./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.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 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ffab9e32-c117-4a6d-a2f7-bfacf0ab31b6/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ffab9e32-c117-4a6d-a2f7-bfacf0ab31b6/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ffab9e32-c117-4a6d-a2f7-bfacf0ab31b6/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ffab9e32-c117-4a6d-a2f7-bfacf0ab31b6/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_ffab9e32-c117-4a6d-a2f7-bfacf0ab31b6/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ffab9e32-c117-4a6d-a2f7-bfacf0ab31b6/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_ffab9e32-c117-4a6d-a2f7-bfacf0ab31b6/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ffab9e32-c117-4a6d-a2f7-bfacf0ab31b6/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ffab9e32-c117-4a6d-a2f7-bfacf0ab31b6/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ffab9e32-c117-4a6d-a2f7-bfacf0ab31b6/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_ffab9e32-c117-4a6d-a2f7-bfacf0ab31b6/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ffab9e32-c117-4a6d-a2f7-bfacf0ab31b6/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 0.1.23-5842f4b [2018-11-18 16:54:32,168 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 16:54:32,169 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 16:54:32,177 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 16:54:32,177 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 16:54:32,177 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 16:54:32,178 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 16:54:32,180 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 16:54:32,181 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 16:54:32,181 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 16:54:32,182 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 16:54:32,182 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 16:54:32,183 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 16:54:32,184 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 16:54:32,184 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 16:54:32,185 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 16:54:32,185 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 16:54:32,186 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 16:54:32,188 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 16:54:32,189 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 16:54:32,189 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 16:54:32,190 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 16:54:32,192 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 16:54:32,192 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 16:54:32,192 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 16:54:32,193 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 16:54:32,194 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 16:54:32,194 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 16:54:32,195 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 16:54:32,196 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 16:54:32,196 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 16:54:32,197 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 16:54:32,197 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 16:54:32,197 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 16:54:32,197 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 16:54:32,198 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 16:54:32,198 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ffab9e32-c117-4a6d-a2f7-bfacf0ab31b6/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 16:54:32,209 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 16:54:32,209 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 16:54:32,209 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 16:54:32,210 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 16:54:32,210 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 16:54:32,210 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 16:54:32,210 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 16:54:32,210 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 16:54:32,210 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 16:54:32,210 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 16:54:32,211 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 16:54:32,211 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 16:54:32,211 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 16:54:32,211 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 16:54:32,211 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 16:54:32,212 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 16:54:32,212 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 16:54:32,212 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 16:54:32,212 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 16:54:32,212 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 16:54:32,212 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 16:54:32,212 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 16:54:32,212 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 16:54:32,213 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 16:54:32,213 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 16:54:32,213 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 16:54:32,213 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 16:54:32,213 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 16:54:32,213 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 16:54:32,213 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:54:32,214 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 16:54:32,214 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 16:54:32,214 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 16:54:32,214 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 16:54:32,214 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 16:54:32,214 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 16:54:32,214 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 16:54:32,214 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_ffab9e32-c117-4a6d-a2f7-bfacf0ab31b6/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 [2018-11-18 16:54:32,238 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 16:54:32,247 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 16:54:32,249 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 16:54:32,251 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 16:54:32,251 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 16:54:32,251 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ffab9e32-c117-4a6d-a2f7-bfacf0ab31b6/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant_true-unreach-call.c [2018-11-18 16:54:32,292 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ffab9e32-c117-4a6d-a2f7-bfacf0ab31b6/bin-2019/utaipan/data/208fc55ba/c35c642136384852a0a521ef6c44345a/FLAGda0bf621f [2018-11-18 16:54:32,681 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 16:54:32,681 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ffab9e32-c117-4a6d-a2f7-bfacf0ab31b6/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant_true-unreach-call.c [2018-11-18 16:54:32,685 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ffab9e32-c117-4a6d-a2f7-bfacf0ab31b6/bin-2019/utaipan/data/208fc55ba/c35c642136384852a0a521ef6c44345a/FLAGda0bf621f [2018-11-18 16:54:32,694 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ffab9e32-c117-4a6d-a2f7-bfacf0ab31b6/bin-2019/utaipan/data/208fc55ba/c35c642136384852a0a521ef6c44345a [2018-11-18 16:54:32,696 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 16:54:32,697 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 16:54:32,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 16:54:32,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 16:54:32,700 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 16:54:32,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:54:32" (1/1) ... [2018-11-18 16:54:32,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ff47436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:32, skipping insertion in model container [2018-11-18 16:54:32,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:54:32" (1/1) ... [2018-11-18 16:54:32,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 16:54:32,726 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 16:54:32,848 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:54:32,851 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 16:54:32,863 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:54:32,874 INFO L195 MainTranslator]: Completed translation [2018-11-18 16:54:32,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:32 WrapperNode [2018-11-18 16:54:32,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 16:54:32,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 16:54:32,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 16:54:32,875 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 16:54:32,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:32" (1/1) ... [2018-11-18 16:54:32,885 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:32" (1/1) ... [2018-11-18 16:54:32,891 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 16:54:32,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 16:54:32,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 16:54:32,892 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 16:54:32,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:32" (1/1) ... [2018-11-18 16:54:32,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:32" (1/1) ... [2018-11-18 16:54:32,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:32" (1/1) ... [2018-11-18 16:54:32,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:32" (1/1) ... [2018-11-18 16:54:32,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:32" (1/1) ... [2018-11-18 16:54:32,908 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:32" (1/1) ... [2018-11-18 16:54:32,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:32" (1/1) ... [2018-11-18 16:54:32,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 16:54:32,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 16:54:32,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 16:54:32,910 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 16:54:32,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ffab9e32-c117-4a6d-a2f7-bfacf0ab31b6/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 [2018-11-18 16:54:32,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 16:54:32,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 16:54:32,990 INFO L130 BoogieDeclarations]: Found specification of procedure SqrtR [2018-11-18 16:54:32,990 INFO L138 BoogieDeclarations]: Found implementation of procedure SqrtR [2018-11-18 16:54:32,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 16:54:32,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 16:54:32,991 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 16:54:32,991 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 16:54:32,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 16:54:32,991 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 16:54:33,114 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 16:54:33,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:54:33 BoogieIcfgContainer [2018-11-18 16:54:33,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 16:54:33,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 16:54:33,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 16:54:33,118 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 16:54:33,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:54:32" (1/3) ... [2018-11-18 16:54:33,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aef4051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:54:33, skipping insertion in model container [2018-11-18 16:54:33,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:32" (2/3) ... [2018-11-18 16:54:33,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aef4051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:54:33, skipping insertion in model container [2018-11-18 16:54:33,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:54:33" (3/3) ... [2018-11-18 16:54:33,121 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_Newton_pseudoconstant_true-unreach-call.c [2018-11-18 16:54:33,129 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 16:54:33,134 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 16:54:33,147 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 16:54:33,167 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 16:54:33,167 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 16:54:33,167 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 16:54:33,167 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 16:54:33,167 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 16:54:33,167 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 16:54:33,168 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 16:54:33,168 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 16:54:33,179 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-11-18 16:54:33,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 16:54:33,183 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:54:33,184 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 16:54:33,186 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:54:33,189 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:54:33,189 INFO L82 PathProgramCache]: Analyzing trace with hash 924932034, now seen corresponding path program 1 times [2018-11-18 16:54:33,190 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:54:33,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:54:33,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:54:33,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:54:33,219 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:54:33,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:54:33,268 