./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0f700da2-60b1-4bb8-b1a1-175e3fe7d4d7/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0f700da2-60b1-4bb8-b1a1-175e3fe7d4d7/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0f700da2-60b1-4bb8-b1a1-175e3fe7d4d7/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0f700da2-60b1-4bb8-b1a1-175e3fe7d4d7/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_0f700da2-60b1-4bb8-b1a1-175e3fe7d4d7/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0f700da2-60b1-4bb8-b1a1-175e3fe7d4d7/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3ac23ee9420d5573e041ab9b716895f5d3bb685f ............................................................................................................................................................................................................................................................................. 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_0f700da2-60b1-4bb8-b1a1-175e3fe7d4d7/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0f700da2-60b1-4bb8-b1a1-175e3fe7d4d7/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0f700da2-60b1-4bb8-b1a1-175e3fe7d4d7/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0f700da2-60b1-4bb8-b1a1-175e3fe7d4d7/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_0f700da2-60b1-4bb8-b1a1-175e3fe7d4d7/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0f700da2-60b1-4bb8-b1a1-175e3fe7d4d7/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3ac23ee9420d5573e041ab9b716895f5d3bb685f ........................................................................................................................................................................................................................................................................................................................ 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)Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 10:35:54,562 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 10:35:54,563 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 10:35:54,569 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 10:35:54,569 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 10:35:54,570 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 10:35:54,571 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 10:35:54,571 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 10:35:54,572 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 10:35:54,572 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 10:35:54,573 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 10:35:54,573 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 10:35:54,574 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 10:35:54,574 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 10:35:54,575 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 10:35:54,575 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 10:35:54,575 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 10:35:54,576 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 10:35:54,577 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 10:35:54,578 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 10:35:54,578 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 10:35:54,579 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 10:35:54,580 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 10:35:54,580 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 10:35:54,580 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 10:35:54,581 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 10:35:54,581 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 10:35:54,582 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 10:35:54,582 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 10:35:54,583 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 10:35:54,583 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 10:35:54,583 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 10:35:54,583 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 10:35:54,583 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 10:35:54,584 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 10:35:54,584 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 10:35:54,584 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0f700da2-60b1-4bb8-b1a1-175e3fe7d4d7/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 10:35:54,591 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 10:35:54,592 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 10:35:54,592 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 10:35:54,592 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 10:35:54,592 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 10:35:54,593 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 10:35:54,593 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 10:35:54,593 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 10:35:54,593 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 10:35:54,593 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 10:35:54,593 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 10:35:54,593 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 10:35:54,593 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 10:35:54,594 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 10:35:54,594 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 10:35:54,594 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 10:35:54,594 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 10:35:54,594 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 10:35:54,594 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 10:35:54,595 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 10:35:54,595 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 10:35:54,595 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 10:35:54,595 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 10:35:54,595 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 10:35:54,595 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 10:35:54,595 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 10:35:54,595 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 10:35:54,596 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 10:35:54,596 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 10:35:54,596 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 10:35:54,596 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 