./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0e985f7b-7de8-41c3-a33c-9846a1d8febd/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0e985f7b-7de8-41c3-a33c-9846a1d8febd/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0e985f7b-7de8-41c3-a33c-9846a1d8febd/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0e985f7b-7de8-41c3-a33c-9846a1d8febd/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0e985f7b-7de8-41c3-a33c-9846a1d8febd/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0e985f7b-7de8-41c3-a33c-9846a1d8febd/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f16872e95ceb4c5bb3d43220bb20359b76e5f33c ................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0e985f7b-7de8-41c3-a33c-9846a1d8febd/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0e985f7b-7de8-41c3-a33c-9846a1d8febd/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0e985f7b-7de8-41c3-a33c-9846a1d8febd/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0e985f7b-7de8-41c3-a33c-9846a1d8febd/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0e985f7b-7de8-41c3-a33c-9846a1d8febd/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0e985f7b-7de8-41c3-a33c-9846a1d8febd/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f16872e95ceb4c5bb3d43220bb20359b76e5f33c ............................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 11:39:21,233 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 11:39:21,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 11:39:21,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 11:39:21,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 11:39:21,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 11:39:21,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 11:39:21,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 11:39:21,246 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 11:39:21,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 11:39:21,248 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 11:39:21,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 11:39:21,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 11:39:21,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 11:39:21,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 11:39:21,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 11:39:21,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 11:39:21,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 11:39:21,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 11:39:21,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 11:39:21,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 11:39:21,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 11:39:21,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 11:39:21,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 11:39:21,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 11:39:21,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 11:39:21,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 11:39:21,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 11:39:21,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 11:39:21,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 11:39:21,262 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 11:39:21,262 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 11:39:21,263 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 11:39:21,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 11:39:21,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 11:39:21,264 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 11:39:21,264 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 11:39:21,264 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 11:39:21,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 11:39:21,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 11:39:21,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 11:39:21,266 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0e985f7b-7de8-41c3-a33c-9846a1d8febd/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 11:39:21,275 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 11:39:21,275 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 11:39:21,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 11:39:21,276 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 11:39:21,276 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 11:39:21,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 11:39:21,276 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 11:39:21,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 11:39:21,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 11:39:21,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 11:39:21,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 11:39:21,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 11:39:21,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 11:39:21,277 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 11:39:21,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 11:39:21,277 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 11:39:21,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 11:39:21,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 11:39:21,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 11:39:21,277 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 11:39:21,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 11:39:21,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 11:39:21,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 11:39:21,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 11:39:21,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 11:39:21,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 11:39:21,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 11:39:21,278 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 11:39:21,278 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 11:39:21,278 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/run_dir_0e985f7b-7de8-41c3-a33c-9846a1d8febd/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f16872e95ceb4c5bb3d43220bb20359b76e5f33c [2019-12-07 11:39:21,380 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 11:39:21,390 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 11:39:21,393 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 11:39:21,394 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 11:39:21,395 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 11:39:21,395 