./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_80644b67-eb76-4f94-ab9d-fc33455e8189/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_80644b67-eb76-4f94-ab9d-fc33455e8189/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_80644b67-eb76-4f94-ab9d-fc33455e8189/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_80644b67-eb76-4f94-ab9d-fc33455e8189/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c -s /tmp/vcloud-vcloud-master/worker/run_dir_80644b67-eb76-4f94-ab9d-fc33455e8189/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_80644b67-eb76-4f94-ab9d-fc33455e8189/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 05e3d6bcb2c03efb7d0e810a8633219e291af284 ................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_80644b67-eb76-4f94-ab9d-fc33455e8189/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_80644b67-eb76-4f94-ab9d-fc33455e8189/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_80644b67-eb76-4f94-ab9d-fc33455e8189/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_80644b67-eb76-4f94-ab9d-fc33455e8189/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c -s /tmp/vcloud-vcloud-master/worker/run_dir_80644b67-eb76-4f94-ab9d-fc33455e8189/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_80644b67-eb76-4f94-ab9d-fc33455e8189/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 05e3d6bcb2c03efb7d0e810a8633219e291af284 ...................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 03:37:55,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 03:37:55,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 03:37:55,819 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 03:37:55,820 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 03:37:55,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 03:37:55,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 03:37:55,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 03:37:55,848 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 03:37:55,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 03:37:55,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 03:37:55,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 03:37:55,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 03:37:55,866 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 03:37:55,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 03:37:55,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 03:37:55,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 03:37:55,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 03:37:55,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 03:37:55,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 03:37:55,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 03:37:55,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 03:37:55,897 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 03:37:55,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 03:37:55,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 03:37:55,903 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 03:37:55,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 03:37:55,905 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 03:37:55,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 03:37:55,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 03:37:55,908 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 03:37:55,909 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 03:37:55,910 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 03:37:55,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 03:37:55,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 03:37:55,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 03:37:55,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 03:37:55,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 03:37:55,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 03:37:55,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 03:37:55,918 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 03:37:55,919 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_80644b67-eb76-4f94-ab9d-fc33455e8189/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 03:37:55,953 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 03:37:55,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 03:37:55,961 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 03:37:55,962 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 03:37:55,962 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 03:37:55,962 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 03:37:55,962 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 03:37:55,963 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 03:37:55,963 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 03:37:55,963 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 03:37:55,964 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 03:37:55,965 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 03:37:55,965 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 03:37:55,966 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 03:37:55,966 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 03:37:55,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 03:37:55,968 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 03:37:55,969 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 03:37:55,969 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 03:37:55,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 03:37:55,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 03:37:55,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 03:37:55,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 03:37:55,970 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 03:37:55,971 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 03:37:55,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 03:37:55,971 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 03:37:55,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 03:37:55,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 03:37:55,975 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 03:37:55,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 03:37:55,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 03:37:55,976 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 03:37:55,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 03:37:55,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 03:37:55,977 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 03:37:55,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 03:37:55,977 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 03:37:55,978 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 03:37:55,978 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 03:37:55,978 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_80644b67-eb76-4f94-ab9d-fc33455e8189/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_80644b67-eb76-4f94-ab9d-fc33455e8189/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05e3d6bcb2c03efb7d0e810a8633219e291af284 [2020-11-30 03:37:56,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 03:37:56,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 03:37:56,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 03:37:56,349 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 03:37:56,350 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 03:37:56,351 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_80644b67-eb76-4f94-ab9d-fc33455e8189/bin/utaipan/../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2020-11-30 03:37:56,457 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_80644b67-eb76-4f94-ab9d-fc33455e8189/bin/utaipan/data/714f43567/12d4279109e64d6f872bcb5be32f8ffa/FLAG02ee5dfbd [2020-11-30 03:37:56,966 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 03:37:56,970 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_80644b67-eb76-4f94-ab9d-fc33455e8189/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2020-11-30 03:37:56,983 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_80644b67-eb76-4f94-ab9d-fc33455e8189/bin/utaipan/data/714f43567/12d4279109e64d6f872bcb5be32f8ffa/FLAG02ee5dfbd [2020-11-30 03:37:57,300 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_80644b67-eb76-4f94-ab9d-fc33455e8189/bin/utaipan/data/714f43567/12d4279109e64d6f872bcb5be32f8ffa [2020-11-30 03:37:57,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 03:37:57,306 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 03:37:57,308 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 03:37:57,308 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 03:37:57,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 03:37:57,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:37:57" (1/1) ... [2020-11-30 03:37:57,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7adcbf90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:37:57, skipping insertion in model container [2020-11-30 03:37:57,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:37:57" (1/1) ... [2020-11-30 03:37:57,326 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 03:37:57,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 03:37:57,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:37:57,583 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 03:37:57,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:37:57,629 INFO L208 MainTranslator]: Completed translation [2020-11-30 03:37:57,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:37:57 WrapperNode [2020-11-30 03:37:57,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 03:37:57,635 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 03:37:57,635 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 03:37:57,635 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 03:37:57,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:37:57" (1/1) ... [2020-11-30 03:37:57,658 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:37:57" (1/1) ... [2020-11-30 03:37:57,685 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 03:37:57,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 03:37:57,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 03:37:57,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 03:37:57,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:37:57" (1/1) ... [2020-11-30 03:37:57,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:37:57" (1/1) ... [2020-11-30 03:37:57,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:37:57" (1/1) ... [2020-11-30 03:37:57,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:37:57" (1/1) ... [2020-11-30 03:37:57,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:37:57" (1/1) ... [2020-11-30 03:37:57,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:37:57" (1/1) ... [2020-11-30 03:37:57,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:37:57" (1/1) ... [2020-11-30 03:37:57,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 03:37:57,717 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 03:37:57,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 03:37:57,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 03:37:57,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:37:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80644b67-eb76-4f94-ab9d-fc33455e8189/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 03:37:57,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 03:37:57,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 03:37:57,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 03:37:57,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 03:37:58,435 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 03:37:58,436 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-30 03:37:58,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:37:58 BoogieIcfgContainer [2020-11-30 03:37:58,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 03:37:58,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 03:37:58,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 03:37:58,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 03:37:58,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 03:37:57" (1/3) ... [2020-11-30 03:37:58,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c36be4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:37:58, skipping insertion in model container [2020-11-30 03:37:58,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:37:57" (2/3) ... [2020-11-30 03:37:58,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c36be4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:37:58, skipping insertion in model container [2020-11-30 03:37:58,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:37:58" (3/3) ... [2020-11-30 03:37:58,450 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_pseudoconstant.c [2020-11-30 03:37:58,463 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 03:37:58,469 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 03:37:58,483 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 03:37:58,507 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 03:37:58,507 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 03:37:58,507 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 03:37:58,508 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 03:37:58,508 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 03:37:58,508 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 03:37:58,508 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 03:37:58,509 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 03:37:58,521 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2020-11-30 03:37:58,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 03:37:58,527 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:37:58,528 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 03:37:58,529 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:37:58,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:37:58,536 INFO L82 PathProgramCache]: Analyzing trace with hash 87263990, now seen corresponding path program 1 times [2020-11-30 03:37:58,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:37:58,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910326205] [2020-11-30 03:37:58,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:37:58,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 03:37:58,682 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 03:37:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 03:37:58,747 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 03:37:58,793 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 03:37:58,794 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 03:37:58,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 03:37:58,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 03:37:58 BoogieIcfgContainer [2020-11-30 03:37:58,831 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 03:37:58,832 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 03:37:58,833 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 03:37:58,833 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 03:37:58,834 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:37:58" (3/4) ... [2020-11-30 03:37:58,839 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 03:37:58,839 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 03:37:58,845 INFO L168 Benchmark]: Toolchain (without parser) took 1535.71 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 55.5 MB in the beginning and 43.4 MB in the end (delta: 12.1 MB). Peak memory consumption was 28.6 MB. Max. memory is 16.1 GB. [2020-11-30 03:37:58,848 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 86.0 MB. Free memory was 44.7 MB in the beginning and 44.7 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:37:58,851 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.75 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 55.5 MB in the beginning and 82.1 MB in the end (delta: -26.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 03:37:58,853 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.59 ms. Allocated memory is still 104.9 MB. Free memory was 82.1 MB in the beginning and 80.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 03:37:58,854 INFO L168 Benchmark]: Boogie Preprocessor took 30.48 ms. Allocated memory is still 104.9 MB. Free memory was 80.6 MB in the beginning and 79.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 03:37:58,855 INFO L168 Benchmark]: RCFGBuilder took 721.12 ms. Allocated memory is still 104.9 MB. Free memory was 79.1 MB in the beginning and 56.9 MB in the end (delta: 22.