./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ab43dd3b-f558-4c22-817b-2d8cc9b1bb21/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_ab43dd3b-f558-4c22-817b-2d8cc9b1bb21/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ab43dd3b-f558-4c22-817b-2d8cc9b1bb21/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ab43dd3b-f558-4c22-817b-2d8cc9b1bb21/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ab43dd3b-f558-4c22-817b-2d8cc9b1bb21/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ab43dd3b-f558-4c22-817b-2d8cc9b1bb21/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cbf38875841624eee0d839935b3b6d34a59b0b20 ............................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ab43dd3b-f558-4c22-817b-2d8cc9b1bb21/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_ab43dd3b-f558-4c22-817b-2d8cc9b1bb21/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ab43dd3b-f558-4c22-817b-2d8cc9b1bb21/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ab43dd3b-f558-4c22-817b-2d8cc9b1bb21/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ab43dd3b-f558-4c22-817b-2d8cc9b1bb21/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ab43dd3b-f558-4c22-817b-2d8cc9b1bb21/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cbf38875841624eee0d839935b3b6d34a59b0b20 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:48:42,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:48:42,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:48:42,652 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:48:42,653 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:48:42,654 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:48:42,655 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:48:42,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:48:42,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:48:42,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:48:42,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:48:42,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:48:42,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:48:42,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:48:42,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:48:42,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:48:42,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:48:42,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:48:42,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:48:42,674 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:48:42,676 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:48:42,677 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:48:42,679 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:48:42,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:48:42,682 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:48:42,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:48:42,683 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:48:42,684 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:48:42,685 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:48:42,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:48:42,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:48:42,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:48:42,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:48:42,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:48:42,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:48:42,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:48:42,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:48:42,690 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:48:42,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:48:42,692 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:48:42,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:48:42,693 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ab43dd3b-f558-4c22-817b-2d8cc9b1bb21/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:48:42,706 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:48:42,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:48:42,708 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:48:42,708 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:48:42,708 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:48:42,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:48:42,708 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:48:42,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:48:42,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:48:42,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:48:42,709 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:48:42,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:48:42,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:48:42,710 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:48:42,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:48:42,710 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:48:42,710 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:48:42,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:48:42,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:48:42,711 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:48:42,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:48:42,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:48:42,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:48:42,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:48:42,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:48:42,712 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:48:42,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:48:42,712 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:48:42,713 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ab43dd3b-f558-4c22-817b-2d8cc9b1bb21/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cbf38875841624eee0d839935b3b6d34a59b0b20 [2019-11-25 08:48:42,854 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:48:42,865 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:48:42,868 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:48:42,869 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:48:42,870 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:48:42,870 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ab43dd3b-f558-4c22-817b-2d8cc9b1bb21/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2019-11-25 08:48:42,919 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ab43dd3b-f558-4c22-817b-2d8cc9b1bb21/bin/uautomizer/data/78fcbebd1/6c56175b8a33453cb27914d425ae7401/FLAGce710690b [2019-11-25 08:48:43,319 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:48:43,320 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ab43dd3b-f558-4c22-817b-2d8cc9b1bb21/sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2019-11-25 08:48:43,326 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ab43dd3b-f558-4c22-817b-2d8cc9b1bb21/bin/uautomizer/data/78fcbebd1/6c56175b8a33453cb27914d425ae7401/FLAGce710690b [2019-11-25 08:48:43,697 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ab43dd3b-f558-4c22-817b-2d8cc9b1bb21/bin/uautomizer/data/78fcbebd1/6c56175b8a33453cb27914d425ae7401 [2019-11-25 08:48:43,700 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:48:43,701 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:48:43,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:48:43,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:48:43,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:48:43,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:48:43" (1/1) ... [2019-11-25 08:48:43,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d2b1b34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:43, skipping insertion in model container [2019-11-25 08:48:43,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:48:43" (1/1) ... [2019-11-25 08:48:43,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:48:43,731 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:48:43,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:48:43,874 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:48:43,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:48:43,988 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:48:43,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:43 WrapperNode [2019-11-25 08:48:43,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:48:43,989 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:48:43,990 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:48:43,990 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:48:43,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:43" (1/1) ... [2019-11-25 