./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1031.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_aa7abbee-9a61-4cc0-b68e-b377bb30163d/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_aa7abbee-9a61-4cc0-b68e-b377bb30163d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_aa7abbee-9a61-4cc0-b68e-b377bb30163d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_aa7abbee-9a61-4cc0-b68e-b377bb30163d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1031.c -s /tmp/vcloud-vcloud-master/worker/run_dir_aa7abbee-9a61-4cc0-b68e-b377bb30163d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_aa7abbee-9a61-4cc0-b68e-b377bb30163d/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 92378978a89ae01e3bc9e388811319081868cc5d ........................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_aa7abbee-9a61-4cc0-b68e-b377bb30163d/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_aa7abbee-9a61-4cc0-b68e-b377bb30163d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_aa7abbee-9a61-4cc0-b68e-b377bb30163d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_aa7abbee-9a61-4cc0-b68e-b377bb30163d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1031.c -s /tmp/vcloud-vcloud-master/worker/run_dir_aa7abbee-9a61-4cc0-b68e-b377bb30163d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_aa7abbee-9a61-4cc0-b68e-b377bb30163d/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 92378978a89ae01e3bc9e388811319081868cc5d .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:57:10,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:57:10,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:57:10,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:57:10,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:57:10,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:57:10,793 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:57:10,797 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:57:10,799 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:57:10,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:57:10,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:57:10,805 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:57:10,805 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:57:10,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:57:10,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:57:10,811 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:57:10,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:57:10,814 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:57:10,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:57:10,829 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:57:10,840 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:57:10,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:57:10,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:57:10,847 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:57:10,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:57:10,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:57:10,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:57:10,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:57:10,862 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:57:10,864 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:57:10,865 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:57:10,866 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:57:10,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:57:10,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:57:10,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:57:10,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:57:10,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:57:10,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:57:10,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:57:10,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:57:10,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:57:10,876 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_aa7abbee-9a61-4cc0-b68e-b377bb30163d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:57:10,914 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:57:10,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:57:10,916 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:57:10,916 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:57:10,917 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:57:10,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:57:10,917 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:57:10,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:57:10,918 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:57:10,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:57:10,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:57:10,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:57:10,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:57:10,919 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:57:10,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:57:10,919 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:57:10,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:57:10,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:57:10,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:57:10,920 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:57:10,921 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:57:10,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:57:10,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:57:10,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:57:10,922 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:57:10,922 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:57:10,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:57:10,922 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:57:10,923 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:57:10,923 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_aa7abbee-9a61-4cc0-b68e-b377bb30163d/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_aa7abbee-9a61-4cc0-b68e-b377bb30163d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92378978a89ae01e3bc9e388811319081868cc5d [2020-12-01 15:57:11,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:57:11,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:57:11,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:57:11,303 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:57:11,309 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:57:11,310 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_aa7abbee-9a61-4cc0-b68e-b377bb30163d/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1031.c [2020-12-01 15:57:11,384 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_aa7abbee-9a61-4cc0-b68e-b377bb30163d/bin/uautomizer/data/a8c428cb5/a0e9bfdf38824a1fa5b3ea6b981d4f87/FLAG3d19244f4 [2020-12-01 15:57:11,791 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:57:11,792 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_aa7abbee-9a61-4cc0-b68e-b377bb30163d/sv-benchmarks/c/float-newlib/float_req_bl_1031.c [2020-12-01 15:57:11,799 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_aa7abbee-9a61-4cc0-b68e-b377bb30163d/bin/uautomizer/data/a8c428cb5/a0e9bfdf38824a1fa5b3ea6b981d4f87/FLAG3d19244f4 [2020-12-01 15:57:12,190 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_aa7abbee-9a61-4cc0-b68e-b377bb30163d/bin/uautomizer/data/a8c428cb5/a0e9bfdf38824a1fa5b3ea6b981d4f87 [2020-12-01 15:57:12,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:57:12,193 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:57:12,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:57:12,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:57:12,198 