./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0710_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_4ed71b71-6c49-4867-9982-99170febdc9f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_4ed71b71-6c49-4867-9982-99170febdc9f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_4ed71b71-6c49-4867-9982-99170febdc9f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_4ed71b71-6c49-4867-9982-99170febdc9f/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0710_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_4ed71b71-6c49-4867-9982-99170febdc9f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_4ed71b71-6c49-4867-9982-99170febdc9f/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 1ff4e8ff973f803d8fa94df33d1e2314e0626318 ........................................................................................................................................................................................................................................................................................................... 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_4ed71b71-6c49-4867-9982-99170febdc9f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_4ed71b71-6c49-4867-9982-99170febdc9f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_4ed71b71-6c49-4867-9982-99170febdc9f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_4ed71b71-6c49-4867-9982-99170febdc9f/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0710_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_4ed71b71-6c49-4867-9982-99170febdc9f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_4ed71b71-6c49-4867-9982-99170febdc9f/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 1ff4e8ff973f803d8fa94df33d1e2314e0626318 ............................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 13:08:19,421 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 13:08:19,423 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 13:08:19,431 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 13:08:19,431 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 13:08:19,432 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 13:08:19,433 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 13:08:19,434 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 13:08:19,435 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 13:08:19,436 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 13:08:19,436 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 13:08:19,437 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 13:08:19,437 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 13:08:19,438 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 13:08:19,439 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 13:08:19,439 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 13:08:19,440 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 13:08:19,441 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 13:08:19,442 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 13:08:19,443 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 13:08:19,444 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 13:08:19,445 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 13:08:19,446 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 13:08:19,446 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 13:08:19,447 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 13:08:19,447 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 13:08:19,448 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 13:08:19,448 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 13:08:19,449 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 13:08:19,450 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 13:08:19,450 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 13:08:19,450 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 13:08:19,450 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 13:08:19,450 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 13:08:19,451 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 13:08:19,452 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 13:08:19,452 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_4ed71b71-6c49-4867-9982-99170febdc9f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-18 13:08:19,461 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 13:08:19,461 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 13:08:19,462 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 13:08:19,462 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 13:08:19,463 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 13:08:19,463 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 13:08:19,463 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 13:08:19,463 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 13:08:19,463 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 13:08:19,463 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 13:08:19,463 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 13:08:19,464 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 13:08:19,464 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 13:08:19,464 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 13:08:19,464 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 13:08:19,464 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 13:08:19,464 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 13:08:19,464 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 13:08:19,464 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 13:08:19,465 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 13:08:19,465 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 13:08:19,465 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 13:08:19,465 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 13:08:19,465 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:08:19,465 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 13:08:19,465 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 13:08:19,466 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 13:08:19,466 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 13:08:19,466 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 13:08:19,466 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 13:08:19,466 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_4ed71b71-6c49-4867-9982-99170febdc9f/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 -> 1ff4e8ff973f803d8fa94df33d1e2314e0626318 [2018-11-18 13:08:19,489 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 13:08:19,499 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 13:08:19,501 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 13:08:19,502 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 13:08:19,503 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 13:08:19,503 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_4ed71b71-6c49-4867-9982-99170febdc9f/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_0710_true-unreach-call.c [2018-11-18 13:08:19,547 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4ed71b71-6c49-4867-9982-99170febdc9f/bin-2019/uautomizer/data/fac217722/c8b2d1743f424c8b95e488cf47e6884b/FLAGe2d28ab15 [2018-11-18 13:08:19,952 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 13:08:19,953 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_4ed71b71-6c49-4867-9982-99170febdc9f/sv-benchmarks/c/float-newlib/float_req_bl_0710_true-unreach-call.c [2018-11-18 13:08:19,957 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4ed71b71-6c49-4867-9982-99170febdc9f/bin-2019/uautomizer/data/fac217722/c8b2d1743f424c8b95e488cf47e6884b/FLAGe2d28ab15 [2018-11-18 13:08:19,969 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_4ed71b71-6c49-4867-9982-99170febdc9f/bin-2019/uautomizer/data/fac217722/c8b2d1743f424c8b95e488cf47e6884b [2018-11-18 13:08:19,971 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 13:08:19,972 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 13:08:19,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 13:08:19,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 13:08:19,974 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 13:08:19,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:08:19" (1/1) ... [2018-11-18 