./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_Newton_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_c73f7db8-976c-4756-9789-72e39c62a010/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c73f7db8-976c-4756-9789-72e39c62a010/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c73f7db8-976c-4756-9789-72e39c62a010/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c73f7db8-976c-4756-9789-72e39c62a010/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c73f7db8-976c-4756-9789-72e39c62a010/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c73f7db8-976c-4756-9789-72e39c62a010/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 a9874b894e580352626d8ebc271850c0b42d4635 ................................................................................................................................................................................................................................................................... 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_c73f7db8-976c-4756-9789-72e39c62a010/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c73f7db8-976c-4756-9789-72e39c62a010/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c73f7db8-976c-4756-9789-72e39c62a010/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c73f7db8-976c-4756-9789-72e39c62a010/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c73f7db8-976c-4756-9789-72e39c62a010/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c73f7db8-976c-4756-9789-72e39c62a010/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 a9874b894e580352626d8ebc271850c0b42d4635 ............................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:09:00,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:09:00,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:09:00,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:09:00,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:09:00,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:09:00,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:09:00,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:09:00,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:09:00,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:09:00,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:09:00,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:09:00,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:09:00,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:09:00,892 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:09:00,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:09:00,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:09:00,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:09:00,904 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:09:00,914 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:09:00,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:09:00,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:09:00,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:09:00,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:09:00,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:09:00,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:09:00,936 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:09:00,938 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:09:00,939 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:09:00,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:09:00,941 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:09:00,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:09:00,945 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:09:00,946 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:09:00,948 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:09:00,948 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:09:00,949 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:09:00,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:09:00,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:09:00,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:09:00,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:09:00,955 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c73f7db8-976c-4756-9789-72e39c62a010/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:09:01,008 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:09:01,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:09:01,011 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:09:01,011 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:09:01,011 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:09:01,012 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:09:01,012 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:09:01,012 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:09:01,013 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:09:01,013 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:09:01,014 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:09:01,015 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:09:01,015 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:09:01,015 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:09:01,016 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:09:01,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:09:01,017 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:09:01,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:09:01,017 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:09:01,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:09:01,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:09:01,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:09:01,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:09:01,019 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:09:01,019 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:09:01,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:09:01,020 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:09:01,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:09:01,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:09:01,022 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:09:01,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:09:01,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:09:01,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:09:01,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:09:01,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:09:01,025 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:09:01,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:09:01,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:09:01,025 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:09:01,026 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:09:01,026 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_c73f7db8-976c-4756-9789-72e39c62a010/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c73f7db8-976c-4756-9789-72e39c62a010/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9874b894e580352626d8ebc271850c0b42d4635 [2020-11-30 02:09:01,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:09:01,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:09:01,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:09:01,442 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:09:01,443 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:09:01,445 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c73f7db8-976c-4756-9789-72e39c62a010/bin/utaipan/../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c [2020-11-30 02:09:01,531 