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:57:12,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:57:12" (1/1) ... [2020-12-01 15:57:12,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@356cd52d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:12, skipping insertion in model container [2020-12-01 15:57:12,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:57:12" (1/1) ... [2020-12-01 15:57:12,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:57:12,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:57:12,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:57:12,448 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:57:12,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:57:12,511 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:57:12,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:12 WrapperNode [2020-12-01 15:57:12,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:57:12,513 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:57:12,513 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:57:12,514 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:57:12,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:12" (1/1) ... [2020-12-01 15:57:12,531 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:12" (1/1) ... [2020-12-01 15:57:12,551 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:57:12,552 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:57:12,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:57:12,553 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:57:12,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:12" (1/1) ... [2020-12-01 15:57:12,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:12" (1/1) ... [2020-12-01 15:57:12,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:12" (1/1) ... [2020-12-01 15:57:12,566 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:12" (1/1) ... [2020-12-01 15:57:12,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:12" (1/1) ... [2020-12-01 15:57:12,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:12" (1/1) ... [2020-12-01 15:57:12,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:12" (1/1) ... [2020-12-01 15:57:12,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:57:12,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:57:12,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:57:12,599 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:57:12,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aa7abbee-9a61-4cc0-b68e-b377bb30163d/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 [2020-12-01 15:57:12,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:57:12,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:57:12,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-01 15:57:12,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 15:57:12,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-01 15:57:12,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:57:12,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:57:12,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 15:57:12,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 15:57:13,066 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:57:13,067 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-01 15:57:13,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:57:13 BoogieIcfgContainer [2020-12-01 15:57:13,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:57:13,071 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:57:13,071 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:57:13,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:57:13,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:57:12" (1/3) ... [2020-12-01 15:57:13,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4688130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:57:13, skipping insertion in model container [2020-12-01 15:57:13,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:12" (2/3) ... [2020-12-01 15:57:13,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4688130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:57:13, skipping insertion in model container [2020-12-01 15:57:13,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:57:13" (3/3) ... [2020-12-01 15:57:13,080 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1031.c [2020-12-01 15:57:13,097 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:57:13,101 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 15:57:13,116 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 15:57:13,146 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:57:13,146 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:57:13,147 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:57:13,147 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:57:13,147 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:57:13,147 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:57:13,148 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:57:13,148 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:57:13,177 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-12-01 15:57:13,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 15:57:13,198 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:57:13,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:57:13,199 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:57:13,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:57:13,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1590434411, now seen corresponding path program 1 times [2020-12-01 15:57:13,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:57:13,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882564111] [2020-12-01 15:57:13,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:57:13,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:57:13,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:57:13,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882564111] [2020-12-01 15:57:13,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:57:13,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:57:13,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705291412] [2020-12-01 15:57:13,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 15:57:13,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:57:13,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 15:57:13,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:57:13,421 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-12-01 15:57:13,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:57:13,441 INFO L93 Difference]: Finished difference Result 41 states and 59 transitions. [2020-12-01 15:57:13,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:57:13,443 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-01 15:57:13,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:57:13,454 INFO L225 Difference]: With dead ends: 41 [2020-12-01 15:57:13,455 INFO L226 Difference]: Without dead ends: 18 [2020-12-01 15:57:13,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:57:13,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-01 15:57:13,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-01 15:57:13,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-01 15:57:13,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2020-12-01 15:57:13,498 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2020-12-01 15:57:13,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:57:13,499 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2020-12-01 15:57:13,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 15:57:13,499 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-12-01 