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-30 03:37:58,857 INFO L168 Benchmark]: TraceAbstraction took 390.97 ms. Allocated memory is still 104.9 MB. Free memory was 56.9 MB in the beginning and 44.0 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 03:37:58,858 INFO L168 Benchmark]: Witness Printer took 7.84 ms. Allocated memory is still 104.9 MB. Free memory was 44.0 MB in the beginning and 43.4 MB in the end (delta: 610.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 03:37:58,870 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 86.0 MB. Free memory was 44.7 MB in the beginning and 44.7 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 325.75 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 55.5 MB in the beginning and 82.1 MB in the end (delta: -26.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.59 ms. Allocated memory is still 104.9 MB. Free memory was 82.1 MB in the beginning and 80.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.48 ms. Allocated memory is still 104.9 MB. Free memory was 80.6 MB in the beginning and 79.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 721.12 ms. Allocated memory is still 104.9 MB. Free memory was 79.1 MB in the beginning and 56.9 MB in the end (delta: 22.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 390.97 ms. Allocated memory is still 104.9 MB. Free memory was 56.9 MB in the beginning and 44.0 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 7.84 ms. Allocated memory is still 104.9 MB. Free memory was 44.0 MB in the beginning and 43.4 MB in the end (delta: 610.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticDOUBLEoperation at line 44, overapproximation of someUnaryDOUBLEoperation at line 32, overapproximation of someBinaryDOUBLEComparisonOperation at line 59. Possible FailurePath: [L22] double _EPS = 1e-6; [L49] double d, dd, r; [L50] double epsilon = 1e-8; [L52] d = 1. VAL [_EPS=1/1000000] [L52] COND TRUE d <= 20. [L54] dd = __VERIFIER_nondet_double() [L18] COND FALSE !(!cond) [L26] double xn, xnp1, residu, lsup, linf; [L27] int i, cond; [L28] COND FALSE !(Input <= 1.0) [L28] xn = 1.0/Input [L29] xnp1 = xn [L30] residu = 2.0*_EPS*(xn+xnp1) [L31] lsup = _EPS * (xn+xnp1) [L32] linf = -lsup [L33] cond = ((residu > lsup) || (residu < linf)) [L34] i = 0 VAL [_EPS=1/1000000] [L35] COND FALSE !(\read(cond)) [L44] return 1.0 / xnp1; [L57] r = SqrtR(dd) [L20] COND TRUE !(cond) VAL [_EPS=1/1000000] [L3] __assert_fail("0", "sqrt_Householder_pseudoconstant.c", 3, "reach_error") VAL [_EPS=1/1000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred 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, 5 NumberOfCodeBlocks, 5 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, ACCELERATED_INTERPOLATION: 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 0.2.0-a4ecdab [2020-11-30 03:38:01,685 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 03:38:01,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 03:38:01,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 03:38:01,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 03:38:01,747 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 03:38:01,750 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 03:38:01,755 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 03:38:01,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 03:38:01,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 03:38:01,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 03:38:01,771 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 03:38:01,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 03:38:01,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 03:38:01,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 03:38:01,781 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 03:38:01,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 03:38:01,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 03:38:01,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 03:38:01,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 03:38:01,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 03:38:01,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 03:38:01,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 03:38:01,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 03:38:01,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 03:38:01,822 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 03:38:01,822 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 03:38:01,823 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 03:38:01,825 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 03:38:01,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 03:38:01,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 03:38:01,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 03:38:01,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 03:38:01,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 03:38:01,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 03:38:01,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 03:38:01,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 03:38:01,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 03:38:01,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 03:38:01,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 03:38:01,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 03:38:01,837 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_80644b67-eb76-4f94-ab9d-fc33455e8189/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-30 03:38:01,882 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 03:38:01,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 03:38:01,885 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 03:38:01,885 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 03:38:01,885 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 03:38:01,885 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 03:38:01,886 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 03:38:01,886 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 03:38:01,886 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 03:38:01,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 03:38:01,889 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 03:38:01,890 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 03:38:01,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 03:38:01,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 03:38:01,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 03:38:01,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 03:38:01,891 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 03:38:01,891 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 03:38:01,891 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 03:38:01,891 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 03:38:01,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 03:38:01,892 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 03:38:01,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 03:38:01,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 03:38:01,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 03:38:01,893 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 03:38:01,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 03:38:01,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 03:38:01,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 03:38:01,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 03:38:01,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 03:38:01,894 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-30 03:38:01,895 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 03:38:01,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 03:38:01,895 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 03:38:01,912 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 03:38:01,912 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_80644b67-eb76-4f94-ab9d-fc33455e8189/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_80644b67-eb76-4f94-ab9d-fc33455e8189/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05e3d6bcb2c03efb7d0e810a8633219e291af284 [2020-11-30 03:38:02,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 03:38:02,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 03:38:02,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 03:38:02,354 