./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1052a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1e549a16-a8d7-48df-b40a-9532d1a02a79/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1e549a16-a8d7-48df-b40a-9532d1a02a79/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1e549a16-a8d7-48df-b40a-9532d1a02a79/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1e549a16-a8d7-48df-b40a-9532d1a02a79/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1052a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1e549a16-a8d7-48df-b40a-9532d1a02a79/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1e549a16-a8d7-48df-b40a-9532d1a02a79/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 48a71202a0e82b0e2ae39f845042f68e3a18e5b0 ................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1e549a16-a8d7-48df-b40a-9532d1a02a79/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1e549a16-a8d7-48df-b40a-9532d1a02a79/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1e549a16-a8d7-48df-b40a-9532d1a02a79/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1e549a16-a8d7-48df-b40a-9532d1a02a79/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1052a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1e549a16-a8d7-48df-b40a-9532d1a02a79/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1e549a16-a8d7-48df-b40a-9532d1a02a79/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 48a71202a0e82b0e2ae39f845042f68e3a18e5b0 ........................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:07:27,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:07:27,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:07:27,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:07:27,759 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:07:27,760 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:07:27,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:07:27,765 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:07:27,768 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:07:27,769 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:07:27,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:07:27,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:07:27,773 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:07:27,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:07:27,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:07:27,778 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:07:27,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:07:27,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:07:27,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:07:27,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:07:27,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:07:27,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:07:27,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:07:27,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:07:27,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:07:27,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:07:27,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:07:27,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:07:27,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:07:27,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:07:27,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:07:27,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:07:27,807 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:07:27,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:07:27,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:07:27,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:07:27,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:07:27,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:07:27,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:07:27,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:07:27,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:07:27,817 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1e549a16-a8d7-48df-b40a-9532d1a02a79/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:07:27,852 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:07:27,852 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:07:27,854 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:07:27,854 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:07:27,854 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:07:27,855 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:07:27,855 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:07:27,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:07:27,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:07:27,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:07:27,856 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:07:27,856 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:07:27,856 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:07:27,857 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:07:27,857 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:07:27,857 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:07:27,857 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:07:27,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:07:27,858 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:07:27,858 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:07:27,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:07:27,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:07:27,859 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:07:27,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:07:27,859 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:07:27,859 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:07:27,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:07:27,860 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:07:27,860 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:07:27,860 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_1e549a16-a8d7-48df-b40a-9532d1a02a79/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1e549a16-a8d7-48df-b40a-9532d1a02a79/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48a71202a0e82b0e2ae39f845042f68e3a18e5b0 [2020-11-28 03:07:28,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:07:28,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:07:28,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:07:28,256 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:07:28,260 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:07:28,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1e549a16-a8d7-48df-b40a-9532d1a02a79/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1052a.c [2020-11-28 03:07:28,396 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1e549a16-a8d7-48df-b40a-9532d1a02a79/bin/uautomizer/data/50df5a842/646ddf57d0ae47fb8f00f915207929df/FLAG71ab268c9 [2020-11-28 03:07:28,932 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:07:28,932 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1e549a16-a8d7-48df-b40a-9532d1a02a79/sv-benchmarks/c/float-newlib/double_req_bl_1052a.c [2020-11-28 03:07:28,962 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1e549a16-a8d7-48df-b40a-9532d1a02a79/bin/uautomizer/data/50df5a842/646ddf57d0ae47fb8f00f915207929df/FLAG71ab268c9 [2020-11-28 03:07:29,262 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1e549a16-a8d7-48df-b40a-9532d1a02a79/bin/uautomizer/data/50df5a842/646ddf57d0ae47fb8f00f915207929df [2020-11-28 03:07:29,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:07:29,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:07:29,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:07:29,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:07:29,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:07:29,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:07:29" (1/1) ... [2020-11-28 03:07:29,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6983ff8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:29, skipping insertion in model container [2020-11-28 03:07:29,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:07:29" (1/1) ... [2020-11-28 03:07:29,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:07:29,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:07:29,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:07:29,533 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:07:29,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:07:29,606 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:07:29,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:29 WrapperNode [2020-11-28 03:07:29,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:07:29,613 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:07:29,613 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:07:29,614 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:07:29,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:29" (1/1) ... [2020-11-28 03:07:29,634 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:29" (1/1) ... [2020-11-28 03:07:29,666 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:07:29,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:07:29,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:07:29,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:07:29,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:29" (1/1) ... [2020-11-28 03:07:29,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:29" (1/1) ... [2020-11-28 03:07:29,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:29" (1/1) ... [2020-11-28 03:07:29,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:29" (1/1) ... [2020-11-28 03:07:29,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:29" (1/1) ... [2020-11-28 03:07:29,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:29" (1/1) ... [2020-11-28 03:07:29,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:29" (1/1) ... [2020-11-28 03:07:29,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:07:29,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:07:29,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:07:29,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:07:29,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1e549a16-a8d7-48df-b40a-9532d1a02a79/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:07:29,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:07:29,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:07:29,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-28 03:07:29,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:07:29,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 03:07:29,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:07:29,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:07:29,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:07:29,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:07:30,382 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:07:30,382 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-28 03:07:30,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:07:30 BoogieIcfgContainer [2020-11-28 03:07:30,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:07:30,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:07:30,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:07:30,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:07:30,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:07:29" (1/3) ... [2020-11-28 03:07:30,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756898df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:07:30, skipping insertion in model container [2020-11-28 03:07:30,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:29" (2/3) ... [2020-11-28 03:07:30,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756898df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:07:30, skipping insertion in model container [2020-11-28 03:07:30,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:07:30" (3/3) ... [2020-11-28 03:07:30,400 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052a.c [2020-11-28 03:07:30,422 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:07:30,431 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:07:30,455 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:07:30,502 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:07:30,502 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:07:30,502 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:07:30,502 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:07:30,502 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:07:30,503 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:07:30,503 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:07:30,503 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:07:30,519 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-11-28 03:07:30,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:07:30,524 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:07:30,525 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:07:30,526 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:07:30,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:30,533 INFO L82 PathProgramCache]: Analyzing trace with hash 658478814, now seen corresponding path program 1 times [2020-11-28 03:07:30,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:30,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683962635] [2020-11-28 03:07:30,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:30,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:30,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:07:30,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683962635] [2020-11-28 03:07:30,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:07:30,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:07:30,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709413817] [2020-11-28 03:07:30,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:07:30,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:07:30,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:07:30,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:07:30,715 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2020-11-28 03:07:30,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:07:30,737 INFO L93 Difference]: Finished difference Result 73 states and 115 transitions. [2020-11-28 03:07:30,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:07:30,738 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-28 03:07:30,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:07:30,750 INFO L225 Difference]: With dead ends: 73 [2020-11-28 03:07:30,750 INFO L226 Difference]: Without dead ends: 34 [2020-11-28 03:07:30,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:07:30,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-28 03:07:30,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-11-28 03:07:30,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-28 03:07:30,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2020-11-28 03:07:30,850 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 13 [2020-11-28 03:07:30,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:07:30,851 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2020-11-28 03:07:30,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:07:30,851 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2020-11-28 03:07:30,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:07:30,854 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:07:30,865 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:07:30,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:07:30,867 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:07:30,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:30,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1562173395, now seen corresponding path program 1 times [2020-11-28 03:07:30,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:30,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814836100] [2020-11-28 03:07:30,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:31,065 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:31,217 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:31,280 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:07:31,280 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:07:31,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:07:31,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:07:31 BoogieIcfgContainer [2020-11-28 03:07:31,345 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:07:31,346 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:07:31,346 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:07:31,347 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:07:31,347 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:07:30" (3/4) ... [2020-11-28 03:07:31,351 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:07:31,351 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:07:31,357 INFO L168 Benchmark]: Toolchain (without parser) took 2081.96 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 48.4 MB in the beginning and 71.8 MB in the end (delta: -23.4 MB). Peak memory consumption was 327.3 kB. Max. memory is 16.1 GB. [2020-11-28 03:07:31,357 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory is still 49.