15:57:13,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 15:57:13,500 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:57:13,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:57:13,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:57:13,501 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:57:13,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:57:13,503 INFO L82 PathProgramCache]: Analyzing trace with hash -744872786, now seen corresponding path program 1 times [2020-12-01 15:57:13,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:57:13,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345393966] [2020-12-01 15:57:13,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:57:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:57:13,585 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:57:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:57:13,637 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:57:13,665 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:57:13,665 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 15:57:13,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 15:57:13,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:57:13 BoogieIcfgContainer [2020-12-01 15:57:13,714 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:57:13,715 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:57:13,716 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:57:13,716 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:57:13,717 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:57:13" (3/4) ... [2020-12-01 15:57:13,721 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-01 15:57:13,721 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:57:13,727 INFO L168 Benchmark]: Toolchain (without parser) took 1529.24 ms. Allocated memory was 77.6 MB in the beginning and 98.6 MB in the end (delta: 21.0 MB). Free memory was 41.1 MB in the beginning and 32.8 MB in the end (delta: 8.4 MB). Peak memory consumption was 29.2 MB. Max. memory is 16.1 GB. [2020-12-01 15:57:13,729 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 77.6 MB. Free memory was 57.3 MB in the beginning and 57.3 MB in the end (delta: 33.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:57:13,731 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.88 ms. Allocated memory was 77.6 MB in the beginning and 98.6 MB in the end (delta: 21.0 MB). Free memory was 41.0 MB in the beginning and 74.3 MB in the end (delta: -33.4 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2020-12-01 15:57:13,732 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.50 ms. Allocated memory is still 98.6 MB. Free memory was 74.3 MB in the beginning and 73.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:57:13,733 INFO L168 Benchmark]: Boogie Preprocessor took 45.47 ms. Allocated memory is still 98.6 MB. Free memory was 73.0 MB in the beginning and 71.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:57:13,735 INFO L168 Benchmark]: RCFGBuilder took 470.48 ms. Allocated memory is still 98.6 MB. Free memory was 71.4 MB in the beginning and 55.8 MB in the end (delta: 15.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-01 15:57:13,735 INFO L168 Benchmark]: TraceAbstraction took 642.91 ms. Allocated memory is still 98.6 MB. Free memory was 55.5 MB in the beginning and 33.1 MB in the end (delta: 22.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-12-01 15:57:13,740 INFO L168 Benchmark]: Witness Printer took 6.45 ms. Allocated memory is still 98.6 MB. Free memory was 33.1 MB in the beginning and 32.8 MB in the end (delta: 364.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:57:13,753 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 77.6 MB. Free memory was 57.3 MB in the beginning and 57.3 MB in the end (delta: 33.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 317.88 ms. Allocated memory was 77.6 MB in the beginning and 98.6 MB in the end (delta: 21.0 MB). Free memory was 41.0 MB in the beginning and 74.3 MB in the end (delta: -33.4 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.50 ms. Allocated memory is still 98.6 MB. Free memory was 74.3 MB in the beginning and 73.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.47 ms. Allocated memory is still 98.6 MB. Free memory was 73.0 MB in the beginning and 71.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 470.48 ms. Allocated memory is still 98.6 MB. Free memory was 71.4 MB in the beginning and 55.8 MB in the end (delta: 15.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 642.91 ms. Allocated memory is still 98.6 MB. Free memory was 55.5 MB in the beginning and 33.1 MB in the end (delta: 22.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 6.45 ms. Allocated memory is still 98.6 MB. Free memory was 33.1 MB in the beginning and 32.8 MB in the end (delta: 364.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 57, overapproximation of someBinaryArithmeticFLOAToperation at line 44, overapproximation of bitwiseAnd at line 24. Possible FailurePath: [L67] float x = 0.0f / 0.0f; [L14] __uint32_t w; [L16] int exponent_less_127; [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (w) = gf_u.word [L24] exponent_less_127 = (int)((w & 0x7f800000) >> 23) - 127 [L26] COND FALSE !(exponent_less_127 < 23) [L42] COND TRUE exponent_less_127 == 128 [L44] return x + x; [L68] float res = round_float(x); [L57] return x != x; [L71] COND TRUE !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_1031.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 25 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-69874e2 [2020-12-01 15:57:16,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:57:16,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:57:16,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:57:16,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:57:16,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:57:16,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:57:16,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:57:16,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:57:16,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:57:16,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:57:16,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:57:16,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:57:16,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:57:16,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:57:16,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:57:16,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:57:16,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:57:16,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:57:16,610 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:57:16,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:57:16,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:57:16,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:57:16,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:57:16,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:57:16,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:57:16,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:57:16,633 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:57:16,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:57:16,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:57:16,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:57:16,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:57:16,640 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:57:16,641 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:57:16,643 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:57:16,644 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:57:16,645 