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0e985f7b-7de8-41c3-a33c-9846a1d8febd/bin/uautomizer/../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2019-12-07 11:39:21,440 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0e985f7b-7de8-41c3-a33c-9846a1d8febd/bin/uautomizer/data/f6128f46e/da0584e1d51448f588a8231f129d4134/FLAG79b970522 [2019-12-07 11:39:21,877 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 11:39:21,878 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0e985f7b-7de8-41c3-a33c-9846a1d8febd/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2019-12-07 11:39:21,882 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0e985f7b-7de8-41c3-a33c-9846a1d8febd/bin/uautomizer/data/f6128f46e/da0584e1d51448f588a8231f129d4134/FLAG79b970522 [2019-12-07 11:39:21,890 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0e985f7b-7de8-41c3-a33c-9846a1d8febd/bin/uautomizer/data/f6128f46e/da0584e1d51448f588a8231f129d4134 [2019-12-07 11:39:21,892 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 11:39:21,893 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 11:39:21,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 11:39:21,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 11:39:21,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 11:39:21,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:39:21" (1/1) ... [2019-12-07 11:39:21,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13d86038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:21, skipping insertion in model container [2019-12-07 11:39:21,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:39:21" (1/1) ... [2019-12-07 11:39:21,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 11:39:21,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 11:39:22,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:39:22,054 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 11:39:22,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:39:22,076 INFO L208 MainTranslator]: Completed translation [2019-12-07 11:39:22,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:22 WrapperNode [2019-12-07 11:39:22,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 11:39:22,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 11:39:22,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 11:39:22,077 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 11:39:22,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:22" (1/1) ... [2019-12-07 11:39:22,086 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:22" (1/1) ... [2019-12-07 11:39:22,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 11:39:22,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 11:39:22,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 11:39:22,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 11:39:22,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:22" (1/1) ... [2019-12-07 11:39:22,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:22" (1/1) ... [2019-12-07 11:39:22,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:22" (1/1) ... [2019-12-07 11:39:22,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:22" (1/1) ... [2019-12-07 11:39:22,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:22" (1/1) ... [2019-12-07 11:39:22,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:22" (1/1) ... [2019-12-07 11:39:22,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:22" (1/1) ... [2019-12-07 11:39:22,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 11:39:22,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 11:39:22,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 11:39:22,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 11:39:22,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0e985f7b-7de8-41c3-a33c-9846a1d8febd/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 11:39:22,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 11:39:22,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 11:39:22,264 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 11:39:22,264 INFO L287 CfgBuilder]: Removed 10 assume(true) statements. [2019-12-07 11:39:22,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:39:22 BoogieIcfgContainer [2019-12-07 11:39:22,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 11:39:22,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 11:39:22,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 11:39:22,267 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 11:39:22,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 11:39:21" (1/3) ... [2019-12-07 11:39:22,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9c8534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:39:22, skipping insertion in model container [2019-12-07 11:39:22,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:22" (2/3) ... [2019-12-07 11:39:22,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9c8534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:39:22, skipping insertion in model container [2019-12-07 11:39:22,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:39:22" (3/3) ... [2019-12-07 11:39:22,269 INFO L109 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_pseudoconstant.c [2019-12-07 11:39:22,275 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 11:39:22,279 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 11:39:22,287 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 11:39:22,301 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 11:39:22,301 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 11:39:22,301 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 11:39:22,301 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 11:39:22,301 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 11:39:22,301 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 11:39:22,302 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 11:39:22,302 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 11:39:22,310 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-12-07 11:39:22,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 11:39:22,314 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:39:22,314 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:39:22,315 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:39:22,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:39:22,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1706227183, now seen corresponding path program 1 times [2019-12-07 11:39:22,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:39:22,324 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806835394] [2019-12-07 11:39:22,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:39:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:39:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:39:22,414 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:39:22,414 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 11:39:22,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 11:39:22 BoogieIcfgContainer [2019-12-07 11:39:22,430 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 11:39:22,430 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 11:39:22,430 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 11:39:22,431 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 11:39:22,431 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:39:22" (3/4) ... [2019-12-07 11:39:22,433 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 11:39:22,433 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 11:39:22,435 INFO L168 Benchmark]: Toolchain (without parser) took 541.