10:35:54,596 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 10:35:54,596 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 10:35:54,596 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 10:35:54,597 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 10:35:54,597 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 10:35:54,597 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_0f700da2-60b1-4bb8-b1a1-175e3fe7d4d7/bin-2019/utaipan 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 -> Taipan 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 -> 3ac23ee9420d5573e041ab9b716895f5d3bb685f [2018-12-09 10:35:54,615 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 10:35:54,624 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 10:35:54,626 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 10:35:54,627 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 10:35:54,627 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 10:35:54,628 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0f700da2-60b1-4bb8-b1a1-175e3fe7d4d7/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant_true-unreach-call.c [2018-12-09 10:35:54,669 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0f700da2-60b1-4bb8-b1a1-175e3fe7d4d7/bin-2019/utaipan/data/127a6e4fd/13385040aa494612b8ff382dec52e071/FLAG5f002b90b [2018-12-09 10:35:55,095 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 10:35:55,096 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0f700da2-60b1-4bb8-b1a1-175e3fe7d4d7/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant_true-unreach-call.c [2018-12-09 10:35:55,100 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0f700da2-60b1-4bb8-b1a1-175e3fe7d4d7/bin-2019/utaipan/data/127a6e4fd/13385040aa494612b8ff382dec52e071/FLAG5f002b90b [2018-12-09 10:35:55,109 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0f700da2-60b1-4bb8-b1a1-175e3fe7d4d7/bin-2019/utaipan/data/127a6e4fd/13385040aa494612b8ff382dec52e071 [2018-12-09 10:35:55,111 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 10:35:55,112 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 10:35:55,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 10:35:55,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 10:35:55,115 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 10:35:55,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:35:55" (1/1) ... [2018-12-09 10:35:55,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@706fcb08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:35:55, skipping insertion in model container [2018-12-09 10:35:55,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:35:55" (1/1) ... [2018-12-09 10:35:55,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 10:35:55,132 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 10:35:55,237 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 10:35:55,240 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 10:35:55,254 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 10:35:55,263 INFO L195 MainTranslator]: Completed translation [2018-12-09 10:35:55,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:35:55 WrapperNode [2018-12-09 10:35:55,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 10:35:55,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 10:35:55,264 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 10:35:55,264 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 10:35:55,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:35:55" (1/1) ... [2018-12-09 10:35:55,272 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:35:55" (1/1) ... [2018-12-09 10:35:55,277 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 10:35:55,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 10:35:55,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 10:35:55,277 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 10:35:55,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:35:55" (1/1) ... [2018-12-09 10:35:55,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:35:55" (1/1) ... [2018-12-09 10:35:55,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:35:55" (1/1) ... [2018-12-09 10:35:55,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:35:55" (1/1) ... [2018-12-09 10:35:55,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:35:55" (1/1) ... [2018-12-09 10:35:55,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:35:55" (1/1) ... [2018-12-09 10:35:55,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:35:55" (1/1) ... [2018-12-09 10:35:55,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 10:35:55,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 10:35:55,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 10:35:55,324 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 10:35:55,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:35:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f700da2-60b1-4bb8-b1a1-175e3fe7d4d7/bin-2019/utaipan/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 [2018-12-09 10:35:55,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 10:35:55,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 10:35:55,355 INFO L130 BoogieDeclarations]: Found specification of procedure SqrtR [2018-12-09 10:35:55,355 INFO L138 BoogieDeclarations]: Found implementation of procedure SqrtR [2018-12-09 10:35:55,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 10:35:55,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 10:35:55,355 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 10:35:55,355 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 10:35:55,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-09 10:35:55,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-09 10:35:55,456 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 10:35:55,456 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-09 10:35:55,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:35:55 BoogieIcfgContainer [2018-12-09 10:35:55,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 10:35:55,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 10:35:55,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 10:35:55,460 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 10:35:55,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 10:35:55" (1/3) ... [2018-12-09 10:35:55,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a95cee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:35:55, skipping insertion in model container [2018-12-09 