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:07:31,359 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.82 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 48.2 MB in the beginning and 85.3 MB in the end (delta: -37.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:31,360 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.47 ms. Allocated memory is still 107.0 MB. Free memory was 86.7 MB in the beginning and 85.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:07:31,361 INFO L168 Benchmark]: Boogie Preprocessor took 44.21 ms. Allocated memory is still 107.0 MB. Free memory was 85.2 MB in the beginning and 83.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:31,363 INFO L168 Benchmark]: RCFGBuilder took 671.46 ms. Allocated memory is still 107.0 MB. Free memory was 83.3 MB in the beginning and 60.9 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:31,364 INFO L168 Benchmark]: TraceAbstraction took 954.36 ms. Allocated memory is still 107.0 MB. Free memory was 60.2 MB in the beginning and 72.6 MB in the end (delta: -12.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:07:31,365 INFO L168 Benchmark]: Witness Printer took 5.23 ms. Allocated memory is still 107.0 MB. Free memory was 72.6 MB in the beginning and 71.8 MB in the end (delta: 795.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:31,378 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory is still 49.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 331.82 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 48.2 MB in the beginning and 85.3 MB in the end (delta: -37.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.47 ms. Allocated memory is still 107.0 MB. Free memory was 86.7 MB in the beginning and 85.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.21 ms. Allocated memory is still 107.0 MB. Free memory was 85.2 MB in the beginning and 83.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 671.46 ms. Allocated memory is still 107.0 MB. Free memory was 83.3 MB in the beginning and 60.9 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 954.36 ms. Allocated memory is still 107.0 MB. Free memory was 60.2 MB in the beginning and 72.6 MB in the end (delta: -12.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.23 ms. Allocated memory is still 107.0 MB. Free memory was 72.6 MB in the beginning and 71.8 MB in the end (delta: 795.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 39, overapproximation of bitwiseOr at line 91, overapproximation of someBinaryArithmeticDOUBLEoperation at line 103, overapproximation of bitwiseAnd at line 90. Possible FailurePath: [L16] static const double huge_floor = 1.0e300; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L103] double x = 1.0 / 0.0; [L19] __int32_t i0, i1, j0; [L20] __uint32_t i, j; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (i0) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (i1) = ew_u.parts.lsw [L27] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] COND TRUE j0 < 20 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L29] COND FALSE !(j0 < 0) [L39] i = (0x000fffff) >> j0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L40] COND TRUE ((i0 & i) | i1) == 0 [L41] return x; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L104] double res = floor_double(x); [L83] __int32_t hx, lx; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L85] ieee_double_shape_type ew_u; [L86] ew_u.value = (x) [L87] EXPR ew_u.parts.msw [L87] (hx) = ew_u.parts.msw [L88] EXPR ew_u.parts.lsw [L88] (lx) = ew_u.parts.lsw [L90] hx &= 0x7fffffff [L91] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L92] hx = 0x7ff00000 - hx [L93] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L107] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1052a.c", 3, "reach_error") VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 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=38occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:07:34,386 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-11-28 03:07:34,477 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:07:34,478 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:07:34,479 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:07:34,480 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:07:34,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:07:34,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:07:34,484 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:07:34,484 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:07:34,485 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:07:34,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:07:34,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:07:34,488 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1e549a16-a8d7-48df-b40a-9532d1a02a79/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-28 03:07:34,528 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:07:34,535 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:07:34,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:07:34,539 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:07:34,539 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:07:34,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:07:34,540 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:07:34,540 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:07:34,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:07:34,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:07:34,542 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:07:34,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:07:34,543 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 03:07:34,543 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 03:07:34,544 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:07:34,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:07:34,544 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:07:34,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:07:34,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:07:34,545 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:07:34,545 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:07:34,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:07:34,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:07:34,546 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:07:34,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:07:34,547 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:07:34,547 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-28 03:07:34,547 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 03:07:34,547 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:07:34,548 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:07:34,548 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 03:07:34,548 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_1e549a16-a8d7-48df-b40a-9532d1a02a79/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1e549a16-a8d7-48df-b40a-9532d1a02a79/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48a71202a0e82b0e2ae39f845042f68e3a18e5b0 [2020-11-28 03:07:35,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:07:35,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:07:35,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:07:35,079 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:07:35,081 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:07:35,082 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1e549a16-a8d7-48df-b40a-9532d1a02a79/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1052a.c [2020-11-28 03:07:35,159 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1e549a16-a8d7-48df-b40a-9532d1a02a79/bin/uautomizer/data/91ccd02fc/2806c3620dfe4dc584ab6b6dd893bb9b/FLAG4ea2c1c40 [2020-11-28 03:07:35,766 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:07:35,767 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1e549a16-a8d7-48df-b40a-9532d1a02a79/sv-benchmarks/c/float-newlib/double_req_bl_1052a.c [2020-11-28 03:07:35,787 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1e549a16-a8d7-48df-b40a-9532d1a02a79/bin/uautomizer/data/91ccd02fc/2806c3620dfe4dc584ab6b6dd893bb9b/FLAG4ea2c1c40 [2020-11-28 03:07:36,120 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1e549a16-a8d7-48df-b40a-9532d1a02a79/bin/uautomizer/data/91ccd02fc/2806c3620dfe4dc584ab6b6dd893bb9b [2020-11-28 03:07:36,123 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:07:36,127 