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 948.9 MB in the beginning and 1.1 GB in the end (delta: -135.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:39:22,435 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:39:22,436 INFO L168 Benchmark]: CACSL2BoogieTranslator took 183.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 948.9 MB in the beginning and 1.1 GB in the end (delta: -168.1 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 11:39:22,436 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.15 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. [2019-12-07 11:39:22,436 INFO L168 Benchmark]: Boogie Preprocessor took 14.18 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. [2019-12-07 11:39:22,437 INFO L168 Benchmark]: RCFGBuilder took 151.06 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-12-07 11:39:22,437 INFO L168 Benchmark]: TraceAbstraction took 164.92 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: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 11:39:22,438 INFO L168 Benchmark]: Witness Printer took 2.84 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. [2019-12-07 11:39:22,440 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 183.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 948.9 MB in the beginning and 1.1 GB in the end (delta: -168.1 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.15 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. * Boogie Preprocessor took 14.18 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. * RCFGBuilder took 151.06 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 164.92 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: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Witness Printer took 2.84 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 54, overapproximation of someUnaryDOUBLEoperation at line 27, overapproximation of someBinaryArithmeticDOUBLEoperation at line 39. Possible FailurePath: [L17] double _EPS = 1e-6; VAL [_EPS=1/1000000] [L44] double d, dd, r; [L45] double epsilon = 1e-8; [L47] d = 1. VAL [_EPS=1/1000000] [L47] COND TRUE d <= 20. [L49] dd = __VERIFIER_nondet_double() [L21] double xn, xnp1, residu, lsup, linf; [L22] int i, cond; VAL [_EPS=1/1000000] [L23] COND TRUE Input <= 1.0 [L23] xn = 1.0 VAL [_EPS=1/1000000] [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 [_EPS=1/1000000] [L30] COND FALSE !(\read(cond)) VAL [_EPS=1/1000000] [L39] return 1.0 / xnp1; VAL [_EPS=1/1000000] [L52] r = SqrtR(dd) [L15] COND TRUE !(cond) VAL [_EPS=1/1000000] [L15] __VERIFIER_error() VAL [_EPS=1/1000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: 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 0.1.25-f470102 [2019-12-07 11:39:23,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 11:39:23,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 11:39:23,773 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 11:39:23,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 11:39:23,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 11:39:23,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 11:39:23,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 11:39:23,777 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 11:39:23,778 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 11:39:23,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 11:39:23,779 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 11:39:23,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 11:39:23,780 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 11:39:23,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 11:39:23,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 11:39:23,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 11:39:23,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 11:39:23,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 11:39:23,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 11:39:23,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 11:39:23,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 11:39:23,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 11:39:23,789 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 11:39:23,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 11:39:23,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 11:39:23,791 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 11:39:23,792 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 11:39:23,792 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 11:39:23,793 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 11:39:23,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 11:39:23,794 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 11:39:23,794 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 11:39:23,795 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 11:39:23,795 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 11:39:23,796 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 11:39:23,796 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 11:39:23,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 11:39:23,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 11:39:23,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 11:39:23,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 11:39:23,798 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0e985f7b-7de8-41c3-a33c-9846a1d8febd/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 11:39:23,808 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 11:39:23,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 