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:57:16,645 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:57:16,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:57:16,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:57:16,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:57:16,649 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_aa7abbee-9a61-4cc0-b68e-b377bb30163d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-01 15:57:16,680 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:57:16,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:57:16,682 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:57:16,682 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:57:16,682 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:57:16,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:57:16,682 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:57:16,683 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:57:16,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:57:16,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:57:16,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:57:16,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:57:16,684 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-01 15:57:16,684 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-01 15:57:16,684 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:57:16,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:57:16,684 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:57:16,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:57:16,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:57:16,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:57:16,685 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:57:16,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:57:16,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:57:16,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:57:16,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:57:16,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:57:16,686 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-01 15:57:16,686 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-01 15:57:16,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:57:16,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:57:16,687 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-01 15:57:16,687 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_aa7abbee-9a61-4cc0-b68e-b377bb30163d/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_aa7abbee-9a61-4cc0-b68e-b377bb30163d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92378978a89ae01e3bc9e388811319081868cc5d [2020-12-01 15:57:17,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:57:17,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:57:17,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:57:17,165 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:57:17,170 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:57:17,171 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_aa7abbee-9a61-4cc0-b68e-b377bb30163d/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1031.c [2020-12-01 15:57:17,266 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_aa7abbee-9a61-4cc0-b68e-b377bb30163d/bin/uautomizer/data/20111ab6c/0391b8f1ec5e4a9cb5c60355f925a6ef/FLAG4d39b21c9 [2020-12-01 15:57:18,038 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:57:18,041 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_aa7abbee-9a61-4cc0-b68e-b377bb30163d/sv-benchmarks/c/float-newlib/float_req_bl_1031.c [2020-12-01 15:57:18,049 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_aa7abbee-9a61-4cc0-b68e-b377bb30163d/bin/uautomizer/data/20111ab6c/0391b8f1ec5e4a9cb5c60355f925a6ef/FLAG4d39b21c9 [2020-12-01 15:57:18,344 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_aa7abbee-9a61-4cc0-b68e-b377bb30163d/bin/uautomizer/data/20111ab6c/0391b8f1ec5e4a9cb5c60355f925a6ef [2020-12-01 15:57:18,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:57:18,349 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:57:18,352 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:57:18,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:57:18,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:57:18,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:57:18" (1/1) ... [2020-12-01 15:57:18,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3608fc27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:18, skipping insertion in model container [2020-12-01 15:57:18,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:57:18" (1/1) ... [2020-12-01 15:57:18,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:57:18,398 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:57:18,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:57:18,628 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:57:18,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:57:18,679 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:57:18,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:18 WrapperNode [2020-12-01 15:57:18,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:57:18,681 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:57:18,682 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:57:18,682 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:57:18,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:18" (1/1) ... [2020-12-01 15:57:18,703 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:18" (1/1) ... [2020-12-01 15:57:18,792 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:57:18,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:57:18,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:57:18,794 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:57:18,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:18" (1/1) ... [2020-12-01 15:57:18,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:18" (1/1) ... [2020-12-01 15:57:18,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:18" (1/1) ... [2020-12-01 15:57:18,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:18" (1/1) ... [2020-12-01 15:57:18,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:18" (1/1) ... [2020-12-01 15:57:18,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:18" (1/1) ... [2020-12-01 15:57:18,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:18" (1/1) ... [2020-12-01 15:57:18,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:57:18,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:57:18,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:57:18,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:57:18,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aa7abbee-9a61-4cc0-b68e-b377bb30163d/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 [2020-12-01 15:57:18,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-01 15:57:18,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:57:18,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-12-01 15:57:18,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-01 15:57:18,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:57:18,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:57:18,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-12-01 15:57:18,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-01 15:57:18,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 15:57:19,513 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:57:19,513 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-01 15:57:19,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:57:19 BoogieIcfgContainer [2020-12-01 