10:35:55,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:35:55" (2/3) ... [2018-12-09 10:35:55,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a95cee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:35:55, skipping insertion in model container [2018-12-09 10:35:55,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:35:55" (3/3) ... [2018-12-09 10:35:55,462 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_Newton_pseudoconstant_true-unreach-call.c [2018-12-09 10:35:55,470 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 10:35:55,474 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 10:35:55,483 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 10:35:55,500 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 10:35:55,500 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 10:35:55,500 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 10:35:55,500 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 10:35:55,500 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 10:35:55,500 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 10:35:55,500 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 10:35:55,500 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 10:35:55,509 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-12-09 10:35:55,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-09 10:35:55,513 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 10:35:55,513 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 10:35:55,514 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 10:35:55,517 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:35:55,517 INFO L82 PathProgramCache]: Analyzing trace with hash -995072322, now seen corresponding path program 1 times [2018-12-09 10:35:55,518 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 10:35:55,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:35:55,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 10:35:55,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:35:55,553 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 10:35:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:35:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:35:55,601 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 10:35:55,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 10:35:55 BoogieIcfgContainer [2018-12-09 10:35:55,616 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 10:35:55,617 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 10:35:55,617 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 10:35:55,617 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 10:35:55,617 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:35:55" (3/4) ... [2018-12-09 10:35:55,619 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 10:35:55,619 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 10:35:55,620 INFO L168 Benchmark]: Toolchain (without parser) took 508.06 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 949.8 MB in the beginning and 1.1 GB in the end (delta: -133.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 10:35:55,621 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 976.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 10:35:55,621 INFO L168 Benchmark]: CACSL2BoogieTranslator took 150.62 ms. Allocated memory is still 1.0 GB. Free memory was 949.8 MB in the beginning and 939.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 10:35:55,622 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.17 ms. Allocated memory is still 1.0 GB. Free memory is still 939.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 10:35:55,622 INFO L168 Benchmark]: Boogie Preprocessor took 46.62 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -171.6 MB). Peak memory consumption was 15.9 MB. Max. memory is 11.5 GB. [2018-12-09 10:35:55,622 INFO L168 Benchmark]: RCFGBuilder took 133.00 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: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-12-09 10:35:55,623 INFO L168 Benchmark]: TraceAbstraction took 159.21 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-12-09 10:35:55,623 INFO L168 Benchmark]: Witness Printer took 2.70 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 10:35:55,625 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 976.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 150.62 ms. Allocated memory is still 1.0 GB. Free memory was 949.8 MB in the beginning and 939.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.17 ms. Allocated memory is still 1.0 GB. Free memory is still 939.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 46.62 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -171.6 MB). Peak memory consumption was 15.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 133.00 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: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 159.21 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Witness Printer took 2.70 ms. Allocated memory is still 1.1 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: 8]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 47, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of someBinaryArithmeticDOUBLEoperation at line 32. Possible FailurePath: [L10] double _EPS = 1e-6; VAL [\old(_EPS)=2, _EPS=1/1000000] [L37] double d, dd, r; [L38] double epsilon = 1e-8; [L40] d = 1. VAL [_EPS=1/1000000, d=1, epsilon=1/100000000] [L40] COND TRUE d <= 20. [L42] dd = __VERIFIER_nondet_double() [L45] CALL, EXPR SqrtR(dd) VAL [\old(Input)=3, _EPS=1/1000000] [L14] double xn, xnp1, residu, lsup, linf; [L15] int i, cond; VAL [\old(Input)=3, _EPS=1/1000000, Input=3] [L16] COND TRUE Input <= 1.0 [L16] xn = 1.0 VAL [\old(Input)=3, _EPS=1/1000000, Input=3, xn=1] [L17] xnp1 = xn [L18] residu = 2.0*_EPS*(xn+xnp1) [L19] lsup = _EPS * (xn+xnp1) [L20] linf = -lsup [L21] cond = ((residu > lsup) || (residu < linf)) [L22] i = 0 VAL [\old(Input)=3, _EPS=1/1000000, cond=0, i=0, Input=3, xn=1, xn=1] [L23] COND FALSE !(\read(cond)) VAL [\old(Input)=3, _EPS=1/1000000, cond=0, i=0, Input=3, xn=1, xn=1] [L32] return 1.0 / xnp1; VAL [\old(Input)=3, _EPS=1/1000000, cond=0, i=0, Input=3, xn=1, xn=1] [L45] RET, EXPR SqrtR(dd) VAL [_EPS=1/1000000, d=1, d=3, epsilon=1/100000000, SqrtR(dd)=4] [L45] r = SqrtR(dd) [L47] CALL __VERIFIER_assert(r >= 0.9 && r <= 5.) VAL [\old(cond)=0, _EPS=1/1000000] [L8] COND TRUE !