./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_Householder_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_9b16b9aa-f840-412e-b395-932baf022046/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_9b16b9aa-f840-412e-b395-932baf022046/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_9b16b9aa-f840-412e-b395-932baf022046/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_9b16b9aa-f840-412e-b395-932baf022046/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_9b16b9aa-f840-412e-b395-932baf022046/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_9b16b9aa-f840-412e-b395-932baf022046/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 f16872e95ceb4c5bb3d43220bb20359b76e5f33c ................................................................................................................................................................................................................................................................................................................. 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_9b16b9aa-f840-412e-b395-932baf022046/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_9b16b9aa-f840-412e-b395-932baf022046/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_9b16b9aa-f840-412e-b395-932baf022046/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_9b16b9aa-f840-412e-b395-932baf022046/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_9b16b9aa-f840-412e-b395-932baf022046/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_9b16b9aa-f840-412e-b395-932baf022046/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 f16872e95ceb4c5bb3d43220bb20359b76e5f33c .................................................................................................................................................................................................................................................................................................................................................................. 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 16:33:10,874 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 16:33:10,875 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 16:33:10,884 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 16:33:10,884 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 16:33:10,885 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 16:33:10,886 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 16:33:10,887 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 16:33:10,888 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 16:33:10,889 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 16:33:10,889 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 16:33:10,889 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 16:33:10,890 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 16:33:10,891 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 16:33:10,892 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 16:33:10,893 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 16:33:10,893 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 16:33:10,895 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 16:33:10,896 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 16:33:10,897 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 16:33:10,898 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 16:33:10,899 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 16:33:10,900 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 16:33:10,900 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 16:33:10,901 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 16:33:10,901 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 16:33:10,903 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 16:33:10,903 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 16:33:10,904 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 16:33:10,905 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 16:33:10,905 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 16:33:10,905 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 16:33:10,905 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 16:33:10,906 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 16:33:10,907 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 16:33:10,907 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 16:33:10,907 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_9b16b9aa-f840-412e-b395-932baf022046/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 16:33:10,918 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 16:33:10,918 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 16:33:10,919 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 16:33:10,919 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 16:33:10,919 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 16:33:10,919 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 16:33:10,919 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 16:33:10,919 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 16:33:10,919 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 16:33:10,919 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 16:33:10,920 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 16:33:10,920 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 16:33:10,920 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 16:33:10,921 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 16:33:10,921 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 16:33:10,921 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 16:33:10,921 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 16:33:10,921 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 16:33:10,921 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 16:33:10,922 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 16:33:10,922 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 16:33:10,922 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 16:33:10,922 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 16:33:10,922 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 16:33:10,922 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 16:33:10,922 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 16:33:10,922 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 16:33:10,924 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 16:33:10,924 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 16:33:10,924 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:33:10,924 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 16:33:10,924 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 16:33:10,924 