./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8967790177fc14e8157cff1ce1fb723d3ab55513216099f6dbb82db8bc4d5837 ............................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8967790177fc14e8157cff1ce1fb723d3ab55513216099f6dbb82db8bc4d5837 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:14:52,128 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:14:52,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:14:52,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:14:52,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:14:52,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:14:52,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:14:52,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:14:52,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:14:52,173 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:14:52,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:14:52,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:14:52,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:14:52,178 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:14:52,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:14:52,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:14:52,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:14:52,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:14:52,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:14:52,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:14:52,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:14:52,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:14:52,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:14:52,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:14:52,221 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:14:52,222 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:14:52,222 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:14:52,223 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:14:52,224 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:14:52,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:14:52,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:14:52,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:14:52,227 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:14:52,228 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:14:52,230 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:14:52,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:14:52,233 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:14:52,234 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:14:52,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:14:52,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:14:52,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:14:52,237 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 20:14:52,281 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:14:52,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:14:52,282 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:14:52,282 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:14:52,290 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:14:52,290 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:14:52,290 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:14:52,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:14:52,291 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:14:52,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:14:52,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:14:52,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:14:52,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:14:52,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:14:52,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:14:52,293 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:14:52,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:14:52,293 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:14:52,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:14:52,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:14:52,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:14:52,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:14:52,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:14:52,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:14:52,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:14:52,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:14:52,295 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:14:52,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:14:52,296 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:14:52,296 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:14:52,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:14:52,296 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:14:52,297 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8967790177fc14e8157cff1ce1fb723d3ab55513216099f6dbb82db8bc4d5837 [2021-10-21 20:14:52,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:14:52,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:14:52,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:14:52,661 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:14:52,661 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:14:52,662 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c [2021-10-21 20:14:52,737 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/data/68a5e06ce/b8ab7bed0d1d4ac29052f980c2db8b64/FLAGfb78c65a7 [2021-10-21 20:14:53,269 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:14:53,269 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c [2021-10-21 20:14:53,284 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/data/68a5e06ce/b8ab7bed0d1d4ac29052f980c2db8b64/FLAGfb78c65a7 [2021-10-21 20:14:53,647 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/data/68a5e06ce/b8ab7bed0d1d4ac29052f980c2db8b64 [2021-10-21 20:14:53,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:14:53,661 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:14:53,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:14:53,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:14:53,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:14:53,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:14:53" (1/1) ... [2021-10-21 20:14:53,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63a7774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:53, skipping insertion in model container [2021-10-21 20:14:53,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:14:53" (1/1) ... [2021-10-21 20:14:53,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:14:53,689 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:14:53,853 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c[570,583] [2021-10-21 20:14:53,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:14:53,897 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:14:53,915 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c[570,583] [2021-10-21 20:14:53,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:14:53,937 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:14:53,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:53 WrapperNode [2021-10-21 20:14:53,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:14:53,939 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:14:53,939 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:14:53,939 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:14:53,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:53" (1/1) ... [2021-10-21 20:14:53,955 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:53" (1/1) ... [2021-10-21 