08:48:44,006 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:43" (1/1) ... [2019-11-25 08:48:44,024 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:48:44,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:48:44,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:48:44,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:48:44,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:43" (1/1) ... [2019-11-25 08:48:44,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:43" (1/1) ... [2019-11-25 08:48:44,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:43" (1/1) ... [2019-11-25 08:48:44,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:43" (1/1) ... [2019-11-25 08:48:44,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:43" (1/1) ... [2019-11-25 08:48:44,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:43" (1/1) ... [2019-11-25 08:48:44,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:43" (1/1) ... [2019-11-25 08:48:44,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:48:44,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:48:44,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:48:44,051 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:48:44,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab43dd3b-f558-4c22-817b-2d8cc9b1bb21/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:48:44,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-25 08:48:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-25 08:48:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-25 08:48:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:48:44,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:48:44,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-25 08:48:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:48:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:48:44,432 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:48:44,432 INFO L284 CfgBuilder]: Removed 14 assume(true) statements. [2019-11-25 08:48:44,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:48:44 BoogieIcfgContainer [2019-11-25 08:48:44,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:48:44,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:48:44,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:48:44,438 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:48:44,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:48:43" (1/3) ... [2019-11-25 08:48:44,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec288dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:48:44, skipping insertion in model container [2019-11-25 08:48:44,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:43" (2/3) ... [2019-11-25 08:48:44,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec288dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:48:44, skipping insertion in model container [2019-11-25 08:48:44,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:48:44" (3/3) ... [2019-11-25 08:48:44,441 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1071.c [2019-11-25 08:48:44,450 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:48:44,456 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:48:44,466 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:48:44,506 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:48:44,507 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:48:44,507 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:48:44,507 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:48:44,508 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:48:44,508 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:48:44,508 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:48:44,508 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:48:44,527 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-11-25 08:48:44,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-25 08:48:44,535 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:44,535 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:44,536 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:48:44,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:44,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1945097259, now seen corresponding path program 1 times [2019-11-25 08:48:44,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:44,548 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939924103] [2019-11-25 08:48:44,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:44,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:44,645 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939924103] [2019-11-25 08:48:44,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:48:44,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:48:44,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909727873] [2019-11-25 08:48:44,650 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:48:44,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:44,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:48:44,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:48:44,661 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-11-25 08:48:44,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:44,677 INFO L93 Difference]: Finished difference Result 40 states and 58 transitions. [2019-11-25 08:48:44,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:48:44,679 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-25 08:48:44,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:44,687 INFO L225 Difference]: With dead ends: 40 [2019-11-25 08:48:44,687 INFO L226 Difference]: Without dead ends: 18 [2019-11-25 08:48:44,690 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:48:44,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-25 08:48:44,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-25 08:48:44,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-25 08:48:44,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-11-25 08:48:44,720 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2019-11-25 08:48:44,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:44,720 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-11-25 08:48:44,721 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:48:44,721 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-11-25 08:48:44,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:48:44,721 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:44,721 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:44,722 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:48:44,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:44,722 INFO L82 PathProgramCache]: Analyzing trace with hash -390209938, now seen corresponding path program 1 times [2019-11-25 08:48:44,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:44,723 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272522069] [2019-11-25 08:48:44,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:44,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:44,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:44,829 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:48:44,829 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:48:44,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:48:44 BoogieIcfgContainer [2019-11-25 08:48:44,860 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:48:44,863 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:48:44,863 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:48:44,864 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:48:44,864 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:48:44" (3/4) ... [2019-11-25 08:48:44,867 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:48:44,867 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:48:44,868 INFO L168 Benchmark]: Toolchain (without parser) took 1166.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -135.3 MB). Peak memory consumption was 7.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:44,869 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:48:44,870 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -185.9 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:44,870 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.74 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:48:44,871 INFO L168 Benchmark]: Boogie Preprocessor took 26.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:44,871 INFO L168 Benchmark]: RCFGBuilder took 383.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:44,872 INFO L168 Benchmark]: TraceAbstraction took 426.