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 16:33:10,924 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 16:33:10,925 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 16:33:10,925 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 16:33:10,925 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 16:33:10,925 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_9b16b9aa-f840-412e-b395-932baf022046/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 -> f16872e95ceb4c5bb3d43220bb20359b76e5f33c [2018-11-18 16:33:10,950 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 16:33:10,960 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 16:33:10,963 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 16:33:10,964 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 16:33:10,964 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 16:33:10,965 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_9b16b9aa-f840-412e-b395-932baf022046/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant_true-unreach-call.c [2018-11-18 16:33:11,004 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9b16b9aa-f840-412e-b395-932baf022046/bin-2019/utaipan/data/2ff3e5ed1/c1dc1b08fb154a12859183e1d1265da8/FLAG89c26dd2c [2018-11-18 16:33:11,374 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 16:33:11,374 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_9b16b9aa-f840-412e-b395-932baf022046/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant_true-unreach-call.c [2018-11-18 16:33:11,380 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9b16b9aa-f840-412e-b395-932baf022046/bin-2019/utaipan/data/2ff3e5ed1/c1dc1b08fb154a12859183e1d1265da8/FLAG89c26dd2c [2018-11-18 16:33:11,777 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_9b16b9aa-f840-412e-b395-932baf022046/bin-2019/utaipan/data/2ff3e5ed1/c1dc1b08fb154a12859183e1d1265da8 [2018-11-18 16:33:11,779 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 16:33:11,780 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 16:33:11,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 16:33:11,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 16:33:11,787 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 16:33:11,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:33:11" (1/1) ... [2018-11-18 16:33:11,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38072504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:33:11, skipping insertion in model container [2018-11-18 16:33:11,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:33:11" (1/1) ... [2018-11-18 16:33:11,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 16:33:11,814 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 16:33:11,932 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:33:11,936 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 16:33:11,953 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:33:11,964 INFO L195 MainTranslator]: Completed translation [2018-11-18 16:33:11,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:33:11 WrapperNode [2018-11-18 16:33:11,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 16:33:11,965 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 16:33:11,965 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 16:33:11,965 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 16:33:11,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:33:11" (1/1) ... [2018-11-18 16:33:11,975 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:33:11" (1/1) ... [2018-11-18 16:33:11,980 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 16:33:11,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 16:33:11,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 16:33:11,980 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 16:33:11,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:33:11" (1/1) ... [2018-11-18 16:33:11,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:33:11" (1/1) ... [2018-11-18 16:33:11,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:33:11" (1/1) ... [2018-11-18 16:33:11,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:33:11" (1/1) ... [2018-11-18 16:33:11,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:33:11" (1/1) ... [2018-11-18 16:33:11,997 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:33:11" (1/1) ... [2018-11-18 16:33:11,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:33:11" (1/1) ... [2018-11-18 16:33:11,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 16:33:11,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 16:33:12,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 16:33:12,000 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 16:33:12,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:33:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9b16b9aa-f840-412e-b395-932baf022046/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 16:33:12,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 16:33:12,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 16:33:12,086 INFO L130 BoogieDeclarations]: Found specification of procedure SqrtR [2018-11-18 16:33:12,086 INFO L138 BoogieDeclarations]: Found implementation of procedure SqrtR [2018-11-18 16:33:12,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 16:33:12,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 16:33:12,086 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 16:33:12,086 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 16:33:12,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 16:33:12,086 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 16:33:12,244 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 16:33:12,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:33:12 BoogieIcfgContainer [2018-11-18 16:33:12,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 16:33:12,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 16:33:12,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 16:33:12,248 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 16:33:12,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:33:11" (1/3) ... [2018-11-18 16:33:12,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1914dae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:33:12, skipping insertion in model container [2018-11-18 16:33:12,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:33:11" (2/3) ... [2018-11-18 16:33:12,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1914dae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:33:12, skipping insertion in model container [2018-11-18 16:33:12,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:33:12" (3/3) ... [2018-11-18 16:33:12,252 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_pseudoconstant_true-unreach-call.c [2018-11-18 16:33:12,260 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 16:33:12,266 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 16:33:12,279 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 16:33:12,305 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 16:33:12,305 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 16:33:12,305 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 16:33:12,305 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 16:33:12,305 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 16:33:12,305 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 16:33:12,305 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 16:33:12,306 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 16:33:12,319 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-11-18 16:33:12,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 16:33:12,323 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:33:12,324 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 16:33:12,326 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:33:12,329 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:33:12,329 INFO L82 PathProgramCache]: Analyzing trace with hash 924932034, now seen corresponding path program 1 times [2018-11-18 16:33:12,331 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:33:12,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:33:12,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:33:12,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:33:12,364 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:33:12,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:33:12,421 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 16:33:12,423 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:33:12,423 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 16:33:12,423 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:33:12,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 16:33:12,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 16:33:12,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 16:33:12,436 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2018-11-18 16:33:12,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:33:12,453 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2018-11-18 16:33:12,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 16:33:12,454 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-18 16:33:12,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:33:12,459 INFO L225 Difference]: With dead ends: 56 [2018-11-18 16:33:12,460 INFO L226 Difference]: Without dead ends: 26 [2018-11-18 16:33:12,462 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 16:33:12,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-18 16:33:12,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-11-18 16:33:12,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-18 16:33:12,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2018-11-18 16:33:12,488 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 21 [2018-11-18 16:33:12,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:33:12,488 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2018-11-18 16:33:12,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 16:33:12,488 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2018-11-18 16:33:12,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 16:33:12,489 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:33:12,489 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 16:33:12,489 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:33:12,490 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:33:12,490 INFO L82 PathProgramCache]: Analyzing trace with hash 244023785, now seen corresponding path program 1 times [2018-11-18 16:33:12,490 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:33:12,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:33:12,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:33:12,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:33:12,491 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:33:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:33:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:33:12,530 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 16:33:12,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 04:33:12 BoogieIcfgContainer [2018-11-18 16:33:12,559 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 16:33:12,559 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 16:33:12,559 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 16:33:12,559 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 16:33:12,560 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:33:12" (3/4) ... [2018-11-18 16:33:12,563 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 16:33:12,563 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 16:33:12,563 INFO L168 Benchmark]: Toolchain (without parser) took 784.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 957.1 MB in the beginning and 1.1 GB in the end (delta: -143.4 MB). Peak memory consumption was 7.6 MB. Max. memory is 11.5 GB. [2018-11-18 16:33:12,564 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 977.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:33:12,565 INFO L168 Benchmark]: CACSL2BoogieTranslator took 180.82 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 941.0 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 16:33:12,566 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.50 ms. Allocated memory is still 1.0 GB. Free memory is still 941.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:33:12,566 INFO L168 Benchmark]: Boogie Preprocessor took 19.22 ms. Allocated memory is still 1.0 GB. Free memory is still 941.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:33:12,566 INFO L168 Benchmark]: RCFGBuilder took 244.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -193.1 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-18 16:33:12,567 INFO L168 Benchmark]: TraceAbstraction took 313.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. [2018-11-18 16:33:12,568 INFO L168 Benchmark]: Witness Printer took 3.63 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 16:33:12,570 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 977.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 180.82 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 941.0 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 14.50 ms. Allocated memory is still 1.0 GB. Free memory is still 941.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.22 ms. Allocated memory is still 1.0 GB. Free memory is still 941.