20:14:53,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:14:53,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:14:53,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:14:53,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:14:53,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:53" (1/1) ... [2021-10-21 20:14:53,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:53" (1/1) ... [2021-10-21 20:14:54,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:53" (1/1) ... [2021-10-21 20:14:54,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:53" (1/1) ... [2021-10-21 20:14:54,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:53" (1/1) ... [2021-10-21 20:14:54,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:53" (1/1) ... [2021-10-21 20:14:54,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:53" (1/1) ... [2021-10-21 20:14:54,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:14:54,048 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:14:54,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:14:54,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:14:54,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:53" (1/1) ... [2021-10-21 20:14:54,061 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:14:54,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:14:54,082 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:14:54,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:14:54,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:14:54,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:14:54,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:14:54,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:14:54,412 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:14:54,412 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-21 20:14:54,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:14:54 BoogieIcfgContainer [2021-10-21 20:14:54,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:14:54,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:14:54,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:14:54,434 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:14:54,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:14:53" (1/3) ... [2021-10-21 20:14:54,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f4c6ad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:14:54, skipping insertion in model container [2021-10-21 20:14:54,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:53" (2/3) ... [2021-10-21 20:14:54,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f4c6ad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:14:54, skipping insertion in model container [2021-10-21 20:14:54,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:14:54" (3/3) ... [2021-10-21 20:14:54,437 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_biNewton_pseudoconstant.c [2021-10-21 20:14:54,442 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:14:54,442 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 20:14:54,544 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:14:54,553 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 20:14:54,553 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 20:14:54,567 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:14:54,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 20:14:54,572 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:14:54,573 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:14:54,573 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:14:54,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:14:54,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1569195288, now seen corresponding path program 1 times [2021-10-21 20:14:54,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:14:54,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305883148] [2021-10-21 20:14:54,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:14:54,590 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:14:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:14:54,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:14:54,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:14:54,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305883148] [2021-10-21 20:14:54,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305883148] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:14:54,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:14:54,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 20:14:54,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398517726] [2021-10-21 20:14:54,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 20:14:54,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:14:54,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 20:14:54,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:14:54,784 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:14:54,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:14:54,798 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2021-10-21 20:14:54,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 20:14:54,799 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-21 20:14:54,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:14:54,807 INFO L225 Difference]: With dead ends: 34 [2021-10-21 20:14:54,807 INFO L226 Difference]: Without dead ends: 14 [2021-10-21 20:14:54,810 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:14:54,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-21 20:14:54,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-21 20:14:54,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:14:54,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-10-21 20:14:54,840 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2021-10-21 20:14:54,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:14:54,840 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-21 20:14:54,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:14:54,841 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-10-21 20:14:54,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 20:14:54,842 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:14:54,842 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:14:54,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:14:54,843 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:14:54,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:14:54,844 INFO L82 PathProgramCache]: Analyzing trace with hash -2049407722, now seen corresponding path program 1 times [2021-10-21 20:14:54,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:14:54,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330622412] [2021-10-21 20:14:54,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:14:54,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:14:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:14:54,876 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:14:54,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:14:54,923 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:14:54,924 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 20:14:54,926 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:14:54,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 20:14:54,933 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:14:54,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:14:54 BoogieIcfgContainer [2021-10-21 20:14:54,959 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:14:54,960 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:14:54,960 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:14:54,961 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:14:54,961 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:14:54" (3/4) ... [2021-10-21 20:14:54,964 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 20:14:54,964 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:14:54,966 INFO L168 Benchmark]: Toolchain (without parser) took 1304.44 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 54.4 MB in the beginning and 78.2 MB in the end (delta: -23.