,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 14:40:56,579 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [964305023] [2019-12-07 14:40:56,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_201c5eed-2431-4dfd-80e8-ca982abcadc4/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-12-07 14:40:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:40:56,651 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 14:40:56,654 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:40:57,136 WARN L192 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2019-12-07 14:40:57,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:40:57,140 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:40:57,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:40:57,450 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [964305023] [2019-12-07 14:40:57,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:40:57,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-12-07 14:40:57,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286252309] [2019-12-07 14:40:57,455 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 14:40:57,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 14:40:57,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 14:40:57,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 14:40:57,465 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 5 states. [2019-12-07 14:40:57,818 WARN L192 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2019-12-07 14:40:58,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:40:58,379 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2019-12-07 14:40:58,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 14:40:58,380 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-12-07 14:40:58,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:40:58,388 INFO L225 Difference]: With dead ends: 21 [2019-12-07 14:40:58,388 INFO L226 Difference]: Without dead ends: 9 [2019-12-07 14:40:58,391 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-07 14:40:58,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-12-07 14:40:58,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-12-07 14:40:58,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-12-07 14:40:58,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-12-07 14:40:58,412 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2019-12-07 14:40:58,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:40:58,412 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-12-07 14:40:58,412 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 14:40:58,413 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-12-07 14:40:58,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 14:40:58,413 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:40:58,413 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-12-07 14:40:58,614 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 14:40:58,615 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:40:58,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:40:58,616 INFO L82 PathProgramCache]: Analyzing trace with hash 292915403, now seen corresponding path program 1 times [2019-12-07 14:40:58,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 14:40:58,617 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1637530634] [2019-12-07 14:40:58,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_201c5eed-2431-4dfd-80e8-ca982abcadc4/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-12-07 14:40:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:40:58,795 WARN L262 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 14:40:58,796 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:40:59,240 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2019-12-07 14:40:59,860 WARN L192 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2019-12-07 14:40:59,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:40:59,863 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:41:02,395 WARN L192 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2019-12-07 14:41:04,880 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2019-12-07 14:41:05,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2019-12-07 14:41:05,409 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1637530634] [2019-12-07 14:41:05,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 14:41:05,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2019-12-07 14:41:05,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648944633] [2019-12-07 14:41:05,411 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 14:41:05,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 14:41:05,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 14:41:05,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=38, Unknown=1, NotChecked=12, Total=72 [2019-12-07 14:41:05,411 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 9 states. [2019-12-07 14:41:07,445 WARN L192 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 14 [2019-12-07 14:41:07,934 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2019-12-07 14:41:09,106 WARN L192 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2019-12-07 14:41:14,874 WARN L192 SmtUtils]: Spent 2.23 s on a formula simplification that was a NOOP. DAG size: 13 [2019-12-07 14:41:19,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:41:19,460 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2019-12-07 14:41:19,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 14:41:19,486 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 8 [2019-12-07 14:41:19,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:41:19,486 INFO L225 Difference]: With dead ends: 16 [2019-12-07 14:41:19,486 INFO L226 Difference]: Without dead ends: 12 [2019-12-07 14:41:19,487 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=55, Invalid=104, Unknown=1, NotChecked=22, Total=182 [2019-12-07 14:41:19,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-12-07 14:41:19,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-12-07 14:41:19,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 14:41:19,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-12-07 14:41:19,490 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2019-12-07 14:41:19,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:41:19,490 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-12-07 14:41:19,490 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 14:41:19,490 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-12-07 14:41:19,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 14:41:19,491 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:41:19,491 INFO L410 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1] [2019-12-07 14:41:19,691 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 14:41:19,692 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:41:19,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:41:19,693 INFO L82 PathProgramCache]: Analyzing trace with hash 522938704, now seen corresponding path program 2 times [2019-12-07 14:41:19,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 14:41:19,694 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550857778] [2019-12-07 14:41:19,694 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_201c5eed-2431-4dfd-80e8-ca982abcadc4/bin/uautomizer/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 [2019-12-07 14:41:19,978 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 14:41:19,978 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 14:41:19,995 WARN L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 17 conjunts are in the unsatisfiable core [2019-12-07 14:41:19,996 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:41:20,511 WARN L192 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2019-12-07 14:41:23,364 WARN L192 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 13 [2019-12-07 14:41:33,197 WARN L192 SmtUtils]: Spent 2.60 s on a formula simplification that was a NOOP. DAG size: 14 [2019-12-07 14:41:35,309 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~x1~0 (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2019-12-07 14:42:00,237 WARN L192 SmtUtils]: Spent 6.95 s on a formula simplification that was a NOOP. DAG size: 18 [2019-12-07 14:42:00,336 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 4 times theorem prover too weak. 0 trivial. 