./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1300.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_685c64ef-7ec2-4c42-855a-8b25be76a72a/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_685c64ef-7ec2-4c42-855a-8b25be76a72a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_685c64ef-7ec2-4c42-855a-8b25be76a72a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_685c64ef-7ec2-4c42-855a-8b25be76a72a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1300.c -s /tmp/vcloud-vcloud-master/worker/run_dir_685c64ef-7ec2-4c42-855a-8b25be76a72a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_685c64ef-7ec2-4c42-855a-8b25be76a72a/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 6775086e1d92d324fce714cac739cb50ade22067 ...................................................................................................................................................................................................................................................................................................................................... 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_685c64ef-7ec2-4c42-855a-8b25be76a72a/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_685c64ef-7ec2-4c42-855a-8b25be76a72a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_685c64ef-7ec2-4c42-855a-8b25be76a72a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_685c64ef-7ec2-4c42-855a-8b25be76a72a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1300.c -s /tmp/vcloud-vcloud-master/worker/run_dir_685c64ef-7ec2-4c42-855a-8b25be76a72a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_685c64ef-7ec2-4c42-855a-8b25be76a72a/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 6775086e1d92d324fce714cac739cb50ade22067 ......................................................................................................................................................................................................................................................................................................................................................... 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 03:01:30,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:01:30,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:01:30,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:01:30,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:01:30,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:01:30,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:01:30,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:01:30,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:01:30,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:01:30,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:01:30,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:01:30,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:01:30,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:01:30,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:01:30,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:01:30,743 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:01:30,744 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:01:30,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:01:30,751 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:01:30,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:01:30,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:01:30,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:01:30,760 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:01:30,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:01:30,766 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:01:30,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:01:30,768 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:01:30,769 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:01:30,770 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:01:30,771 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:01:30,773 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:01:30,774 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:01:30,775 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:01:30,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:01:30,777 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:01:30,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:01:30,779 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:01:30,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:01:30,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:01:30,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:01:30,786 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_685c64ef-7ec2-4c42-855a-8b25be76a72a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:01:30,835 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:01:30,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:01:30,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:01:30,838 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:01:30,838 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:01:30,838 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:01:30,839 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:01:30,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:01:30,839 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:01:30,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:01:30,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:01:30,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:01:30,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:01:30,842 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:01:30,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:01:30,842 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:01:30,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:01:30,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:01:30,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:01:30,843 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:01:30,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:01:30,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:01:30,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:01:30,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:01:30,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:01:30,845 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:01:30,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:01:30,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:01:30,846 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:01:30,846 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_685c64ef-7ec2-4c42-855a-8b25be76a72a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_685c64ef-7ec2-4c42-855a-8b25be76a72a/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6775086e1d92d324fce714cac739cb50ade22067 [2020-11-28 03:01:31,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:01:31,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:01:31,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:01:31,197 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:01:31,198 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:01:31,199 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_685c64ef-7ec2-4c42-855a-8b25be76a72a/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1300.c [2020-11-28 03:01:31,301 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_685c64ef-7ec2-4c42-855a-8b25be76a72a/bin/uautomizer/data/b69b73b6c/ea21769c79b04a3a9acfd29d8bb1f89b/FLAG68b703696 [2020-11-28 03:01:31,881 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:01:31,884 