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c73f7db8-976c-4756-9789-72e39c62a010/bin/utaipan/data/2dcdc0266/d9e11144d03f49c79d17f4840b314573/FLAG8934b2a4d [2020-11-30 02:09:02,212 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:09:02,214 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c73f7db8-976c-4756-9789-72e39c62a010/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c [2020-11-30 02:09:02,230 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c73f7db8-976c-4756-9789-72e39c62a010/bin/utaipan/data/2dcdc0266/d9e11144d03f49c79d17f4840b314573/FLAG8934b2a4d [2020-11-30 02:09:02,540 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c73f7db8-976c-4756-9789-72e39c62a010/bin/utaipan/data/2dcdc0266/d9e11144d03f49c79d17f4840b314573 [2020-11-30 02:09:02,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:09:02,554 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:09:02,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:09:02,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:09:02,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:09:02,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:09:02" (1/1) ... [2020-11-30 02:09:02,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59511343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:02, skipping insertion in model container [2020-11-30 02:09:02,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:09:02" (1/1) ... [2020-11-30 02:09:02,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:09:02,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:09:02,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:09:02,971 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:09:03,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:09:03,040 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:09:03,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:03 WrapperNode [2020-11-30 02:09:03,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:09:03,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:09:03,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:09:03,043 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:09:03,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:03" (1/1) ... [2020-11-30 02:09:03,064 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:03" (1/1) ... [2020-11-30 02:09:03,089 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:09:03,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:09:03,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:09:03,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:09:03,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:03" (1/1) ... [2020-11-30 02:09:03,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:03" (1/1) ... [2020-11-30 02:09:03,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:03" (1/1) ... [2020-11-30 02:09:03,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:03" (1/1) ... [2020-11-30 02:09:03,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:03" (1/1) ... [2020-11-30 02:09:03,116 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:03" (1/1) ... [2020-11-30 02:09:03,118 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:03" (1/1) ... [2020-11-30 02:09:03,121 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:09:03,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:09:03,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:09:03,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:09:03,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c73f7db8-976c-4756-9789-72e39c62a010/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 02:09:03,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:09:03,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:09:03,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:09:03,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:09:04,003 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:09:04,004 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-30 02:09:04,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:09:04 BoogieIcfgContainer [2020-11-30 02:09:04,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:09:04,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:09:04,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:09:04,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:09:04,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:09:02" (1/3) ... [2020-11-30 02:09:04,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4149e1d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:09:04, skipping insertion in model container [2020-11-30 02:09:04,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:03" (2/3) ... [2020-11-30 02:09:04,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4149e1d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:09:04, skipping insertion in model container [2020-11-30 02:09:04,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:09:04" (3/3) ... [2020-11-30 02:09:04,018 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Newton_pseudoconstant.c [2020-11-30 02:09:04,031 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:09:04,036 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 02:09:04,056 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 02:09:04,098 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:09:04,100 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:09:04,100 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:09:04,101 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:09:04,101 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:09:04,101 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:09:04,101 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:09:04,102 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:09:04,118 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2020-11-30 02:09:04,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 02:09:04,125 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:09:04,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 02:09:04,127 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:09:04,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:09:04,134 INFO L82 PathProgramCache]: Analyzing trace with hash 87204408, now seen corresponding path program 1 times [2020-11-30 02:09:04,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:09:04,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866597029] [2020-11-30 02:09:04,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:09:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:09:04,326 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:09:04,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:09:04,394 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:09:04,429 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 02:09:04,430 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 02:09:04,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:09:04,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:09:04 BoogieIcfgContainer [2020-11-30 02:09:04,478 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:09:04,481 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:09:04,481 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:09:04,482 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:09:04,482 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:09:04" (3/4) ... [2020-11-30 02:09:04,489 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 02:09:04,489 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:09:04,493 INFO L168 Benchmark]: Toolchain (without parser) took 1935.61 ms. Allocated memory is still 109.1 MB. Free memory was 78.9 MB in the beginning and 47.3 MB in the end (delta: 31.6 MB). Peak memory consumption was 30.9 MB. Max. memory is 16.1 GB. [2020-11-30 02:09:04,496 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 79.7 MB. Free memory was 51.4 MB in the beginning and 51.4 MB in the end (delta: 28.