15:57:19,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:57:19,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:57:19,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:57:19,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:57:19,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:57:18" (1/3) ... [2020-12-01 15:57:19,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138d2e59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:57:19, skipping insertion in model container [2020-12-01 15:57:19,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:18" (2/3) ... [2020-12-01 15:57:19,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138d2e59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:57:19, skipping insertion in model container [2020-12-01 15:57:19,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:57:19" (3/3) ... [2020-12-01 15:57:19,522 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1031.c [2020-12-01 15:57:19,536 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:57:19,541 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 15:57:19,560 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 15:57:19,581 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:57:19,581 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:57:19,582 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:57:19,582 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:57:19,582 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:57:19,582 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:57:19,582 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:57:19,582 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:57:19,593 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-12-01 15:57:19,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 15:57:19,608 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:57:19,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:57:19,609 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:57:19,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:57:19,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1590434411, now seen corresponding path program 1 times [2020-12-01 15:57:19,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:57:19,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1599334992] [2020-12-01 15:57:19,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aa7abbee-9a61-4cc0-b68e-b377bb30163d/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 [2020-12-01 15:57:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:57:19,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-01 15:57:19,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:57:19,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:57:19,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:57:19,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:57:19,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1599334992] [2020-12-01 15:57:19,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:57:19,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-01 15:57:19,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210241855] [2020-12-01 15:57:19,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 15:57:19,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:57:19,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 15:57:19,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:57:19,854 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-12-01 15:57:19,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:57:19,884 INFO L93 Difference]: Finished difference Result 41 states and 59 transitions. [2020-12-01 15:57:19,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:57:19,886 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-01 15:57:19,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:57:19,896 INFO L225 Difference]: With dead ends: 41 [2020-12-01 15:57:19,896 INFO L226 Difference]: Without dead ends: 18 [2020-12-01 15:57:19,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:57:19,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-01 15:57:19,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-01 15:57:19,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-01 15:57:19,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2020-12-01 15:57:19,934 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2020-12-01 15:57:19,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:57:19,935 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2020-12-01 15:57:19,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 15:57:19,935 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-12-01 15:57:19,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 15:57:19,936 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:57:19,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:57:20,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-01 15:57:20,162 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:57:20,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:57:20,163 INFO L82 PathProgramCache]: Analyzing trace with hash -744872786, now seen corresponding path program 1 times [2020-12-01 15:57:20,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:57:20,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1870359891] [2020-12-01 15:57:20,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aa7abbee-9a61-4cc0-b68e-b377bb30163d/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 [2020-12-01 15:57:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:57:20,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-01 15:57:20,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:57:20,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:57:20,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:57:21,360 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-12-01 15:57:21,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:57:21,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1870359891] [2020-12-01 15:57:21,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:57:21,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-12-01 15:57:21,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852343690] [2020-12-01 15:57:21,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 15:57:21,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:57:21,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 15:57:21,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-12-01 15:57:21,398 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 10 states. [2020-12-01 15:57:21,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:57:21,882 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2020-12-01 15:57:21,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 15:57:21,884 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2020-12-01 15:57:21,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:57:21,885 INFO L225 Difference]: With dead ends: 23 [2020-12-01 15:57:21,885 INFO L226 Difference]: Without dead ends: 17 [2020-12-01 15:57:21,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-12-01 15:57:21,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-01 15:57:21,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-01 15:57:21,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-01 15:57:21,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-12-01 15:57:21,891 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 11 [2020-12-01 15:57:21,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:57:21,892 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-12-01 15:57:21,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 15:57:21,892 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-12-01 15:57:21,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 15:57:21,893 