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_685c64ef-7ec2-4c42-855a-8b25be76a72a/sv-benchmarks/c/float-newlib/double_req_bl_1300.c [2020-11-28 03:01:31,904 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_685c64ef-7ec2-4c42-855a-8b25be76a72a/bin/uautomizer/data/b69b73b6c/ea21769c79b04a3a9acfd29d8bb1f89b/FLAG68b703696 [2020-11-28 03:01:32,205 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_685c64ef-7ec2-4c42-855a-8b25be76a72a/bin/uautomizer/data/b69b73b6c/ea21769c79b04a3a9acfd29d8bb1f89b [2020-11-28 03:01:32,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:01:32,212 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:01:32,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:01:32,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:01:32,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:01:32,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:01:32" (1/1) ... [2020-11-28 03:01:32,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5097166a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:32, skipping insertion in model container [2020-11-28 03:01:32,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:01:32" (1/1) ... [2020-11-28 03:01:32,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:01:32,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:01:32,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:01:32,550 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:01:32,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:01:32,601 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:01:32,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:32 WrapperNode [2020-11-28 03:01:32,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:01:32,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:01:32,604 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:01:32,604 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:01:32,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:32" (1/1) ... [2020-11-28 03:01:32,624 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:32" (1/1) ... [2020-11-28 03:01:32,655 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:01:32,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:01:32,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:01:32,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:01:32,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:32" (1/1) ... [2020-11-28 03:01:32,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:32" (1/1) ... [2020-11-28 03:01:32,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:32" (1/1) ... [2020-11-28 03:01:32,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:32" (1/1) ... [2020-11-28 03:01:32,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:32" (1/1) ... [2020-11-28 03:01:32,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:32" (1/1) ... [2020-11-28 03:01:32,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:32" (1/1) ... [2020-11-28 03:01:32,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:01:32,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:01:32,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:01:32,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:01:32,698 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_685c64ef-7ec2-4c42-855a-8b25be76a72a/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 03:01:32,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:01:32,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:01:32,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 03:01:32,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:01:32,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:01:32,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:01:32,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:01:33,328 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:01:33,336 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-28 03:01:33,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:01:33 BoogieIcfgContainer [2020-11-28 03:01:33,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:01:33,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:01:33,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:01:33,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:01:33,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:01:32" (1/3) ... [2020-11-28 03:01:33,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@759c93c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:01:33, skipping insertion in model container [2020-11-28 03:01:33,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:32" (2/3) ... [2020-11-28 03:01:33,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@759c93c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:01:33, skipping insertion in model container [2020-11-28 03:01:33,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:01:33" (3/3) ... [2020-11-28 03:01:33,376 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1300.c [2020-11-28 03:01:33,389 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:01:33,394 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:01:33,408 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:01:33,436 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:01:33,436 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:01:33,436 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:01:33,436 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:01:33,437 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:01:33,437 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:01:33,437 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:01:33,437 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:01:33,453 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-11-28 03:01:33,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:01:33,459 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:01:33,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:01:33,461 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:01:33,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:33,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1033094394, now seen corresponding path program 1 times [2020-11-28 03:01:33,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:33,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396034971] [2020-11-28 03:01:33,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:33,682 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 03:01:33,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396034971] [2020-11-28 03:01:33,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:01:33,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:01:33,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263961678] [2020-11-28 03:01:33,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:01:33,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:01:33,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:01:33,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:01:33,704 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-11-28 03:01:33,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:01:33,719 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2020-11-28 03:01:33,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:01:33,721 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-11-28 03:01:33,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:01:33,731 INFO L225 Difference]: With dead ends: 39 [2020-11-28 03:01:33,731 INFO L226 Difference]: Without dead ends: 16 [2020-11-28 03:01:33,735 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 03:01:33,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-28 