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:14:54,967 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 90.2 MB. Free memory is still 70.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:14:54,968 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.53 ms. Allocated memory is still 90.2 MB. Free memory was 54.1 MB in the beginning and 64.9 MB in the end (delta: -10.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-21 20:14:54,969 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.52 ms. Allocated memory is still 90.2 MB. Free memory was 64.9 MB in the beginning and 63.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:14:54,969 INFO L168 Benchmark]: Boogie Preprocessor took 57.62 ms. Allocated memory is still 90.2 MB. Free memory was 63.1 MB in the beginning and 62.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:14:54,970 INFO L168 Benchmark]: RCFGBuilder took 365.81 ms. Allocated memory is still 90.2 MB. Free memory was 62.1 MB in the beginning and 52.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:14:54,971 INFO L168 Benchmark]: TraceAbstraction took 544.03 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 51.7 MB in the beginning and 78.7 MB in the end (delta: -27.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:14:54,972 INFO L168 Benchmark]: Witness Printer took 4.48 ms. Allocated memory is still 111.1 MB. Free memory was 78.7 MB in the beginning and 78.2 MB in the end (delta: 512.5 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:14:54,975 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 90.2 MB. Free memory is still 70.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 275.53 ms. Allocated memory is still 90.2 MB. Free memory was 54.1 MB in the beginning and 64.9 MB in the end (delta: -10.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.52 ms. Allocated memory is still 90.2 MB. Free memory was 64.9 MB in the beginning and 63.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.62 ms. Allocated memory is still 90.2 MB. Free memory was 63.1 MB in the beginning and 62.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 365.81 ms. Allocated memory is still 90.2 MB. Free memory was 62.1 MB in the beginning and 52.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 544.03 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 51.7 MB in the beginning and 78.7 MB in the end (delta: -27.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.48 ms. Allocated memory is still 111.1 MB. Free memory was 78.7 MB in the beginning and 78.2 MB in the end (delta: 512.5 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 53, overapproximation of someUnaryDOUBLEoperation at line 25, overapproximation of someBinaryArithmeticDOUBLEoperation at line 38. Possible FailurePath: [L15] double _EPS = 1e-6; VAL [_EPS=1/1000000] [L43] double d, dd, r; [L44] double epsilon = 1e-8; [L46] d = 1. VAL [_EPS=1/1000000] [L46] COND TRUE d <= 20. [L48] dd = __VERIFIER_nondet_double() [L11] COND FALSE !(!cond) VAL [_EPS=1/1000000] [L19] double xn, xnp1, residu, lsup, linf; [L20] int i, cond; VAL [_EPS=1/1000000] [L21] COND TRUE Input <= 1.0 [L21] xn = 1.0 VAL [_EPS=1/1000000] [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)) VAL [_EPS=1/1000000] [L38] return 1.0 / xnp1; VAL [_EPS=1/1000000] [L51] r = SqrtR(dd) [L13] COND TRUE !(cond) VAL [_EPS=1/1000000] [L13] reach_error() VAL [_EPS=1/1000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 404.8ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 9.4ms, AutomataDifference: 60.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 20 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 16.1ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 19.3ms SsaConstructionTime, 52.4ms SatisfiabilityAnalysisTime, 47.0ms InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2021-10-21 20:14:55,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:14:57,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:14:57,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:14:57,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:14:57,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:14:57,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:14:57,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:14:57,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:14:57,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:14:57,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:14:57,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:14:57,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:14:57,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:14:57,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:14:57,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:14:57,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:14:57,453 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:14:57,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:14:57,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:14:57,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:14:57,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:14:57,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:14:57,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:14:57,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:14:57,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:14:57,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:14:57,479 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:14:57,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:14:57,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:14:57,483 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:14:57,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:14:57,484 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:14:57,486 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:14:57,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:14:57,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:14:57,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:14:57,490 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:14:57,490 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:14:57,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:14:57,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:14:57,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:14:57,494 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-21 20:14:57,537 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:14:57,538 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:14:57,538 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:14:57,538 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:14:57,541 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:14:57,541 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:14:57,541 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:14:57,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:14:57,541 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:14:57,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:14:57,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:14:57,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:14:57,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:14:57,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:14:57,544 