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:09:04,498 INFO L168 Benchmark]: CACSL2BoogieTranslator took 478.78 ms. Allocated memory is still 109.1 MB. Free memory was 78.9 MB in the beginning and 86.0 MB in the end (delta: -7.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:09:04,501 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.62 ms. Allocated memory is still 109.1 MB. Free memory was 86.0 MB in the beginning and 83.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:09:04,502 INFO L168 Benchmark]: Boogie Preprocessor took 31.20 ms. Allocated memory is still 109.1 MB. Free memory was 83.9 MB in the beginning and 83.0 MB in the end (delta: 935.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:09:04,503 INFO L168 Benchmark]: RCFGBuilder took 884.16 ms. Allocated memory is still 109.1 MB. Free memory was 83.0 MB in the beginning and 60.7 MB in the end (delta: 22.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-30 02:09:04,504 INFO L168 Benchmark]: TraceAbstraction took 470.36 ms. Allocated memory is still 109.1 MB. Free memory was 60.7 MB in the beginning and 47.9 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:09:04,505 INFO L168 Benchmark]: Witness Printer took 8.53 ms. Allocated memory is still 109.1 MB. Free memory is still 47.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:09:04,516 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 79.7 MB. Free memory was 51.4 MB in the beginning and 51.4 MB in the end (delta: 28.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 478.78 ms. Allocated memory is still 109.1 MB. Free memory was 78.9 MB in the beginning and 86.0 MB in the end (delta: -7.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.62 ms. Allocated memory is still 109.1 MB. Free memory was 86.0 MB in the beginning and 83.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.20 ms. Allocated memory is still 109.1 MB. Free memory was 83.9 MB in the beginning and 83.0 MB in the end (delta: 935.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 884.16 ms. Allocated memory is still 109.1 MB. Free memory was 83.0 MB in the beginning and 60.7 MB in the end (delta: 22.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 470.36 ms. Allocated memory is still 109.1 MB. Free memory was 60.7 MB in the beginning and 47.9 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 8.53 ms. Allocated memory is still 109.1 MB. Free memory is still 47.3 MB. 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: overapproximation of someBinaryArithmeticDOUBLEoperation at line 37, overapproximation of someUnaryDOUBLEoperation at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 52. Possible FailurePath: [L15] double _EPS = 1e-6; [L42] double d, dd, r; [L43] double epsilon = 1e-8; [L45] d = 1. VAL [_EPS=1/1000000] [L45] COND TRUE d <= 20. [L47] dd = __VERIFIER_nondet_double() [L11] COND FALSE !(!cond) [L19] double xn, xnp1, residu, lsup, linf; [L20] int i, cond; [L21] COND FALSE !(Input <= 1.0) [L21] xn = 1.0/Input [L22] xnp1 = xn [L23] residu = 2.0*_EPS*(xn+xnp1) [L24] lsup = _EPS * (xn+xnp1) [L25] linf = -lsup [L26] cond = ((residu > lsup) || (residu < linf)) [L27] i = 0 VAL [_EPS=1/1000000] [L28] COND FALSE !(\read(cond)) [L37] return 1.0 / xnp1; [L50] r = SqrtR(dd) [L13] COND TRUE !(cond) VAL [_EPS=1/1000000] [L3] __assert_fail("0", "sqrt_Newton_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: 0.3s, 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 02:09:07,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:09:07,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:09:07,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:09:07,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:09:07,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:09:07,687 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:09:07,693 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:09:07,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:09:07,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:09:07,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:09:07,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:09:07,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:09:07,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:09:07,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:09:07,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:09:07,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:09:07,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:09:07,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:09:07,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:09:07,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:09:07,750 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:09:07,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:09:07,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:09:07,767 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:09:07,772 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:09:07,773 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:09:07,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:09:07,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:09:07,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:09:07,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:09:07,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:09:07,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:09:07,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:09:07,801 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:09:07,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:09:07,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:09:07,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:09:07,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:09:07,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:09:07,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:09:07,807 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c73f7db8-976c-4756-9789-72e39c62a010/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-30 02:09:07,863 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:09:07,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:09:07,866 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:09:07,867 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:09:07,867 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:09:07,867 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:09:07,868 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:09:07,868 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:09:07,868 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:09:07,870 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:09:07,871 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:09:07,872 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:09:07,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:09:07,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:09:07,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:09:07,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:09:07,873 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:09:07,873 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 02:09:07,874 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 02:09:07,874 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:09:07,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:09:07,875 