./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1121a_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_933a89bb-d661-446c-a81c-b1834b10c9f0/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_933a89bb-d661-446c-a81c-b1834b10c9f0/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_933a89bb-d661-446c-a81c-b1834b10c9f0/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_933a89bb-d661-446c-a81c-b1834b10c9f0/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1121a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_933a89bb-d661-446c-a81c-b1834b10c9f0/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_933a89bb-d661-446c-a81c-b1834b10c9f0/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2718f642e307f3f62e4f4b06b51ef37595256727 ............................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_933a89bb-d661-446c-a81c-b1834b10c9f0/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_933a89bb-d661-446c-a81c-b1834b10c9f0/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_933a89bb-d661-446c-a81c-b1834b10c9f0/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_933a89bb-d661-446c-a81c-b1834b10c9f0/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1121a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_933a89bb-d661-446c-a81c-b1834b10c9f0/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_933a89bb-d661-446c-a81c-b1834b10c9f0/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2718f642e307f3f62e4f4b06b51ef37595256727 ................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 10:56:21,770 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 10:56:21,771 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 10:56:21,777 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 10:56:21,778 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 10:56:21,778 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 10:56:21,779 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 10:56:21,780 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 10:56:21,781 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 10:56:21,782 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 10:56:21,783 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 10:56:21,783 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 10:56:21,784 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 10:56:21,784 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 10:56:21,785 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 10:56:21,785 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 10:56:21,786 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 10:56:21,787 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 10:56:21,788 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 10:56:21,790 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 10:56:21,790 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 10:56:21,791 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 10:56:21,793 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 10:56:21,793 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 10:56:21,793 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 10:56:21,794 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 10:56:21,795 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 10:56:21,795 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 10:56:21,796 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 10:56:21,797 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 10:56:21,797 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 10:56:21,797 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 10:56:21,797 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 10:56:21,798 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 10:56:21,798 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 10:56:21,799 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 10:56:21,799 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_933a89bb-d661-446c-a81c-b1834b10c9f0/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-18 10:56:21,807 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 10:56:21,807 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 10:56:21,807 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 10:56:21,808 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 10:56:21,808 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 10:56:21,808 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 10:56:21,808 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 10:56:21,808 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 10:56:21,809 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 10:56:21,809 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 10:56:21,809 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 10:56:21,809 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 10:56:21,809 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 10:56:21,809 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 10:56:21,809 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 10:56:21,809 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 10:56:21,810 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 10:56:21,810 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 10:56:21,810 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 10:56:21,810 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 10:56:21,810 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 10:56:21,810 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 10:56:21,810 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 10:56:21,811 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 10:56:21,811 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 10:56:21,811 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 10:56:21,811 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 10:56:21,811 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 10:56:21,811 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 10:56:21,811 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 10:56:21,811 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_933a89bb-d661-446c-a81c-b1834b10c9f0/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2718f642e307f3f62e4f4b06b51ef37595256727 [2018-11-18 10:56:21,835 