5 not checked. [2019-12-07 14:42:00,336 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:42:11,449 WARN L192 SmtUtils]: Spent 4.38 s on a formula simplification that was a NOOP. DAG size: 11 [2019-12-07 14:42:14,146 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2019-12-07 14:42:16,228 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2019-12-07 14:42:19,305 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2019-12-07 14:42:21,418 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2019-12-07 14:42:23,557 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2019-12-07 14:42:25,696 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2019-12-07 14:42:27,808 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2019-12-07 14:42:29,922 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2019-12-07 14:42:29,923 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 14 not checked. [2019-12-07 14:42:29,924 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1550857778] [2019-12-07 14:42:29,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 14:42:29,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 17 [2019-12-07 14:42:29,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521710572] [2019-12-07 14:42:29,925 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-12-07 14:42:29,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 14:42:29,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-12-07 14:42:29,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=95, Unknown=16, NotChecked=150, Total=306 [2019-12-07 14:42:29,926 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 18 states. [2019-12-07 14:42:33,725 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2019-12-07 14:42:35,867 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2019-12-07 14:42:37,984 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) c_ULTIMATE.start_main_~x1~0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2019-12-07 14:42:41,873 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)) (let ((.cse1 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse0) .cse0))) (or (fp.eq .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1)))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2019-12-07 14:42:44,690 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0) c_ULTIMATE.start_main_~x1~0) (let ((.cse1 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse0))) (or (fp.eq .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1)))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2019-12-07 14:43:15,578 WARN L192 SmtUtils]: Spent 13.21 s on a formula simplification. DAG size of input: 22 DAG size of output: 15 [2019-12-07 14:43:26,933 WARN L192 SmtUtils]: Spent 3.89 s on a formula simplification that was a NOOP. DAG size: 16 [2019-12-07 14:43:35,091 WARN L192 SmtUtils]: Spent 4.12 s on a formula simplification that was a NOOP. DAG size: 19 [2019-12-07 14:43:37,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:43:37,455 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2019-12-07 14:43:37,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-12-07 14:43:37,456 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 11 [2019-12-07 14:43:37,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:43:37,456 INFO L225 Difference]: With dead ends: 20 [2019-12-07 14:43:37,456 INFO L226 Difference]: Without dead ends: 14 [2019-12-07 14:43:37,457 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 128.8s TimeCoverageRelationStatistics Valid=80, Invalid=176, Unknown=28, NotChecked=418, Total=702 [2019-12-07 14:43:37,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-12-07 14:43:37,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-12-07 14:43:37,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-12-07 14:43:37,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-12-07 14:43:37,460 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2019-12-07 14:43:37,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:43:37,461 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-12-07 14:43:37,461 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-12-07 14:43:37,461 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-12-07 14:43:37,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 14:43:37,461 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:43:37,461 INFO L410 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1] [2019-12-07 14:43:37,662 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 14:43:37,663 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:43:37,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:43:37,664 INFO L82 PathProgramCache]: Analyzing trace with hash 86212784, now seen corresponding path program 3 times [2019-12-07 14:43:37,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 14:43:37,665 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [254568606] [2019-12-07 14:43:37,666 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_201c5eed-2431-4dfd-80e8-ca982abcadc4/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-12-07 14:43:37,952 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-12-07 14:43:37,952 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 14:43:37,968 INFO L264 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 14:43:37,969 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:43:40,416 WARN L192 SmtUtils]: Spent 1.47 s on a formula simplification that was a NOOP. DAG size: 10 [2019-12-07 14:43:53,303 WARN L192 SmtUtils]: Spent 8.05 s on a formula simplification that was a NOOP. DAG size: 17 [2019-12-07 14:43:55,367 WARN L838 $PredicateComparison]: unable to prove that (and (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x~0) (= c_currentRoundingMode roundNearestTiesToEven) (exists ((v_ULTIMATE.start_main_~x~0_18 (_ FloatingPoint 8 24))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_18 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))))) (and (= c_ULTIMATE.start_main_~x~0 .cse0) (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_18)))))) is different from false [2019-12-07 14:43:55,734 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 14:44:16,194 WARN L192 SmtUtils]: Spent 11.02 s on a formula simplification that was a NOOP. DAG size: 22 [2019-12-07 14:44:22,384 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~x~0_18 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_18 .cse1))) (and (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_18)) (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))))))) is