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 03:38:02,355 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 03:38:02,356 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_80644b67-eb76-4f94-ab9d-fc33455e8189/bin/utaipan/../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2020-11-30 03:38:02,445 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_80644b67-eb76-4f94-ab9d-fc33455e8189/bin/utaipan/data/0927cac23/a8d59cb551f44a249e5a387bbcb9fdb5/FLAGe3e1dc09b [2020-11-30 03:38:03,061 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 03:38:03,065 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_80644b67-eb76-4f94-ab9d-fc33455e8189/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2020-11-30 03:38:03,074 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_80644b67-eb76-4f94-ab9d-fc33455e8189/bin/utaipan/data/0927cac23/a8d59cb551f44a249e5a387bbcb9fdb5/FLAGe3e1dc09b [2020-11-30 03:38:03,404 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_80644b67-eb76-4f94-ab9d-fc33455e8189/bin/utaipan/data/0927cac23/a8d59cb551f44a249e5a387bbcb9fdb5 [2020-11-30 03:38:03,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 03:38:03,410 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 03:38:03,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 03:38:03,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 03:38:03,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 03:38:03,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:38:03" (1/1) ... [2020-11-30 03:38:03,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@164063d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:38:03, skipping insertion in model container [2020-11-30 03:38:03,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:38:03" (1/1) ... [2020-11-30 03:38:03,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 03:38:03,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 03:38:03,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:38:03,707 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 03:38:03,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:38:03,805 INFO L208 MainTranslator]: Completed translation [2020-11-30 03:38:03,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:38:03 WrapperNode [2020-11-30 03:38:03,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 03:38:03,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 03:38:03,808 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 03:38:03,809 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 03:38:03,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:38:03" (1/1) ... [2020-11-30 03:38:03,857 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:38:03" (1/1) ... [2020-11-30 03:38:03,890 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 03:38:03,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 03:38:03,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 03:38:03,892 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 03:38:03,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:38:03" (1/1) ... [2020-11-30 03:38:03,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:38:03" (1/1) ... [2020-11-30 03:38:03,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:38:03" (1/1) ... [2020-11-30 03:38:03,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:38:03" (1/1) ... [2020-11-30 03:38:03,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:38:03" (1/1) ... [2020-11-30 03:38:03,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:38:03" (1/1) ... [2020-11-30 03:38:03,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:38:03" (1/1) ... [2020-11-30 03:38:03,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 03:38:03,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 03:38:03,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 03:38:03,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 03:38:03,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:38:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80644b67-eb76-4f94-ab9d-fc33455e8189/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 03:38:04,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 03:38:04,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 03:38:04,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 03:38:04,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 03:38:14,016 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 03:38:14,017 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-30 03:38:14,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:38:14 BoogieIcfgContainer [2020-11-30 03:38:14,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 03:38:14,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 03:38:14,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 03:38:14,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 03:38:14,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 03:38:03" (1/3) ... [2020-11-30 03:38:14,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cbbe5c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:38:14, skipping insertion in model container [2020-11-30 03:38:14,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:38:03" (2/3) ... [2020-11-30 03:38:14,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cbbe5c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:38:14, skipping insertion in model container [2020-11-30 03:38:14,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:38:14" (3/3) ... [2020-11-30 03:38:14,028 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_pseudoconstant.c [2020-11-30 03:38:14,041 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 03:38:14,045 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 03:38:14,057 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 03:38:14,098 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 03:38:14,099 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 03:38:14,100 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 03:38:14,100 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 03:38:14,100 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 03:38:14,100 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 03:38:14,100 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 03:38:14,101 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 03:38:14,119 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-30 03:38:14,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 03:38:14,125 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:38:14,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:38:14,127 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:38:14,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:38:14,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1569195288, now seen corresponding path program 1 times [2020-11-30 03:38:14,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:38:14,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667207090] [2020-11-30 03:38:14,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80644b67-eb76-4f94-ab9d-fc33455e8189/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-30 03:38:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:38:16,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 03:38:16,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:38:16,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:38:16,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:38:16,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:38:16,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667207090] [2020-11-30 03:38:16,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:38:16,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 03:38:16,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373240200] [2020-11-30 03:38:16,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 03:38:16,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 03:38:16,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 03:38:16,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 03:38:16,263 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-11-30 03:38:16,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:38:16,278 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-11-30 03:38:16,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 03:38:16,280 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-11-30 