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 16:54:33,270 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:54:33,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 16:54:33,270 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:54:33,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 16:54:33,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 16:54:33,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 16:54:33,287 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2018-11-18 16:54:33,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:54:33,300 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2018-11-18 16:54:33,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 16:54:33,301 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-18 16:54:33,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:54:33,306 INFO L225 Difference]: With dead ends: 56 [2018-11-18 16:54:33,306 INFO L226 Difference]: Without dead ends: 26 [2018-11-18 16:54:33,308 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 16:54:33,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-18 16:54:33,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-11-18 16:54:33,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-18 16:54:33,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2018-11-18 16:54:33,332 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 21 [2018-11-18 16:54:33,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:54:33,332 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2018-11-18 16:54:33,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 16:54:33,333 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2018-11-18 16:54:33,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 16:54:33,333 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:54:33,333 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 16:54:33,334 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:54:33,334 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:54:33,334 INFO L82 PathProgramCache]: Analyzing trace with hash 244023785, now seen corresponding path program 1 times [2018-11-18 16:54:33,334 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:54:33,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:54:33,335 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:54:33,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:54:33,335 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:54:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:54:33,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:54:33,368 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 16:54:33,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 04:54:33 BoogieIcfgContainer [2018-11-18 16:54:33,386 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 16:54:33,386 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 16:54:33,386 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 16:54:33,386 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 16:54:33,387 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:54:33" (3/4) ... [2018-11-18 16:54:33,389 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 16:54:33,389 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 16:54:33,390 INFO L168 Benchmark]: Toolchain (without parser) took 693.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 957.1 MB in the beginning and 1.1 GB in the end (delta: -139.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:54:33,391 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:54:33,391 INFO L168 Benchmark]: CACSL2BoogieTranslator took 177.55 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 946.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:54:33,391 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.39 ms. Allocated memory is still 1.0 GB. Free memory was 946.4 MB in the beginning and 943.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:54:33,392 INFO L168 Benchmark]: Boogie Preprocessor took 18.46 ms. Allocated memory is still 1.0 GB. Free memory is still 943.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:54:33,392 INFO L168 Benchmark]: RCFGBuilder took 204.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 943.7 MB in the beginning and 1.1 GB in the end (delta: -180.4 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. [2018-11-18 16:54:33,392 INFO L168 Benchmark]: TraceAbstraction took 271.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. [2018-11-18 16:54:33,393 INFO L168 Benchmark]: Witness Printer took 3.04 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:54:33,395 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 177.55 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 946.4 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 16.39 ms. Allocated memory is still 1.0 GB. Free memory was 946.4 MB in the beginning and 943.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.46 ms. Allocated memory is still 1.0 GB. Free memory is still 943.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 204.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 943.7 MB in the beginning and 1.1 GB in the end (delta: -180.4 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 271.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. * Witness Printer took 3.04 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 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 21, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of someBinaryArithmeticDOUBLEoperation at line 32. Possible FailurePath: [L10] double _EPS = 1e-6; VAL [\old(_EPS)=3, _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)=2, _EPS=1/1000000] [L14] double xn, xnp1, residu, lsup, linf; [L15] int i, cond; VAL [\old(Input)=2, _EPS=1/1000000, Input=2] [L16] COND TRUE Input <= 1.0 [L16] xn = 1.0 VAL [\old(Input)=2, _EPS=1/1000000, Input=2, 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)=2, _EPS=1/1000000, cond=0, i=0, Input=2, xn=1, xn=1] [L23] COND FALSE !(\read(cond)) VAL [\old(Input)=2, _EPS=1/1000000, cond=0, i=0, Input=2, xn=1, xn=1] [L32] RET return 1.0 / xnp1; VAL [\old(Input)=2, _EPS=1/1000000, cond=0, i=0, Input=2, xn=1, xn=1] [L45] EXPR SqrtR(dd) VAL [_EPS=1/1000000, d=1, d=2, 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, 31 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 33 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=31occurred 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, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 400 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 16:54:34,844 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 16:54:34,845 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 16:54:34,854 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 16:54:34,855 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 16:54:34,855 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 16:54:34,856 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 16:54:34,858 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 16:54:34,859 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 