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 10:56:21,844 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 10:56:21,846 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 10:56:21,847 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 10:56:21,848 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 10:56:21,848 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_933a89bb-d661-446c-a81c-b1834b10c9f0/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1121a_true-unreach-call.c [2018-11-18 10:56:21,892 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_933a89bb-d661-446c-a81c-b1834b10c9f0/bin-2019/uautomizer/data/1712993eb/d4800e4e749c4eabb8db1642e4b32d9d/FLAG82988028c [2018-11-18 10:56:22,297 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 10:56:22,297 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_933a89bb-d661-446c-a81c-b1834b10c9f0/sv-benchmarks/c/float-newlib/double_req_bl_1121a_true-unreach-call.c [2018-11-18 10:56:22,301 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_933a89bb-d661-446c-a81c-b1834b10c9f0/bin-2019/uautomizer/data/1712993eb/d4800e4e749c4eabb8db1642e4b32d9d/FLAG82988028c [2018-11-18 10:56:22,314 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_933a89bb-d661-446c-a81c-b1834b10c9f0/bin-2019/uautomizer/data/1712993eb/d4800e4e749c4eabb8db1642e4b32d9d [2018-11-18 10:56:22,316 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 10:56:22,318 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 10:56:22,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 10:56:22,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 10:56:22,322 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 10:56:22,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:56:22" (1/1) ... [2018-11-18 10:56:22,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44084d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:56:22, skipping insertion in model container [2018-11-18 10:56:22,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:56:22" (1/1) ... [2018-11-18 10:56:22,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 10:56:22,349 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 10:56:22,490 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:56:22,494 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 10:56:22,520 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:56:22,573 INFO L195 MainTranslator]: Completed translation [2018-11-18 10:56:22,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:56:22 WrapperNode [2018-11-18 10:56:22,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 10:56:22,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 10:56:22,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 10:56:22,574 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 10:56:22,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:56:22" (1/1) ... [2018-11-18 10:56:22,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:56:22" (1/1) ... [2018-11-18 10:56:22,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:56:22" (1/1) ... [2018-11-18 10:56:22,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:56:22" (1/1) ... [2018-11-18 10:56:22,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:56:22" (1/1) ... [2018-11-18 10:56:22,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:56:22" (1/1) ... [2018-11-18 10:56:22,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:56:22" (1/1) ... [2018-11-18 10:56:22,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 10:56:22,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 10:56:22,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 10:56:22,619 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 10:56:22,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:56:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_933a89bb-d661-446c-a81c-b1834b10c9f0/bin-2019/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 [2018-11-18 10:56:22,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 10:56:22,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 10:56:22,654 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-11-18 10:56:22,654 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2018-11-18 10:56:22,654 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 10:56:22,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 10:56:22,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-11-18 10:56:22,654 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-11-18 10:56:22,654 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2018-11-18 10:56:22,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 10:56:22,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-18 10:56:22,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 10:56:22,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 10:56:22,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-18 10:56:22,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 10:56:22,655 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 10:56:22,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 10:56:22,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-11-18 10:56:22,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 10:56:22,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 10:56:22,974 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 10:56:22,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:56:22 BoogieIcfgContainer [2018-11-18 10:56:22,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 10:56:22,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 10:56:22,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 10:56:22,977 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 10:56:22,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:56:22" (1/3) ... [2018-11-18 10:56:22,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e54a84d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:56:22, skipping insertion in model container [2018-11-18 10:56:22,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:56:22" (2/3) ... [2018-11-18 10:56:22,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e54a84d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:56:22, skipping insertion in model container [2018-11-18 10:56:22,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:56:22" (3/3) ... [2018-11-18 10:56:22,979 