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:44,872 INFO L168 Benchmark]: Witness Printer took 3.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:48:44,875 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 286.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -185.9 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.74 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 383.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 426.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Witness Printer took 3.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 57]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 44, overapproximation of someBinaryArithmeticFLOAToperation at line 38, overapproximation of bitwiseAnd at line 19. Possible FailurePath: [L52] float x = 0.0f / 0.0f; [L13] __int32_t signbit, w, exponent_less_127; [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (w) = gf_u.word [L19] signbit = w & 0x80000000 [L20] exponent_less_127 = ((w & 0x7f800000) >> 23) - 127 [L21] COND FALSE !(exponent_less_127 < 23) [L37] COND TRUE exponent_less_127 == 255 [L38] return x + x; [L53] float res = trunc_float(x); [L44] return x != x; [L56] COND TRUE !isnan_float(res) [L57] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 23 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=21occurred 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-25 08:48:46,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:48:46,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:48:46,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:48:46,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:48:46,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:48:46,847 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:48:46,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:48:46,851 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:48:46,852 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:48:46,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:48:46,854 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:48:46,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:48:46,855 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:48:46,856 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:48:46,857 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:48:46,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:48:46,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:48:46,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:48:46,863 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:48:46,865 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:48:46,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:48:46,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:48:46,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:48:46,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:48:46,871 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:48:46,871 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:48:46,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:48:46,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:48:46,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:48:46,874 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:48:46,875 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:48:46,875 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:48:46,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:48:46,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:48:46,878 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:48:46,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:48:46,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:48:46,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:48:46,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:48:46,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:48:46,881 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ab43dd3b-f558-4c22-817b-2d8cc9b1bb21/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-25 08:48:46,896 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:48:46,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:48:46,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:48:46,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:48:46,897 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:48:46,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:48:46,898 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:48:46,906 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:48:46,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:48:46,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:48:46,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:48:46,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:48:46,907 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-25 08:48:46,907 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-25 08:48:46,908 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-25 08:48:46,908 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:48:46,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:48:46,908 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:48:46,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:48:46,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:48:46,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:48:46,909 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:48:46,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:48:46,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:48:46,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:48:46,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:48:46,910 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:48:46,911 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-25 08:48:46,911 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-25 08:48:46,911 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:48:46,911 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-25 08:48:46,911 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ab43dd3b-f558-4c22-817b-2d8cc9b1bb21/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cbf38875841624eee0d839935b3b6d34a59b0b20 [2019-11-25 08:48:47,209 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:48:47,221 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:48:47,225 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:48:47,226 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:48:47,227 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:48:47,227 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ab43dd3b-f558-4c22-817b-2d8cc9b1bb21/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2019-11-25 08:48:47,288 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ab43dd3b-f558-4c22-817b-2d8cc9b1bb21/bin/uautomizer/data/de1c7db4c/c913727ec8dd447088eeed4bff0d7730/FLAG283c4b041 [2019-11-25 08:48:47,691 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:48:47,692 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ab43dd3b-f558-4c22-817b-2d8cc9b1bb21/sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2019-11-25 08:48:47,697 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ab43dd3b-f558-4c22-817b-2d8cc9b1bb21/bin/uautomizer/data/de1c7db4c/c913727ec8dd447088eeed4bff0d7730/FLAG283c4b041 [2019-11-25 08:48:48,127 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ab43dd3b-f558-4c22-817b-2d8cc9b1bb21/bin/uautomizer/data/de1c7db4c/c913727ec8dd447088eeed4bff0d7730 [2019-11-25 08:48:48,129 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:48:48,131 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:48:48,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:48:48,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:48:48,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:48:48,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:48:48" (1/1) ... [2019-11-25 08:48:48,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@325399a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:48, skipping insertion in model container [2019-11-25 08:48:48,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:48:48" (1/1) ... [2019-11-25 08:48:48,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:48:48,161 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:48:48,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:48:48,317 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:48:48,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:48:48,376 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:48:48,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:48 WrapperNode [2019-11-25 