03:38:16,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:38:16,290 INFO L225 Difference]: With dead ends: 35 [2020-11-30 03:38:16,290 INFO L226 Difference]: Without dead ends: 14 [2020-11-30 03:38:16,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 03:38:16,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-30 03:38:16,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-30 03:38:16,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-30 03:38:16,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-11-30 03:38:16,330 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2020-11-30 03:38:16,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:38:16,330 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-11-30 03:38:16,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 03:38:16,331 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-11-30 03:38:16,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 03:38:16,331 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:38:16,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:38:16,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 03:38:16,548 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:38:16,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:38:16,549 INFO L82 PathProgramCache]: Analyzing trace with hash -2049407722, now seen corresponding path program 1 times [2020-11-30 03:38:16,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:38:16,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1171641845] [2020-11-30 03:38:16,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80644b67-eb76-4f94-ab9d-fc33455e8189/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-30 03:38:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:38:18,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 03:38:18,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:38:18,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:38:18,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:38:20,932 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 [2020-11-30 03:38:23,034 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 [2020-11-30 03:38:32,363 WARN L193 SmtUtils]: Spent 5.01 s on a formula simplification. DAG size of input: 15 DAG size of output: 11 [2020-11-30 03:38:32,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:38:32,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1171641845] [2020-11-30 03:38:32,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:38:32,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-11-30 03:38:32,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98607929] [2020-11-30 03:38:32,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 03:38:32,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 03:38:32,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 03:38:32,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=27, Unknown=2, NotChecked=10, Total=56 [2020-11-30 03:38:32,372 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 8 states. [2020-11-30 03:38:34,826 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_SqrtR_~xn~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (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)))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0)))) is different from true [2020-11-30 03:39:00,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:39:00,419 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2020-11-30 03:39:00,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 03:39:00,420 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-11-30 03:39:00,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:39:00,421 INFO L225 Difference]: With dead ends: 32 [2020-11-30 03:39:00,421 INFO L226 Difference]: Without dead ends: 20 [2020-11-30 03:39:00,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=19, Invalid=28, Unknown=3, NotChecked=22, Total=72 [2020-11-30 03:39:00,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-30 03:39:00,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-30 03:39:00,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-30 03:39:00,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-11-30 03:39:00,429 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2020-11-30 03:39:00,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:39:00,430 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-11-30 03:39:00,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 03:39:00,430 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-11-30 03:39:00,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 03:39:00,431 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:39:00,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:39:00,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 03:39:00,645 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:39:00,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:39:00,646 INFO L82 PathProgramCache]: Analyzing trace with hash -274400360, now seen corresponding path program 1 times [2020-11-30 03:39:00,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:39:00,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [479322734] [2020-11-30 03:39:00,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80644b67-eb76-4f94-ab9d-fc33455e8189/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-30 03:39:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:39:04,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-30 03:39:04,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:39:05,187 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-11-30 03:39:05,195 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 03:39:05,950 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-11-30 03:39:06,404 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-11-30 03:39:08,836 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0))) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= c_ULTIMATE.start_SqrtR_~xn~0 (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_SqrtR_~Input)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse0 .cse1)) (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub c_currentRoundingMode .cse0 .cse1)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0))))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0)))) is different from false [2020-11-30 03:39:08,873 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-30 03:39:08,876 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-30 03:39:11,940 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= c_currentRoundingMode roundNearestTiesToEven)) (.cse6 (= (_ bv1 32) c_ULTIMATE.start_SqrtR_~cond~0))) (or (and .cse0 (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0))) (.cse5 (fp.div c_currentRoundingMode .cse1 ULTIMATE.start_SqrtR_~Input))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse1 .cse2)) (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse4 (fp.add c_currentRoundingMode .cse5 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse3) .cse4) (fp.mul c_currentRoundingMode .cse3 .cse4))) (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub c_currentRoundingMode .cse1 .cse2)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse1)) (= c_ULTIMATE.start_SqrtR_~xnp1~0 .cse5))))) .cse6) (and .cse0 (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse10 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse12 (fp.div c_currentRoundingMode .cse10 ULTIMATE.start_SqrtR_~Input))) (let ((.cse8 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse9 (fp.add c_currentRoundingMode .cse12 c_ULTIMATE.start_SqrtR_~xnp1~0))) (let ((.cse7 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse8) .cse9)) (.cse11 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (and (not (fp.gt .cse7 (fp.mul c_currentRoundingMode .cse8 .cse9))) (not (fp.lt .cse7 ULTIMATE.start_SqrtR_~linf~0)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse10 .cse11)) (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub c_currentRoundingMode .cse10 .cse11)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse10)) (= c_ULTIMATE.start_SqrtR_~xnp1~0 .cse12))))))) (= (_ bv0 32) c_ULTIMATE.start_SqrtR_~cond~0)) (and .cse0 (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse14 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse15 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0))) (.cse13 (fp.div c_currentRoundingMode .cse14 ULTIMATE.start_SqrtR_~Input))) (and (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 .cse13 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse14 .cse15)) (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub c_currentRoundingMode .cse14 .cse15)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse14)) (= c_ULTIMATE.start_SqrtR_~xnp1~0 .cse13))))) .cse6))) is different from false [2020-11-30 03:39:14,452 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse5 (fp.div c_currentRoundingMode .cse3 ULTIMATE.start_SqrtR_~Input))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse2 (fp.add c_currentRoundingMode .cse5 c_ULTIMATE.start_SqrtR_~xnp1~0))) (let ((.cse0 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse1) .cse2)) (.cse4 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (and (not (fp.gt .cse0 (fp.mul c_currentRoundingMode .cse1 .cse2))) (not (fp.lt .cse0 ULTIMATE.start_SqrtR_~linf~0)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse3 .cse4)) (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub c_currentRoundingMode .cse3 .cse4)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse3)) (= c_ULTIMATE.start_SqrtR_~xnp1~0 .cse5)))))))) is different from false [2020-11-30 03:39:17,332 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (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 ((.cse1 (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 .cse1 .cse1))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0))) (.cse3 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse4) .cse5))) (and (= |c_ULTIMATE.start_SqrtR_#res| (fp.div c_currentRoundingMode .cse0 .cse1)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse0 .cse2)) (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub c_currentRoundingMode .cse0 .cse2)) (not (fp.lt .cse3 ULTIMATE.start_SqrtR_~linf~0)) (not (fp.gt .cse3 (fp.mul c_currentRoundingMode .cse4 .cse5))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0))))))))) is different from false [2020-11-30 03:39:17,345 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 03:39:23,150 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 03:39:41,791 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 ((.cse2 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse3) .cse4)) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (and (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub roundNearestTiesToEven .cse0 .cse1)) (not (fp.lt .cse2 ULTIMATE.start_SqrtR_~linf~0)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)) (not (fp.gt .cse2 (fp.mul roundNearestTiesToEven .cse3 .cse4))) (not (fp.leq (fp.div roundNearestTiesToEven .cse0 .cse5) ((_ to_fp 11 53) roundNearestTiesToEven 5.0))) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse0 .cse1)))))))) .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 ((.cse10 (fp.div roundNearestTiesToEven .cse7 ULTIMATE.start_SqrtR_~Input))) (let ((.cse11 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse12 (fp.add roundNearestTiesToEven .cse10 .cse10))) (let ((.cse9 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse11) .cse12)) (.cse8 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (and (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub roundNearestTiesToEven .cse7 .cse8)) (not (fp.lt .cse9 ULTIMATE.start_SqrtR_~linf~0)) (not (fp.geq (fp.div roundNearestTiesToEven .cse7 .cse10) ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse7)) (not (fp.gt .cse9 (fp.mul roundNearestTiesToEven .cse11 .cse12))) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse7 .cse8)))))))) .cse6) (and (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse13 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse19 (fp.div roundNearestTiesToEven .cse13 ULTIMATE.start_SqrtR_~Input))) (let ((.cse17 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse18 (fp.add roundNearestTiesToEven .cse19 .cse19))) (let ((.cse16 (fp.div roundNearestTiesToEven .cse13 .cse19)) (.cse15 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse17) .cse18)) (.cse14 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (and (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub roundNearestTiesToEven .cse13 .cse14)) (not (fp.lt .cse15 ULTIMATE.start_SqrtR_~linf~0)) (fp.geq .cse16 ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0))) (fp.leq .cse16 ((_ to_fp 11 53) roundNearestTiesToEven 5.0)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse13)) (not (fp.gt .cse15 (fp.mul roundNearestTiesToEven .cse17 .cse18))) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse13 .cse14))))))))))) is different from false [2020-11-30 03:39:57,359 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 ((.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 ((.cse2 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse3) .cse4)) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (and (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub roundNearestTiesToEven .cse0 .cse1)) (not (fp.lt .cse2 ULTIMATE.start_SqrtR_~linf~0)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)) (not (fp.gt .cse2 (fp.mul roundNearestTiesToEven .cse3 .cse4))) (not (fp.leq (fp.div roundNearestTiesToEven .cse0 .cse5) ((_ to_fp 11 53) roundNearestTiesToEven 5.0))) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse0 .cse1)))))))) (exists ((v_prenex_1 (_ FloatingPoint 11 53)) (v_prenex_2 (_ FloatingPoint 11 53))) (let ((.cse9 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse10 (fp.div roundNearestTiesToEven .cse9 v_prenex_1))) (let ((.cse7 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse8 (fp.add roundNearestTiesToEven .cse10 .cse10))) (let ((.cse11 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0))) (.cse6 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse7) .cse8))) (and (not (fp.gt .cse6 (fp.mul roundNearestTiesToEven .cse7 .cse8))) (not (fp.leq v_prenex_1 .cse9)) (not (fp.geq (fp.div roundNearestTiesToEven .cse9 .cse10) ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (fp.geq v_prenex_1 (fp.sub roundNearestTiesToEven .cse9 .cse11)) (fp.leq v_prenex_1 (fp.add roundNearestTiesToEven .cse9 .cse11)) (not (fp.lt .cse6 v_prenex_2))))))))) is different from false [2020-11-30 03:40:00,039 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 ((.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 ((.cse2 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse3) .cse4)) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (and (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub roundNearestTiesToEven .cse0 .cse1)) (not (fp.lt .cse2 ULTIMATE.start_SqrtR_~linf~0)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)) (not (fp.gt .cse2 (fp.mul roundNearestTiesToEven .cse3 .cse4))) (not (fp.leq (fp.div roundNearestTiesToEven .cse0 .cse5) ((_ to_fp 11 53) roundNearestTiesToEven 5.0))) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse0 .cse1)))))))) (exists ((v_prenex_1 (_ FloatingPoint 11 53)) (v_prenex_2 (_ FloatingPoint 11 53))) (let ((.cse9 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse10 (fp.div roundNearestTiesToEven .cse9 v_prenex_1))) (let ((.cse7 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse8 (fp.add roundNearestTiesToEven .cse10 .cse10))) (let ((.cse11 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0))) (.cse6 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse7) .cse8))) (and (not (fp.gt .cse6 (fp.mul roundNearestTiesToEven .cse7 .cse8))) (not (fp.leq v_prenex_1 .cse9)) (not (fp.geq (fp.div roundNearestTiesToEven .cse9 .cse10) ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (fp.geq v_prenex_1 (fp.sub roundNearestTiesToEven .cse9 .cse11)) (fp.leq v_prenex_1 (fp.add roundNearestTiesToEven .cse9 .cse11)) (not (fp.lt .cse6 v_prenex_2))))))))) is different from true [2020-11-30 03:40:00,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:40:00,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:40:02,665 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.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))))) is different from false [2020-11-30 03:40:05,095 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.