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1121a_true-unreach-call.c [2018-11-18 10:56:22,985 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 10:56:22,991 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 10:56:23,004 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 10:56:23,030 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 10:56:23,031 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 10:56:23,031 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 10:56:23,031 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 10:56:23,031 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 10:56:23,031 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 10:56:23,032 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 10:56:23,032 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 10:56:23,032 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 10:56:23,046 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2018-11-18 10:56:23,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 10:56:23,050 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:56:23,051 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:56:23,052 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:56:23,056 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:56:23,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1881137816, now seen corresponding path program 1 times [2018-11-18 10:56:23,057 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:56:23,057 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:56:23,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:56:23,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:56:23,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:56:23,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:56:23,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:56:23,154 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:56:23,155 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 10:56:23,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 10:56:23,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 10:56:23,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 10:56:23,168 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 2 states. [2018-11-18 10:56:23,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:56:23,183 INFO L93 Difference]: Finished difference Result 140 states and 222 transitions. [2018-11-18 10:56:23,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 10:56:23,184 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-11-18 10:56:23,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:56:23,191 INFO L225 Difference]: With dead ends: 140 [2018-11-18 10:56:23,192 INFO L226 Difference]: Without dead ends: 70 [2018-11-18 10:56:23,194 INFO L604 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 [2018-11-18 10:56:23,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-11-18 10:56:23,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-11-18 10:56:23,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-11-18 10:56:23,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 96 transitions. [2018-11-18 10:56:23,219 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 96 transitions. Word has length 22 [2018-11-18 10:56:23,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:56:23,220 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 96 transitions. [2018-11-18 10:56:23,220 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 10:56:23,220 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 96 transitions. [2018-11-18 10:56:23,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 10:56:23,221 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:56:23,221 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:56:23,221 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:56:23,221 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:56:23,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1206285604, now seen corresponding path program 1 times [2018-11-18 10:56:23,222 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:56:23,222 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:56:23,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:56:23,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:56:23,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:56:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:56:23,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:56:23,323 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 10:56:23,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 10:56:23 BoogieIcfgContainer [2018-11-18 10:56:23,346 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 10:56:23,347 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 10:56:23,347 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 10:56:23,347 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 10:56:23,347 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:56:22" (3/4) ... [2018-11-18 10:56:23,350 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 10:56:23,350 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 10:56:23,350 INFO L168 Benchmark]: Toolchain (without parser) took 1033.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 958.2 MB in the beginning and 1.1 GB in the end (delta: -107.0 MB). Peak memory consumption was 35.6 MB. Max. memory is 11.5 GB. [2018-11-18 10:56:23,351 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:56:23,352 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 958.2 MB in the beginning and 1.1 GB in the end (delta: -184.2 MB). Peak memory consumption was 31.3 MB. Max. memory is 11.5 GB. [2018-11-18 10:56:23,352 INFO L168 Benchmark]: Boogie Preprocessor took 44.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 10:56:23,352 INFO L168 Benchmark]: RCFGBuilder took 356.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.5 MB). Peak memory consumption was 38.5 MB. Max. memory is 11.5 GB. [2018-11-18 10:56:23,353 INFO L168 Benchmark]: TraceAbstraction took 371.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 11.5 GB. [2018-11-18 10:56:23,353 INFO L168 Benchmark]: Witness Printer took 3.25 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:56:23,355 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 255.