16:54:34,859 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 16:54:34,860 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 16:54:34,860 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 16:54:34,861 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 16:54:34,861 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 16:54:34,862 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 16:54:34,863 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 16:54:34,863 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 16:54:34,865 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 16:54:34,866 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 16:54:34,867 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 16:54:34,868 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 16:54:34,868 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 16:54:34,870 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 16:54:34,870 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 16:54:34,870 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 16:54:34,871 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 16:54:34,872 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 16:54:34,872 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 16:54:34,873 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 16:54:34,874 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 16:54:34,874 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 16:54:34,874 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 16:54:34,875 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 16:54:34,875 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 16:54:34,875 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 16:54:34,876 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 16:54:34,876 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ffab9e32-c117-4a6d-a2f7-bfacf0ab31b6/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-18 16:54:34,886 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 16:54:34,886 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 16:54:34,887 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 16:54:34,887 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 16:54:34,887 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 16:54:34,887 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 16:54:34,888 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 16:54:34,888 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 16:54:34,888 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 16:54:34,888 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 16:54:34,888 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 16:54:34,889 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 16:54:34,889 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 16:54:34,889 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 16:54:34,889 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 16:54:34,889 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 16:54:34,889 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 16:54:34,889 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 16:54:34,889 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 16:54:34,890 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 16:54:34,890 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 16:54:34,890 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 16:54:34,890 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 16:54:34,890 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 16:54:34,890 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 16:54:34,890 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 16:54:34,891 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 16:54:34,891 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:54:34,891 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 16:54:34,891 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 16:54:34,891 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 16:54:34,891 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 16:54:34,891 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 16:54:34,891 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 16:54:34,892 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 16:54:34,892 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_ffab9e32-c117-4a6d-a2f7-bfacf0ab31b6/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 [2018-11-18 16:54:34,921 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 16:54:34,930 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 16:54:34,932 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 16:54:34,933 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 16:54:34,934 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 16:54:34,934 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ffab9e32-c117-4a6d-a2f7-bfacf0ab31b6/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant_true-unreach-call.c [2018-11-18 16:54:34,978 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ffab9e32-c117-4a6d-a2f7-bfacf0ab31b6/bin-2019/utaipan/data/adfbce2f9/26b474cc380e44b0ad409f7b0809ecda/FLAG5e36422d3 [2018-11-18 16:54:35,304 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 16:54:35,305 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ffab9e32-c117-4a6d-a2f7-bfacf0ab31b6/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant_true-unreach-call.c [2018-11-18 16:54:35,309 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ffab9e32-c117-4a6d-a2f7-bfacf0ab31b6/bin-2019/utaipan/data/adfbce2f9/26b474cc380e44b0ad409f7b0809ecda/FLAG5e36422d3 [2018-11-18 16:54:35,735 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ffab9e32-c117-4a6d-a2f7-bfacf0ab31b6/bin-2019/utaipan/data/adfbce2f9/26b474cc380e44b0ad409f7b0809ecda [2018-11-18 16:54:35,737 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 16:54:35,737 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 16:54:35,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 16:54:35,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 16:54:35,740 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 16:54:35,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:54:35" (1/1) ... [2018-11-18 16:54:35,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27184d11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:35, skipping insertion in model container [2018-11-18 16:54:35,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:54:35" (1/1) ... [2018-11-18 16:54:35,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 16:54:35,762 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 16:54:35,898 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:54:35,901 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 16:54:35,916 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:54:35,926 INFO L195 MainTranslator]: Completed translation [2018-11-18 16:54:35,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:35 WrapperNode [2018-11-18 16:54:35,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 