13:08:19,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73951530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:08:19, skipping insertion in model container [2018-11-18 13:08:19,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:08:19" (1/1) ... [2018-11-18 13:08:19,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 13:08:19,997 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 13:08:20,117 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:08:20,120 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 13:08:20,140 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:08:20,156 INFO L195 MainTranslator]: Completed translation [2018-11-18 13:08:20,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:08:20 WrapperNode [2018-11-18 13:08:20,156 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 13:08:20,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 13:08:20,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 13:08:20,157 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 13:08:20,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:08:20" (1/1) ... [2018-11-18 13:08:20,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:08:20" (1/1) ... [2018-11-18 13:08:20,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:08:20" (1/1) ... [2018-11-18 13:08:20,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:08:20" (1/1) ... [2018-11-18 13:08:20,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:08:20" (1/1) ... [2018-11-18 13:08:20,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:08:20" (1/1) ... [2018-11-18 13:08:20,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:08:20" (1/1) ... [2018-11-18 13:08:20,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 13:08:20,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 13:08:20,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 13:08:20,226 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 13:08:20,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:08:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4ed71b71-6c49-4867-9982-99170febdc9f/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 13:08:20,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 13:08:20,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 13:08:20,270 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-18 13:08:20,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2018-11-18 13:08:20,271 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 13:08:20,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 13:08:20,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-11-18 13:08:20,271 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-18 13:08:20,271 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2018-11-18 13:08:20,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 13:08:20,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-18 13:08:20,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 13:08:20,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 13:08:20,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 13:08:20,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-18 13:08:20,272 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 13:08:20,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 13:08:20,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 13:08:20,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-11-18 13:08:20,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 13:08:20,515 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 13:08:20,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:08:20 BoogieIcfgContainer [2018-11-18 13:08:20,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 13:08:20,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 13:08:20,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 13:08:20,517 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 13:08:20,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:08:19" (1/3) ... [2018-11-18 13:08:20,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370f088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:08:20, skipping insertion in model container [2018-11-18 13:08:20,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:08:20" (2/3) ... [2018-11-18 13:08:20,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370f088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:08:20, skipping insertion in model container [2018-11-18 13:08:20,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:08:20" (3/3) ... [2018-11-18 13:08:20,520 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0710_true-unreach-call.c [2018-11-18 13:08:20,525 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 13:08:20,530 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 13:08:20,539 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 13:08:20,559 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 13:08:20,560 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 13:08:20,560 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 13:08:20,560 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 13:08:20,560 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 13:08:20,560 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 13:08:20,560 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 13:08:20,560 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 13:08:20,560 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 13:08:20,573 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2018-11-18 13:08:20,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 13:08:20,577 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:08:20,578 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 13:08:20,579 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:08:20,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:08:20,583 INFO L82 PathProgramCache]: Analyzing trace with hash -476582804, now seen corresponding path program 1 times [2018-11-18 13:08:20,584 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:08:20,584 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:08:20,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:08:20,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:08:20,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:08:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:08:20,676 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 13:08:20,677 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:08:20,678 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 13:08:20,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 13:08:20,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 13:08:20,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 13:08:20,690 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2018-11-18 13:08:20,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:08:20,705 INFO L93 Difference]: Finished difference Result 91 states and 126 transitions. [2018-11-18 13:08:20,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 13:08:20,706 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-11-18 13:08:20,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:08:20,713 INFO L225 Difference]: With dead ends: 91 [2018-11-18 13:08:20,713 INFO L226 Difference]: Without dead ends: 45 [2018-11-18 13:08:20,716 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 13:08:20,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-11-18 13:08:20,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-11-18 13:08:20,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-18 13:08:20,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2018-11-18 13:08:20,739 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 22 [2018-11-18 13:08:20,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:08:20,739 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2018-11-18 13:08:20,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 13:08:20,740 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2018-11-18 13:08:20,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 13:08:20,741 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:08:20,741 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] [2018-11-18 13:08:20,741 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:08:20,741 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:08:20,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1910097230, now