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))))) is different from true [2020-11-30 03:40:07,612 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xnp1~0))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))))) (not (= (_ bv0 32) c_ULTIMATE.start_SqrtR_~cond~0))) is different from false [2020-11-30 03:40:11,882 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 (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)))) (.cse2 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xn~0))) (and (or .cse0 .cse1 (fp.leq .cse2 ((_ to_fp 11 53) c_currentRoundingMode 5.0))) (or .cse0 .cse1 (fp.geq .cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0)))))) is different from false [2020-11-30 03:40:14,458 WARN L860 $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 (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)))) (.cse2 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xn~0))) (and (or .cse0 .cse1 (fp.leq .cse2 ((_ to_fp 11 53) c_currentRoundingMode 5.0))) (or .cse0 .cse1 (fp.geq .cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0)))))) is different from true [2020-11-30 03:40:17,477 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse7 (fp.div c_currentRoundingMode .cse5 c_ULTIMATE.start_SqrtR_~Input))) (let ((.cse3 (fp.div c_currentRoundingMode .cse5 .cse7)) (.cse0 (let ((.cse6 (fp.add c_currentRoundingMode .cse7 .cse7))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse6) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse6)))) (.cse2 (fp.leq c_ULTIMATE.start_SqrtR_~Input .cse5))) (and (or .cse0 (forall ((v_prenex_3 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (let ((.cse1 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~Input))) (fp.add c_currentRoundingMode .cse1 .cse1))) v_prenex_3)) .cse2 (fp.leq .cse3 ((_ to_fp 11 53) c_currentRoundingMode 5.0))) (or (fp.geq .cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))) (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) (let ((.cse4 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~Input))) (fp.add c_currentRoundingMode .cse4 .cse4))) v_ULTIMATE.start_SqrtR_~linf~0_7)) .cse0 .cse2))))) is different from false [2020-11-30 03:40:20,485 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse7 (fp.div c_currentRoundingMode .cse5 c_ULTIMATE.start_SqrtR_~Input))) (let ((.cse3 (fp.div c_currentRoundingMode .cse5 .cse7)) (.cse0 (let ((.cse6 (fp.add c_currentRoundingMode .cse7 .cse7))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse6) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse6)))) (.cse2 (fp.leq c_ULTIMATE.start_SqrtR_~Input .cse5))) (and (or .cse0 (forall ((v_prenex_3 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (let ((.cse1 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~Input))) (fp.add c_currentRoundingMode .cse1 .cse1))) v_prenex_3)) .cse2 (fp.leq .cse3 ((_ to_fp 11 53) c_currentRoundingMode 5.0))) (or (fp.geq .cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))) (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) (let ((.cse4 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~Input))) (fp.add c_currentRoundingMode .cse4 .cse4))) v_ULTIMATE.start_SqrtR_~linf~0_7)) .cse0 .cse2))))) is different from true [2020-11-30 03:40:23,401 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse7 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse6 (fp.div c_currentRoundingMode .cse7 c_ULTIMATE.start_main_~dd~0))) (let ((.cse0 (fp.leq c_ULTIMATE.start_main_~dd~0 .cse7)) (.cse2 (fp.div c_currentRoundingMode .cse7 .cse6)) (.cse3 (let ((.cse5 (fp.add c_currentRoundingMode .cse6 .cse6))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse5) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse5))))) (and (or .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) (let ((.cse1 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_main_~dd~0))) (fp.add c_currentRoundingMode .cse1 .cse1))) v_ULTIMATE.start_SqrtR_~linf~0_7)) (fp.geq .cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))) .cse3) (or .cse0 (fp.leq .cse2 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (forall ((v_prenex_3 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (let ((.cse4 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_main_~dd~0))) (fp.add c_currentRoundingMode .cse4 .cse4))) v_prenex_3)) .cse3))))) is different from false [2020-11-30 03:40:26,378 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse7 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse6 (fp.div c_currentRoundingMode .cse7 c_ULTIMATE.start_main_~dd~0))) (let ((.cse0 (fp.leq c_ULTIMATE.start_main_~dd~0 .cse7)) (.cse2 (fp.div c_currentRoundingMode .cse7 .cse6)) (.cse3 (let ((.cse5 (fp.add c_currentRoundingMode .cse6 .cse6))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse5) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse5))))) (and (or .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) (let ((.cse1 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_main_~dd~0))) (fp.add c_currentRoundingMode .cse1 .cse1))) v_ULTIMATE.start_SqrtR_~linf~0_7)) (fp.geq .cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))) .cse3) (or .cse0 (fp.leq .cse2 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (forall ((v_prenex_3 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (let ((.cse4 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_main_~dd~0))) (fp.add c_currentRoundingMode .cse4 .cse4))) v_prenex_3)) .cse3))))) is different from true [2020-11-30 03:40:29,433 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse8 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse7 (fp.div c_currentRoundingMode .cse8 c_ULTIMATE.start_main_~dd~0))) (let ((.cse0 (fp.leq c_ULTIMATE.start_main_~dd~0 .cse8)) (.cse1 (fp.div c_currentRoundingMode .cse8 .cse7)) (.cse3 (= (_ bv0 32) c_ULTIMATE.start_assume_abort_if_not_~cond)) (.cse4 (let ((.cse6 (fp.add c_currentRoundingMode .cse7 .cse7))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse6) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse6))))) (and (or .cse0 (fp.leq .cse1 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (forall ((v_prenex_3 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (let ((.cse2 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_main_~dd~0))) (fp.add c_currentRoundingMode .cse2 .cse2))) v_prenex_3)) .cse3 .cse4) (or .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) (let ((.cse5 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_main_~dd~0))) (fp.add c_currentRoundingMode .cse5 .cse5))) v_ULTIMATE.start_SqrtR_~linf~0_7)) (fp.geq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))) .cse3 .cse4))))) is different from false [2020-11-30 03:40:32,447 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse8 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse7 (fp.div c_currentRoundingMode .cse8 c_ULTIMATE.start_main_~dd~0))) (let ((.cse0 (fp.leq c_ULTIMATE.start_main_~dd~0 .cse8)) (.cse1 (fp.div c_currentRoundingMode .cse8 .cse7)) (.cse3 (= (_ bv0 32) c_ULTIMATE.start_assume_abort_if_not_~cond)) (.cse4 (let ((.cse6 (fp.add c_currentRoundingMode .cse7 .cse7))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse6) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse6))))) (and (or .cse0 (fp.leq .cse1 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (forall ((v_prenex_3 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (let ((.cse2 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_main_~dd~0))) (fp.add c_currentRoundingMode .cse2 .cse2))) v_prenex_3)) .cse3 .cse4) (or .