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 244.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -193.1 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 313.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. * Witness Printer took 3.63 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: 15]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 28, overapproximation of someUnaryDOUBLEoperation at line 27, overapproximation of someBinaryArithmeticDOUBLEoperation at line 39. Possible FailurePath: [L17] double _EPS = 1e-6; VAL [\old(_EPS)=3, _EPS=1/1000000] [L44] double d, dd, r; [L45] double epsilon = 1e-8; [L47] d = 1. VAL [_EPS=1/1000000, d=1, epsilon=1/100000000] [L47] COND TRUE d <= 20. [L49] dd = __VERIFIER_nondet_double() [L52] CALL, EXPR SqrtR(dd) VAL [\old(Input)=2, _EPS=1/1000000] [L21] double xn, xnp1, residu, lsup, linf; [L22] int i, cond; VAL [\old(Input)=2, _EPS=1/1000000, Input=2] [L23] COND TRUE Input <= 1.0 [L23] xn = 1.0 VAL [\old(Input)=2, _EPS=1/1000000, Input=2, xn=1] [L24] xnp1 = xn [L25] residu = 2.0*_EPS*(xn+xnp1) [L26] lsup = _EPS * (xn+xnp1) [L27] linf = -lsup [L28] cond = ((residu > lsup) || (residu < linf)) [L29] i = 0 VAL [\old(Input)=2, _EPS=1/1000000, cond=0, i=0, Input=2, xn=1, xn=1] [L30] COND FALSE !(\read(cond)) VAL [\old(Input)=2, _EPS=1/1000000, cond=0, i=0, Input=2, xn=1, xn=1] [L39] RET return 1.0 / xnp1; VAL [\old(Input)=2, _EPS=1/1000000, cond=0, i=0, Input=2, xn=1, xn=1] [L52] EXPR SqrtR(dd) VAL [_EPS=1/1000000, d=2, d=1, epsilon=1/100000000, SqrtR(dd)=4] [L52] r = SqrtR(dd) [L54] CALL __VERIFIER_assert(r >= 0.9 && r <= 5.) VAL [\old(cond)=0, _EPS=1/1000000] [L15] COND TRUE !(cond) VAL [\old(cond)=0, _EPS=1/1000000, cond=0] [L15] __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 16:33:14,270 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 16:33:14,271 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 16:33:14,280 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 16:33:14,280 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 16:33:14,281 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 16:33:14,282 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 16:33:14,284 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 16:33:14,284 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 16:33:14,285 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 16:33:14,285 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 16:33:14,286 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 16:33:14,287 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 16:33:14,287 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 16:33:14,288 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 16:33:14,289 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 16:33:14,289 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 16:33:14,291 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 16:33:14,292 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 16:33:14,294 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 16:33:14,295 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 16:33:14,296 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 16:33:14,297 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 16:33:14,297 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 16:33:14,298 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 16:33:14,299 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 16:33:14,299 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 16:33:14,300 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 16:33:14,300 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 16:33:14,301 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 16:33:14,301 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 16:33:14,302 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 16:33:14,302 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 16:33:14,302 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 16:33:14,303 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 16:33:14,303 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 16:33:14,303 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_9b16b9aa-f840-412e-b395-932baf022046/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-18 16:33:14,313 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 16:33:14,314 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 16:33:14,314 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 16:33:14,315 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 16:33:14,315 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 16:33:14,315 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 16:33:14,315 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 16:33:14,315 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 16:33:14,315 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 16:33:14,315 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 16:33:14,316 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 16:33:14,316 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 16:33:14,316 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 16:33:14,316 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 16:33:14,316 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 16:33:14,316 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 16:33:14,317 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 16:33:14,317 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 16:33:14,317 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 16:33:14,317 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 16:33:14,317 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 16:33:14,317 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 16:33:14,317 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 16:33:14,317 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 16:33:14,318 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 16:33:14,318 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 16:33:14,318 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 16:33:14,318 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:33:14,318 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 16:33:14,318 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 16:33:14,318 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 16:33:14,318 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 16:33:14,319 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 16:33:14,319 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 16:33:14,319 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 16:33:14,319 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_9b16b9aa-f840-412e-b395-932baf022046/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 -> f16872e95ceb4c5bb3d43220bb20359b76e5f33c [2018-11-18 16:33:14,349 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 16:33:14,358 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 16:33:14,361 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 16:33:14,362 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 16:33:14,363 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 16:33:14,363 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_9b16b9aa-f840-412e-b395-932baf022046/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant_true-unreach-call.c [2018-11-18 16:33:14,409 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9b16b9aa-f840-412e-b395-932baf022046/bin-2019/utaipan/data/2d419ee1a/f250985ed82344099678523fcd9510ef/FLAGc7dd70cb9 [2018-11-18 16:33:14,761 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 16:33:14,761 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_9b16b9aa-f840-412e-b395-932baf022046/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant_true-unreach-call.c [2018-11-18 16:33:14,766 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9b16b9aa-f840-412e-b395-932baf022046/bin-2019/utaipan/data/2d419ee1a/f250985ed82344099678523fcd9510ef/FLAGc7dd70cb9 [2018-11-18 16:33:14,775 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_9b16b9aa-f840-412e-b395-932baf022046/bin-2019/utaipan/data/2d419ee1a/f250985ed82344099678523fcd9510ef [2018-11-18 16:33:14,778 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 16:33:14,779 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 16:33:14,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 16:33:14,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 16:33:14,788 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 16:33:14,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:33:14" (1/1) ... [2018-11-18 16:33:14,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15007527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:33:14, skipping insertion in model container [2018-11-18 16:33:14,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:33:14" (1/1) ... [2018-11-18 16:33:14,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 16:33:14,813 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 16:33:14,955 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:33:14,960 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 16:33:14,979 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:33:14,990 INFO L195 MainTranslator]: Completed translation [2018-11-18 16:33:14,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:33:14 WrapperNode [2018-11-18 16:33:14,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 16:33:14,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 16:33:14,992 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 16:33:14,992 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 16:33:14,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:33:14" (1/1) ... [2018-11-18 16:33:15,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:33:14" (1/1) ... [2018-11-18 16:33:15,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 16:33:15,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 16:33:15,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 16:33:15,010 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 16:33:15,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:33:14" (1/1) ... [2018-11-18 16:33:15,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:33:14" (1/1) ... [2018-11-18 16:33:15,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:33:14" (1/1) ... [2018-11-18 16:33:15,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:33:14" (1/1) ... [2018-11-18 16:33:15,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:33:14" (1/1) ... [2018-11-18 16:33:15,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:33:14" (1/1) ... [2018-11-18 16:33:15,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:33:14" (1/1) ... [2018-11-18 16:33:15,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 16:33:15,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 16:33:15,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 16:33:15,035 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 16:33:15,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:33:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9b16b9aa-f840-412e-b395-932baf022046/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 16:33:15,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 16:33:15,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 16:33:15,168 INFO L130 BoogieDeclarations]: Found specification of procedure SqrtR [2018-11-18 16:33:15,168 INFO L138 BoogieDeclarations]: Found implementation of procedure SqrtR [2018-11-18 16:33:15,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 16:33:15,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 16:33:15,169 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 16:33:15,169 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 16:33:15,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 16:33:15,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 16:33:23,667 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 16:33:23,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:33:23 BoogieIcfgContainer [2018-11-18 16:33:23,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 16:33:23,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 16:33:23,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 16:33:23,671 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 16:33:23,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:33:14" (1/3) ... [2018-11-18 16:33:23,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd7d6a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:33:23, skipping insertion in model container [2018-11-18 16:33:23,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:33:14" (2/3) ... [2018-11-18 16:33:23,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd7d6a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:33:23, skipping insertion in model container [2018-11-18 16:33:23,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:33:23" (3/3) ... [2018-11-18 16:33:23,674 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_pseudoconstant_true-unreach-call.c [2018-11-18 16:33:23,681 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 16:33:23,691 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 16:33:23,700 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 16:33:23,722 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 16:33:23,723 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 16:33:23,723 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 