16:54:35,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 16:54:35,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 16:54:35,927 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 16:54:35,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:35" (1/1) ... [2018-11-18 16:54:35,937 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:35" (1/1) ... [2018-11-18 16:54:35,941 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 16:54:35,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 16:54:35,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 16:54:35,941 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 16:54:35,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:35" (1/1) ... [2018-11-18 16:54:35,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:35" (1/1) ... [2018-11-18 16:54:35,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:35" (1/1) ... [2018-11-18 16:54:35,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:35" (1/1) ... [2018-11-18 16:54:35,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:35" (1/1) ... [2018-11-18 16:54:35,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:35" (1/1) ... [2018-11-18 16:54:35,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:35" (1/1) ... [2018-11-18 16:54:35,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 16:54:35,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 16:54:35,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 16:54:35,960 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 16:54:35,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ffab9e32-c117-4a6d-a2f7-bfacf0ab31b6/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 [2018-11-18 16:54:36,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 16:54:36,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 16:54:36,039 INFO L130 BoogieDeclarations]: Found specification of procedure SqrtR [2018-11-18 16:54:36,039 INFO L138 BoogieDeclarations]: Found implementation of procedure SqrtR [2018-11-18 16:54:36,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 16:54:36,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 16:54:36,040 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 16:54:36,040 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 16:54:36,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 16:54:36,040 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 16:54:44,949 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 16:54:44,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:54:44 BoogieIcfgContainer [2018-11-18 16:54:44,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 16:54:44,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 16:54:44,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 16:54:44,952 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 16:54:44,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:54:35" (1/3) ... [2018-11-18 16:54:44,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb5fe52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:54:44, skipping insertion in model container [2018-11-18 16:54:44,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:35" (2/3) ... [2018-11-18 16:54:44,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb5fe52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:54:44, skipping insertion in model container [2018-11-18 16:54:44,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:54:44" (3/3) ... [2018-11-18 16:54:44,955 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_Newton_pseudoconstant_true-unreach-call.c [2018-11-18 16:54:44,961 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 16:54:44,965 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 16:54:44,975 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 16:54:44,996 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 16:54:44,997 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 16:54:44,997 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 16:54:44,997 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 16:54:44,997 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 16:54:44,997 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 16:54:44,998 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 16:54:44,998 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 16:54:44,998 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 16:54:45,008 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-11-18 16:54:45,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 16:54:45,012 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:54:45,013 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 16:54:45,014 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:54:45,017 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:54:45,017 INFO L82 PathProgramCache]: Analyzing trace with hash 924932034, now seen corresponding path program 1 times [2018-11-18 16:54:45,020 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 16:54:45,020 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ffab9e32-c117-4a6d-a2f7-bfacf0ab31b6/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 [2018-11-18 16:54:45,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:54:46,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:54:46,335 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:54:46,346 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 16:54:46,346 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 16:54:46,368 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:54:46,368 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 16:54:46,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 16:54:46,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 16:54:46,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 16:54:46,383 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2018-11-18 16:54:46,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:54:46,399 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2018-11-18 16:54:46,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 16:54:46,400 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-18 16:54:46,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:54:46,405 INFO L225 Difference]: With dead ends: 56 [2018-11-18 16:54:46,406 INFO L226 Difference]: Without dead ends: 26 [2018-11-18 16:54:46,407 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 16:54:46,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-18 16:54:46,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-11-18 16:54:46,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-18 16:54:46,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2018-11-18 16:54:46,429 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 21 [2018-11-18 16:54:46,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:54:46,430 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2018-11-18 16:54:46,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 16:54:46,430 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2018-11-18 16:54:46,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 16:54:46,431 