08:48:48,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:48:48,377 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:48:48,378 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:48:48,379 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:48:48,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:48" (1/1) ... [2019-11-25 08:48:48,453 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:48" (1/1) ... [2019-11-25 08:48:48,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:48:48,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:48:48,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:48:48,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:48:48,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:48" (1/1) ... [2019-11-25 08:48:48,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:48" (1/1) ... [2019-11-25 08:48:48,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:48" (1/1) ... [2019-11-25 08:48:48,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:48" (1/1) ... [2019-11-25 08:48:48,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:48" (1/1) ... [2019-11-25 08:48:48,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:48" (1/1) ... [2019-11-25 08:48:48,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:48" (1/1) ... [2019-11-25 08:48:48,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:48:48,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:48:48,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:48:48,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:48:48,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab43dd3b-f558-4c22-817b-2d8cc9b1bb21/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:48:48,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:48:48,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-11-25 08:48:48,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-25 08:48:48,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:48:48,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:48:48,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-25 08:48:48,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-25 08:48:48,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:48:48,847 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:48:48,848 INFO L284 CfgBuilder]: Removed 14 assume(true) statements. [2019-11-25 08:48:48,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:48:48 BoogieIcfgContainer [2019-11-25 08:48:48,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:48:48,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:48:48,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:48:48,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:48:48,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:48:48" (1/3) ... [2019-11-25 08:48:48,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74527ae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:48:48, skipping insertion in model container [2019-11-25 08:48:48,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:48" (2/3) ... [2019-11-25 08:48:48,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74527ae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:48:48, skipping insertion in model container [2019-11-25 08:48:48,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:48:48" (3/3) ... [2019-11-25 08:48:48,856 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1071.c [2019-11-25 08:48:48,865 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:48:48,875 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:48:48,894 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:48:48,913 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:48:48,913 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:48:48,913 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:48:48,913 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:48:48,913 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:48:48,913 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:48:48,913 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:48:48,913 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:48:48,926 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-11-25 08:48:48,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-25 08:48:48,932 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:48,932 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:48,933 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:48:48,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:48,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1945097259, now seen corresponding path program 1 times [2019-11-25 08:48:48,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:48:48,945 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561039938] [2019-11-25 08:48:48,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab43dd3b-f558-4c22-817b-2d8cc9b1bb21/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-25 08:48:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:49,034 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-25 08:48:49,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:49,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:49,048 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:48:49,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:49,053 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561039938] [2019-11-25 08:48:49,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:48:49,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-25 08:48:49,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239693625] [2019-11-25 08:48:49,059 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:48:49,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:48:49,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:48:49,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:48:49,071 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-11-25 08:48:49,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:49,088 INFO L93 Difference]: Finished difference Result 40 states and 58 transitions. [2019-11-25 08:48:49,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:48:49,089 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-25 08:48:49,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:49,098 INFO L225 Difference]: With dead ends: 40 [2019-11-25 08:48:49,098 INFO L226 Difference]: Without dead ends: 18 [2019-11-25 08:48:49,101 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:48:49,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-25 08:48:49,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-25 08:48:49,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-25 08:48:49,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-11-25 08:48:49,132 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2019-11-25 08:48:49,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:49,133 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-11-25 08:48:49,133 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:48:49,133 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-11-25 08:48:49,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:48:49,134 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:49,134 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:49,347 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-25 08:48:49,347 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:48:49,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:49,348 INFO L82 PathProgramCache]: Analyzing trace with hash -390209938, now seen corresponding path program 1 times [2019-11-25 08:48:49,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:48:49,348 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [673705960] [2019-11-25 08:48:49,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab43dd3b-f558-4c22-817b-2d8cc9b1bb21/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-11-25 08:48:49,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:49,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-25 08:48:49,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:49,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:49,535 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:48:49,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:49,567 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [673705960] [2019-11-25 08:48:49,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:48:49,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 5 [2019-11-25 08:48:49,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610143930] [2019-11-25 08:48:49,569 