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:09:07,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:09:07,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:09:07,876 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 02:09:07,876 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:09:07,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:09:07,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:09:07,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:09:07,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:09:07,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:09:07,878 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-30 02:09:07,878 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 02:09:07,878 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:09:07,879 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:09:07,879 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:09:07,879 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_c73f7db8-976c-4756-9789-72e39c62a010/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c73f7db8-976c-4756-9789-72e39c62a010/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9874b894e580352626d8ebc271850c0b42d4635 [2020-11-30 02:09:08,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:09:08,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:09:08,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:09:08,419 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:09:08,420 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:09:08,421 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c73f7db8-976c-4756-9789-72e39c62a010/bin/utaipan/../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c [2020-11-30 02:09:08,499 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c73f7db8-976c-4756-9789-72e39c62a010/bin/utaipan/data/1b41a9520/b53838eb113c4f2fba7e8da1df6690ba/FLAG6aca8a828 [2020-11-30 02:09:09,188 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:09:09,190 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c73f7db8-976c-4756-9789-72e39c62a010/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c [2020-11-30 02:09:09,199 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c73f7db8-976c-4756-9789-72e39c62a010/bin/utaipan/data/1b41a9520/b53838eb113c4f2fba7e8da1df6690ba/FLAG6aca8a828 [2020-11-30 02:09:09,514 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c73f7db8-976c-4756-9789-72e39c62a010/bin/utaipan/data/1b41a9520/b53838eb113c4f2fba7e8da1df6690ba [2020-11-30 02:09:09,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:09:09,520 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:09:09,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:09:09,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:09:09,528 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:09:09,529 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:09:09" (1/1) ... [2020-11-30 02:09:09,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33f512f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:09, skipping insertion in model container [2020-11-30 02:09:09,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:09:09" (1/1) ... [2020-11-30 02:09:09,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:09:09,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:09:09,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:09:09,837 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:09:09,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:09:09,921 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:09:09,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:09 WrapperNode [2020-11-30 02:09:09,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:09:09,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:09:09,928 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:09:09,928 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:09:09,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:09" (1/1) ... [2020-11-30 02:09:09,972 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:09" (1/1) ... [2020-11-30 02:09:10,016 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:09:10,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:09:10,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:09:10,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:09:10,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:09" (1/1) ... [2020-11-30 02:09:10,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:09" (1/1) ... [2020-11-30 02:09:10,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:09" (1/1) ... [2020-11-30 02:09:10,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:09" (1/1) ... [2020-11-30 02:09:10,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:09" (1/1) ... [2020-11-30 02:09:10,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:09" (1/1) ... [2020-11-30 02:09:10,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:09" (1/1) ... [2020-11-30 02:09:10,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:09:10,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:09:10,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:09:10,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:09:10,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c73f7db8-976c-4756-9789-72e39c62a010/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 02:09:10,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 02:09:10,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:09:10,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:09:10,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:09:20,292 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:09:20,292 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-30 02:09:20,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:09:20 BoogieIcfgContainer [2020-11-30 02:09:20,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:09:20,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:09:20,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:09:20,299 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:09:20,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:09:09" (1/3) ... [2020-11-30 02:09:20,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5988fb7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:09:20, skipping insertion in model container [2020-11-30 02:09:20,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:09" (2/3) ... [2020-11-30 02:09:20,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5988fb7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:09:20, skipping insertion in model container [2020-11-30 02:09:20,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:09:20" (3/3) ... [2020-11-30 02:09:20,303 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Newton_pseudoconstant.c [2020-11-30 02:09:20,314 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:09:20,320 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 02:09:20,332 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 02:09:20,357 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:09:20,358 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:09:20,358 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:09:20,358 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:09:20,358 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:09:20,358 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:09:20,358 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:09:20,358 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:09:20,370 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-30 