(cond) VAL [\old(cond)=0, _EPS=1/1000000, cond=0] [L8] __VERIFIER_error() VAL [\old(cond)=0, _EPS=1/1000000, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 0.1.23-635dfa2 [2018-12-09 10:35:56,858 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 10:35:56,858 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 10:35:56,864 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 10:35:56,865 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 10:35:56,865 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 10:35:56,866 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 10:35:56,867 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 10:35:56,868 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 10:35:56,869 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 10:35:56,869 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 10:35:56,869 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 10:35:56,870 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 10:35:56,870 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 10:35:56,871 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 10:35:56,871 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 10:35:56,871 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 10:35:56,872 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 10:35:56,873 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 10:35:56,874 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 10:35:56,875 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 10:35:56,875 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 10:35:56,877 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 10:35:56,877 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 10:35:56,877 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 10:35:56,878 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 10:35:56,878 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 10:35:56,879 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 10:35:56,879 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 10:35:56,880 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 10:35:56,880 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 10:35:56,880 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 10:35:56,880 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 10:35:56,881 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 10:35:56,881 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 10:35:56,882 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 10:35:56,882 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0f700da2-60b1-4bb8-b1a1-175e3fe7d4d7/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-09 10:35:56,891 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 10:35:56,891 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 10:35:56,892 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 10:35:56,892 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 10:35:56,892 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 10:35:56,892 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 10:35:56,892 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 10:35:56,893 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 10:35:56,893 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 10:35:56,893 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 10:35:56,893 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 10:35:56,894 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 10:35:56,894 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 10:35:56,894 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 10:35:56,894 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 10:35:56,894 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 10:35:56,894 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 10:35:56,894 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 10:35:56,894 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 10:35:56,895 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 10:35:56,895 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 10:35:56,895 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 10:35:56,895 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 10:35:56,895 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 10:35:56,895 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 10:35:56,895 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 10:35:56,896 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 10:35:56,896 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 10:35:56,896 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 10:35:56,896 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 10:35:56,896 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 10:35:56,896 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-09 10:35:56,896 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 10:35:56,896 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 10:35:56,897 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-09 10:35:56,897 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_0f700da2-60b1-4bb8-b1a1-175e3fe7d4d7/bin-2019/utaipan 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 -> Taipan 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 -> 3ac23ee9420d5573e041ab9b716895f5d3bb685f [2018-12-09 10:35:56,920 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 10:35:56,927 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 10:35:56,929 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 10:35:56,930 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 10:35:56,930 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 10:35:56,931 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0f700da2-60b1-4bb8-b1a1-175e3fe7d4d7/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant_true-unreach-call.c [2018-12-09 10:35:56,965 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0f700da2-60b1-4bb8-b1a1-175e3fe7d4d7/bin-2019/utaipan/data/e54efa184/1242f79c19c4464d8a8e2ef32193ba21/FLAG5d540bf5d [2018-12-09 10:35:57,376 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 10:35:57,377 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0f700da2-60b1-4bb8-b1a1-175e3fe7d4d7/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant_true-unreach-call.c [2018-12-09 10:35:57,380 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0f700da2-60b1-4bb8-b1a1-175e3fe7d4d7/bin-2019/utaipan/data/e54efa184/1242f79c19c4464d8a8e2ef32193ba21/FLAG5d540bf5d [2018-12-09 10:35:57,388 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0f700da2-60b1-4bb8-b1a1-175e3fe7d4d7/bin-2019/utaipan/data/e54efa184/1242f79c19c4464d8a8e2ef32193ba21 [2018-12-09 10:35:57,390 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 10:35:57,391 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 10:35:57,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 10:35:57,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 10:35:57,393 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 10:35:57,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:35:57" (1/1) ... [2018-12-09 10:35:57,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@267733d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:35:57, skipping insertion in model container [2018-12-09 10:35:57,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:35:57" (1/1) ... [2018-12-09 10:35:57,399 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 10:35:57,409 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 10:35:57,501 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 10:35:57,504 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 10:35:57,517 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 10:35:57,526 INFO L195 MainTranslator]: Completed translation [2018-12-09 10:35:57,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:35:57 WrapperNode [2018-12-09 10:35:57,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 10:35:57,526 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 10:35:57,526 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 10:35:57,527 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 10:35:57,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:35:57" (1/1) ... [2018-12-09 10:35:57,536 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:35:57" (1/1) ... [2018-12-09 10:35:57,540 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 10:35:57,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 10:35:57,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 10:35:57,540 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 10:35:57,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:35:57" (1/1) ... [2018-12-09 10:35:57,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:35:57" (1/1) ... [2018-12-09 10:35:57,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:35:57" (1/1) ... [2018-12-09 10:35:57,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:35:57" (1/1) ... [2018-12-09 10:35:57,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:35:57" (1/1) ... [2018-12-09 10:35:57,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:35:57" (1/1) ... [2018-12-09 10:35:57,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:35:57" (1/1) ... [2018-12-09 10:35:57,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 10:35:57,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 10:35:57,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 10:35:57,558 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 10:35:57,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:35:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f700da2-60b1-4bb8-b1a1-175e3fe7d4d7/bin-2019/utaipan/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 [2018-12-09 10:35:57,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 10:35:57,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 10:35:57,618 INFO L130 BoogieDeclarations]: Found specification of procedure SqrtR [2018-12-09 10:35:57,618 INFO L138 BoogieDeclarations]: Found implementation of procedure SqrtR [2018-12-09 10:35:57,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 10:35:57,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 10:35:57,619 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 10:35:57,619 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 10:35:57,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-09 10:35:57,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-09 10:36:06,248 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 10:36:06,248 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-09 10:36:06,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:36:06 BoogieIcfgContainer [2018-12-09 10:36:06,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 10:36:06,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 10:36:06,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 10:36:06,250 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 10:36:06,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 10:35:57" (1/3) ... [2018-12-09 10:36:06,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30fbd64b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:36:06, skipping insertion in model container [2018-12-09 10:36:06,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:35:57" (2/3) ... [2018-12-09 10:36:06,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30fbd64b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:36:06, skipping insertion in model container [2018-12-09 10:36:06,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:36:06" (3/3) ... [2018-12-09 10:36:06,252 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_Newton_pseudoconstant_true-unreach-call.c [2018-12-09 10:36:06,258 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 10:36:06,263 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 10:36:06,272 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 10:36:06,291 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 10:36:06,291 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 10:36:06,292 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 10:36:06,292 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 10:36:06,292 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 10:36:06,292 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 10:36:06,292 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 10:36:06,292 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 10:36:06,292 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 10:36:06,303 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-12-09 10:36:06,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-09 10:36:06,307 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 10:36:06,308 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 10:36:06,309 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 10:36:06,312 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:36:06,312 INFO L82 PathProgramCache]: Analyzing trace with hash -995072322, now seen corresponding path program 1 times [2018-12-09 10:36:06,315 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 10:36:06,315 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f700da2-60b1-4bb8-b1a1-175e3fe7d4d7/bin-2019/utaipan/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 [2018-12-09 10:36:06,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 10:36:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:36:07,573 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:36:14,310 WARN L180 SmtUtils]: Spent 4.89 s on a formula simplification. DAG size of input: 31 DAG size of output: 9 [2018-12-09 10:36:14,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 10:36:14,313 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 10:36:14,336 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 10:36:14,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 10:36:14,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 10:36:14,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 10:36:14,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-09 10:36:14,347 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 5 states. [2018-12-09 10:36:21,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 10:36:21,258 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2018-12-09 10:36:21,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 10:36:21,260 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-12-09 10:36:21,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 10:36:21,265 INFO L225 Difference]: With dead ends: 54 [2018-12-09 10:36:21,265 INFO L226 Difference]: Without dead ends: 26 [2018-12-09 10:36:21,267 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-09 10:36:21,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-12-09 10:36:21,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-12-09 10:36:21,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-09 10:36:21,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2018-12-09 10:36:21,288 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 20 [2018-12-09 10:36:21,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 10:36:21,288 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2018-12-09 10:36:21,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 10:36:21,289 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2018-12-09 10:36:21,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-09 10:36:21,289 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 10:36:21,289 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 10:36:21,289 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 10:36:21,290 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:36:21,290 INFO L82 PathProgramCache]: Analyzing trace with hash -294007744, now seen corresponding path program 1 times [2018-12-09 10:36:21,290 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 10:36:21,290 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f700da2-60b1-4bb8-b1a1-175e3fe7d4d7/bin-2019/utaipan/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 [2018-12-09 10:36:21,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 10:36:24,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:36:24,673 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:36:54,558 WARN L180 SmtUtils]: Spent 12.52 s on a formula simplification that was a NOOP. DAG size: 14 [2018-12-09 10:36:56,902 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (let ((.cse4 (fp.add roundNearestTiesToEven c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0))) (let ((.cse2 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) c_~_EPS~0) .cse4)) (.cse3 (fp.mul roundNearestTiesToEven c_~_EPS~0 .cse4))) (let ((.cse1 (fp.gt .cse2 .cse3)) (.cse0 (fp.lt .cse2 (fp.neg .cse3)))) (or (and (or .cse0 .cse1) (= (_ bv1 32) c_SqrtR_~cond~0)) (and (not .cse1) (= (_ bv0 32) c_SqrtR_~cond~0) (not .cse0)))))) (not (fp.leq |c_SqrtR_#in~Input| .cse5)) (= c_~_EPS~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (= (fp.div roundNearestTiesToEven .cse5 |c_SqrtR_#in~Input|) c_SqrtR_~xnp1~0))) is different from false [2018-12-09 10:36:58,973 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (let ((.cse4 (fp.add roundNearestTiesToEven c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0))) (let ((.cse2 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) c_~_EPS~0) .cse4)) (.cse3 (fp.mul roundNearestTiesToEven c_~_EPS~0 .cse4))) (let ((.cse1 (fp.gt .cse2 .cse3)) (.cse0 (fp.lt .cse2 (fp.neg .cse3)))) (or (and (or .cse0 .cse1) (= (_ bv1 32) c_SqrtR_~cond~0)) (and (not .cse1) (= (_ bv0 32) c_SqrtR_~cond~0) (not .cse0)))))) (not (fp.leq |c_SqrtR_#in~Input| .cse5)) (= c_~_EPS~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (= (fp.div roundNearestTiesToEven .cse5 |c_SqrtR_#in~Input|) c_SqrtR_~xnp1~0))) is different from true [2018-12-09 10:37:01,361 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse3 (fp.add roundNearestTiesToEven c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) c_~_EPS~0) .cse3)) (.cse1 (fp.mul roundNearestTiesToEven c_~_EPS~0 .cse3))) (and (not (fp.gt .cse0 .cse1)) (not (fp.leq |c_SqrtR_#in~Input| .cse2)) (= c_~_EPS~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (= (fp.div roundNearestTiesToEven .cse2 |c_SqrtR_#in~Input|) c_SqrtR_~xnp1~0) (not (fp.lt .cse0 (fp.neg .cse1)))))) is different from false [2018-12-09 10:37:03,855 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (fp.add roundNearestTiesToEven c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) c_~_EPS~0) .cse3)) (.cse1 (fp.mul roundNearestTiesToEven c_~_EPS~0 .cse3))) (and (not (fp.gt .cse0 .cse1)) (not (fp.leq |c_SqrtR_#in~Input| .cse2)) (= c_~_EPS~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (= (fp.div roundNearestTiesToEven .cse2 |c_SqrtR_#in~Input|) c_SqrtR_~xnp1~0) (not (fp.lt .cse0 (fp.neg .cse1)))))) is different from true [2018-12-09 10:37:06,483 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse3 (fp.div roundNearestTiesToEven .cse2 |c_SqrtR_#in~Input|))) (let ((.cse4 (fp.add roundNearestTiesToEven .cse3 .cse3))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) c_~_EPS~0) .cse4)) (.cse1 (fp.mul roundNearestTiesToEven c_~_EPS~0 .cse4))) (and (not (fp.lt .cse0 (fp.neg .cse1))) (= |c_SqrtR_#res| (fp.div roundNearestTiesToEven .cse2 .cse3)) (not (fp.leq |c_SqrtR_#in~Input| .cse2)) (not (fp.gt .cse0 .cse1)) (= c_~_EPS~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0)))))))) is different from false [2018-12-09 10:37:08,861 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse3 (fp.div roundNearestTiesToEven .cse2 |c_SqrtR_#in~Input|))) (let ((.cse4 (fp.add roundNearestTiesToEven .cse3 .cse3))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) c_~_EPS~0) .cse4)) (.cse1 (fp.mul roundNearestTiesToEven