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 20:14:57,544 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 20:14:57,544 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:14:57,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:14:57,544 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:14:57,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:14:57,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:14:57,545 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:14:57,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:14:57,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:14:57,546 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:14:57,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:14:57,546 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:14:57,546 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 20:14:57,546 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 20:14:57,546 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:14:57,547 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:14:57,547 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:14:57,547 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:14:57,547 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 20:14:57,548 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_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8967790177fc14e8157cff1ce1fb723d3ab55513216099f6dbb82db8bc4d5837 [2021-10-21 20:14:57,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:14:57,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:14:57,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:14:57,987 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:14:57,999 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:14:58,000 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c [2021-10-21 20:14:58,076 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/data/6e276f3c1/361e581b99be46fa885605ded059aa37/FLAG06e1d9c0f [2021-10-21 20:14:58,550 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:14:58,551 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c [2021-10-21 20:14:58,559 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/data/6e276f3c1/361e581b99be46fa885605ded059aa37/FLAG06e1d9c0f [2021-10-21 20:14:58,924 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/data/6e276f3c1/361e581b99be46fa885605ded059aa37 [2021-10-21 20:14:58,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:14:58,928 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:14:58,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:14:58,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:14:58,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:14:58,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:14:58" (1/1) ... [2021-10-21 20:14:58,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18f74141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:58, skipping insertion in model container [2021-10-21 20:14:58,950 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:14:58" (1/1) ... [2021-10-21 20:14:58,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:14:58,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:14:59,111 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c[570,583] [2021-10-21 20:14:59,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:14:59,144 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:14:59,177 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c[570,583] [2021-10-21 20:14:59,202 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:14:59,217 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:14:59,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:59 WrapperNode [2021-10-21 20:14:59,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:14:59,218 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:14:59,219 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:14:59,219 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:14:59,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:59" (1/1) ... [2021-10-21 20:14:59,236 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:59" (1/1) ... [2021-10-21 20:14:59,258 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:14:59,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:14:59,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:14:59,259 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:14:59,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:59" (1/1) ... [2021-10-21 20:14:59,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:59" (1/1) ... [2021-10-21 20:14:59,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:59" (1/1) ... [2021-10-21 20:14:59,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:59" (1/1) ... [2021-10-21 20:14:59,279 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:59" (1/1) ... [2021-10-21 20:14:59,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:59" (1/1) ... [2021-10-21 20:14:59,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:59" (1/1) ... [2021-10-21 20:14:59,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:14:59,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:14:59,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:14:59,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:14:59,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:59" (1/1) ... [2021-10-21 20:14:59,298 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:14:59,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:14:59,323 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:14:59,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:14:59,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-21 20:14:59,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:14:59,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:14:59,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:15:07,736 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:15:07,736 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-21 20:15:07,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:15:07 BoogieIcfgContainer [2021-10-21 20:15:07,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:15:07,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:15:07,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:15:07,744 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:15:07,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:14:58" (1/3) ... [2021-10-21 20:15:07,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb7d54e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:15:07, skipping insertion in model container [2021-10-21 20:15:07,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:59" (2/3) ... [2021-10-21 20:15:07,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb7d54e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:15:07, skipping insertion in model container [2021-10-21 20:15:07,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:15:07" (3/3) ... [2021-10-21 20:15:07,747 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_biNewton_pseudoconstant.c [2021-10-21 20:15:07,753 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:15:07,753 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 20:15:07,818 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:15:07,825 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 20:15:07,825 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 20:15:07,837 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:07,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 20:15:07,842 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:07,842 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:07,843 