03:01:33,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-28 03:01:33,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 03:01:33,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-11-28 03:01:33,785 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2020-11-28 03:01:33,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:01:33,785 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-28 03:01:33,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:01:33,785 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-11-28 03:01:33,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:01:33,787 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:01:33,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:01:33,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:01:33,788 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:01:33,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:33,789 INFO L82 PathProgramCache]: Analyzing trace with hash 499625812, now seen corresponding path program 1 times [2020-11-28 03:01:33,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:33,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984738043] [2020-11-28 03:01:33,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:33,972 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 03:01:33,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984738043] [2020-11-28 03:01:33,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:01:33,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:01:33,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572766474] [2020-11-28 03:01:33,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:01:33,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:01:33,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:01:33,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:01:33,978 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 3 states. [2020-11-28 03:01:34,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:01:34,027 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2020-11-28 03:01:34,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:01:34,028 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-11-28 03:01:34,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:01:34,028 INFO L225 Difference]: With dead ends: 24 [2020-11-28 03:01:34,029 INFO L226 Difference]: Without dead ends: 16 [2020-11-28 03:01:34,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:01:34,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-28 03:01:34,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-28 03:01:34,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 03:01:34,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-11-28 03:01:34,034 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 14 [2020-11-28 03:01:34,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:01:34,035 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-11-28 03:01:34,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:01:34,035 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-11-28 03:01:34,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:01:34,036 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:01:34,036 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:01:34,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:01:34,036 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:01:34,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:34,038 INFO L82 PathProgramCache]: Analyzing trace with hash 2210040, now seen corresponding path program 1 times [2020-11-28 03:01:34,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:34,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861823526] [2020-11-28 03:01:34,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:34,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:34,228 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:34,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:34,370 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:34,429 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:01:34,429 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:01:34,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:01:34,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:01:34 BoogieIcfgContainer [2020-11-28 03:01:34,519 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:01:34,520 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:01:34,520 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:01:34,521 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:01:34,521 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:01:33" (3/4) ... [2020-11-28 03:01:34,527 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:01:34,527 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:01:34,532 INFO L168 Benchmark]: Toolchain (without parser) took 2315.92 ms. Allocated memory is still 113.2 MB. Free memory was 80.8 MB in the beginning and 91.3 MB in the end (delta: -10.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:01:34,535 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 77.6 MB. Free memory was 51.0 MB in the beginning and 51.0 MB in the end (delta: 28.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:01:34,537 INFO L168 Benchmark]: CACSL2BoogieTranslator took 381.58 ms. Allocated memory is still 113.2 MB. Free memory was 80.4 MB in the beginning and 91.1 MB in the end (delta: -10.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:34,538 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.04 ms. Allocated memory is still 113.2 MB. Free memory was 91.1 MB in the beginning and 89.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:34,539 INFO L168 Benchmark]: Boogie Preprocessor took 35.68 ms. Allocated memory is still 113.2 MB. Free memory was 89.0 MB in the beginning and 87.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:34,548 INFO L168 Benchmark]: RCFGBuilder took 642.84 ms. Allocated memory is still 113.2 MB. Free memory was 87.5 MB in the beginning and 71.3 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:34,550 INFO L168 Benchmark]: TraceAbstraction took 1172.09 ms. Allocated memory is still 113.2 MB. Free memory was 70.7 MB in the beginning and 92.1 MB in the end (delta: -21.4 MB). Peak memory consumption was 39.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:34,552 INFO L168 Benchmark]: Witness Printer took 7.35 ms. Allocated memory is still 113.2 MB. Free memory was 92.1 MB in the beginning and 91.3 MB in the end (delta: 771.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:01:34,575 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 77.6 MB. Free memory was 51.0 MB in the beginning and 51.0 MB in the end (delta: 28.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 381.58 ms. Allocated memory is still 113.2 MB. Free memory was 80.4 MB in the beginning and 91.1 MB in the end (delta: -10.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.04 ms. Allocated memory is still 113.2 MB. Free memory was 91.1 MB in the beginning and 89.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.68 ms. Allocated memory is still 113.2 MB. Free memory was 89.0 MB in the beginning and 87.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 642.84 ms. Allocated memory is still 113.2 MB. Free memory was 87.5 MB in the beginning and 71.3 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1172.09 ms. Allocated memory is still 113.2 MB. Free memory was 70.7 MB in the beginning and 92.1 MB in the end (delta: -21.4 MB). Peak memory consumption was 39.9 MB. Max. memory is 16.1 GB. * Witness Printer took 7.35 ms. Allocated memory is still 113.2 MB. Free memory was 92.1 MB in the beginning and 91.3 MB in the end (delta: 771.7 kB). There was no memory consumed. 