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 958.2 MB in the beginning and 1.1 GB in the end (delta: -184.2 MB). Peak memory consumption was 31.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 44.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 356.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.5 MB). Peak memory consumption was 38.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 371.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 11.5 GB. * Witness Printer took 3.25 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 175]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of someBinaryDOUBLEComparisonOperation at line 16, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=6442450959, \old(Zero_fmod)=6442450957, \old(Zero_fmod)=6442450952, one_fmod=1, Zero_fmod={6442450956:0}] [L169] double x = __VERIFIER_nondet_double(); [L170] double y = 0.0; VAL [one_fmod=1, x=6442450947, y=0, Zero_fmod={6442450956:0}] [L171] CALL, EXPR fmod_double(x, y) VAL [\old(x)=6442450947, \old(y)=0, one_fmod=1, Zero_fmod={6442450956:0}] [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; VAL [\old(x)=6442450947, \old(y)=0, one_fmod=1, x=6442450947, y=0, Zero_fmod={6442450956:0}] [L28] FCALL ieee_double_shape_type ew_u; [L29] FCALL ew_u.value = (x) [L30] EXPR, FCALL ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR, FCALL ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L32] COND FALSE !(0) VAL [\old(x)=6442450947, \old(y)=0, hx=-2147483648, lx=6442450955, one_fmod=1, x=6442450947, y=0, Zero_fmod={6442450956:0}] [L34] FCALL ieee_double_shape_type ew_u; [L35] FCALL ew_u.value = (y) [L36] EXPR, FCALL ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR, FCALL ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L38] COND FALSE !(0) VAL [\old(x)=6442450947, \old(y)=0, hx=-2147483648, hy=2147483646, lx=6442450955, ly=6442450958, one_fmod=1, x=6442450947, y=0, Zero_fmod={6442450956:0}] [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff VAL [\old(x)=6442450947, \old(y)=0, lx=6442450955, ly=6442450958, one_fmod=1, sx=-1, x=6442450947, y=0, Zero_fmod={6442450956:0}] [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] RET return (x * y) / (x * y); VAL [\old(x)=6442450947, \old(y)=0, hx=2146435072, lx=6442450955, ly=6442450958, one_fmod=1, sx=-1, x=6442450947, y=0, Zero_fmod={6442450956:0}] [L171] EXPR fmod_double(x, y) VAL [fmod_double(x, y)=6442450949, one_fmod=1, x=6442450947, y=0, Zero_fmod={6442450956:0}] [L171] double res = fmod_double(x, y); [L174] CALL, EXPR isnan_double(res) VAL [\old(x)=6442450949, one_fmod=1, Zero_fmod={6442450956:0}] [L16] RET return x != x; VAL [\old(x)=6442450949, \result=0, one_fmod=1, x=6442450949, Zero_fmod={6442450956:0}] [L174] EXPR isnan_double(res) VAL [isnan_double(res)=0, one_fmod=1, res=6442450949, x=6442450947, y=0, Zero_fmod={6442450956:0}] [L174] COND TRUE !isnan_double(res) [L175] __VERIFIER_error() VAL [one_fmod=1, res=6442450949, x=6442450947, y=0, Zero_fmod={6442450956:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 74 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 100 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=74occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 441 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-5842f4b [2018-11-18 10:56:24,800 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 10:56:24,801 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 10:56:24,810 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 10:56:24,811 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 10:56:24,811 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 10:56:24,812 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 10:56:24,813 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 10:56:24,815 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 10:56:24,815 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 10:56:24,816 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 10:56:24,816 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 10:56:24,817 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 10:56:24,817 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 10:56:24,818 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 10:56:24,819 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 10:56:24,819 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 10:56:24,820 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 10:56:24,822 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 10:56:24,823 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 10:56:24,824 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 10:56:24,824 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 10:56:24,826 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 10:56:24,826 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 10:56:24,826 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 10:56:24,827 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 10:56:24,828 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 10:56:24,828 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 10:56:24,829 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 10:56:24,830 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 10:56:24,830 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 10:56:24,830 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 10:56:24,830 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 10:56:24,830 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 10:56:24,831 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 10:56:24,832 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 10:56:24,832 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_933a89bb-d661-446c-a81c-b1834b10c9f0/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-18 10:56:24,842 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 10:56:24,842 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 10:56:24,843 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 10:56:24,843 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 10:56:24,843 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 10:56:24,843 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 10:56:24,844 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 10:56:24,844 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 