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:07:36,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:07:36,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:07:36,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:07:36,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:07:36" (1/1) ... [2020-11-28 03:07:36,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@911095f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:36, skipping insertion in model container [2020-11-28 03:07:36,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:07:36" (1/1) ... [2020-11-28 03:07:36,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:07:36,190 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:07:36,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:07:36,575 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:07:36,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:07:36,667 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:07:36,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:36 WrapperNode [2020-11-28 03:07:36,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:07:36,670 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:07:36,670 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:07:36,670 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:07:36,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:36" (1/1) ... [2020-11-28 03:07:36,710 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:36" (1/1) ... [2020-11-28 03:07:36,758 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:07:36,759 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:07:36,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:07:36,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:07:36,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:36" (1/1) ... [2020-11-28 03:07:36,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:36" (1/1) ... [2020-11-28 03:07:36,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:36" (1/1) ... [2020-11-28 03:07:36,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:36" (1/1) ... [2020-11-28 03:07:36,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:36" (1/1) ... [2020-11-28 03:07:36,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:36" (1/1) ... [2020-11-28 03:07:36,832 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:36" (1/1) ... [2020-11-28 03:07:36,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:07:36,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:07:36,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:07:36,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:07:36,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1e549a16-a8d7-48df-b40a-9532d1a02a79/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:07:36,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-28 03:07:36,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-28 03:07:36,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 03:07:36,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:07:36,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 03:07:36,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:07:36,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:07:36,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-28 03:07:36,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:07:39,030 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:07:39,030 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-28 03:07:39,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:07:39 BoogieIcfgContainer [2020-11-28 03:07:39,032 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:07:39,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:07:39,035 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:07:39,038 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:07:39,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:07:36" (1/3) ... [2020-11-28 03:07:39,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@263f52bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:07:39, skipping insertion in model container [2020-11-28 03:07:39,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:36" (2/3) ... [2020-11-28 03:07:39,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@263f52bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:07:39, skipping insertion in model container [2020-11-28 03:07:39,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:07:39" (3/3) ... [2020-11-28 03:07:39,042 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052a.c [2020-11-28 03:07:39,056 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:07:39,061 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:07:39,076 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:07:39,106 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:07:39,106 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:07:39,106 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:07:39,106 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:07:39,106 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:07:39,107 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:07:39,107 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:07:39,107 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:07:39,122 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-11-28 03:07:39,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:07:39,128 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:07:39,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:07:39,129 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:07:39,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:39,137 INFO L82 PathProgramCache]: Analyzing trace with hash 658478814, now seen corresponding path program 1 times [2020-11-28 03:07:39,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:07:39,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217133207] [2020-11-28 03:07:39,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1e549a16-a8d7-48df-b40a-9532d1a02a79/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-28 03:07:39,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:39,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 03:07:39,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:07:39,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:07:39,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:07:39,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:07:39,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217133207] [2020-11-28 03:07:39,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:07:39,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 03:07:39,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075827897] [2020-11-28 03:07:39,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:07:39,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:07:39,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:07:39,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:07:39,416 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2020-11-28 03:07:39,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:07:39,449 INFO L93 Difference]: Finished difference Result 73 states and 115 transitions. [2020-11-28 03:07:39,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:07:39,451 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-28 03:07:39,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:07:39,467 INFO L225 Difference]: With dead ends: 73 [2020-11-28 03:07:39,468 INFO L226 Difference]: Without dead ends: 34 [2020-11-28 03:07:39,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:07:39,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-28 03:07:39,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-11-28 03:07:39,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-28 03:07:39,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2020-11-28 03:07:39,529 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 13 [2020-11-28 03:07:39,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:07:39,530 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2020-11-28 03:07:39,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:07:39,530 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2020-11-28 03:07:39,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:07:39,533 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:07:39,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:07:39,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 03:07:39,759 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:07:39,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:39,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1562173395, now seen