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 bitwiseOr at line 27, overapproximation of bitwiseAnd at line 42, overapproximation of someBinaryDOUBLEComparisonOperation at line 60, overapproximation of to_real at line 57. Possible FailurePath: [L52] double x = __VERIFIER_nondet_double(); [L19] __int32_t hx, lx; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (hx) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lx) = ew_u.parts.lsw [L26] hx &= 0x7fffffff [L27] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L28] hx = 0x7ff00000 - hx [L29] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L55] !isinf_double(x) && !isnan_double(x) [L33] return x != x; [L55] !isinf_double(x) && !isnan_double(x) [L55] COND TRUE !isinf_double(x) && !isnan_double(x) [L36] __int32_t hx; [L38] ieee_double_shape_type gh_u; [L39] gh_u.value = (x) [L40] EXPR gh_u.parts.msw [L40] (hx) = gh_u.parts.msw [L42] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L57] double res = isfinite_double(x); [L60] COND TRUE res == 0.0 [L3] __assert_fail("0", "double_req_bl_1300.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 37 SDtfs, 0 SDslu, 10 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 303 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 03:01:37,692 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-11-28 03:01:37,844 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:01:37,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:01:37,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:01:37,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:01:37,851 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:01:37,851 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:01:37,853 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:01:37,854 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:01:37,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:01:37,856 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:01:37,857 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:01:37,862 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_685c64ef-7ec2-4c42-855a-8b25be76a72a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-28 03:01:37,927 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:01:37,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:01:37,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:01:37,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:01:37,936 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:01:37,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:01:37,937 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:01:37,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:01:37,938 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:01:37,938 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:01:37,940 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:01:37,940 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:01:37,940 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 03:01:37,941 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 03:01:37,941 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:01:37,941 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:01:37,941 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:01:37,942 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:01:37,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:01:37,942 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:01:37,943 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:01:37,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:01:37,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:01:37,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:01:37,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:01:37,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:01:37,945 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-28 03:01:37,945 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 03:01:37,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:01:37,945 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:01:37,946 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 03:01:37,946 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_685c64ef-7ec2-4c42-855a-8b25be76a72a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_685c64ef-7ec2-4c42-855a-8b25be76a72a/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6775086e1d92d324fce714cac739cb50ade22067 [2020-11-28 03:01:38,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:01:38,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:01:38,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:01:38,482 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:01:38,483 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:01:38,484 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_685c64ef-7ec2-4c42-855a-8b25be76a72a/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1300.c [2020-11-28 03:01:38,572 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_685c64ef-7ec2-4c42-855a-8b25be76a72a/bin/uautomizer/data/1471491de/9c00bff8a88741e3860f05fb81043ca3/FLAG7baf61f7b [2020-11-28 03:01:39,237 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:01:39,238 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_685c64ef-7ec2-4c42-855a-8b25be76a72a/sv-benchmarks/c/float-newlib/double_req_bl_1300.c [2020-11-28 03:01:39,247 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_685c64ef-7ec2-4c42-855a-8b25be76a72a/bin/uautomizer/data/1471491de/9c00bff8a88741e3860f05fb81043ca3/FLAG7baf61f7b [2020-11-28 03:01:39,585 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_685c64ef-7ec2-4c42-855a-8b25be76a72a/bin/uautomizer/data/1471491de/9c00bff8a88741e3860f05fb81043ca3 [2020-11-28 03:01:39,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:01:39,603 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:01:39,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:01:39,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:01:39,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:01:39,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:01:39" (1/1) ... [2020-11-28 03:01:39,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40ad88f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:39, skipping insertion in model container [2020-11-28 03:01:39,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:01:39" (1/1) ... [2020-11-28 03:01:39,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:01:39,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:01:39,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:01:39,854 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:01:39,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:01:39,910 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:01:39,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:39 WrapperNode [2020-11-28 03:01:39,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:01:39,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:01:39,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:01:39,915 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:01:39,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:39" (1/1) ... [2020-11-28 03:01:39,939 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:39" (1/1) ... [2020-11-28 03:01:39,965 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:01:39,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:01:39,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:01:39,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:01:39,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:39" (1/1) ... [2020-11-28 