11:39:23,809 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 11:39:23,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 11:39:23,809 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 11:39:23,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 11:39:23,809 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 11:39:23,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 11:39:23,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 11:39:23,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 11:39:23,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 11:39:23,810 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 11:39:23,810 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 11:39:23,810 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 11:39:23,811 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 11:39:23,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 11:39:23,811 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 11:39:23,811 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 11:39:23,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 11:39:23,811 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 11:39:23,811 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 11:39:23,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 11:39:23,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 11:39:23,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 11:39:23,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 11:39:23,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 11:39:23,812 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 11:39:23,812 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 11:39:23,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 11:39:23,813 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 11:39:23,813 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 11:39:23,813 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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/run_dir_0e985f7b-7de8-41c3-a33c-9846a1d8febd/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f16872e95ceb4c5bb3d43220bb20359b76e5f33c [2019-12-07 11:39:23,985 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 11:39:23,996 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 11:39:23,999 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 11:39:24,000 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 11:39:24,000 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 11:39:24,001 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0e985f7b-7de8-41c3-a33c-9846a1d8febd/bin/uautomizer/../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2019-12-07 11:39:24,045 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0e985f7b-7de8-41c3-a33c-9846a1d8febd/bin/uautomizer/data/2a47ac597/8cd13f2ddf1948a5a67f356aa9e67095/FLAG0241e9d78 [2019-12-07 11:39:24,364 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 11:39:24,365 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0e985f7b-7de8-41c3-a33c-9846a1d8febd/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2019-12-07 11:39:24,369 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0e985f7b-7de8-41c3-a33c-9846a1d8febd/bin/uautomizer/data/2a47ac597/8cd13f2ddf1948a5a67f356aa9e67095/FLAG0241e9d78 [2019-12-07 11:39:24,378 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0e985f7b-7de8-41c3-a33c-9846a1d8febd/bin/uautomizer/data/2a47ac597/8cd13f2ddf1948a5a67f356aa9e67095 [2019-12-07 11:39:24,379 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 11:39:24,380 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 11:39:24,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 11:39:24,381 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 11:39:24,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 11:39:24,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:39:24" (1/1) ... [2019-12-07 11:39:24,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5013611d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:24, skipping insertion in model container [2019-12-07 11:39:24,386 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:39:24" (1/1) ... [2019-12-07 11:39:24,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 11:39:24,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 11:39:24,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:39:24,513 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 11:39:24,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:39:24,542 INFO L208 MainTranslator]: Completed translation [2019-12-07 11:39:24,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:24 WrapperNode [2019-12-07 11:39:24,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 11:39:24,544 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 11:39:24,544 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 11:39:24,544 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 11:39:24,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:24" (1/1) ... [2019-12-07 11:39:24,592 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:24" (1/1) ... [2019-12-07 11:39:24,611 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 11:39:24,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 11:39:24,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 11:39:24,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 11:39:24,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:24" (1/1) ... [2019-12-07 11:39:24,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:24" (1/1) ... [2019-12-07 11:39:24,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:24" (1/1) ... [2019-12-07 11:39:24,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:24" (1/1) ... [2019-12-07 11:39:24,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:24" (1/1) ... [2019-12-07 11:39:24,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:24" (1/1) ... [2019-12-07 11:39:24,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:24" (1/1) ... [2019-12-07 11:39:24,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 11:39:24,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 11:39:24,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 11:39:24,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 11:39:24,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0e985f7b-7de8-41c3-a33c-9846a1d8febd/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 11:39:24,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 11:39:24,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 11:39:31,629 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 11:39:31,629 