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:48:49,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:48:49,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:48:49,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:48:49,570 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 5 states. [2019-11-25 08:48:49,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:49,627 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2019-11-25 08:48:49,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:48:49,628 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-11-25 08:48:49,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:49,629 INFO L225 Difference]: With dead ends: 29 [2019-11-25 08:48:49,629 INFO L226 Difference]: Without dead ends: 24 [2019-11-25 08:48:49,630 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:48:49,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-25 08:48:49,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2019-11-25 08:48:49,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-25 08:48:49,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-11-25 08:48:49,636 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 11 [2019-11-25 08:48:49,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:49,637 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-11-25 08:48:49,637 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:48:49,637 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-11-25 08:48:49,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-25 08:48:49,638 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:49,638 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:49,859 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-25 08:48:49,860 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:48:49,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:49,860 INFO L82 PathProgramCache]: Analyzing trace with hash 843742638, now seen corresponding path program 1 times [2019-11-25 08:48:49,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:48:49,861 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2118031702] [2019-11-25 08:48:49,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab43dd3b-f558-4c22-817b-2d8cc9b1bb21/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-11-25 08:48:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:49,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-25 08:48:49,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:49,959 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:48:50,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:50,006 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:48:50,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:50,087 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2118031702] [2019-11-25 08:48:50,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:48:50,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-25 08:48:50,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550254039] [2019-11-25 08:48:50,088 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-25 08:48:50,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:48:50,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-25 08:48:50,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:48:50,089 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 10 states. [2019-11-25 08:48:50,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:50,426 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2019-11-25 08:48:50,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:48:50,426 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2019-11-25 08:48:50,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:50,427 INFO L225 Difference]: With dead ends: 24 [2019-11-25 08:48:50,427 INFO L226 Difference]: Without dead ends: 17 [2019-11-25 08:48:50,428 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-11-25 08:48:50,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-25 08:48:50,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-25 08:48:50,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-25 08:48:50,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-11-25 08:48:50,433 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 12 [2019-11-25 08:48:50,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:50,433 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-11-25 08:48:50,433 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-25 08:48:50,434 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-11-25 08:48:50,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-25 08:48:50,435 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:50,435 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:50,638 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-25 08:48:50,639 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:48:50,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:50,639 INFO L82 PathProgramCache]: Analyzing trace with hash -2105231138, now seen corresponding path program 1 times [2019-11-25 08:48:50,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:48:50,640 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037032192] [2019-11-25 08:48:50,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab43dd3b-f558-4c22-817b-2d8cc9b1bb21/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-11-25 08:48:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:50,718 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:48:50,721 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:50,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:50,805 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:48:50,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:50,939 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037032192] [2019-11-25 08:48:50,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:48:50,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-25 08:48:50,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436460847] [2019-11-25 08:48:50,940 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-25 08:48:50,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:48:50,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-25 08:48:50,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:48:50,941 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 8 states. [2019-11-25 08:48:51,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:51,085 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2019-11-25 08:48:51,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:48:51,085 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2019-11-25 08:48:51,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:51,086 INFO L225 Difference]: With dead ends: 17 [2019-11-25 08:48:51,086 INFO L226 Difference]: Without dead ends: 0 [2019-11-25 08:48:51,086 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:48:51,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-25 08:48:51,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-25 08:48:51,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-25 08:48:51,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:48:51,087 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-11-25 08:48:51,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:51,088 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:48:51,088 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-25 08:48:51,088 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:48:51,088 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-25 08:48:51,288 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-25 08:48:51,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-25 08:48:51,452 INFO L444 ceAbstractionStarter]: For program point L56(lines 56 59) no Hoare annotation was computed. [2019-11-25 08:48:51,452 INFO L440 ceAbstractionStarter]: At program point L44(line 44) the Hoare annotation is: (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_trunc_float_~x)) (exists ((ULTIMATE.start_trunc_float_~w~0 (_ BitVec 32))) (= (bvadd (bvashr (bvand (_ bv2139095040 32) ULTIMATE.start_trunc_float_~w~0) (_ bv23 32)) (_ bv4294967169 32)) ULTIMATE.start_trunc_float_~exponent_less_127~0)) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_trunc_float_#res| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))) [2019-11-25 08:48:51,452 INFO L440 ceAbstractionStarter]: At program point L40(lines 12 41) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_trunc_float_~x)) (exists ((ULTIMATE.start_trunc_float_~w~0 (_ BitVec 32))) (= (bvadd (bvashr (bvand (_ bv2139095040 32) ULTIMATE.start_trunc_float_~w~0) (_ bv23 32)) (_ bv4294967169 