10:56:24,844 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 10:56:24,844 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 10:56:24,844 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 10:56:24,844 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 10:56:24,844 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 10:56:24,845 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 10:56:24,845 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 10:56:24,845 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 10:56:24,845 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 10:56:24,845 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 10:56:24,845 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 10:56:24,845 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 10:56:24,846 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 10:56:24,846 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 10:56:24,846 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 10:56:24,846 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 10:56:24,846 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 10:56:24,846 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 10:56:24,846 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 10:56:24,847 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 10:56:24,847 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-18 10:56:24,847 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 10:56:24,847 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 10:56:24,847 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 10:56:24,847 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_933a89bb-d661-446c-a81c-b1834b10c9f0/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2718f642e307f3f62e4f4b06b51ef37595256727 [2018-11-18 10:56:24,877 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 10:56:24,885 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 10:56:24,887 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 10:56:24,888 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 10:56:24,888 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 10:56:24,889 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_933a89bb-d661-446c-a81c-b1834b10c9f0/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1121a_true-unreach-call.c [2018-11-18 10:56:24,929 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_933a89bb-d661-446c-a81c-b1834b10c9f0/bin-2019/uautomizer/data/c2e6481e8/15e7fe22a52d45049db2cd719b205630/FLAG634cf05ff [2018-11-18 10:56:25,267 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 10:56:25,268 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_933a89bb-d661-446c-a81c-b1834b10c9f0/sv-benchmarks/c/float-newlib/double_req_bl_1121a_true-unreach-call.c [2018-11-18 10:56:25,273 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_933a89bb-d661-446c-a81c-b1834b10c9f0/bin-2019/uautomizer/data/c2e6481e8/15e7fe22a52d45049db2cd719b205630/FLAG634cf05ff [2018-11-18 10:56:25,688 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_933a89bb-d661-446c-a81c-b1834b10c9f0/bin-2019/uautomizer/data/c2e6481e8/15e7fe22a52d45049db2cd719b205630 [2018-11-18 10:56:25,690 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 10:56:25,691 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 10:56:25,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 10:56:25,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 10:56:25,695 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 10:56:25,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:56:25" (1/1) ... [2018-11-18 10:56:25,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26282391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:56:25, skipping insertion in model container [2018-11-18 10:56:25,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:56:25" (1/1) ... [2018-11-18 10:56:25,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 10:56:25,722 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 10:56:25,877 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:56:25,884 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 10:56:25,920 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:56:25,939 INFO L195 MainTranslator]: Completed translation [2018-11-18 10:56:25,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:56:25 WrapperNode [2018-11-18 10:56:25,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 10:56:25,940 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 10:56:25,940 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 10:56:25,940 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 10:56:25,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:56:25" (1/1) ... [2018-11-18 10:56:25,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:56:25" (1/1) ... [2018-11-18 10:56:25,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:56:25" (1/1) ... [2018-11-18 10:56:25,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:56:25" (1/1) ... [2018-11-18 10:56:25,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:56:25" (1/1) ... [2018-11-18 10:56:26,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:56:25" (1/1) ... [2018-11-18 10:56:26,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:56:25" (1/1) ... [2018-11-18 10:56:26,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 10:56:26,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 10:56:26,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 10:56:26,037 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 10:56:26,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:56:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_933a89bb-d661-446c-a81c-b1834b10c9f0/bin-2019/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 [2018-11-18 10:56:26,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 10:56:26,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 10:56:26,076 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-11-18 10:56:26,076 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2018-11-18 10:56:26,076 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 10:56:26,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 10:56:26,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-11-18 10:56:26,076 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-11-18 