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:07,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:07,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1569195288, now seen corresponding path program 1 times [2021-10-21 20:15:07,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:15:07,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035249775] [2021-10-21 20:15:07,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:07,862 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:15:07,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:15:07,877 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:15:07,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 20:15:09,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:09,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-21 20:15:09,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:15:09,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:09,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:15:09,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:09,648 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:15:09,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2035249775] [2021-10-21 20:15:09,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2035249775] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:09,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:09,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-21 20:15:09,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979469743] [2021-10-21 20:15:09,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 20:15:09,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:15:09,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 20:15:09,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:15:09,672 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:09,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:09,687 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2021-10-21 20:15:09,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 20:15:09,689 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-21 20:15:09,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:09,696 INFO L225 Difference]: With dead ends: 34 [2021-10-21 20:15:09,697 INFO L226 Difference]: Without dead ends: 14 [2021-10-21 20:15:09,699 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:15:09,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-21 20:15:09,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-21 20:15:09,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:09,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-10-21 20:15:09,730 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2021-10-21 20:15:09,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:09,730 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-21 20:15:09,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:09,731 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-10-21 20:15:09,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 20:15:09,732 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:09,732 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:09,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:15:09,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:15:09,947 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:09,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:09,948 INFO L82 PathProgramCache]: Analyzing trace with hash -2049407722, now seen corresponding path program 1 times [2021-10-21 20:15:09,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:15:09,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [548093271] [2021-10-21 20:15:09,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:09,950 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:15:09,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:15:09,952 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:15:09,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 20:15:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:11,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 20:15:11,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:15:12,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:12,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:15:23,020 WARN L838 $PredicateComparison]: unable to prove that (or (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))) (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))) is different from false [2021-10-21 20:15:25,091 WARN L860 $PredicateComparison]: unable to prove that (or (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))) (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))) is different from true [2021-10-21 20:15:42,416 WARN L207 SmtUtils]: Spent 8.10 s on a formula simplification. DAG size of input: 15 DAG size of output: 11 [2021-10-21 20:15:46,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:46,101 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:15:46,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [548093271] [2021-10-21 20:15:46,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [548093271] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:46,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:46,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-21 20:15:46,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553658864] [2021-10-21 20:15:46,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 20:15:46,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:15:46,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:15:46,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=27, Unknown=2, NotChecked=10, Total=56 [2021-10-21 20:15:46,106 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:49,328 WARN L860 $PredicateComparison]: unable to prove that (and (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (or (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))) (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))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_SqrtR_~xn~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-10-21 20:16:12,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:16:12,642 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2021-10-21 20:16:12,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:16:12,713 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-21 20:16:12,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:16:12,714 INFO L225 Difference]: With dead ends: 32 [2021-10-21 20:16:12,714 INFO L226 Difference]: Without dead ends: 20 [2021-10-21 20:16:12,715 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 20664.0ms TimeCoverageRelationStatistics Valid=19, Invalid=28, Unknown=3, NotChecked=22, Total=72 [2021-10-21 20:16:12,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-21 20:16:12,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-21 20:16:12,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:16:12,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-10-21 20:16:12,721 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2021-10-21 20:16:12,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:16:12,721 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-10-21 20:16:12,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:16:12,722 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-10-21 20:16:12,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 20:16:12,722 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:16:12,723 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:16:12,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:12,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:16:12,927 