different from false [2019-12-07 14:44:24,431 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~x~0_18 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_18 .cse1))) (and (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_18)) (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))))))) is different from true [2019-12-07 14:44:24,432 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-12-07 14:44:24,433 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:44:47,953 WARN L192 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 13 [2019-12-07 14:44:50,002 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_20 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_20 .cse1))) (or (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_20) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))))) is different from false [2019-12-07 14:44:52,062 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_20 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_20 .cse1))) (or (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_20) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))))) is different from true [2019-12-07 14:44:52,071 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 12 not checked. [2019-12-07 14:44:52,071 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [254568606] [2019-12-07 14:44:52,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 14:44:52,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 12 [2019-12-07 14:44:52,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140696872] [2019-12-07 14:44:52,072 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 14:44:52,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 14:44:52,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 14:44:52,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=65, Unknown=10, NotChecked=54, Total=156 [2019-12-07 14:44:52,073 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 8 states. [2019-12-07 14:45:00,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:45:00,107 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2019-12-07 14:45:00,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 14:45:00,162 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2019-12-07 14:45:00,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:45:00,162 INFO L225 Difference]: With dead ends: 14 [2019-12-07 14:45:00,162 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 14:45:00,163 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 63.6s TimeCoverageRelationStatistics Valid=27, Invalid=65, Unknown=10, NotChecked=54, Total=156 [2019-12-07 14:45:00,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 14:45:00,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 14:45:00,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 14:45:00,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 14:45:00,164 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-12-07 14:45:00,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:45:00,164 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 14:45:00,164 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 14:45:00,164 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 14:45:00,164 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 14:45:00,365 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-12-07 14:45:00,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 14:45:07,493 WARN L192 SmtUtils]: Spent 7.05 s on a formula simplification that was a NOOP. DAG size: 17 [2019-12-07 14:45:07,499 INFO L246 CegarLoopResult]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-12-07 14:45:07,499 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 14:45:07,499 INFO L242 CegarLoopResult]: At program point L2-3(line 2) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2019-12-07 14:45:07,499 INFO L242 CegarLoopResult]: At program point L19(lines 7 20) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2019-12-07 14:45:07,499 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-12-07 14:45:07,499 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 14:45:07,499 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 14:45:07,500 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-12-07 14:45:07,500 INFO L242 CegarLoopResult]: At program point L12-2(lines 12 16) the Hoare annotation is: (and (= ULTIMATE.start_main_~x1~0 (fp.div currentRoundingMode ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) currentRoundingMode (/ 5.0 2.0)))) (= currentRoundingMode roundNearestTiesToEven) (exists ((v_ULTIMATE.start_main_~x~0_18 (_ FloatingPoint 8 24))) (let ((.cse0 (fp.div currentRoundingMode v_ULTIMATE.start_main_~x~0_18 ((_ to_fp 8 24) currentRoundingMode (/ 5.0 2.0))))) (and (= ULTIMATE.start_main_~x~0 .cse0) (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_18)))))) [2019-12-07 14:45:07,500 INFO L246 CegarLoopResult]: For program point L12-3(lines 12 16) no Hoare annotation was computed. [2019-12-07 14:45:07,500 INFO L246 CegarLoopResult]: For program point L2(line 2) no Hoare annotation was computed. [2019-12-07 14:45:07,507 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 14:45:07,508 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 14:45:07,510 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 14:45:07,510 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 14:45:07,511 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 14:45:07,512 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] [2019-12-07 14:45:07,512 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] [2019-12-07 14:45:07,512 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] [2019-12-07 14:45:07,512 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 14:45:07,513 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 14:45:07,513 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 14:45:07,513 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 14:45:07,513 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 14:45:07,513 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 14:45:07,513 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 14:45:07,515 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 14:45:07,515 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] [2019-12-07 14:45:07,515 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] [2019-12-07 14:45:07,515 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] [2019-12-07 14:45:07,515 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 14:45:07,516 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 14:45:07,516 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 14:45:07,516 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 14:45:07,516 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 14:45:07,516 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 14:45:07,516 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 14:45:07,517 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 14:45:07,517 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 14:45:07,517 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 14:45:07,517 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 14:45:07,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 02:45:07 BoogieIcfgContainer [2019-12-07 14:45:07,519 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 14:45:07,519 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 14:45:07,519 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 14:45:07,519 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 14:45:07,519 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:40:56" (3/4) ... [2019-12-07 14:45:07,522 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 14:45:07,528 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-12-07 14:45:07,528 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 14:45:07,528 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 14:45:07,546 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (x1 == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, x, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && (\exists v_ULTIMATE.start_main_~x~0_18 : C_FLOAT :: x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, v_ULTIMATE.start_main_~x~0_18, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) && !