02:09:20,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 02:09:20,377 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:09:20,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:09:20,378 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:09:20,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:09:20,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1569195288, now seen corresponding path program 1 times [2020-11-30 02:09:20,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:09:20,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451801033] [2020-11-30 02:09:20,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c73f7db8-976c-4756-9789-72e39c62a010/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 02:09:22,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:09:22,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 02:09:22,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:09:22,676 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 02:09:22,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:09:22,682 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 02:09:22,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451801033] [2020-11-30 02:09:22,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:09:22,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 02:09:22,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23715817] [2020-11-30 02:09:22,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 02:09:22,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:09:22,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 02:09:22,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:09:22,711 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-11-30 02:09:22,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:09:22,733 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-11-30 02:09:22,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 02:09:22,735 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-11-30 02:09:22,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:09:22,747 INFO L225 Difference]: With dead ends: 35 [2020-11-30 02:09:22,748 INFO L226 Difference]: Without dead ends: 14 [2020-11-30 02:09:22,751 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 02:09:22,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-30 02:09:22,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-30 02:09:22,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-30 02:09:22,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-11-30 02:09:22,797 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2020-11-30 02:09:22,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:09:22,799 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-11-30 02:09:22,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 02:09:22,800 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-11-30 02:09:22,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 02:09:22,801 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:09:22,801 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:09:23,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 02:09:23,017 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:09:23,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:09:23,018 INFO L82 PathProgramCache]: Analyzing trace with hash -2049407722, now seen corresponding path program 1 times [2020-11-30 02:09:23,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:09:23,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1072615157] [2020-11-30 02:09:23,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c73f7db8-976c-4756-9789-72e39c62a010/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 02:09:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:09:25,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 02:09:25,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:09:25,353 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 02:09:25,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:09:27,544 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 02:09:29,627 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 02:09:40,436 WARN L193 SmtUtils]: Spent 6.90 s on a formula simplification. DAG size of input: 15 DAG size of output: 11 [2020-11-30 02:09:40,441 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 02:09:40,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1072615157] [2020-11-30 02:09:40,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:09:40,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-11-30 02:09:40,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667148417] [2020-11-30 02:09:40,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 02:09:40,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:09:40,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 02:09:40,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=27, Unknown=2, NotChecked=10, Total=56 [2020-11-30 02:09:40,447 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 8 states. [2020-11-30 02:09:43,042 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 02:10:06,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:10:06,557 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2020-11-30 02:10:06,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:10:06,559 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-11-30 02:10:06,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:10:06,560 INFO L225 Difference]: With dead ends: 32 [2020-11-30 02:10:06,560 INFO L226 Difference]: Without dead ends: 20 [2020-11-30 02:10:06,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=19, Invalid=28, Unknown=3, NotChecked=22, Total=72 [2020-11-30 02:10:06,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-30 02:10:06,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-30 02:10:06,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-30 02:10:06,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-11-30 02:10:06,568 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2020-11-30 02:10:06,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:10:06,568 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-11-30 02:10:06,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 02:10:06,569 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-11-30 02:10:06,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 02:10:06,570 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:10:06,570 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:10:06,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 02:10:06,788 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:10:06,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:10:06,789 INFO L82 PathProgramCache]: Analyzing trace with hash -274400360, now seen corresponding path program 1 times [2020-11-30 02:10:06,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:10:06,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1485825280] [2020-11-30 02:10:06,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c73f7db8-976c-4756-9789-72e39c62a010/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 02:10:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:10:10,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-30 02:10:10,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:10:11,447 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-11-30 02:10:11,456 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:10:12,263 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-11-30 02:10:12,747 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-11-30 02:10:15,256 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 02:10:15,273 