16:33:23,723 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 16:33:23,723 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 16:33:23,723 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 16:33:23,723 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 16:33:23,723 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 16:33:23,724 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 16:33:23,736 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-11-18 16:33:23,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 16:33:23,740 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:33:23,741 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:33:23,742 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:33:23,746 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:33:23,746 INFO L82 PathProgramCache]: Analyzing trace with hash 924932034, now seen corresponding path program 1 times [2018-11-18 16:33:23,749 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 16:33:23,749 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9b16b9aa-f840-412e-b395-932baf022046/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 16:33:23,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:33:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:33:25,244 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:33:25,261 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 16:33:25,262 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 16:33:25,295 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:33:25,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 16:33:25,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 16:33:25,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 16:33:25,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 16:33:25,312 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2018-11-18 16:33:25,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:33:25,330 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2018-11-18 16:33:25,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 16:33:25,331 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-18 16:33:25,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:33:25,338 INFO L225 Difference]: With dead ends: 56 [2018-11-18 16:33:25,338 INFO L226 Difference]: Without dead ends: 26 [2018-11-18 16:33:25,341 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 16:33:25,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-18 16:33:25,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-11-18 16:33:25,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-18 16:33:25,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2018-11-18 16:33:25,372 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 21 [2018-11-18 16:33:25,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:33:25,372 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2018-11-18 16:33:25,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 16:33:25,372 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2018-11-18 16:33:25,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 16:33:25,373 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:33:25,373 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 16:33:25,373 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:33:25,374 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:33:25,374 INFO L82 PathProgramCache]: Analyzing trace with hash 244023785, now seen corresponding path program 1 times [2018-11-18 16:33:25,375 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 16:33:25,375 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9b16b9aa-f840-412e-b395-932baf022046/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 16:33:25,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:33:26,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:33:26,943 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:33:35,003 WARN L180 SmtUtils]: Spent 6.03 s on a formula simplification. DAG size of input: 31 DAG size of output: 9 [2018-11-18 16:33:35,007 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 16:33:35,018 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 16:33:35,045 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:33:35,045 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 16:33:35,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 16:33:35,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 16:33:35,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 16:33:35,047 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 5 states. [2018-11-18 16:33:41,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:33:41,210 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2018-11-18 16:33:41,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 16:33:41,211 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-11-18 16:33:41,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:33:41,212 INFO L225 Difference]: With dead ends: 49 [2018-11-18 16:33:41,212 INFO L226 Difference]: Without dead ends: 29 [2018-11-18 16:33:41,213 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 16:33:41,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-11-18 16:33:41,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-11-18 16:33:41,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-18 16:33:41,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2018-11-18 16:33:41,220 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2018-11-18 16:33:41,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:33:41,220 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2018-11-18 16:33:41,220 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 16:33:41,220 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2018-11-18 16:33:41,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 16:33:41,221 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:33:41,221 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:33:41,222 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:33:41,222 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:33:41,222 INFO L82 PathProgramCache]: Analyzing trace with hash 502189223, now seen corresponding path program 1 times [2018-11-18 16:33:41,222 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 16:33:41,222 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9b16b9aa-f840-412e-b395-932baf022046/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 16:33:41,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:33:45,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:33:45,683 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:33:48,101 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (= (fp.div roundNearestTiesToEven .cse0 |c_SqrtR_#in~Input|) c_SqrtR_~xn~0) (not (fp.leq |c_SqrtR_#in~Input| .cse0)) (= c_~_EPS~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))))) is different from false [2018-11-18 16:33:50,348 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (= (fp.div roundNearestTiesToEven .cse0 |c_SqrtR_#in~Input|) c_SqrtR_~xn~0) (not (fp.leq |c_SqrtR_#in~Input| .cse0)) (= c_~_EPS~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))))) is different from true [2018-11-18 16:33:54,191 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 16:33:56,545 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 16:33:58,615 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 16:34:01,317 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 16:34:03,717 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 16:34:06,408 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 16:34:09,016 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 16:34:11,775 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 16:34:14,408 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 16:34:37,611 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse7 (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) (or (and (exists ((v_prenex_2 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse4 (fp.div roundNearestTiesToEven .cse2 v_prenex_2))) (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)) (fp.leq v_prenex_2 (fp.add roundNearestTiesToEven .cse2 .cse3)) (not (fp.leq (fp.div roundNearestTiesToEven .cse2 .cse4) ((_ to_fp 11 53) roundNearestTiesToEven 5.0))) (not (fp.leq v_prenex_2 .cse2)) (not (fp.lt .cse0 (fp.neg .cse1))) (fp.geq v_prenex_2 (fp.sub roundNearestTiesToEven .cse2 .cse3)))))))) .cse7) (and (exists ((v_prenex_4 (_ FloatingPoint 11 53))) (let ((.cse9 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse13 (fp.div roundNearestTiesToEven .cse9 v_prenex_4))) (let ((.cse14 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse15 (fp.add roundNearestTiesToEven .cse13 .cse13))) (let ((.cse10 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0))) (.cse11 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse14) .cse15)) (.cse12 (fp.mul roundNearestTiesToEven .cse14 .cse15)) (.cse8 (fp.div roundNearestTiesToEven .cse9 .cse13))) (and (fp.geq .cse8 ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0))) (fp.geq v_prenex_4 (fp.sub roundNearestTiesToEven .cse9 .cse10)) (not (fp.lt .cse11 (fp.neg .cse12))) (fp.leq v_prenex_4 (fp.add roundNearestTiesToEven .cse9 .cse10)) (not (fp.gt .cse11 .cse12)) (fp.leq .cse8 ((_ to_fp 11 53) roundNearestTiesToEven 5.0)) (not (fp.leq v_prenex_4 .cse9)))))))) (= (bvadd |c___VERIFIER_assert_#in~cond| (_ bv4294967295 32)) (_ bv0 32))) (and .cse7 (exists ((main_~dd~0 (_ FloatingPoint 11 53))) (let ((.cse18 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse20 (fp.div roundNearestTiesToEven .cse18 main_~dd~0))) (let ((.cse21 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse22 (fp.add roundNearestTiesToEven .cse20 .cse20))) (let ((.cse16 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse21) .cse22)) (.cse17 (fp.mul roundNearestTiesToEven .cse21 .cse22)) (.cse19 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (and (not (fp.gt .cse16 .cse17)) (not (fp.leq main_~dd~0 .cse18)) (fp.leq main_~dd~0 (fp.add roundNearestTiesToEven .cse18 .cse19)) (not (fp.lt .cse16 (fp.neg .cse17))) (fp.geq main_~dd~0 (fp.sub roundNearestTiesToEven .cse18 .cse19)) (not (fp.geq (fp.div roundNearestTiesToEven .cse18 .cse20) ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0))))))))))))) is different from false [2018-11-18 16:34:52,544 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-11-18 16:34:52,745 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2018-11-18 16:34:52,746 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.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.pqe.XnfUpd.isSuperfluousConjunction(XnfUpd.java:195) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.pqe.XnfUpd.tryToEliminate(XnfUpd.java:93) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.applyEliminationInner(PartialQuantifierElimination.java:507) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.applyEliminationOuter(PartialQuantifierElimination.java:475) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.applyUnconnectedParameterDeletion(PartialQuantifierElimination.java:420) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:286) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) 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) ... 41 more [2018-11-18 16:34:52,749 INFO L168 Benchmark]: Toolchain (without parser) took 97971.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 951.9 MB in the beginning and 1.1 GB in the end (delta: -100.1 MB). Peak memory consumption was 56.1 MB. Max. memory is 11.5 GB. [2018-11-18 16:34:52,751 INFO L168 Benchmark]: CDTParser took 0.14 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 16:34:52,751 INFO L168 Benchmark]: CACSL2BoogieTranslator took 211.92 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 935.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 16:34:52,752 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.73 ms. Allocated memory is still 1.0 GB. Free memory is still 935.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:34:52,752 INFO L168 Benchmark]: Boogie Preprocessor took 25.53 ms. Allocated memory is still 1.0 GB. Free memory is still 935.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:34:52,753 INFO L168 Benchmark]: RCFGBuilder took 8633.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 935.8 MB in the beginning and 1.1 GB in the end (delta: -188.6 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. [2018-11-18 16:34:52,753 INFO L168 Benchmark]: TraceAbstraction took 89080.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 72.4 MB). Peak memory consumption was 72.4 MB. Max. memory is 11.5 GB. [2018-11-18 16:34:52,757 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 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 211.92 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 935.8 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 17.73 ms. Allocated memory is still 1.0 GB. Free memory is still 935.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.53 ms. Allocated memory is still 1.0 GB. Free memory is still 935.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 8633.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 935.8 MB in the beginning and 1.1 GB in the end (delta: -188.6 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 89080.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 72.4 MB). Peak memory consumption was 72.4 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...