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) (let ((.cse5 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_main_~dd~0))) (fp.add c_currentRoundingMode .cse5 .cse5))) v_ULTIMATE.start_SqrtR_~linf~0_7)) (fp.geq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))) .cse3 .cse4))))) is different from true [2020-11-30 03:40:32,453 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 5, 2, 1] term [2020-11-30 03:40:32,454 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 03:40:32,459 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-11-30 03:40:34,753 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~dd~0_8 (_ FloatingPoint 11 53)) (v_prenex_3 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse3 (fp.div c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~dd~0_8))) (let ((.cse2 (fp.add c_currentRoundingMode .cse3 .cse3))) (let ((.cse1 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse2))) (or (fp.leq v_ULTIMATE.start_main_~dd~0_8 .cse0) (not (fp.geq v_ULTIMATE.start_main_~dd~0_8 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~d~0 c_ULTIMATE.start_main_~epsilon~0))) (fp.lt .cse1 v_prenex_3) (not (fp.leq v_ULTIMATE.start_main_~dd~0_8 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~d~0 c_ULTIMATE.start_main_~epsilon~0))) (fp.gt .cse1 (fp.mul c_currentRoundingMode c_~_EPS~0 .cse2)) (fp.leq (fp.div c_currentRoundingMode .cse0 .cse3) ((_ to_fp 11 53) c_currentRoundingMode 5.0)))))))) (forall ((v_ULTIMATE.start_main_~dd~0_8 (_ FloatingPoint 11 53)) (v_ULTIMATE.start_SqrtR_~linf~0_7 (_ FloatingPoint 11 53))) (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse7 (fp.div c_currentRoundingMode .cse4 v_ULTIMATE.start_main_~dd~0_8))) (let ((.cse6 (fp.add c_currentRoundingMode .cse7 .cse7))) (let ((.cse5 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse6))) (or (fp.leq v_ULTIMATE.start_main_~dd~0_8 .cse4) (not (fp.geq v_ULTIMATE.start_main_~dd~0_8 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~d~0 c_ULTIMATE.start_main_~epsilon~0))) (not (fp.leq v_ULTIMATE.start_main_~dd~0_8 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~d~0 c_ULTIMATE.start_main_~epsilon~0))) (fp.gt .cse5 (fp.mul c_currentRoundingMode c_~_EPS~0 .cse6)) (fp.lt .cse5 v_ULTIMATE.start_SqrtR_~linf~0_7) (fp.geq (fp.div c_currentRoundingMode .cse4 .cse7) ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0)))))))))) is different from false [2020-11-30 03:40:36,923 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-11-30 03:40:36,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [479322734] [2020-11-30 03:40:36,925 WARN L332 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") [2020-11-30 03:40:36,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [258220064] [2020-11-30 03:40:36,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80644b67-eb76-4f94-ab9d-fc33455e8189/bin/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-30 03:40:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:40:42,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-30 03:40:42,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:40:42,660 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 03:40:42,661 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken [2020-11-30 03:40:42,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427695181] [2020-11-30 03:40:42,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80644b67-eb76-4f94-ab9d-fc33455e8189/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:41:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:41:16,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-30 03:41:16,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:41:16,031 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@4b43727b [2020-11-30 03:41:16,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:41:16,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-11-30 03:41:16,032 ERROR L205 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2020-11-30 03:41:16,032 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 03:41:16,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3,5 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:41:16,653 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-11-30 03:41:16,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 03:41:16 BoogieIcfgContainer [2020-11-30 03:41:16,654 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 03:41:16,655 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 03:41:16,655 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 03:41:16,655 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 03:41:16,656 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:38:14" (3/4) ... [2020-11-30 03:41:16,660 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 03:41:16,660 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 03:41:16,662 INFO L168 Benchmark]: Toolchain (without parser) took 193251.64 ms. Allocated memory was 69.2 MB in the beginning and 88.1 MB in the end (delta: 18.9 MB). Free memory was 51.5 MB in the beginning and 28.3 MB in the end (delta: 23.2 MB). Peak memory consumption was 41.0 MB. Max. memory is 16.1 GB. [2020-11-30 03:41:16,663 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 69.2 MB. Free memory was 50.8 MB in the beginning and 50.8 MB in the end (delta: 53.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:41:16,664 INFO L168 Benchmark]: CACSL2BoogieTranslator took 391.85 ms. Allocated memory is still 69.2 MB. Free memory was 51.4 MB in the beginning and 52.5 MB in the end (delta: -1.1 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2020-11-30 03:41:16,665 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.94 ms. Allocated memory is still 69.2 MB. Free memory was 52.5 MB in the beginning and 50.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 03:41:16,666 INFO L168 Benchmark]: Boogie Preprocessor took 61.04 ms. Allocated memory is still 69.2 MB. Free memory was 50.9 MB in the beginning and 49.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:41:16,667 INFO L168 Benchmark]: RCFGBuilder took 10065.27 ms. Allocated memory is still 69.2 MB. Free memory was 49.4 MB in the beginning and 35.2 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 03:41:16,668 INFO L168 Benchmark]: TraceAbstraction took 182633.73 ms. Allocated memory was 69.2 MB in the beginning and 88.1 MB in the end (delta: 18.9 MB). Free memory was 35.0 MB in the beginning and 29.0 MB in the end (delta: 6.0 MB). Peak memory consumption was 27.2 MB. Max. memory is 16.1 GB. [2020-11-30 03:41:16,669 INFO L168 Benchmark]: Witness Printer took 5.72 ms. Allocated memory is still 88.1 MB. Free memory was 29.0 MB in the beginning and 28.3 MB in the end (delta: 749.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:41:16,673 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 69.2 MB. Free memory was 50.8 MB in the beginning and 50.8 MB in the end (delta: 53.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 391.85 ms. Allocated memory is still 69.2 MB. Free memory was 51.4 MB in the beginning and 52.5 MB in the end (delta: -1.1 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 81.94 ms. Allocated memory is still 69.2 MB. Free memory was 52.5 MB in the beginning and 50.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.04 ms. Allocated memory is still 69.2 MB. Free memory was 50.9 MB in the beginning and 49.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 10065.27 ms. Allocated memory is still 69.2 MB. Free memory was 49.4 MB in the beginning and 35.2 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 182633.73 ms. Allocated memory was 69.2 MB in the beginning and 88.1 MB in the end (delta: 18.9 MB). Free memory was 35.0 MB in the beginning and 29.0 MB in the end (delta: 6.0 MB). Peak memory consumption was 27.2 MB. Max. memory is 16.1 GB. * Witness Printer took 5.72 ms. Allocated memory is still 88.1 MB. Free memory was 29.0 MB in the beginning and 28.3 MB in the end (delta: 749.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: 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: [L22] double _EPS = 1e-6; [L49] double d, dd, r; [L50] double epsilon = 1e-8; [L52] d = 1. [L52] COND TRUE d <= 20. [L54] dd = __VERIFIER_nondet_double() [L18] COND FALSE !(!cond) [L26] double xn, xnp1, residu, lsup, linf; [L27] int i, cond; [L28] COND FALSE !(Input <= 1.0) [L28] xn = 1.0/Input [L29] xnp1 = xn [L30] residu = 2.0*_EPS*(xn+xnp1) [L31] lsup = _EPS * (xn+xnp1) [L32] linf = -lsup [L33] cond = ((residu > lsup) || (residu < linf)) [L34] i = 0 [L35] COND FALSE !(\read(cond)) [L44] return 1.0 / xnp1; [L57] r = SqrtR(dd) [L20] COND TRUE !(cond) [L3] __assert_fail("0", "sqrt_Householder_pseudoconstant.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 182.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 28.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 31 SDtfs, 2 SDslu, 23 SDs, 0 SdLazy, 21 SolverSat, 0 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 24.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 15.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=2, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 3.7s SatisfiabilityAnalysisTime, 14.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 44 ConstructedInterpolants, 1 QuantifiedInterpolants, 2992 SizeOfPredicates, 8 NumberOfNonLiveVariables, 94 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: 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...