10:56:26,076 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2018-11-18 10:56:26,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 10:56:26,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-11-18 10:56:26,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 10:56:26,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 10:56:26,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-11-18 10:56:26,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-18 10:56:26,076 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 10:56:26,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 10:56:26,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2018-11-18 10:56:26,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 10:56:26,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-11-18 10:56:26,206 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 10:56:26,487 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 10:56:26,519 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 10:56:28,974 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 10:56:28,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:56:28 BoogieIcfgContainer [2018-11-18 10:56:28,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 10:56:28,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 10:56:28,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 10:56:28,978 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 10:56:28,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:56:25" (1/3) ... [2018-11-18 10:56:28,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@232c326c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:56:28, skipping insertion in model container [2018-11-18 10:56:28,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:56:25" (2/3) ... [2018-11-18 10:56:28,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@232c326c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:56:28, skipping insertion in model container [2018-11-18 10:56:28,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:56:28" (3/3) ... [2018-11-18 10:56:28,981 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1121a_true-unreach-call.c [2018-11-18 10:56:28,989 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 10:56:28,994 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 10:56:29,003 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 10:56:29,024 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 10:56:29,025 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 10:56:29,025 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 10:56:29,025 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 10:56:29,025 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 10:56:29,025 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 10:56:29,025 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 10:56:29,026 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 10:56:29,026 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 10:56:29,036 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2018-11-18 10:56:29,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 10:56:29,040 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:56:29,041 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:56:29,042 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:56:29,045 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:56:29,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1124095359, now seen corresponding path program 1 times [2018-11-18 10:56:29,048 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 10:56:29,049 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_933a89bb-d661-446c-a81c-b1834b10c9f0/bin-2019/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 [2018-11-18 10:56:29,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:56:29,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:56:29,823 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:56:29,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:56:29,834 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 10:56:29,852 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:56:29,852 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 10:56:29,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 10:56:29,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 10:56:29,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 10:56:29,865 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 2 states. [2018-11-18 10:56:29,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:56:29,876 INFO L93 Difference]: Finished difference Result 73 states and 114 transitions. [2018-11-18 10:56:29,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 10:56:29,877 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-18 10:56:29,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:56:29,883 INFO L225 Difference]: With dead ends: 73 [2018-11-18 10:56:29,883 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 10:56:29,886 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 10:56:29,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 10:56:29,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 10:56:29,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 10:56:29,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 10:56:29,904 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-11-18 10:56:29,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:56:29,904 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 10:56:29,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 10:56:29,905 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 10:56:29,905 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 10:56:29,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 10:56:29,952 INFO L428 ceAbstractionStarter]: At program point isnan_doubleENTRY(line 16) the Hoare annotation is: true [2018-11-18 10:56:29,953 INFO L425 ceAbstractionStarter]: For program point isnan_doubleEXIT(line 16) no Hoare annotation was computed. [2018-11-18 10:56:29,953 INFO L425 ceAbstractionStarter]: For program point isnan_doubleFINAL(line 16) no Hoare annotation was computed. [2018-11-18 10:56:29,953 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 10:56:29,953 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 10:56:29,953 