03:01:39,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:39" (1/1) ... [2020-11-28 03:01:39,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:39" (1/1) ... [2020-11-28 03:01:39,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:39" (1/1) ... [2020-11-28 03:01:39,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:39" (1/1) ... [2020-11-28 03:01:39,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:39" (1/1) ... [2020-11-28 03:01:40,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:39" (1/1) ... [2020-11-28 03:01:40,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:01:40,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:01:40,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:01:40,008 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:01:40,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_685c64ef-7ec2-4c42-855a-8b25be76a72a/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 03:01:40,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-28 03:01:40,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 03:01:40,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:01:40,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 03:01:40,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:01:40,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:01:40,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:01:40,722 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:01:40,722 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-28 03:01:40,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:01:40 BoogieIcfgContainer [2020-11-28 03:01:40,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:01:40,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:01:40,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:01:40,731 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:01:40,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:01:39" (1/3) ... [2020-11-28 03:01:40,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e83c5cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:01:40, skipping insertion in model container [2020-11-28 03:01:40,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:39" (2/3) ... [2020-11-28 03:01:40,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e83c5cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:01:40, skipping insertion in model container [2020-11-28 03:01:40,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:01:40" (3/3) ... [2020-11-28 03:01:40,736 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1300.c [2020-11-28 03:01:40,750 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:01:40,755 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:01:40,769 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:01:40,796 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:01:40,796 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:01:40,796 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:01:40,796 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:01:40,796 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:01:40,796 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:01:40,797 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:01:40,797 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:01:40,809 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-11-28 03:01:40,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:01:40,815 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:01:40,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:01:40,824 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:01:40,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:40,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1033094394, now seen corresponding path program 1 times [2020-11-28 03:01:40,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:01:40,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [748183339] [2020-11-28 03:01:40,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_685c64ef-7ec2-4c42-855a-8b25be76a72a/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 03:01:40,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:40,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 03:01:40,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:41,013 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 03:01:41,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:01:41,025 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 03:01:41,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [748183339] [2020-11-28 03:01:41,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:01:41,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 03:01:41,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677184971] [2020-11-28 03:01:41,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:01:41,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:01:41,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:01:41,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:01:41,059 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-11-28 03:01:41,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:01:41,088 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2020-11-28 03:01:41,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:01:41,090 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-11-28 03:01:41,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:01:41,112 INFO L225 Difference]: With dead ends: 39 [2020-11-28 03:01:41,112 INFO L226 Difference]: Without dead ends: 16 [2020-11-28 03:01:41,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 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 03:01:41,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-28 03:01:41,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-28 03:01:41,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 03:01:41,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-11-28 03:01:41,158 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2020-11-28 03:01:41,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:01:41,159 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-28 03:01:41,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:01:41,160 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-11-28 03:01:41,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:01:41,161 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:01:41,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:01:41,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 03:01:41,384 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:01:41,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:41,388 INFO L82 PathProgramCache]: Analyzing trace with hash 499625812, now seen corresponding path program 1 times [2020-11-28 03:01:41,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:01:41,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1764962611] [2020-11-28 03:01:41,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_685c64ef-7ec2-4c42-855a-8b25be76a72a/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 03:01:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:41,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:01:41,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:41,621 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 03:01:41,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:01:41,625 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 03:01:41,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1764962611] [2020-11-28 