seen corresponding path program 1 times [2018-11-18 13:08:20,742 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:08:20,742 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:08:20,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:08:20,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:08:20,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:08:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:08:20,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:08:20,808 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 13:08:20,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 01:08:20 BoogieIcfgContainer [2018-11-18 13:08:20,824 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 13:08:20,825 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 13:08:20,825 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 13:08:20,825 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 13:08:20,825 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:08:20" (3/4) ... [2018-11-18 13:08:20,827 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 13:08:20,827 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 13:08:20,828 INFO L168 Benchmark]: Toolchain (without parser) took 856.76 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.9 MB). Free memory was 958.1 MB in the beginning and 1.0 GB in the end (delta: -76.9 MB). Peak memory consumption was 19.0 MB. Max. memory is 11.5 GB. [2018-11-18 13:08:20,829 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:08:20,829 INFO L168 Benchmark]: CACSL2BoogieTranslator took 184.16 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 944.4 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2018-11-18 13:08:20,830 INFO L168 Benchmark]: Boogie Preprocessor took 68.72 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.9 MB). Free memory was 944.4 MB in the beginning and 1.1 GB in the end (delta: -145.7 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. [2018-11-18 13:08:20,830 INFO L168 Benchmark]: RCFGBuilder took 289.52 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 11.5 GB. [2018-11-18 13:08:20,830 INFO L168 Benchmark]: TraceAbstraction took 308.70 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 31.6 MB). Peak memory consumption was 31.6 MB. Max. memory is 11.5 GB. [2018-11-18 13:08:20,831 INFO L168 Benchmark]: Witness Printer took 2.91 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:08:20,833 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 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 184.16 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 944.4 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 68.72 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.9 MB). Free memory was 944.4 MB in the beginning and 1.1 GB in the end (delta: -145.7 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 289.52 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 308.70 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 31.6 MB). Peak memory consumption was 31.6 MB. Max. memory is 11.5 GB. * Witness Printer took 2.91 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 98]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 13, overapproximation of bitwiseAnd at line 27, overapproximation of someBinaryArithmeticFLOAToperation at line 30. Possible FailurePath: [L15] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; VAL [\old(one_sqrt)=9, \old(tiny_sqrt)=7, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L91] float x = __VERIFIER_nondet_float(); [L92] COND TRUE x < -0.0f VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8] [L94] CALL, EXPR __ieee754_sqrtf(x) VAL [\old(x)=8, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L18] float z; [L19] __uint32_t r, hx; [L20] __int32_t ix, s, q, m, t, i; VAL [\old(x)=8, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8] [L23] FCALL ieee_float_shape_type gf_u; [L24] FCALL gf_u.value = (x) [L25] EXPR, FCALL gf_u.word [L25] (ix) = gf_u.word [L26] COND FALSE !(0) VAL [\old(x)=8, ix=3, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8] [L27] hx = ix & 0x7fffffff VAL [\old(x)=8, ix=3, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8] [L29] COND TRUE !((hx) < 0x7f800000L) [L30] RET return x * x + x; VAL [\old(x)=8, hx=2139095040, ix=3, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8] [L94] EXPR __ieee754_sqrtf(x) VAL [__ieee754_sqrtf(x)=6, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8] [L94] float res = __ieee754_sqrtf(x); [L97] CALL, EXPR isnan_float(res) VAL [\old(x)=6, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L13] RET return x != x; VAL [\old(x)=6, \result=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=6] [L97] EXPR isnan_float(res) VAL [isnan_float(res)=0, one_sqrt=1, res=6, tiny_sqrt=1/1000000000000000000000000000000, x=8] [L97] COND TRUE !isnan_float(res) [L98] __VERIFIER_error() VAL [one_sqrt=1, res=6, tiny_sqrt=1/1000000000000000000000000000000, x=8] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 50 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 61 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=50occurred 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, 45 NumberOfCodeBlocks, 45 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 13:08:22,292 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 13:08:22,293 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 13:08:22,301 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 13:08:22,301 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 13:08:22,302 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 13:08:22,302 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 13:08:22,304 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 13:08:22,305 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 13:08:22,305 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 13:08:22,306 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 13:08:22,306 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 13:08:22,307 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 13:08:22,308 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 13:08:22,308 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 13:08:22,309 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 13:08:22,310 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 13:08:22,311 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 13:08:22,312 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 13:08:22,313 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 13:08:22,314 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 13:08:22,315 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 13:08:22,316 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 13:08:22,317 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 13:08:22,317 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 13:08:22,317 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 13:08:22,318 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 13:08:22,319 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 13:08:22,319 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 13:08:22,320 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 13:08:22,320 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 13:08:22,321 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 13:08:22,321 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 13:08:22,321 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 13:08:22,322 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 13:08:22,322 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 13:08:22,322 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_4ed71b71-6c49-4867-9982-99170febdc9f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-18 13:08:22,332 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 13:08:22,333 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 13:08:22,333 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 13:08:22,333 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 13:08:22,334 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 13:08:22,334 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 13:08:22,334 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 13:08:22,334 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 