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:16:12,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:12,928 INFO L82 PathProgramCache]: Analyzing trace with hash -274400360, now seen corresponding path program 1 times [2021-10-21 20:16:12,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:16:12,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1726746520] [2021-10-21 20:16:12,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:12,934 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:16:12,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:16:12,935 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:16:12,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-21 20:16:15,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:15,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-21 20:16:15,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:31,896 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)) (= (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xn~0)))) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-21 20:17:10,458 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse2 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse1) .cse2) (fp.mul c_currentRoundingMode .cse1 .cse2))))) (or (and (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0))) (not .cse0) (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv0 32))) (and (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv1 32)) (or (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0)) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (= (fp.div c_currentRoundingMode .cse3 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xnp1~0) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse3)))))) is different from false [2021-10-21 20:17:12,532 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse0 (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse2 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse1) .cse2) (fp.mul c_currentRoundingMode .cse1 .cse2))))) (or (and (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0))) (not .cse0) (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv0 32))) (and (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv1 32)) (or (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0)) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (= (fp.div c_currentRoundingMode .cse3 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xnp1~0) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse3)))))) is different from true [2021-10-21 20:17:41,434 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0))) (= c_currentRoundingMode roundNearestTiesToEven) (not (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse1 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse0) .cse1) (fp.mul c_currentRoundingMode .cse0 .cse1)))) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (= (fp.div c_currentRoundingMode .cse2 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xnp1~0) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse2)))))) is different from false [2021-10-21 20:17:43,508 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0))) (= c_currentRoundingMode roundNearestTiesToEven) (not (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse1 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse0) .cse1) (fp.mul c_currentRoundingMode .cse0 .cse1)))) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (= (fp.div c_currentRoundingMode .cse2 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xnp1~0) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse2)))))) is different from true [2021-10-21 20:17:49,288 WARN L207 SmtUtils]: Spent 5.75 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 20:17:54,973 WARN L207 SmtUtils]: Spent 5.68 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 20:18:00,666 WARN L207 SmtUtils]: Spent 5.69 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 20:18:06,384 WARN L207 SmtUtils]: Spent 5.71 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 20:18:11,992 WARN L207 SmtUtils]: Spent 5.61 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-21 20:18:17,274 WARN L207 SmtUtils]: Spent 5.28 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 20:18:19,728 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse4 (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_SqrtR_~Input))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse3 (fp.add c_currentRoundingMode .cse4 .cse4))) (let ((.cse1 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse2) .cse3))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (not (fp.gt .cse1 (fp.mul c_currentRoundingMode .cse2 .cse3))) (not (fp.lt .cse1 ULTIMATE.start_SqrtR_~linf~0)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)) (= |c_ULTIMATE.start_SqrtR_#res| (fp.div c_currentRoundingMode .cse0 .cse4)))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-21 20:18:25,496 WARN L207 SmtUtils]: Spent 5.71 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 20:18:33,543 WARN L207 SmtUtils]: Spent 5.64 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 20:18:39,207 WARN L207 SmtUtils]: Spent 5.66 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 20:18:44,842 WARN L207 SmtUtils]: Spent 5.63 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 20:18:50,535 WARN L207 SmtUtils]: Spent 5.69 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 20:18:56,359 WARN L207 SmtUtils]: Spent 5.82 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-21 20:19:02,209 WARN L207 SmtUtils]: Spent 5.85 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-21 20:19:08,209 WARN L207 SmtUtils]: Spent 6.00 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-21 20:19:16,505 WARN L207 SmtUtils]: Spent 5.80 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 20:19:24,876 WARN L207 SmtUtils]: Spent 5.90 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 20:19:30,714 WARN L207 SmtUtils]: Spent 5.84 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 20:19:36,774 WARN L207 SmtUtils]: Spent 6.06 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 20:19:42,692 WARN L207 SmtUtils]: Spent 5.92 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 20:19:48,177 WARN L207 SmtUtils]: Spent 5.48 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-21 20:19:54,007 WARN L207 SmtUtils]: Spent 5.83 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-21 20:20:02,382 WARN L207 SmtUtils]: Spent 5.93 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 20:20:08,404 WARN L207 SmtUtils]: Spent 6.02 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 20:20:14,350 WARN L207 SmtUtils]: Spent 5.94 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 20:20:20,412 WARN L207 SmtUtils]: Spent 6.06 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 20:20:25,874 WARN L207 SmtUtils]: Spent 5.46 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-21 20:20:31,895 WARN L207 SmtUtils]: Spent 6.02 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-21 20:20:37,860 WARN L207 SmtUtils]: Spent 5.96 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 20:20:44,008 WARN L207 SmtUtils]: Spent 6.15 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 20:20:50,044 WARN L207 SmtUtils]: Spent 6.03 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 20:20:55,940 WARN L207 SmtUtils]: Spent 5.89 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-21 20:21:01,868 WARN L207 SmtUtils]: Spent 5.93 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-21 20:21:07,747 WARN L207 SmtUtils]: Spent 5.88 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-21 20:21:13,604 WARN L207 SmtUtils]: Spent 5.82 