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:57:21,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:57:22,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-01 15:57:22,109 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:57:22,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:57:22,111 INFO L82 PathProgramCache]: Analyzing trace with hash 812423977, now seen corresponding path program 1 times [2020-12-01 15:57:22,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:57:22,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1188190642] [2020-12-01 15:57:22,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aa7abbee-9a61-4cc0-b68e-b377bb30163d/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 [2020-12-01 15:57:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:57:22,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-01 15:57:22,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:57:22,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:57:22,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:57:22,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:57:22,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1188190642] [2020-12-01 15:57:22,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:57:22,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-12-01 15:57:22,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861561710] [2020-12-01 15:57:22,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 15:57:22,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:57:22,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 15:57:22,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:57:22,630 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 8 states. [2020-12-01 15:57:22,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:57:22,815 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2020-12-01 15:57:22,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:57:22,816 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-12-01 15:57:22,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:57:22,816 INFO L225 Difference]: With dead ends: 17 [2020-12-01 15:57:22,816 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 15:57:22,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-12-01 15:57:22,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 15:57:22,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 15:57:22,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 15:57:22,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 15:57:22,818 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-01 15:57:22,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:57:22,818 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:57:22,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 15:57:22,818 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:57:22,819 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 15:57:23,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-01 15:57:23,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-01 15:57:23,171 INFO L262 CegarLoopResult]: For program point L27(lines 27 40) no Hoare annotation was computed. [2020-12-01 15:57:23,171 INFO L262 CegarLoopResult]: For program point L48(lines 48 52) no Hoare annotation was computed. [2020-12-01 15:57:23,171 INFO L262 CegarLoopResult]: For program point L48-1(lines 13 54) no Hoare annotation was computed. [2020-12-01 15:57:23,171 INFO L262 CegarLoopResult]: For program point L48-2(lines 48 52) no Hoare annotation was computed. [2020-12-01 15:57:23,171 INFO L262 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-12-01 15:57:23,171 INFO L262 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-12-01 15:57:23,172 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-01 15:57:23,172 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-01 15:57:23,172 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-01 15:57:23,172 INFO L258 CegarLoopResult]: At program point L57(line 57) the Hoare annotation is: (and (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_round_float_~x) (= currentRoundingMode roundNearestTiesToEven) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (= (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (fp.add roundNearestTiesToEven .cse0 .cse0)) |ULTIMATE.start_round_float_#res|)) [2020-12-01 15:57:23,173 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-12-01 15:57:23,173 INFO L258 CegarLoopResult]: At program point L53(lines 13 54) the Hoare annotation is: (and (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_round_float_~x) (= currentRoundingMode roundNearestTiesToEven) (= (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (fp.add roundNearestTiesToEven .cse0 .cse0)) |ULTIMATE.start_round_float_#res|)) [2020-12-01 15:57:23,173 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-01 15:57:23,173 INFO L262 CegarLoopResult]: For program point L29(lines 29 31) no Hoare annotation was computed. [2020-12-01 15:57:23,173 INFO L262 CegarLoopResult]: For program point L42(lines 42 46) no Hoare annotation was computed. [2020-12-01 15:57:23,174 INFO L262 CegarLoopResult]: For program point L71(lines 71 74) no Hoare annotation was computed. [2020-12-01 15:57:23,174 INFO L262 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2020-12-01 15:57:23,174 INFO L262 CegarLoopResult]: For program point L26(lines 26 47) no Hoare annotation was computed. [2020-12-01 15:57:23,174 INFO L262 CegarLoopResult]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2020-12-01 15:57:23,174 INFO L258 CegarLoopResult]: At program point L18-2(lines 18 22) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_round_float_~x))) [2020-12-01 15:57:23,174 INFO L262 CegarLoopResult]: For program point L18-3(lines 18 22) no Hoare annotation was computed. [2020-12-01 15:57:23,175 INFO L265 CegarLoopResult]: At program point L76(lines 59 77) the Hoare annotation is: true [2020-12-01 15:57:23,186 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:57:23,187 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:57:23,187 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:57:23,188 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:57:23,190 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-12-01 15:57:23,190 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-12-01 15:57:23,194 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:57:23,194 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:57:23,194 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:57:23,195 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:57:23,195 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-12-01 15:57:23,195 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-12-01 15:57:23,197 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:57:23,198 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-01 15:57:23,198 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-12-01 15:57:23,199 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:57:23,199 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-01 15:57:23,199 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-12-01 15:57:23,200 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:57:23,200 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:57:23,201 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:57:23,201 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:57:23,202 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-12-01 15:57:23,202 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-12-01 15:57:23,203 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:57:23,203 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:57:23,203 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:57:23,203 