03:01:41,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:01:41,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-28 03:01:41,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651545000] [2020-11-28 03:01:41,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:01:41,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:01:41,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:01:41,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:01:41,636 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 3 states. [2020-11-28 03:01:41,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:01:41,702 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2020-11-28 03:01:41,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:01:41,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-11-28 03:01:41,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:01:41,706 INFO L225 Difference]: With dead ends: 24 [2020-11-28 03:01:41,706 INFO L226 Difference]: Without dead ends: 16 [2020-11-28 03:01:41,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:01:41,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-28 03:01:41,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-28 03:01:41,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 03:01:41,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-11-28 03:01:41,714 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 14 [2020-11-28 03:01:41,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:01:41,714 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-11-28 03:01:41,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:01:41,715 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-11-28 03:01:41,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:01:41,719 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:01:41,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:01:41,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 03:01:41,921 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:01:41,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:41,922 INFO L82 PathProgramCache]: Analyzing trace with hash 2210040, now seen corresponding path program 1 times [2020-11-28 03:01:41,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:01:41,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [520297572] [2020-11-28 03:01:41,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_685c64ef-7ec2-4c42-855a-8b25be76a72a/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 03:01:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:42,141 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:42,277 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:42,360 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-28 03:01:42,360 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:01:42,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 03:01:42,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:01:42 BoogieIcfgContainer [2020-11-28 03:01:42,596 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:01:42,596 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:01:42,597 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:01:42,597 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:01:42,597 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:01:40" (3/4) ... [2020-11-28 03:01:42,600 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:01:42,658 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_685c64ef-7ec2-4c42-855a-8b25be76a72a/bin/uautomizer/witness.graphml [2020-11-28 03:01:42,658 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:01:42,661 INFO L168 Benchmark]: Toolchain (without parser) took 3056.29 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 30.0 MB in the beginning and 43.8 MB in the end (delta: -13.8 MB). Peak memory consumption was 1.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:42,662 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 52.4 MB. Free memory was 34.4 MB in the beginning and 34.3 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:01:42,663 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.37 ms. Allocated memory is still 52.4 MB. Free memory was 29.8 MB in the beginning and 30.8 MB in the end (delta: -1.0 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:42,663 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.90 ms. Allocated memory is still 52.4 MB. Free memory was 30.8 MB in the beginning and 29.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:42,664 INFO L168 Benchmark]: Boogie Preprocessor took 40.10 ms. Allocated memory is still 52.4 MB. Free memory was 29.2 MB in the beginning and 27.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:01:42,665 INFO L168 Benchmark]: RCFGBuilder took 716.81 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 27.7 MB in the beginning and 37.4 MB in the end (delta: -9.8 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:42,665 INFO L168 Benchmark]: TraceAbstraction took 1869.26 ms. Allocated memory is still 67.1 MB. Free memory was 36.9 MB in the beginning and 46.2 MB in the end (delta: -9.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:42,666 INFO L168 Benchmark]: Witness Printer took 62.20 ms. Allocated memory is still 67.1 MB. Free memory was 45.7 MB in the beginning and 43.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:42,670 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 52.4 MB. Free memory was 34.4 MB in the beginning and 34.3 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 303.37 ms. Allocated memory is still 52.4 MB. Free memory was 29.8 MB in the beginning and 30.8 MB in the end (delta: -1.0 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.90 ms. Allocated memory is still 52.4 MB. Free memory was 30.8 MB in the beginning and 29.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.10 ms. Allocated memory is still 52.4 MB. Free memory was 29.2 MB in the beginning and 27.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 716.81 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 27.7 MB in the beginning and 37.4 MB in the end (delta: -9.8 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1869.26 ms. Allocated memory is still 67.1 MB. Free memory was 36.9 MB in the beginning and 46.2 MB in the end (delta: -9.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. * Witness Printer took 62.20 ms. Allocated memory is still 67.1 MB. Free memory was 45.7 MB in the beginning and 43.8 MB in the end (delta: 2.0 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: [L52] double x = __VERIFIER_nondet_double(); [L19] __int32_t hx, lx; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (hx) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lx) = ew_u.parts.lsw [L26] hx &= 0x7fffffff [L27] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L28] hx = 0x7ff00000 - hx [L29] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L55] !isinf_double(x) && !isnan_double(x) [L33] return x != x; [L55] !isinf_double(x) && !isnan_double(x) [L55] COND TRUE !isinf_double(x) && !isnan_double(x) [L36] __int32_t hx; [L38] ieee_double_shape_type gh_u; [L39] gh_u.value = (x) [L40] EXPR gh_u.parts.msw [L40] (hx) = gh_u.parts.msw [L42] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L57] double res = isfinite_double(x); [L60] COND TRUE res == 0.0 [L3] __assert_fail("0", "double_req_bl_1300.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 37 SDtfs, 0 SDslu, 10 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 606 SizeOfPredicates, 0 NumberOfNonLiveVariables, 101 ConjunctsInSsa, 3 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...