./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/sqrt_poly2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/sqrt_poly2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b63905375af38d9971341930078b6c47230c38fd ............................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/sqrt_poly2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b63905375af38d9971341930078b6c47230c38fd .................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-27 23:38:07,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:38:07,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:38:07,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:38:07,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:38:07,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:38:07,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:38:07,217 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:38:07,222 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:38:07,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:38:07,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:38:07,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:38:07,231 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:38:07,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:38:07,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:38:07,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:38:07,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:38:07,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:38:07,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:38:07,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:38:07,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:38:07,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:38:07,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:38:07,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:38:07,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:38:07,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:38:07,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:38:07,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:38:07,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:38:07,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:38:07,268 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:38:07,269 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:38:07,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:38:07,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:38:07,273 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:38:07,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:38:07,274 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:38:07,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:38:07,275 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:38:07,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:38:07,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:38:07,279 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 23:38:07,319 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:38:07,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:38:07,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:38:07,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:38:07,326 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:38:07,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:38:07,327 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:38:07,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 23:38:07,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:38:07,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:38:07,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:38:07,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:38:07,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:38:07,329 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:38:07,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:38:07,331 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:38:07,332 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:38:07,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:38:07,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:38:07,333 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:38:07,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:38:07,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:38:07,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:38:07,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:38:07,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:38:07,335 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 23:38:07,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 23:38:07,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:38:07,337 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b63905375af38d9971341930078b6c47230c38fd [2019-11-27 23:38:07,687 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:38:07,705 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:38:07,711 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:38:07,713 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:38:07,713 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:38:07,715 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/sqrt_poly2.c [2019-11-27 23:38:07,795 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f612f7f0/638786c6a8ca475f8fb26542c0e7cdd4/FLAG7a57713d8 [2019-11-27 23:38:08,311 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:38:08,313 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_poly2.c [2019-11-27 23:38:08,321 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f612f7f0/638786c6a8ca475f8fb26542c0e7cdd4/FLAG7a57713d8 [2019-11-27 23:38:08,717 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f612f7f0/638786c6a8ca475f8fb26542c0e7cdd4 [2019-11-27 23:38:08,721 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:38:08,723 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:38:08,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:38:08,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:38:08,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:38:08,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:38:08" (1/1) ... [2019-11-27 23:38:08,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@198c21d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:08, skipping insertion in model container [2019-11-27 23:38:08,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:38:08" (1/1) ... [2019-11-27 23:38:08,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:38:08,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:38:08,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:38:08,984 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:38:09,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:38:09,114 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:38:09,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:09 WrapperNode [2019-11-27 23:38:09,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:38:09,116 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:38:09,116 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:38:09,117 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:38:09,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:09" (1/1) ... [2019-11-27 23:38:09,136 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:09" (1/1) ... [2019-11-27 23:38:09,162 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:38:09,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:38:09,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:38:09,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:38:09,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:09" (1/1) ... [2019-11-27 23:38:09,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:09" (1/1) ... [2019-11-27 23:38:09,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:09" (1/1) ... [2019-11-27 23:38:09,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:09" (1/1) ... [2019-11-27 23:38:09,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:09" (1/1) ... [2019-11-27 23:38:09,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:09" (1/1) ... [2019-11-27 23:38:09,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:09" (1/1) ... [2019-11-27 23:38:09,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:38:09,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:38:09,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:38:09,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:38:09,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:38:09,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 23:38:09,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-27 23:38:09,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-27 23:38:09,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-27 23:38:09,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:38:09,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:38:09,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-27 23:38:09,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 23:38:09,551 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:38:09,551 INFO L297 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-27 23:38:09,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:38:09 BoogieIcfgContainer [2019-11-27 23:38:09,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:38:09,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:38:09,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:38:09,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:38:09,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:38:08" (1/3) ... [2019-11-27 23:38:09,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d22408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:38:09, skipping insertion in model container [2019-11-27 23:38:09,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:09" (2/3) ... [2019-11-27 23:38:09,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d22408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:38:09, skipping insertion in model container [2019-11-27 23:38:09,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:38:09" (3/3) ... [2019-11-27 23:38:09,565 INFO L109 eAbstractionObserver]: Analyzing ICFG sqrt_poly2.c [2019-11-27 23:38:09,582 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:38:09,593 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:38:09,612 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:38:09,649 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:38:09,650 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:38:09,650 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:38:09,650 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:38:09,650 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:38:09,651 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:38:09,651 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:38:09,651 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:38:09,667 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-11-27 23:38:09,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-27 23:38:09,675 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:38:09,676 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:38:09,677 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:38:09,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:38:09,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1804965382, now seen corresponding path program 1 times [2019-11-27 23:38:09,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:38:09,695 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139846984] [2019-11-27 23:38:09,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:38:09,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:38:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:38:09,919 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 23:38:09,920 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:38:09,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:38:09 BoogieIcfgContainer [2019-11-27 23:38:09,950 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:38:09,950 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:38:09,951 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:38:09,951 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:38:09,952 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:38:09" (3/4) ... [2019-11-27 