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:57:23,204 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-12-01 15:57:23,204 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-12-01 15:57:23,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:57:23 BoogieIcfgContainer [2020-12-01 15:57:23,207 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:57:23,208 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:57:23,208 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:57:23,208 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:57:23,209 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:57:19" (3/4) ... [2020-12-01 15:57:23,213 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 15:57:23,225 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-12-01 15:57:23,226 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-12-01 15:57:23,226 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-01 15:57:23,227 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:57:23,257 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-12-01 15:57:23,257 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result [2020-12-01 15:57:23,258 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && 1bv32 == \result) && ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result [2020-12-01 15:57:23,281 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_aa7abbee-9a61-4cc0-b68e-b377bb30163d/bin/uautomizer/witness.graphml [2020-12-01 15:57:23,282 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:57:23,283 INFO L168 Benchmark]: Toolchain (without parser) took 4933.55 ms. Allocated memory was 69.2 MB in the beginning and 92.3 MB in the end (delta: 23.1 MB). Free memory was 51.7 MB in the beginning and 36.7 MB in the end (delta: 15.0 MB). Peak memory consumption was 36.9 MB. Max. memory is 16.1 GB. [2020-12-01 15:57:23,284 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 69.2 MB. Free memory is still 51.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:57:23,285 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.41 ms. Allocated memory is still 69.2 MB. Free memory was 51.6 MB in the beginning and 40.8 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 15:57:23,285 INFO L168 Benchmark]: Boogie Procedure Inliner took 110.98 ms. Allocated memory is still 69.2 MB. Free memory was 40.8 MB in the beginning and 52.4 MB in the end (delta: -11.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:57:23,286 INFO L168 Benchmark]: Boogie Preprocessor took 77.18 ms. Allocated memory is still 69.2 MB. Free memory was 52.4 MB in the beginning and 50.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:57:23,287 INFO L168 Benchmark]: RCFGBuilder took 642.84 ms. Allocated memory is still 69.2 MB. Free memory was 50.7 MB in the beginning and 35.0 MB in the end (delta: 15.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-01 15:57:23,288 INFO L168 Benchmark]: TraceAbstraction took 3690.94 ms. Allocated memory was 69.2 MB in the beginning and 92.3 MB in the end (delta: 23.1 MB). Free memory was 34.5 MB in the beginning and 39.6 MB in the end (delta: -5.1 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.1 GB. [2020-12-01 15:57:23,289 INFO L168 Benchmark]: Witness Printer took 74.23 ms. Allocated memory is still 92.3 MB. Free memory was 39.6 MB in the beginning and 36.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:57:23,293 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 69.2 MB. Free memory is still 51.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 328.41 ms. Allocated memory is still 69.2 MB. Free memory was 51.6 MB in the beginning and 40.8 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 110.98 ms. Allocated memory is still 69.2 MB. Free memory was 40.8 MB in the beginning and 52.4 MB in the end (delta: -11.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 77.18 ms. Allocated memory is still 69.2 MB. Free memory was 52.4 MB in the beginning and 50.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 642.84 ms. Allocated memory is still 69.2 MB. Free memory was 50.7 MB in the beginning and 35.0 MB in the end (delta: 15.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3690.94 ms. Allocated memory was 69.2 MB in the beginning and 92.3 MB in the end (delta: 23.1 MB). Free memory was 34.5 MB in the beginning and 39.6 MB in the end (delta: -5.1 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.1 GB. * Witness Printer took 74.23 ms. Allocated memory is still 92.3 MB. Free memory was 39.6 MB in the beginning and 36.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 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 Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - 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[currentRoundingMode,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[currentRoundingMode,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 - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - 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 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 13]: Loop Invariant [2020-12-01 15:57:23,307 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:57:23,307 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:57:23,308 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:57:23,308 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:57:23,308 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-12-01 15:57:23,309 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-12-01 15:57:23,309 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:57:23,309 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:57:23,310 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:57:23,310 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:57:23,310 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-12-01 15:57:23,311 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: (~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result - InvariantResult [Line: 18]: Loop Invariant [2020-12-01 15:57:23,316 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:57:23,316 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-01 15:57:23,317 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-12-01 15:57:23,317 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:57:23,318 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-01 15:57:23,319 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 57]: Loop Invariant [2020-12-01 15:57:23,320 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:57:23,322 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:57:23,323 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:57:23,323 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:57:23,323 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-12-01 15:57:23,329 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-12-01 15:57:23,330 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:57:23,330 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:57:23,331 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:57:23,331 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:57:23,331 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-12-01 15:57:23,332 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && 1bv32 == \result) && ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 31 SDslu, 74 SDs, 0 SdLazy, 44 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 59 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 6 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 66 ConstructedInterpolants, 5 QuantifiedInterpolants, 3560 SizeOfPredicates, 17 NumberOfNonLiveVariables, 142 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...