13:08:22,335 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 13:08:22,335 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 13:08:22,335 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 13:08:22,335 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 13:08:22,335 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 13:08:22,335 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 13:08:22,335 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 13:08:22,335 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 13:08:22,336 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 13:08:22,336 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 13:08:22,336 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 13:08:22,336 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 13:08:22,336 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 13:08:22,336 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 13:08:22,336 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 13:08:22,337 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 13:08:22,337 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:08:22,337 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 13:08:22,337 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 13:08:22,337 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 13:08:22,337 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-18 13:08:22,337 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 13:08:22,337 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 13:08:22,338 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 13:08:22,338 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_4ed71b71-6c49-4867-9982-99170febdc9f/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 -> 1ff4e8ff973f803d8fa94df33d1e2314e0626318 [2018-11-18 13:08:22,369 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 13:08:22,378 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 13:08:22,381 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 13:08:22,382 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 13:08:22,382 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 13:08:22,383 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_4ed71b71-6c49-4867-9982-99170febdc9f/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_0710_true-unreach-call.c [2018-11-18 13:08:22,426 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4ed71b71-6c49-4867-9982-99170febdc9f/bin-2019/uautomizer/data/4216fc00e/a28b77140d1049afb14eac1e8c16f99c/FLAG63ec387d2 [2018-11-18 13:08:22,751 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 13:08:22,751 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_4ed71b71-6c49-4867-9982-99170febdc9f/sv-benchmarks/c/float-newlib/float_req_bl_0710_true-unreach-call.c [2018-11-18 13:08:22,757 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4ed71b71-6c49-4867-9982-99170febdc9f/bin-2019/uautomizer/data/4216fc00e/a28b77140d1049afb14eac1e8c16f99c/FLAG63ec387d2 [2018-11-18 13:08:23,182 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_4ed71b71-6c49-4867-9982-99170febdc9f/bin-2019/uautomizer/data/4216fc00e/a28b77140d1049afb14eac1e8c16f99c [2018-11-18 13:08:23,184 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 13:08:23,185 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 13:08:23,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 13:08:23,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 13:08:23,188 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 13:08:23,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:08:23" (1/1) ... [2018-11-18 13:08:23,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eb5b9f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:08:23, skipping insertion in model container [2018-11-18 13:08:23,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:08:23" (1/1) ... [2018-11-18 13:08:23,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 13:08:23,218 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 13:08:23,358 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:08:23,362 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 13:08:23,384 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:08:23,401 INFO L195 MainTranslator]: Completed translation [2018-11-18 13:08:23,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:08:23 WrapperNode [2018-11-18 13:08:23,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 13:08:23,402 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 13:08:23,402 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 13:08:23,402 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 13:08:23,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:08:23" (1/1) ... [2018-11-18 13:08:23,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:08:23" (1/1) ... [2018-11-18 13:08:23,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:08:23" (1/1) ... [2018-11-18 13:08:23,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:08:23" (1/1) ... [2018-11-18 13:08:23,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:08:23" (1/1) ... [2018-11-18 13:08:23,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:08:23" (1/1) ... [2018-11-18 13:08:23,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:08:23" (1/1) ... [2018-11-18 13:08:23,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 13:08:23,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 13:08:23,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 13:08:23,441 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 13:08:23,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:08:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4ed71b71-6c49-4867-9982-99170febdc9f/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 13:08:23,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 13:08:23,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 13:08:23,525 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-18 13:08:23,525 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2018-11-18 13:08:23,525 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 13:08:23,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 13:08:23,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-11-18 13:08:23,525 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-18 13:08:23,525 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2018-11-18 13:08:23,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 13:08:23,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-11-18 13:08:23,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 13:08:23,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 13:08:23,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-18 13:08:23,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-11-18 13:08:23,526 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 13:08:23,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 13:08:23,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 13:08:23,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-11-18 13:08:23,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-11-18 13:08:24,140 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 13:08:24,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:08:24 BoogieIcfgContainer [2018-11-18 13:08:24,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 13:08:24,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 13:08:24,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 13:08:24,143 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 13:08:24,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:08:23" (1/3) ... [2018-11-18 13:08:24,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b58d02e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:08:24, skipping insertion in model container [2018-11-18 13:08:24,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:08:23" (2/3) ... [2018-11-18 13:08:24,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b58d02e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:08:24, skipping insertion in model container [2018-11-18 13:08:24,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:08:24" (3/3) ... [2018-11-18 13:08:24,146 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0710_true-unreach-call.c [2018-11-18 13:08:24,152 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 13:08:24,157 