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 10:56:29,953 INFO L425 ceAbstractionStarter]: For program point L101-4(lines 101 115) no Hoare annotation was computed. [2018-11-18 10:56:29,953 INFO L425 ceAbstractionStarter]: For program point L118(lines 118 119) no Hoare annotation was computed. [2018-11-18 10:56:29,953 INFO L425 ceAbstractionStarter]: For program point L118-2(lines 23 161) no Hoare annotation was computed. [2018-11-18 10:56:29,953 INFO L425 ceAbstractionStarter]: For program point L69-1(lines 69 70) no Hoare annotation was computed. [2018-11-18 10:56:29,953 INFO L425 ceAbstractionStarter]: For program point L69-3(lines 69 70) no Hoare annotation was computed. [2018-11-18 10:56:29,954 INFO L428 ceAbstractionStarter]: At program point L69-4(lines 69 70) the Hoare annotation is: true [2018-11-18 10:56:29,954 INFO L425 ceAbstractionStarter]: For program point L152(lines 152 157) no Hoare annotation was computed. [2018-11-18 10:56:29,954 INFO L425 ceAbstractionStarter]: For program point L152-2(lines 140 159) no Hoare annotation was computed. [2018-11-18 10:56:29,954 INFO L425 ceAbstractionStarter]: For program point L53(lines 23 161) no Hoare annotation was computed. [2018-11-18 10:56:29,954 INFO L425 ceAbstractionStarter]: For program point L152-3(lines 152 157) no Hoare annotation was computed. [2018-11-18 10:56:29,954 INFO L425 ceAbstractionStarter]: For program point fmod_doubleFINAL(lines 23 161) no Hoare annotation was computed. [2018-11-18 10:56:29,954 INFO L425 ceAbstractionStarter]: For program point L120-1(lines 23 161) no Hoare annotation was computed. [2018-11-18 10:56:29,954 INFO L425 ceAbstractionStarter]: For program point L54(lines 54 60) no Hoare annotation was computed. [2018-11-18 10:56:29,954 INFO L425 ceAbstractionStarter]: For program point L104(lines 104 105) no Hoare annotation was computed. [2018-11-18 10:56:29,954 INFO L425 ceAbstractionStarter]: For program point L104-2(lines 101 115) no Hoare annotation was computed. [2018-11-18 10:56:29,954 INFO L425 ceAbstractionStarter]: For program point L55-1(lines 55 56) no Hoare annotation was computed. [2018-11-18 10:56:29,955 INFO L425 ceAbstractionStarter]: For program point L55-3(lines 55 56) no Hoare annotation was computed. [2018-11-18 10:56:29,955 INFO L428 ceAbstractionStarter]: At program point L55-4(lines 55 56) the Hoare annotation is: true [2018-11-18 10:56:29,955 INFO L428 ceAbstractionStarter]: At program point L106-1(lines 101 115) the Hoare annotation is: true [2018-11-18 10:56:29,955 INFO L425 ceAbstractionStarter]: For program point L91(lines 91 97) no Hoare annotation was computed. [2018-11-18 10:56:29,955 INFO L425 ceAbstractionStarter]: For program point L58-1(lines 58 59) no Hoare annotation was computed. [2018-11-18 10:56:29,955 INFO L425 ceAbstractionStarter]: For program point L91-2(lines 87 98) no Hoare annotation was computed. [2018-11-18 10:56:29,955 INFO L425 ceAbstractionStarter]: For program point L58-3(lines 58 59) no Hoare annotation was computed. [2018-11-18 10:56:29,955 INFO L428 ceAbstractionStarter]: At program point fmod_doubleENTRY(lines 23 161) the Hoare annotation is: true [2018-11-18 10:56:29,955 INFO L428 ceAbstractionStarter]: At program point L58-4(lines 58 59) the Hoare annotation is: true [2018-11-18 10:56:29,955 INFO L425 ceAbstractionStarter]: For program point L142(lines 142 151) no Hoare annotation was computed. [2018-11-18 10:56:29,955 INFO L425 ceAbstractionStarter]: For program point L43(lines 43 45) no Hoare annotation was computed. [2018-11-18 10:56:29,956 INFO L425 ceAbstractionStarter]: For program point L27-1(lines 27 32) no Hoare annotation was computed. [2018-11-18 10:56:29,956 INFO L428 ceAbstractionStarter]: At program point L27-3(lines 27 32) the Hoare annotation is: true [2018-11-18 10:56:29,956 INFO L425 ceAbstractionStarter]: For program point L110(lines 110 111) no Hoare annotation was computed. [2018-11-18 10:56:29,956 INFO L425 ceAbstractionStarter]: For program point L127-1(lines 127 131) no Hoare annotation was computed. [2018-11-18 10:56:29,956 INFO L428 ceAbstractionStarter]: At program point L127-3(lines 127 131) the Hoare annotation is: true [2018-11-18 10:56:29,956 INFO L425 ceAbstractionStarter]: For program point L127-4(lines 23 161) no Hoare annotation was computed. [2018-11-18 10:56:29,956 INFO L425 ceAbstractionStarter]: For program point L145(lines 145 151) no Hoare annotation was computed. [2018-11-18 10:56:29,956 INFO L425 ceAbstractionStarter]: For program point L79(lines 79 85) no Hoare annotation was computed. [2018-11-18 10:56:29,956 INFO L425 ceAbstractionStarter]: For program point L46(lines 46 51) no Hoare annotation was computed. [2018-11-18 10:56:29,956 INFO L425 ceAbstractionStarter]: For program point L79-2(lines 23 161) no Hoare annotation was computed. [2018-11-18 10:56:29,956 INFO L425 ceAbstractionStarter]: For program point L46-2(lines 23 161) no Hoare annotation was computed. [2018-11-18 10:56:29,957 INFO L425 ceAbstractionStarter]: For program point L47(lines 47 48) no Hoare annotation was computed. [2018-11-18 10:56:29,957 INFO L425 ceAbstractionStarter]: For program point L64(lines 23 161) no Hoare annotation was computed. [2018-11-18 10:56:29,957 INFO L425 ceAbstractionStarter]: For program point L65(lines 65 71) no Hoare annotation was computed. [2018-11-18 10:56:29,957 INFO L425 ceAbstractionStarter]: For program point fmod_doubleEXIT(lines 23 161) no Hoare annotation was computed. [2018-11-18 10:56:29,957 INFO L425 ceAbstractionStarter]: For program point L49(lines 49 50) no Hoare annotation was computed. [2018-11-18 10:56:29,957 INFO L425 ceAbstractionStarter]: For program point L132(lines 132 159) no Hoare annotation was computed. [2018-11-18 10:56:29,957 INFO L425 ceAbstractionStarter]: For program point L33(lines 33 38) no Hoare annotation was computed. [2018-11-18 10:56:29,957 INFO L425 ceAbstractionStarter]: For program point L66-1(lines 66 67) no Hoare annotation was computed. [2018-11-18 10:56:29,957 INFO L425 ceAbstractionStarter]: For program point L33-2(lines 23 161) no Hoare annotation was computed. [2018-11-18 10:56:29,957 INFO L425 ceAbstractionStarter]: For program point L66-3(lines 66 67) no Hoare annotation was computed. [2018-11-18 10:56:29,957 INFO L425 ceAbstractionStarter]: For program point L33-3(lines 