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-30 02:10:15,282 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-30 02:10:18,647 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 02:10:21,155 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 02:10:24,066 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 02:10:26,812 WARN L860 $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 true [2020-11-30 02:10:26,819 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 02:10:32,662 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 02:10:51,182 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 02:11:08,198 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 02:11:11,023 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 02:11:11,028 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 02:11:11,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:11:13,720 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 02:11:16,193 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 02:11:18,681 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 02:11:21,174 WARN L860 $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 true [2020-11-30 02:11:23,787 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 02:11:26,373 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 02:11:27,504 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-11-30 02:11:27,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1485825280] [2020-11-30 02:11:27,507 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 02:11:27,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1120045709] [2020-11-30 02:11:27,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c73f7db8-976c-4756-9789-72e39c62a010/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 02:11:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:11:34,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-30 02:11:34,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:11:34,490 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:11:34,492 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 02:11:34,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245380773] [2020-11-30 02:11:34,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c73f7db8-976c-4756-9789-72e39c62a010/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 02:13:31,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:13:34,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-30 02:13:34,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:13:34,308 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@73fb16a [2020-11-30 02:13:34,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:13:34,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-11-30 02:13:34,309 ERROR L205 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2020-11-30 02:13:34,309 INFO L523 BasicCegarLoop]: Counterexample might be feasible [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2020-11-30 02:13:34,918 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 02:13:34,957 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-11-30 02:13:34,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:13:34 BoogieIcfgContainer [2020-11-30 02:13:34,958 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:13:34,959 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:13:34,959 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:13:34,959 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:13:34,960 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:09:20" (3/4) ... [2020-11-30 02:13:34,963 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 02:13:34,964 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:13:34,965 INFO L168 Benchmark]: Toolchain (without parser) took 265444.97 ms. Allocated memory is still 79.7 MB. Free memory was 56.6 MB in the beginning and 56.5 MB in the end (delta: 95.4 kB). Peak memory consumption was 1.9 MB. Max. memory is 16.1 GB. [2020-11-30 02:13:34,967 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 54.5 MB. Free memory was 35.7 MB in the beginning and 35.7 MB in the end (delta: 34.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:13:34,968 INFO L168 Benchmark]: CACSL2BoogieTranslator took 403.03 ms. Allocated memory is still 79.7 MB. Free memory was 56.4 MB in the beginning and 45.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:13:34,970 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.03 ms. Allocated memory is still 79.7 MB. Free memory was 45.6 MB in the beginning and 44.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:13:34,971 INFO L168 Benchmark]: Boogie Preprocessor took 86.48 ms. Allocated memory is still 79.7 MB. Free memory was 43.8 MB in the beginning and 42.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:13:34,973 INFO L168 Benchmark]: RCFGBuilder took 10186.49 ms. Allocated memory is still 79.7 MB. Free memory was 42.5 MB in the beginning and 50.0 MB in the end (delta: -7.4 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:13:34,973 INFO L168 Benchmark]: TraceAbstraction took 254662.56 ms. Allocated memory is still 79.7 MB. Free memory was 49.5 MB in the beginning and 56.9 MB in the end (delta: -7.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:13:34,974 INFO L168 Benchmark]: Witness Printer took 4.91 ms. Allocated memory is still 79.7 MB. Free memory is still 56.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:13:34,978 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 54.5 MB. Free memory was 35.7 MB in the beginning and 35.7 MB in the end (delta: 34.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 403.03 ms. Allocated memory is still 79.7 MB. Free memory was 56.4 MB in the beginning and 45.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 92.03 ms. Allocated memory is still 79.7 MB. Free memory was 45.6 MB in the beginning and 44.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 86.48 ms. Allocated memory is still 79.7 MB. Free memory was 43.8 MB in the beginning and 42.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 10186.49 ms. Allocated memory is still 79.7 MB. Free memory was 42.5 MB in the beginning and 50.0 MB in the end (delta: -7.4 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 254662.56 ms. Allocated memory is still 79.7 MB. Free memory was 49.5 MB in the beginning and 56.9 MB in the end (delta: -7.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.91 ms. Allocated memory is still 79.7 MB. Free memory is still 56.5 MB. 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: [L15] double _EPS = 1e-6; [L42] double d, dd, r; [L43] double epsilon = 1e-8; [L45] d = 1. [L45] COND TRUE d <= 20. [L47] dd = __VERIFIER_nondet_double() [L11] COND FALSE !(!cond) [L19] double xn, xnp1, residu, lsup, linf; [L20] int i, cond; [L21] COND FALSE !(Input <= 1.0) [L21] xn = 1.0/Input [L22] xnp1 = xn [L23] residu = 2.0*_EPS*(xn+xnp1) [L24] lsup = _EPS * (xn+xnp1) [L25] linf = -lsup [L26] cond = ((residu > lsup) || (residu < linf)) [L27] i = 0 [L28] COND FALSE !(\read(cond)) [L37] return 1.0 / xnp1; [L50] r = SqrtR(dd) [L13] COND TRUE !(cond) [L3] __assert_fail("0", "sqrt_Newton_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: 254.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 26.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 31 SDtfs, 2 SDslu, 23 SDs, 0 SdLazy, 22 SolverSat, 0 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 22.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 17.2s 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, 4.0s SatisfiabilityAnalysisTime, 15.5s 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...