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 20:21:19,667 WARN L207 SmtUtils]: Spent 6.05 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 20:21:25,945 WARN L207 SmtUtils]: Spent 6.28 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 20:21:31,963 WARN L207 SmtUtils]: Spent 6.00 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-21 20:21:37,999 WARN L207 SmtUtils]: Spent 6.03 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-21 20:21:43,836 WARN L207 SmtUtils]: Spent 5.83 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-21 20:21:49,694 WARN L207 SmtUtils]: Spent 5.86 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-21 20:21:55,732 WARN L207 SmtUtils]: Spent 6.04 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-21 20:22:01,719 WARN L207 SmtUtils]: Spent 5.99 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-21 20:22:07,795 WARN L207 SmtUtils]: Spent 6.07 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-21 20:22:10,307 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse7 (fp.div roundNearestTiesToEven .cse1 ULTIMATE.start_SqrtR_~Input))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse3 (fp.add roundNearestTiesToEven .cse7 .cse7))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse2) .cse3))) (and (not (fp.lt .cse0 ULTIMATE.start_SqrtR_~linf~0)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (not (fp.gt .cse0 (fp.mul roundNearestTiesToEven .cse2 .cse3))) (let ((.cse6 (fp.div roundNearestTiesToEven .cse1 .cse7))) (let ((.cse4 (fp.geq .cse6 ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (.cse5 (fp.leq .cse6 ((_ to_fp 11 53) roundNearestTiesToEven 5.0)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (or (not .cse4) (not .cse5))) (and .cse4 .cse5 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)))))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse1)))))))) is different from false [2021-10-21 20:22:12,595 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse7 (fp.div roundNearestTiesToEven .cse1 ULTIMATE.start_SqrtR_~Input))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse3 (fp.add roundNearestTiesToEven .cse7 .cse7))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse2) .cse3))) (and (not (fp.lt .cse0 ULTIMATE.start_SqrtR_~linf~0)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (not (fp.gt .cse0 (fp.mul roundNearestTiesToEven .cse2 .cse3))) (let ((.cse6 (fp.div roundNearestTiesToEven .cse1 .cse7))) (let ((.cse4 (fp.geq .cse6 ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (.cse5 (fp.leq .cse6 ((_ to_fp 11 53) roundNearestTiesToEven 5.0)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (or (not .cse4) (not .cse5))) (and .cse4 .cse5 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)))))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse1)))))))) is different from true [2021-10-21 20:22:20,929 WARN L207 SmtUtils]: Spent 5.82 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 20:22:29,267 WARN L207 SmtUtils]: Spent 5.84 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 20:22:35,365 WARN L207 SmtUtils]: Spent 6.10 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 20:22:41,509 WARN L207 SmtUtils]: Spent 6.14 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 20:22:47,768 WARN L207 SmtUtils]: Spent 6.26 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 20:22:53,336 WARN L207 SmtUtils]: Spent 5.57 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-21 20:22:59,103 WARN L207 SmtUtils]: Spent 5.76 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-21 20:23:07,343 WARN L207 SmtUtils]: Spent 5.80 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 20:23:13,272 WARN L207 SmtUtils]: Spent 5.92 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 20:23:19,251 WARN L207 SmtUtils]: Spent 5.98 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 20:23:25,156 WARN L207 SmtUtils]: Spent 5.90 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 20:23:30,642 WARN L207 SmtUtils]: Spent 5.49 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-21 20:23:36,606 WARN L207 SmtUtils]: Spent 5.96 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-21 20:23:42,640 WARN L207 SmtUtils]: Spent 6.03 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 20:23:48,619 WARN L207 SmtUtils]: Spent 5.98 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 20:23:54,693 WARN L207 SmtUtils]: Spent 6.07 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 20:24:00,701 WARN L207 SmtUtils]: Spent 6.01 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-21 20:24:06,769 WARN L207 SmtUtils]: Spent 6.07 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-21 20:24:12,810 WARN L207 SmtUtils]: Spent 6.04 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-21 20:24:15,284 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse5 (fp.div roundNearestTiesToEven .cse1 ULTIMATE.start_SqrtR_~Input))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse3 (fp.add roundNearestTiesToEven .cse5 .cse5))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse2) .cse3))) (and (not (fp.lt .cse0 ULTIMATE.start_SqrtR_~linf~0)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (not (fp.gt .cse0 (fp.mul roundNearestTiesToEven .cse2 .cse3))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse1)) (let ((.cse4 (fp.div roundNearestTiesToEven .cse1 .cse5))) (or (not (fp.geq .cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (not (fp.leq .cse4 ((_ to_fp 11 53) roundNearestTiesToEven 5.0))))))))))) is different from false [2021-10-21 20:24:17,593 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse5 (fp.div roundNearestTiesToEven .cse1 ULTIMATE.start_SqrtR_~Input))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse3 (fp.add roundNearestTiesToEven .cse5 .cse5))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse2) .cse3))) (and (not (fp.lt .cse0 ULTIMATE.start_SqrtR_~linf~0)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (not (fp.gt .cse0 (fp.mul roundNearestTiesToEven .cse2 .cse3))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse1)) (let ((.cse4 (fp.div roundNearestTiesToEven .cse1 .cse5))) (or (not (fp.geq .cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (not (fp.leq .cse4 ((_ to_fp 11 53) roundNearestTiesToEven 5.0))))))))))) is different from true [2021-10-21 20:24:17,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:24:17,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:24:30,380 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xnp1~0))) (and (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)))) is different from false [2021-10-21 20:24:32,586 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xnp1~0))) (and (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)))) is different from true [2021-10-21 20:24:42,559 WARN L207 SmtUtils]: Spent 5.04 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 20:24:49,697 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.