33 38) no Hoare annotation was computed. [2018-11-18 10:56:29,957 INFO L428 ceAbstractionStarter]: At program point L66-4(lines 66 67) the Hoare annotation is: true [2018-11-18 10:56:29,958 INFO L425 ceAbstractionStarter]: For program point L134-1(lines 134 139) no Hoare annotation was computed. [2018-11-18 10:56:29,958 INFO L425 ceAbstractionStarter]: For program point L101-1(lines 101 115) no Hoare annotation was computed. [2018-11-18 10:56:29,958 INFO L425 ceAbstractionStarter]: For program point L101-2(lines 101 115) no Hoare annotation was computed. [2018-11-18 10:56:29,958 INFO L428 ceAbstractionStarter]: At program point L134-3(lines 134 139) the Hoare annotation is: true [2018-11-18 10:56:29,958 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 10:56:29,958 INFO L421 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: false [2018-11-18 10:56:29,958 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 10:56:29,958 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 10:56:29,958 INFO L425 ceAbstractionStarter]: For program point L175(line 175) no Hoare annotation was computed. [2018-11-18 10:56:29,958 INFO L428 ceAbstractionStarter]: At program point L174(line 174) the Hoare annotation is: true [2018-11-18 10:56:29,959 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 163 180) the Hoare annotation is: true [2018-11-18 10:56:29,959 INFO L425 ceAbstractionStarter]: For program point L174-1(lines 174 177) no Hoare annotation was computed. [2018-11-18 10:56:29,959 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 163 180) no Hoare annotation was computed. [2018-11-18 10:56:29,959 INFO L428 ceAbstractionStarter]: At program point L171(line 171) the Hoare annotation is: true [2018-11-18 10:56:29,959 INFO L425 ceAbstractionStarter]: For program point L171-1(line 171) no Hoare annotation was computed. [2018-11-18 10:56:29,959 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 163 180) no Hoare annotation was computed. [2018-11-18 10:56:29,959 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 175) no Hoare annotation was computed. [2018-11-18 10:56:29,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 10:56:29 BoogieIcfgContainer [2018-11-18 10:56:29,964 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 10:56:29,964 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 10:56:29,964 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 10:56:29,964 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 10:56:29,964 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:56:28" (3/4) ... [2018-11-18 10:56:29,967 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 10:56:29,971 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_double [2018-11-18 10:56:29,971 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 10:56:29,971 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure fmod_double [2018-11-18 10:56:29,972 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 10:56:29,975 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 38 nodes and edges [2018-11-18 10:56:29,975 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2018-11-18 10:56:29,976 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-18 10:56:29,976 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-18 10:56:30,023 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_933a89bb-d661-446c-a81c-b1834b10c9f0/bin-2019/uautomizer/witness.graphml [2018-11-18 10:56:30,023 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 10:56:30,024 INFO L168 Benchmark]: Toolchain (without parser) took 4332.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 947.8 MB in the beginning and 1.0 GB in the end (delta: -86.8 MB). Peak memory consumption was 42.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:56:30,024 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:56:30,025 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.95 ms. Allocated memory is still 1.0 GB. Free memory was 947.8 MB in the beginning and 931.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 10:56:30,025 INFO L168 Benchmark]: Boogie Preprocessor took 96.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 931.7 MB in the beginning and 1.1 GB in the end (delta: -192.2 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. [2018-11-18 10:56:30,025 INFO L168 Benchmark]: RCFGBuilder took 2938.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.1 MB). Peak memory consumption was 44.1 MB. Max. memory is 11.5 GB. [2018-11-18 10:56:30,025 INFO L168 Benchmark]: TraceAbstraction took 988.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 38.6 MB). Peak memory consumption was 38.6 MB. Max. memory is 11.5 GB. [2018-11-18 10:56:30,025 INFO L168 Benchmark]: Witness Printer took 59.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2018-11-18 10:56:30,026 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 247.95 ms. Allocated memory is still 1.0 GB. Free memory was 947.8 MB in the beginning and 931.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 96.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 931.7 MB in the beginning and 1.1 GB in the end (delta: -192.2 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2938.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.1 MB). Peak memory consumption was 44.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 988.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 38.6 MB). Peak memory consumption was 38.6 MB. Max. memory is 11.5 GB. * Witness Printer took 59.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 175]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 127]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 69]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 134]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 66]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 101]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 73 locations, 1 error locations. SAFE Result, 0.9s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 16 LocationsWithAnnotation, 16 PreInvPairs, 16 NumberOfFragments, 16 HoareAnnotationTreeSize, 16 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 16 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 400 SizeOfPredicates, 0 NumberOfNonLiveVariables, 60 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...