~fp.eq~FLOAT(~fp.div~FLOAT(unknown-currentRoundingMode-unknown, v_ULTIMATE.start_main_~x~0_18, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)), v_ULTIMATE.start_main_~x~0_18)) [2019-12-07 14:45:07,554 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_201c5eed-2431-4dfd-80e8-ca982abcadc4/bin/uautomizer/witness.graphml [2019-12-07 14:45:07,554 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 14:45:07,555 INFO L168 Benchmark]: Toolchain (without parser) took 251627.73 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.9 MB). Free memory was 952.4 MB in the beginning and 934.2 MB in the end (delta: 18.2 MB). Peak memory consumption was 135.1 MB. Max. memory is 11.5 GB. [2019-12-07 14:45:07,555 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:45:07,555 INFO L168 Benchmark]: CACSL2BoogieTranslator took 138.13 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 14:45:07,556 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.81 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.9 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -171.6 MB). Peak memory consumption was 10.0 MB. Max. memory is 11.5 GB. [2019-12-07 14:45:07,556 INFO L168 Benchmark]: Boogie Preprocessor took 15.01 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-12-07 14:45:07,557 INFO L168 Benchmark]: RCFGBuilder took 385.52 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: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. [2019-12-07 14:45:07,557 INFO L168 Benchmark]: TraceAbstraction took 251002.94 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 934.2 MB in the end (delta: 159.7 MB). Peak memory consumption was 159.7 MB. Max. memory is 11.5 GB. [2019-12-07 14:45:07,558 INFO L168 Benchmark]: Witness Printer took 35.02 ms. Allocated memory is still 1.1 GB. Free memory is still 934.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:45:07,560 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 138.13 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 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 47.81 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.9 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -171.6 MB). Peak memory consumption was 10.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.01 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 385.52 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: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 251002.94 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 934.2 MB in the end (delta: 159.7 MB). Peak memory consumption was 159.7 MB. Max. memory is 11.5 GB. * Witness Printer took 35.02 ms. Allocated memory is still 1.1 GB. Free memory is still 934.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: 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: 2]: Loop Invariant [2019-12-07 14:45:07,566 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 14:45:07,566 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 14:45:07,566 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 14:45:07,566 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 12]: Loop Invariant [2019-12-07 14:45:07,567 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 14:45:07,567 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] [2019-12-07 14:45:07,567 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] [2019-12-07 14:45:07,567 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] [2019-12-07 14:45:07,567 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 14:45:07,568 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 14:45:07,568 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 14:45:07,568 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 14:45:07,568 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 14:45:07,568 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 14:45:07,568 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 14:45:07,569 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 14:45:07,569 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] [2019-12-07 14:45:07,569 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] [2019-12-07 14:45:07,569 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] [2019-12-07 14:45:07,569 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 14:45:07,569 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 14:45:07,569 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 14:45:07,569 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 14:45:07,570 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 14:45:07,570 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 14:45:07,570 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: (x1 == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, x, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && (\exists v_ULTIMATE.start_main_~x~0_18 : C_FLOAT :: x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, v_ULTIMATE.start_main_~x~0_18, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) && !~fp.eq~FLOAT(~fp.div~FLOAT(unknown-currentRoundingMode-unknown, v_ULTIMATE.start_main_~x~0_18, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)), v_ULTIMATE.start_main_~x~0_18)) - InvariantResult [Line: 7]: Loop Invariant [2019-12-07 14:45:07,570 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 14:45:07,570 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 14:45:07,571 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 14:45:07,571 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: SAFE, OverallTime: 243.8s, OverallIterations: 4, TraceHistogramMax: 7, AutomataDifference: 90.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 7.1s, HoareTripleCheckerStatistics: 16 SDtfs, 26 SDslu, 38 SDs, 0 SdLazy, 80 SolverSat, 18 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 23.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 26 SyntacticMatches, 5 SemanticMatches, 53 ConstructedPredicates, 15 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 206.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=3, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 12 NumberOfFragments, 37 HoareAnnotationTreeSize, 3 FomulaSimplifications, 629 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 7.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 151.4s InterpolantComputationTime, 38 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 68 ConstructedInterpolants, 11 QuantifiedInterpolants, 11875 SizeOfPredicates, 19 NumberOfNonLiveVariables, 73 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 43/92 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...