c_~_EPS~0 .cse4))) (and (not (fp.lt .cse0 (fp.neg .cse1))) (= |c_SqrtR_#res| (fp.div roundNearestTiesToEven .cse2 .cse3)) (not (fp.leq |c_SqrtR_#in~Input| .cse2)) (not (fp.gt .cse0 .cse1)) (= c_~_EPS~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0)))))))) is different from true [2018-12-09 10:37:11,509 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~dd~0 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse4 (fp.div roundNearestTiesToEven .cse2 main_~dd~0))) (let ((.cse5 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse6 (fp.add roundNearestTiesToEven .cse4 .cse4))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse5) .cse6)) (.cse1 (fp.mul roundNearestTiesToEven .cse5 .cse6)) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (and (not (fp.gt .cse0 .cse1)) (not (fp.leq main_~dd~0 .cse2)) (fp.leq main_~dd~0 (fp.add roundNearestTiesToEven .cse2 .cse3)) (not (fp.lt .cse0 (fp.neg .cse1))) (fp.geq main_~dd~0 (fp.sub roundNearestTiesToEven .cse2 .cse3)) (= |c_main_#t~ret3| (fp.div roundNearestTiesToEven .cse2 .cse4)))))))) is different from false [2018-12-09 10:37:14,017 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~dd~0 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse4 (fp.div roundNearestTiesToEven .cse2 main_~dd~0))) (let ((.cse5 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse6 (fp.add roundNearestTiesToEven .cse4 .cse4))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse5) .cse6)) (.cse1 (fp.mul roundNearestTiesToEven .cse5 .cse6)) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (and (not (fp.gt .cse0 .cse1)) (not (fp.leq main_~dd~0 .cse2)) (fp.leq main_~dd~0 (fp.add roundNearestTiesToEven .cse2 .cse3)) (not (fp.lt .cse0 (fp.neg .cse1))) (fp.geq main_~dd~0 (fp.sub roundNearestTiesToEven .cse2 .cse3)) (= |c_main_#t~ret3| (fp.div roundNearestTiesToEven .cse2 .cse4)))))))) is different from true [2018-12-09 10:37:16,674 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~dd~0 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse3 (fp.div roundNearestTiesToEven .cse2 main_~dd~0))) (let ((.cse5 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse6 (fp.add roundNearestTiesToEven .cse3 .cse3))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse5) .cse6)) (.cse1 (fp.mul roundNearestTiesToEven .cse5 .cse6)) (.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (and (not (fp.gt .cse0 .cse1)) (not (fp.leq main_~dd~0 .cse2)) (= (fp.div roundNearestTiesToEven .cse2 .cse3) c_main_~r~0) (fp.leq main_~dd~0 (fp.add roundNearestTiesToEven .cse2 .cse4)) (not (fp.lt .cse0 (fp.neg .cse1))) (fp.geq main_~dd~0 (fp.sub roundNearestTiesToEven .cse2 .cse4)))))))) is different from false [2018-12-09 10:37:19,206 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~dd~0 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse3 (fp.div roundNearestTiesToEven .cse2 main_~dd~0))) (let ((.cse5 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse6 (fp.add roundNearestTiesToEven .cse3 .cse3))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse5) .cse6)) (.cse1 (fp.mul roundNearestTiesToEven .cse5 .cse6)) (.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (and (not (fp.gt .cse0 .cse1)) (not (fp.leq main_~dd~0 .cse2)) (= (fp.div roundNearestTiesToEven .cse2 .cse3) c_main_~r~0) (fp.leq main_~dd~0 (fp.add roundNearestTiesToEven .cse2 .cse4)) (not (fp.lt .cse0 (fp.neg .cse1))) (fp.geq main_~dd~0 (fp.sub roundNearestTiesToEven .cse2 .cse4)))))))) is different from true [2018-12-09 10:37:39,635 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-12-09 10:37:39,836 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2018-12-09 10:37:39,837 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)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.checkSat(ManagedScript.java:141) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:84) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:823) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:767) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:339) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:575) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:286) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) 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:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 39 more [2018-12-09 10:37:39,841 INFO L168 Benchmark]: Toolchain (without parser) took 102451.14 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 944.7 MB in the beginning and 1.0 GB in the end (delta: -69.3 MB). Peak memory consumption was 48.2 MB. Max. memory is 11.5 GB. [2018-12-09 10:37:39,843 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 10:37:39,843 INFO L168 Benchmark]: CACSL2BoogieTranslator took 135.16 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 934.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 10:37:39,844 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.47 ms. Allocated memory is still 1.0 GB. Free memory was 934.0 MB in the beginning and 928.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-09 10:37:39,845 INFO L168 Benchmark]: Boogie Preprocessor took 17.56 ms. Allocated memory is still 1.0 GB. Free memory is still 928.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 10:37:39,845 INFO L168 Benchmark]: RCFGBuilder took 8690.40 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 928.6 MB in the beginning and 1.1 GB in the end (delta: -151.6 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. [2018-12-09 10:37:39,846 INFO L168 Benchmark]: TraceAbstraction took 93592.00 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: 66.2 MB). Peak memory consumption was 66.2 MB. Max. memory is 11.5 GB. [2018-12-09 10:37:39,849 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 135.16 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 934.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.47 ms. Allocated memory is still 1.0 GB. Free memory was 934.0 MB in the beginning and 928.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.56 ms. Allocated memory is still 1.0 GB. Free memory is still 928.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 8690.40 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 928.6 MB in the beginning and 1.1 GB in the end (delta: -151.6 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 93592.00 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: 66.2 MB). Peak memory consumption was 66.2 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)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...