INFO L287 CfgBuilder]: Removed 10 assume(true) statements. [2019-12-07 11:39:31,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:39:31 BoogieIcfgContainer [2019-12-07 11:39:31,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 11:39:31,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 11:39:31,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 11:39:31,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 11:39:31,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 11:39:24" (1/3) ... [2019-12-07 11:39:31,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a236ccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:39:31, skipping insertion in model container [2019-12-07 11:39:31,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:24" (2/3) ... [2019-12-07 11:39:31,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a236ccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:39:31, skipping insertion in model container [2019-12-07 11:39:31,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:39:31" (3/3) ... [2019-12-07 11:39:31,636 INFO L109 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_pseudoconstant.c [2019-12-07 11:39:31,643 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 11:39:31,647 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 11:39:31,654 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 11:39:31,670 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 11:39:31,670 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 11:39:31,670 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 11:39:31,670 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 11:39:31,670 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 11:39:31,670 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 11:39:31,670 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 11:39:31,671 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 11:39:31,679 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-12-07 11:39:31,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 11:39:31,683 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:39:31,683 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:39:31,684 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:39:31,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:39:31,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1706227183, now seen corresponding path program 1 times [2019-12-07 11:39:31,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 11:39:31,696 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [461191696] [2019-12-07 11:39:31,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0e985f7b-7de8-41c3-a33c-9846a1d8febd/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-12-07 11:39:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:39:33,109 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 11:39:33,114 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:39:33,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:39:33,191 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:39:35,306 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ULTIMATE.start_SqrtR_~linf~0_5 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_5)) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0)))) is different from false [2019-12-07 11:39:37,398 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((v_ULTIMATE.start_SqrtR_~linf~0_5 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_5)) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0)))) is different from true [2019-12-07 11:39:42,910 WARN L192 SmtUtils]: Spent 2.35 s on a formula simplification. DAG size of input: 15 DAG size of output: 11 [2019-12-07 11:39:42,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:39:42,912 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [461191696] [2019-12-07 11:39:42,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:39:42,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-12-07 11:39:42,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921979794] [2019-12-07 11:39:42,917 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 11:39:42,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 11:39:42,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 11:39:42,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=27, Unknown=2, NotChecked=10, Total=56 [2019-12-07 11:39:42,927 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 8 states. [2019-12-07 11:39:45,457 WARN L838 $PredicateComparison]: unable to prove that (and (= ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0)) c_~_EPS~0) (= ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xn~0) (= c_currentRoundingMode roundNearestTiesToEven) (or (forall ((v_ULTIMATE.start_SqrtR_~linf~0_5 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_5)) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))))) is different from false [2019-12-07 11:39:47,557 WARN L860 $PredicateComparison]: unable to prove that (and (= ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0)) c_~_EPS~0) (= ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xn~0) (= c_currentRoundingMode roundNearestTiesToEven) (or (forall ((v_ULTIMATE.start_SqrtR_~linf~0_5 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_5)) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))))) is different from true [2019-12-07 11:40:16,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:40:16,519 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2019-12-07 11:40:16,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 11:40:16,619 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2019-12-07 11:40:16,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:40:16,628 INFO L225 Difference]: With dead ends: 39 [2019-12-07 11:40:16,628 INFO L226 Difference]: Without dead ends: 17 [2019-12-07 11:40:16,630 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=19, Invalid=27, Unknown=4, NotChecked=22, Total=72 [2019-12-07 11:40:16,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-07 11:40:16,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2019-12-07 11:40:16,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 11:40:16,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-12-07 11:40:16,655 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 10 [2019-12-07 11:40:16,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:40:16,656 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-12-07 11:40:16,656 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 11:40:16,656 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-12-07 