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)))) (not (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv0 32)))) is different from false [2021-10-21 20:24:56,541 WARN L207 SmtUtils]: Spent 5.09 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-21 20:25:01,727 WARN L207 SmtUtils]: Spent 5.18 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 20:25:06,959 WARN L207 SmtUtils]: Spent 5.23 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-21 20:25:12,123 WARN L207 SmtUtils]: Spent 5.16 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-21 20:25:14,447 WARN L838 $PredicateComparison]: unable to prove that (or (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))) (let ((.cse1 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xn~0))) (and (fp.geq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))) (fp.leq .cse1 ((_ to_fp 11 53) c_currentRoundingMode 5.0)))) (forall ((v_ULTIMATE.start_SqrtR_~linf~0_7 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_7))) is different from false [2021-10-21 20:25:16,755 WARN L860 $PredicateComparison]: unable to prove that (or (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))) (let ((.cse1 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xn~0))) (and (fp.geq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))) (fp.leq .cse1 ((_ to_fp 11 53) c_currentRoundingMode 5.0)))) (forall ((v_ULTIMATE.start_SqrtR_~linf~0_7 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_7))) is different from true [2021-10-21 20:25:17,666 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-21 20:25:17,667 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:25:17,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1726746520] [2021-10-21 20:25:17,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-21 20:25:17,672 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-10-21 20:25:17,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [511783832] [2021-10-21 20:25:17,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:17,673 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-21 20:25:17,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/cvc4 [2021-10-21 20:25:17,677 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-21 20:25:17,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-21 20:25:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:25:23,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 20:25:23,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:25:23,429 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-21 20:25:23,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109306318] [2021-10-21 20:25:23,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:23,430 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:25:23,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:23,443 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:25:23,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-21 20:28:18,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:18,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-21 20:28:18,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:28:18,910 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-21 20:28:18,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:28:18,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-21 20:28:18,911 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-21 20:28:18,912 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-21 20:28:18,919 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:28:18,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-21 20:28:19,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-21 20:28:19,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-10-21 20:28:19,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8b3aae-3641-449f-ac35-5c4f00cf72a5/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt [2021-10-21 20:28:19,529 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:28:19,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:28:19 BoogieIcfgContainer [2021-10-21 20:28:19,540 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:28:19,541 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:28:19,541 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:28:19,542 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:28:19,542 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:15:07" (3/4) ... [2021-10-21 20:28:19,552 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 20:28:19,552 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:28:19,553 INFO L168 Benchmark]: Toolchain (without parser) took 800624.78 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 42.8 MB in the beginning and 60.0 MB in the end (delta: -17.2 MB). Peak memory consumption was 33.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:28:19,553 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 62.9 MB. Free memory is still 44.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:28:19,553 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.69 ms. Allocated memory is still 62.9 MB. Free memory was 42.7 MB in the beginning and 45.7 MB in the end (delta: -3.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-21 20:28:19,554 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.31 ms. Allocated memory is still 62.9 MB. Free memory was 45.7 MB in the beginning and 44.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:28:19,554 INFO L168 Benchmark]: Boogie Preprocessor took 30.93 ms. Allocated memory is still 62.9 MB. Free memory was 44.0 MB in the beginning and 42.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:28:19,562 INFO L168 Benchmark]: RCFGBuilder took 8448.27 ms. Allocated memory is still 62.9 MB. Free memory was 42.4 MB in the beginning and 31.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:28:19,563 INFO L168 Benchmark]: TraceAbstraction took 791800.29 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 31.5 MB in the beginning and 30.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. [2021-10-21 20:28:19,564 INFO L168 Benchmark]: Witness Printer took 10.65 ms. Allocated memory is still 79.7 MB. Free memory was 29.9 MB in the beginning and 60.0 MB in the end (delta: -30.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:28:19,566 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 62.9 MB. Free memory is still 44.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 288.69 ms. Allocated memory is still 62.9 MB. Free memory was 42.7 MB in the beginning and 45.7 MB in the end (delta: -3.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.31 ms. Allocated memory is still 62.9 MB. Free memory was 45.7 MB in the beginning and 44.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.93 ms. Allocated memory is still 62.9 MB. Free memory was 44.0 MB in the beginning and 42.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 8448.27 ms. Allocated memory is still 62.9 MB. Free memory was 42.4 MB in the beginning and 31.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 791800.29 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 31.5 MB in the beginning and 30.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. * Witness Printer took 10.65 ms. Allocated memory is still 79.7 MB. Free memory was 29.9 MB in the beginning and 60.0 MB in the end (delta: -30.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L15] double _EPS = 1e-6; [L43] double d, dd, r; [L44] double epsilon = 1e-8; [L46] d = 1. [L46] COND TRUE d <= 20. [L48] 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)) [L38] return 1.0 / xnp1; [L51] r = SqrtR(dd) [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 791711.4ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 8.6ms, AutomataDifference: 26652.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 31 SDtfs, 1 SDslu, 29 SDs, 0 SdLazy, 23 SolverSat, 0 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 23550.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 20664.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=2, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 21.1ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 29.1ms SsaConstructionTime, 2793.0ms SatisfiabilityAnalysisTime, 35012.2ms InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 44 ConstructedInterpolants, 1 QuantifiedInterpolants, 272 SizeOfPredicates, 7 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...