32)) ULTIMATE.start_trunc_float_~exponent_less_127~0)) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_trunc_float_#res| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))) [2019-11-25 08:48:51,452 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-25 08:48:51,453 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-25 08:48:51,453 INFO L447 ceAbstractionStarter]: At program point L61(lines 46 62) the Hoare annotation is: true [2019-11-25 08:48:51,453 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-25 08:48:51,453 INFO L444 ceAbstractionStarter]: For program point L57(line 57) no Hoare annotation was computed. [2019-11-25 08:48:51,453 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 57) no Hoare annotation was computed. [2019-11-25 08:48:51,453 INFO L444 ceAbstractionStarter]: For program point L24-1(lines 24 28) no Hoare annotation was computed. [2019-11-25 08:48:51,453 INFO L440 ceAbstractionStarter]: At program point L24-2(lines 24 28) the Hoare annotation is: false [2019-11-25 08:48:51,454 INFO L444 ceAbstractionStarter]: For program point L37(lines 37 38) no Hoare annotation was computed. [2019-11-25 08:48:51,454 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-25 08:48:51,454 INFO L444 ceAbstractionStarter]: For program point L21(lines 21 39) no Hoare annotation was computed. [2019-11-25 08:48:51,454 INFO L444 ceAbstractionStarter]: For program point L21-1(lines 21 39) no Hoare annotation was computed. [2019-11-25 08:48:51,454 INFO L444 ceAbstractionStarter]: For program point L30-1(lines 30 34) no Hoare annotation was computed. [2019-11-25 08:48:51,454 INFO L440 ceAbstractionStarter]: At program point L30-2(lines 30 34) the Hoare annotation is: false [2019-11-25 08:48:51,454 INFO L444 ceAbstractionStarter]: For program point L22(lines 22 35) no Hoare annotation was computed. [2019-11-25 08:48:51,455 INFO L444 ceAbstractionStarter]: For program point L14-1(lines 14 18) no Hoare annotation was computed. [2019-11-25 08:48:51,455 INFO L440 ceAbstractionStarter]: At program point L14-2(lines 14 18) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_trunc_float_~x)) [2019-11-25 08:48:51,455 INFO L444 ceAbstractionStarter]: For program point L14-3(lines 14 18) no Hoare annotation was computed. [2019-11-25 08:48:51,463 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-25 08:48:51,464 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-11-25 08:48:51,464 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-25 08:48:51,478 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-25 08:48:51,479 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-11-25 08:48:51,479 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-25 08:48:51,481 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-25 08:48:51,481 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-25 08:48:51,483 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-25 08:48:51,484 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-11-25 08:48:51,484 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-25 08:48:51,485 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-25 08:48:51,486 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-11-25 08:48:51,488 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-25 08:48:51,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:48:51 BoogieIcfgContainer [2019-11-25 08:48:51,495 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:48:51,496 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:48:51,496 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:48:51,496 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:48:51,497 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:48:48" (3/4) ... [2019-11-25 08:48:51,500 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-25 08:48:51,511 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-11-25 08:48:51,512 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-25 08:48:51,512 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-25 08:48:51,532 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2019-11-25 08:48:51,533 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127)) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2019-11-25 08:48:51,533 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((1bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x)) && (\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127)) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2019-11-25 08:48:51,555 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ab43dd3b-f558-4c22-817b-2d8cc9b1bb21/bin/uautomizer/witness.graphml [2019-11-25 08:48:51,556 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:48:51,557 INFO L168 Benchmark]: Toolchain (without parser) took 3426.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 960.4 MB in the beginning and 990.3 MB in the end (delta: -29.9 MB). Peak memory consumption was 119.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:51,558 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:48:51,558 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.05 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:51,559 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 949.7 MB in the beginning and 1.1 GB in the end (delta: -189.0 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:51,559 INFO L168 Benchmark]: Boogie Preprocessor took 29.65 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:48:51,560 INFO L168 Benchmark]: RCFGBuilder took 345.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:51,560 INFO L168 Benchmark]: TraceAbstraction took 2645.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 996.9 MB in the end (delta: 123.3 MB). Peak memory consumption was 123.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:51,561 INFO L168 Benchmark]: Witness Printer took 60.05 ms. Allocated memory is still 1.2 GB. Free memory was 996.9 MB in the beginning and 990.3 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:51,563 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 245.05 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 96.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 949.7 MB in the beginning and 1.1 GB in the end (delta: -189.0 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.65 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 345.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2645.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 996.9 MB in the end (delta: 123.3 MB). Peak memory consumption was 123.3 MB. Max. memory is 11.5 GB. * Witness Printer took 60.05 ms. Allocated memory is still 1.2 GB. Free memory was 996.9 MB in the beginning and 990.3 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 57]: 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: 24]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 44]: Loop Invariant [2019-11-25 08:48:51,576 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-25 08:48:51,576 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-11-25 08:48:51,576 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-25 08:48:51,579 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-25 08:48:51,579 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-11-25 08:48:51,579 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((1bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x)) && (\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127)) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 14]: Loop Invariant [2019-11-25 08:48:51,580 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-25 08:48:51,580 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 12]: Loop Invariant [2019-11-25 08:48:51,581 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-25 08:48:51,581 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-11-25 08:48:51,581 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-25 08:48:51,581 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-25 08:48:51,582 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-11-25 08:48:51,582 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127)) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Result: SAFE, OverallTime: 2.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 54 SDtfs, 36 SDslu, 88 SDs, 0 SdLazy, 46 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 10 NumberOfFragments, 63 HoareAnnotationTreeSize, 6 FomulaSimplifications, 32 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 5 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 86 ConstructedInterpolants, 14 QuantifiedInterpolants, 3279 SizeOfPredicates, 21 NumberOfNonLiveVariables, 130 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...