11:40:16,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 11:40:16,656 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:40:16,656 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:40:16,857 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 11:40:16,857 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:40:16,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:40:16,858 INFO L82 PathProgramCache]: Analyzing trace with hash 68780179, now seen corresponding path program 1 times [2019-12-07 11:40:16,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 11:40:16,859 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364645817] [2019-12-07 11:40:16,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0e985f7b-7de8-41c3-a33c-9846a1d8febd/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-12-07 11:40:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:40:21,651 WARN L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 19 conjunts are in the unsatisfiable core [2019-12-07 11:40:21,652 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:40:22,278 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2019-12-07 11:40:24,626 WARN L838 $PredicateComparison]: unable to prove that (and (= ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0)) c_~_EPS~0) (= c_currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse0 .cse1)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)) (= (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xn~0) (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub c_currentRoundingMode .cse0 .cse1)))))) is different from false [2019-12-07 11:40:26,758 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (= (_ bv1 32) c_ULTIMATE.start_SqrtR_~cond~0)) (.cse0 (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse6 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse7 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse6 .cse7)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse6)) (= c_ULTIMATE.start_SqrtR_~xnp1~0 (fp.div c_currentRoundingMode .cse6 ULTIMATE.start_SqrtR_~Input)) (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub c_currentRoundingMode .cse6 .cse7)))))) (.cse3 (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse5 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse4) .cse5) (fp.mul c_currentRoundingMode .cse4 .cse5)))) (.cse2 (= c_currentRoundingMode roundNearestTiesToEven))) (or (and (exists ((v_prenex_1 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) v_prenex_1)) .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse3 .cse2) (and .cse0 (= (_ bv0 32) c_ULTIMATE.start_SqrtR_~cond~0) (not .cse3) .cse2 (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0)))))) is different from false [2019-12-07 11:40:28,860 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (= (_ bv1 32) c_ULTIMATE.start_SqrtR_~cond~0)) (.cse0 (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse6 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse7 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse6 .cse7)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse6)) (= c_ULTIMATE.start_SqrtR_~xnp1~0 (fp.div c_currentRoundingMode .cse6 ULTIMATE.start_SqrtR_~Input)) (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub c_currentRoundingMode .cse6 .cse7)))))) (.cse3 (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse5 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse4) .cse5) (fp.mul c_currentRoundingMode .cse4 .cse5)))) (.cse2 (= c_currentRoundingMode roundNearestTiesToEven))) (or (and (exists ((v_prenex_1 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) v_prenex_1)) .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse3 .cse2) (and .cse0 (= (_ bv0 32) c_ULTIMATE.start_SqrtR_~cond~0) (not .cse3) .cse2 (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0)))))) is different from true [2019-12-07 11:40:31,226 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse0 .cse1)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)) (= c_ULTIMATE.start_SqrtR_~xnp1~0 (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_SqrtR_~Input)) (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub c_currentRoundingMode .cse0 .cse1))))) (not (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse3 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse2) .cse3) (fp.mul c_currentRoundingMode .cse2 .cse3)))) (= c_currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0)))) is different from false [2019-12-07 11:40:33,329 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse0 .cse1)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)) (= c_ULTIMATE.start_SqrtR_~xnp1~0 (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_SqrtR_~Input)) (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub c_currentRoundingMode .cse0 .cse1))))) (not (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse3 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse2) .cse3) (fp.mul c_currentRoundingMode .cse2 .cse3)))) (= c_currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0)))) is different from true [2019-12-07 11:40:36,042 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse2 (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_SqrtR_~Input))) (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse5 (fp.add c_currentRoundingMode .cse2 .cse2))) (let ((.cse3 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse4) .cse5)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse0 .cse1)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)) (= |c_ULTIMATE.start_SqrtR_#res| (fp.div c_currentRoundingMode .cse0 .cse2)) (not (fp.lt .cse3 ULTIMATE.start_SqrtR_~linf~0)) (not (fp.gt .cse3 (fp.mul c_currentRoundingMode .cse4 .cse5))) (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub c_currentRoundingMode .cse0 .cse1)))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2019-12-07 11:40:36,054 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:40:38,763 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:40:58,383 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse6 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (or (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse5 (fp.div roundNearestTiesToEven .cse0 ULTIMATE.start_SqrtR_~Input))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse4 (fp.add roundNearestTiesToEven .cse5 .cse5))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0))) (.cse2 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse3) .cse4))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse0 .cse1)) (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub roundNearestTiesToEven .cse0 .cse1)) (not (fp.gt .cse2 (fp.mul roundNearestTiesToEven .cse3 .cse4))) (not (fp.lt .cse2 ULTIMATE.start_SqrtR_~linf~0)) (not (fp.geq (fp.div roundNearestTiesToEven .cse0 .cse5) ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)))))))) .cse6) (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse7 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse13 (fp.div roundNearestTiesToEven .cse7 ULTIMATE.start_SqrtR_~Input))) (let ((.cse11 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse12 (fp.add roundNearestTiesToEven .cse13 .cse13))) (let ((.cse8 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0))) (.cse10 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse11) .cse12)) (.cse9 (fp.div roundNearestTiesToEven .cse7 .cse13))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse7 .cse8)) (fp.geq .cse9 ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0))) (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub roundNearestTiesToEven .cse7 .cse8)) (not (fp.gt .cse10 (fp.mul roundNearestTiesToEven .cse11 .cse12))) (not (fp.lt .cse10 ULTIMATE.start_SqrtR_~linf~0)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse7)) (fp.leq .cse9 ((_ to_fp 11 53) roundNearestTiesToEven 5.0)))))))) (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse14 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse16 (fp.div roundNearestTiesToEven .cse14 ULTIMATE.start_SqrtR_~Input))) (let ((.cse18 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse19 (fp.add roundNearestTiesToEven .cse16 .cse16))) (let ((.cse15 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0))) (.cse17 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse18) .cse19))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse14 .cse15)) (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub roundNearestTiesToEven .cse14 .cse15)) (not (fp.leq (fp.div roundNearestTiesToEven .cse14 .cse16) ((_ to_fp 11 53) roundNearestTiesToEven 5.0))) (not (fp.gt .cse17 (fp.mul roundNearestTiesToEven .cse18 .cse19))) (not (fp.lt .cse17 ULTIMATE.start_SqrtR_~linf~0)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse14)))))))) .cse6))) is different from false [2019-12-07 11:41:13,200 WARN L838 $PredicateComparison]: unable to prove that (or (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse2 (fp.div roundNearestTiesToEven .cse0 ULTIMATE.start_SqrtR_~Input))) (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse5 (fp.add roundNearestTiesToEven .cse2 .cse2))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0))) (.cse3 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse4) .cse5))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse0 .cse1)) (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub roundNearestTiesToEven .cse0 .cse1)) (not (fp.leq (fp.div roundNearestTiesToEven .cse0 .cse2) ((_ to_fp 11 53) roundNearestTiesToEven 5.0))) (not (fp.gt .cse3 (fp.mul roundNearestTiesToEven .cse4 .cse5))) (not (fp.lt .cse3 ULTIMATE.start_SqrtR_~linf~0)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)))))))) (exists ((v_prenex_2 (_ FloatingPoint 11 53)) (v_prenex_3 (_ FloatingPoint 11 53))) (let ((.cse7 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse8 (fp.div roundNearestTiesToEven .cse7 v_prenex_2))) (let ((.cse10 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse11 (fp.add roundNearestTiesToEven .cse8 .cse8))) (let ((.cse9 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0))) (.cse6 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse10) .cse11))) (and (not (fp.lt .cse6 v_prenex_3)) (not (fp.geq (fp.div roundNearestTiesToEven .cse7 .cse8) ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (fp.leq v_prenex_2 (fp.add roundNearestTiesToEven .cse7 .cse9)) (fp.geq v_prenex_2 (fp.sub roundNearestTiesToEven .cse7 .cse9)) (not (fp.leq v_prenex_2 .cse7)) (not (fp.gt .cse6 (fp.mul roundNearestTiesToEven .cse10 .cse11)))))))))) is different from false [2019-12-07 11:41:15,813 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse2 (fp.div roundNearestTiesToEven .cse0 ULTIMATE.start_SqrtR_~Input))) (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse5 (fp.add roundNearestTiesToEven .cse2 .cse2))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0))) (.cse3 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse4) .cse5))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse0 .cse1)) (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub roundNearestTiesToEven .cse0 .cse1)) (not (fp.leq (fp.div roundNearestTiesToEven .cse0 .cse2) ((_ to_fp 11 53) roundNearestTiesToEven 5.0))) (not (fp.gt .cse3 (fp.mul roundNearestTiesToEven .cse4 .cse5))) (not (fp.lt .cse3 ULTIMATE.start_SqrtR_~linf~0)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)))))))) (exists ((v_prenex_2 (_ FloatingPoint 11 53)) (v_prenex_3 (_ FloatingPoint 11 53))) (let ((.cse7 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse8 (fp.div roundNearestTiesToEven .cse7 v_prenex_2))) (let ((.cse10 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse11 (fp.add roundNearestTiesToEven .cse8 .cse8))) (let ((.cse9 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0))) (.cse6 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse10) .cse11))) (and (not (fp.lt .cse6 v_prenex_3)) (not (fp.geq (fp.div roundNearestTiesToEven .cse7 .cse8) ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (fp.leq v_prenex_2 (fp.add roundNearestTiesToEven .cse7 .cse9)) (fp.geq v_prenex_2 (fp.sub roundNearestTiesToEven .cse7 .cse9)) (not (fp.leq v_prenex_2 .cse7)) (not (fp.gt .cse6 (fp.mul roundNearestTiesToEven .cse10 .cse11)))))))))) is different from true [2019-12-07 11:41:15,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:15,816 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:41:18,235 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xnp1~0))) (and (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)))) is different from false [2019-12-07 11:41:20,610 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xnp1~0))) (and (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)))) is different from true [2019-12-07 11:41:22,966 WARN L838 $PredicateComparison]: unable to prove that (or (not (= (_ bv0 32) c_ULTIMATE.start_SqrtR_~cond~0)) (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xnp1~0))) (and (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0))))) is different from false [2019-12-07 11:41:25,327 WARN L860 $PredicateComparison]: unable to prove that (or (not (= (_ bv0 32) c_ULTIMATE.start_SqrtR_~cond~0)) (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xnp1~0))) (and (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0))))) is different from true [2019-12-07 11:41:27,773 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (forall ((v_ULTIMATE.start_SqrtR_~linf~0_7 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_7))) (.cse1 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xn~0)) (.cse2 (let ((.cse3 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse3) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse3))))) (and (or .cse0 (fp.geq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))) .cse2) (or .cse0 (fp.leq .cse1 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse2))) is different from false [2019-12-07 11:41:28,578 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-12-07 11:41:28,579 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364645817] [2019-12-07 11:41:28,580 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") [2019-12-07 11:41:28,580 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1993269830] [2019-12-07 11:41:28,580 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0e985f7b-7de8-41c3-a33c-9846a1d8febd/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 11:41:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:41:34,278 WARN L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 14 conjunts are in the unsatisfiable core [2019-12-07 11:41:34,280 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:41:34,288 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:41:34,289 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken [2019-12-07 11:41:34,289 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313041873] [2019-12-07 11:41:34,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0e985f7b-7de8-41c3-a33c-9846a1d8febd/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:42:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:42:48,209 WARN L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 18 conjunts are in the unsatisfiable core [2019-12-07 11:42:48,210 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:42:48,211 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@620dec0d [2019-12-07 11:42:48,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:42:48,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2019-12-07 11:42:48,212 ERROR L206 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2019-12-07 11:42:48,212 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 11:42:48,817 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk,3 mathsat -unsat_core_generation=3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:42:48,833 WARN L229 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2019-12-07 11:42:48,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 11:42:48 BoogieIcfgContainer [2019-12-07 11:42:48,833 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 11:42:48,833 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 11:42:48,833 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 11:42:48,834 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 11:42:48,834 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:39:31" (3/4) ... [2019-12-07 11:42:48,837 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 11:42:48,837 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 11:42:48,838 INFO L168 Benchmark]: Toolchain (without parser) took 204457.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 953.7 MB in the beginning and 1.0 GB in the end (delta: -50.9 MB). Peak memory consumption was 91.2 MB. Max. memory is 11.5 GB. [2019-12-07 11:42:48,838 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:42:48,839 INFO L168 Benchmark]: CACSL2BoogieTranslator took 162.30 ms. Allocated memory is still 1.0 GB. Free memory was 953.7 MB in the beginning and 943.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 11:42:48,839 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 943.0 MB in the beginning and 1.1 GB in the end (delta: -188.1 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. [2019-12-07 11:42:48,840 INFO L168 Benchmark]: Boogie Preprocessor took 19.44 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-12-07 11:42:48,840 INFO L168 Benchmark]: RCFGBuilder took 6999.16 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: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2019-12-07 11:42:48,841 INFO L168 Benchmark]: TraceAbstraction took 197202.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 99.5 MB). Peak memory consumption was 99.5 MB. Max. memory is 11.5 GB. [2019-12-07 11:42:48,841 INFO L168 Benchmark]: Witness Printer took 3.47 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:42:48,843 INFO L335 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 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 162.30 ms. Allocated memory is still 1.0 GB. Free memory was 953.7 MB in the beginning and 943.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 67.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 943.0 MB in the beginning and 1.1 GB in the end (delta: -188.1 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.44 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 6999.16 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: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 197202.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 99.5 MB). Peak memory consumption was 99.5 MB. Max. memory is 11.5 GB. * Witness Printer took 3.47 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] double _EPS = 1e-6; [L44] double d, dd, r; [L45] double epsilon = 1e-8; [L47] d = 1. [L47] COND TRUE d <= 20. [L49] dd = __VERIFIER_nondet_double() [L21] double xn, xnp1, residu, lsup, linf; [L22] int i, cond; [L23] COND FALSE !(Input <= 1.0) [L23] xn = 1.0/Input [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 [L30] COND FALSE !(\read(cond)) [L39] return 1.0 / xnp1; [L52] r = SqrtR(dd) [L15] COND TRUE !(cond) [L15] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Result: UNKNOWN, OverallTime: 197.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 33.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 6 SDslu, 31 SDs, 0 SdLazy, 29 SolverSat, 0 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 27.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 13.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 9.9s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 18 ConstructedInterpolants, 1 QuantifiedInterpolants, 1584 SizeOfPredicates, 8 NumberOfNonLiveVariables, 26 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...