corresponding path program 1 times [2020-11-28 03:07:39,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:07:39,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667593068] [2020-11-28 03:07:39,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1e549a16-a8d7-48df-b40a-9532d1a02a79/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-28 03:07:39,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:39,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:07:39,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:07:40,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:07:40,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:07:40,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:07:40,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667593068] [2020-11-28 03:07:40,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:07:40,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-28 03:07:40,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552559154] [2020-11-28 03:07:40,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:07:40,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:07:40,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:07:40,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:07:40,430 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand 8 states. [2020-11-28 03:07:40,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:07:40,852 INFO L93 Difference]: Finished difference Result 42 states and 55 transitions. [2020-11-28 03:07:40,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:07:40,854 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-11-28 03:07:40,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:07:40,856 INFO L225 Difference]: With dead ends: 42 [2020-11-28 03:07:40,857 INFO L226 Difference]: Without dead ends: 16 [2020-11-28 03:07:40,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:07:40,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-28 03:07:40,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-28 03:07:40,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 03:07:40,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-11-28 03:07:40,871 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 15 [2020-11-28 03:07:40,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:07:40,872 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-11-28 03:07:40,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:07:40,874 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-11-28 03:07:40,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:07:40,876 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:07:40,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:07:41,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 03:07:41,079 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:07:41,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:41,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1582346339, now seen corresponding path program 1 times [2020-11-28 03:07:41,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:07:41,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511822665] [2020-11-28 03:07:41,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1e549a16-a8d7-48df-b40a-9532d1a02a79/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-28 03:07:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:41,387 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:41,603 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:41,683 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-28 03:07:41,688 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:07:41,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 03:07:41,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:07:41 BoogieIcfgContainer [2020-11-28 03:07:41,964 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:07:41,965 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:07:41,965 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:07:41,965 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:07:41,966 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:07:39" (3/4) ... [2020-11-28 03:07:41,968 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:07:42,057 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1e549a16-a8d7-48df-b40a-9532d1a02a79/bin/uautomizer/witness.graphml [2020-11-28 03:07:42,057 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:07:42,070 INFO L168 Benchmark]: Toolchain (without parser) took 5940.95 ms. Allocated memory is still 67.1 MB. Free memory was 33.4 MB in the beginning and 26.8 MB in the end (delta: 6.5 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:42,071 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 67.1 MB. Free memory is still 49.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:07:42,072 INFO L168 Benchmark]: CACSL2BoogieTranslator took 537.02 ms. Allocated memory is still 67.1 MB. Free memory was 33.2 MB in the beginning and 46.7 MB in the end (delta: -13.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:42,073 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.72 ms. Allocated memory is still 67.1 MB. Free memory was 46.7 MB in the beginning and 44.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:42,077 INFO L168 Benchmark]: Boogie Preprocessor took 82.57 ms. Allocated memory is still 67.1 MB. Free memory was 44.7 MB in the beginning and 42.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:42,079 INFO L168 Benchmark]: RCFGBuilder took 2189.60 ms. Allocated memory is still 67.1 MB. Free memory was 42.9 MB in the beginning and 45.2 MB in the end (delta: -2.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:42,080 INFO L168 Benchmark]: TraceAbstraction took 2929.57 ms. Allocated memory is still 67.1 MB. Free memory was 44.9 MB in the beginning and 29.5 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:42,080 INFO L168 Benchmark]: Witness Printer took 102.35 ms. Allocated memory is still 67.1 MB. Free memory was 29.5 MB in the beginning and 26.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:42,083 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 67.1 MB. Free memory is still 49.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 537.02 ms. Allocated memory is still 67.1 MB. Free memory was 33.2 MB in the beginning and 46.7 MB in the end (delta: -13.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 88.72 ms. Allocated memory is still 67.1 MB. Free memory was 46.7 MB in the beginning and 44.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 82.57 ms. Allocated memory is still 67.1 MB. Free memory was 44.7 MB in the beginning and 42.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2189.60 ms. Allocated memory is still 67.1 MB. Free memory was 42.9 MB in the beginning and 45.2 MB in the end (delta: -2.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2929.57 ms. Allocated memory is still 67.1 MB. Free memory was 44.9 MB in the beginning and 29.5 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. * Witness Printer took 102.35 ms. Allocated memory is still 67.1 MB. Free memory was 29.5 MB in the beginning and 26.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L16] static const double huge_floor = 1.0e300; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L103] double x = 1.0 / 0.0; [L19] __int32_t i0, i1, j0; [L20] __uint32_t i, j; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (i0) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (i1) = ew_u.parts.lsw [L27] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] COND FALSE !(j0 < 20) VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L49] COND TRUE j0 > 51 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L50] COND TRUE j0 == 0x400 [L51] return x + x; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L104] double res = floor_double(x); [L83] __int32_t hx, lx; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L85] ieee_double_shape_type ew_u; [L86] ew_u.value = (x) [L87] EXPR ew_u.parts.msw [L87] (hx) = ew_u.parts.msw [L88] EXPR ew_u.parts.lsw [L88] (lx) = ew_u.parts.lsw [L90] hx &= 0x7fffffff [L91] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L92] hx = 0x7ff00000 - hx [L93] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L107] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1052a.c", 3, "reach_error") VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 61 SDtfs, 44 SDslu, 6 SDs, 0 SdLazy, 9 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 52 ConstructedInterpolants, 5 QuantifiedInterpolants, 2276 SizeOfPredicates, 8 NumberOfNonLiveVariables, 110 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...