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:54:46,431 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 16:54:46,431 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:54:46,431 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:54:46,431 INFO L82 PathProgramCache]: Analyzing trace with hash 244023785, now seen corresponding path program 1 times [2018-11-18 16:54:46,432 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 16:54:46,432 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ffab9e32-c117-4a6d-a2f7-bfacf0ab31b6/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 [2018-11-18 16:54:46,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:54:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:54:47,753 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:54:53,273 WARN L180 SmtUtils]: Spent 4.55 s on a formula simplification. DAG size of input: 31 DAG size of output: 9 [2018-11-18 16:54:53,277 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 16:54:53,277 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 16:54:53,307 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:54:53,307 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 16:54:53,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 16:54:53,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 16:54:53,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 16:54:53,309 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 5 states. [2018-11-18 16:54:59,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:54:59,083 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2018-11-18 16:54:59,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 16:54:59,084 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-11-18 16:54:59,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:54:59,085 INFO L225 Difference]: With dead ends: 49 [2018-11-18 16:54:59,085 INFO L226 Difference]: Without dead ends: 29 [2018-11-18 16:54:59,086 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 16:54:59,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-11-18 16:54:59,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-11-18 16:54:59,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-18 16:54:59,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2018-11-18 16:54:59,090 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2018-11-18 16:54:59,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:54:59,090 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2018-11-18 16:54:59,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 16:54:59,090 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2018-11-18 16:54:59,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 16:54:59,091 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:54:59,091 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 16:54:59,091 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:54:59,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:54:59,091 INFO L82 PathProgramCache]: Analyzing trace with hash 502189223, now seen corresponding path program 1 times [2018-11-18 16:54:59,091 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 16:54:59,092 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ffab9e32-c117-4a6d-a2f7-bfacf0ab31b6/bin-2019/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-18 16:54:59,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:55:03,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:55:03,532 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:55:35,012 WARN L180 SmtUtils]: Spent 13.84 s on a formula simplification that was a NOOP. DAG size: 14 [2018-11-18 16:55:37,352 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 [2018-11-18 16:55:39,422 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 [2018-11-18 16:55:41,802 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 [2018-11-18 16:55:43,875 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 [2018-11-18 16:55:46,506 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 [2018-11-18 16:55:48,893 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 [2018-11-18 16:55:51,517 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 [2018-11-18 16:55:54,022 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 [2018-11-18 16:55:56,664 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 [2018-11-18 16:55:59,189 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 [2018-11-18 16:56:19,679 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-11-18 16:56:19,880 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2018-11-18 16:56:19,881 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:429) 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: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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$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 [2018-11-18 16:56:19,883 INFO L168 Benchmark]: Toolchain (without parser) took 104145.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 949.2 MB in the beginning and 1.0 GB in the end (delta: -93.1 MB). Peak memory consumption was 62.6 MB. Max. memory is 11.5 GB. [2018-11-18 16:56:19,883 INFO L168 Benchmark]: CDTParser took 0.16 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 16:56:19,884 INFO L168 Benchmark]: CACSL2BoogieTranslator took 188.39 ms. Allocated memory is still 1.0 GB. Free memory was 949.2 MB in the beginning and 933.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 16:56:19,884 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.29 ms. Allocated memory is still 1.0 GB. Free memory is still 933.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:56:19,884 INFO L168 Benchmark]: Boogie Preprocessor took 18.04 ms. Allocated memory is still 1.0 GB. Free memory is still 933.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:56:19,884 INFO L168 Benchmark]: RCFGBuilder took 8990.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 933.1 MB in the beginning and 1.1 GB in the end (delta: -185.7 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2018-11-18 16:56:19,885 INFO L168 Benchmark]: TraceAbstraction took 94932.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 76.5 MB). Peak memory consumption was 76.5 MB. Max. memory is 11.5 GB. [2018-11-18 16:56:19,887 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 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 188.39 ms. Allocated memory is still 1.0 GB. Free memory was 949.2 MB in the beginning and 933.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 14.29 ms. Allocated memory is still 1.0 GB. Free memory is still 933.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.04 ms. Allocated memory is still 1.0 GB. Free memory is still 933.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 8990.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 933.1 MB in the beginning and 1.1 GB in the end (delta: -185.7 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 94932.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 76.5 MB). Peak memory consumption was 76.5 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...