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 13:08:24,166 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 13:08:24,186 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 13:08:24,187 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 13:08:24,187 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 13:08:24,187 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 13:08:24,187 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 13:08:24,187 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 13:08:24,187 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 13:08:24,187 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 13:08:24,187 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 13:08:24,199 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2018-11-18 13:08:24,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 13:08:24,203 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:08:24,204 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 13:08:24,205 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:08:24,209 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:08:24,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1429076093, now seen corresponding path program 1 times [2018-11-18 13:08:24,212 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:08:24,212 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4ed71b71-6c49-4867-9982-99170febdc9f/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 13:08:24,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:08:24,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:08:24,324 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:08:24,336 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 13:08:24,336 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:08:24,348 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:08:24,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 13:08:24,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 13:08:24,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 13:08:24,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 13:08:24,359 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 2 states. [2018-11-18 13:08:24,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:08:24,378 INFO L93 Difference]: Finished difference Result 89 states and 124 transitions. [2018-11-18 13:08:24,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 13:08:24,380 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-18 13:08:24,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:08:24,388 INFO L225 Difference]: With dead ends: 89 [2018-11-18 13:08:24,388 INFO L226 Difference]: Without dead ends: 44 [2018-11-18 13:08:24,391 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 13:08:24,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-18 13:08:24,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-18 13:08:24,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-18 13:08:24,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2018-11-18 13:08:24,419 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 21 [2018-11-18 13:08:24,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:08:24,420 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2018-11-18 13:08:24,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 13:08:24,420 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2018-11-18 13:08:24,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 13:08:24,421 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:08:24,421 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 13:08:24,421 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:08:24,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:08:24,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1459276676, now seen corresponding path program 1 times [2018-11-18 13:08:24,422 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:08:24,422 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4ed71b71-6c49-4867-9982-99170febdc9f/bin-2019/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 [2018-11-18 13:08:24,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:08:24,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:08:24,537 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:08:27,412 WARN L180 SmtUtils]: Spent 794.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-11-18 13:08:35,225 WARN L180 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-11-18 13:08:43,735 WARN L180 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-11-18 13:08:45,274 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 13:08:45,275 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:08:45,282 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:08:45,282 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-11-18 13:08:45,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 13:08:45,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 13:08:45,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=85, Unknown=4, NotChecked=0, Total=110 [2018-11-18 13:08:45,284 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand 11 states. [2018-11-18 13:09:17,649 WARN L180 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 27 [2018-11-18 13:09:38,054 WARN L180 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-18 13:09:53,954 WARN L180 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-18 13:11:04,778 WARN L180 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-11-18 13:12:41,012 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-11-18 13:12:41,014 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:102) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.pop(ManagedScript.java:131) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPrecondition(IncrementalHoareTripleChecker.java:334) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:258) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:270) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:202) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:688) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:601) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:472) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.io.IOException: Stream closed at java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:433) at java.io.OutputStream.write(OutputStream.java:116) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:297) at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141) at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229) at java.io.BufferedWriter.flush(BufferedWriter.java:254) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) ... 28 more [2018-11-18 13:12:41,016 INFO L168 Benchmark]: Toolchain (without parser) took 257831.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 949.7 MB in the beginning and 990.4 MB in the end (delta: -40.7 MB). Peak memory consumption was 80.9 MB. Max. memory is 11.5 GB. [2018-11-18 13:12:41,017 INFO L168 Benchmark]: CDTParser took 0.15 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 13:12:41,017 INFO L168 Benchmark]: CACSL2BoogieTranslator took 215.30 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 933.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 13:12:41,018 INFO L168 Benchmark]: Boogie Preprocessor took 38.87 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:12:41,018 INFO L168 Benchmark]: RCFGBuilder took 700.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -157.6 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. [2018-11-18 13:12:41,019 INFO L168 Benchmark]: TraceAbstraction took 256874.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 990.4 MB in the end (delta: 100.8 MB). Peak memory consumption was 100.8 MB. Max. memory is 11.5 GB. [2018-11-18 13:12:41,021 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 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 215.30 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 933.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 38.87 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 700.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -157.6 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 256874.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 990.4 MB in the end (delta: 100.8 MB). Peak memory consumption was 100.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...