23:38:09,955 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-27 23:38:09,956 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:38:09,958 INFO L168 Benchmark]: Toolchain (without parser) took 1234.50 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.1 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -98.4 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:38:09,959 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:38:09,961 INFO L168 Benchmark]: CACSL2BoogieTranslator took 391.24 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.1 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -143.2 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-11-27 23:38:09,961 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.19 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:38:09,962 INFO L168 Benchmark]: Boogie Preprocessor took 56.82 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:38:09,963 INFO L168 Benchmark]: RCFGBuilder took 332.92 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:38:09,964 INFO L168 Benchmark]: TraceAbstraction took 396.11 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2019-11-27 23:38:09,965 INFO L168 Benchmark]: Witness Printer took 5.21 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:38:09,970 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 391.24 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.1 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -143.2 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 46.19 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 56.82 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 332.92 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 396.11 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * Witness Printer took 5.21 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 9]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 33, overapproximation of someUnaryDOUBLEoperation at line 15, overapproximation of someBinaryArithmeticDOUBLEoperation at line 46, overapproximation of bitwiseAnd at line 32, overapproximation of someBinaryDOUBLEComparisonOperation at line 60. Possible FailurePath: [L12] double C0 = 1.414213538; [L13] double C1 = 0.229761391; [L14] double C2 = 1.296735525; [L15] double C3 = -0.901098370; [L16] double C4 = 0.493553400; [L17] double C5 = -0.118958666; VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] [L53] double x,y; [L55] x = __VERIFIER_nondet_double() [L26] union u x; [L27] double r; [L28] int exp; [L30] x.d = a [L32] EXPR x.i[0] [L32] exp = (x.i[0] & 0x7FF00000) >> 20 [L33] EXPR x.i[0] [L33] x.i[0] = (x.i[0] & 0x800FFFFF) | 0x3FF00000 [L34] EXPR x.d [L34] r = x.d * 0.5 [L36] r = C1+C2+(C3+(C4+C5*r)*r)*r VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] [L38] COND TRUE exp % 2 == 0 [L39] exp++ VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] [L45] x.i[0] = (exp/2 + 511) << 20 [L46] EXPR x.d [L46] r = r * x.d [L48] return r; [L48] return r; VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] [L58] y = sqrt_custom(x) [L9] COND TRUE !(cond) VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] [L9] __VERIFIER_error() VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-30f4e4a [2019-11-27 23:38:12,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:38:12,024 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:38:12,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:38:12,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:38:12,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:38:12,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:38:12,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:38:12,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:38:12,066 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:38:12,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:38:12,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:38:12,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:38:12,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:38:12,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:38:12,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:38:12,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:38:12,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:38:12,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:38:12,086 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:38:12,091 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:38:12,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:38:12,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:38:12,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:38:12,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:38:12,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:38:12,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:38:12,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:38:12,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:38:12,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:38:12,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:38:12,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:38:12,110 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:38:12,112 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:38:12,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:38:12,113 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:38:12,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:38:12,115 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:38:12,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:38:12,116 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:38:12,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:38:12,118 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-27 23:38:12,145 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:38:12,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:38:12,147 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:38:12,147 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:38:12,147 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:38:12,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:38:12,148 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:38:12,148 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:38:12,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:38:12,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:38:12,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:38:12,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:38:12,150 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-27 23:38:12,150 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-27 23:38:12,150 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:38:12,151 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:38:12,151 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:38:12,151 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:38:12,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:38:12,152 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:38:12,152 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:38:12,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:38:12,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:38:12,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:38:12,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:38:12,153 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:38:12,154 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-27 23:38:12,154 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-27 23:38:12,154 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:38:12,154 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-27 23:38:12,155 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b63905375af38d9971341930078b6c47230c38fd [2019-11-27 23:38:12,474 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:38:12,488 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:38:12,492 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:38:12,494 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:38:12,495 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:38:12,496 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/sqrt_poly2.c [2019-11-27 23:38:12,569 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4469023b3/e942f545cbdf42fd8f09383f90ebd5d8/FLAG287e76eef [2019-11-27 23:38:13,069 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:38:13,069 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_poly2.c [2019-11-27 23:38:13,077 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4469023b3/e942f545cbdf42fd8f09383f90ebd5d8/FLAG287e76eef [2019-11-27 23:38:13,440 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4469023b3/e942f545cbdf42fd8f09383f90ebd5d8 [2019-11-27 23:38:13,444 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:38:13,446 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:38:13,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:38:13,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:38:13,456 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:38:13,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:38:13" (1/1) ... [2019-11-27 23:38:13,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f897cab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:13, skipping insertion in model container [2019-11-27 23:38:13,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:38:13" (1/1) ... [2019-11-27 23:38:13,470 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:38:13,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:38:13,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:38:13,694 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:38:13,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:38:13,828 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:38:13,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:13 WrapperNode [2019-11-27 23:38:13,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:38:13,830 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:38:13,830 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:38:13,830 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:38:13,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:13" (1/1) ... [2019-11-27 23:38:13,852 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:13" (1/1) ... [2019-11-27 23:38:13,877 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:38:13,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:38:13,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:38:13,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:38:13,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:13" (1/1) ... [2019-11-27 23:38:13,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:13" (1/1) ... [2019-11-27 23:38:13,890 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:13" (1/1) ... [2019-11-27 23:38:13,890 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:13" (1/1) ... [2019-11-27 23:38:13,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:13" (1/1) ... [2019-11-27 23:38:13,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:13" (1/1) ... [2019-11-27 23:38:13,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:13" (1/1) ... [2019-11-27 23:38:13,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:38:13,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:38:13,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:38:13,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:38:13,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:38:13,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-11-27 23:38:13,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-27 23:38:13,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 23:38:13,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-27 23:38:13,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:38:13,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:38:13,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 23:38:13,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-27 23:38:18,863 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:38:18,864 INFO L297 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-27 23:38:18,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:38:18 BoogieIcfgContainer [2019-11-27 23:38:18,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:38:18,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:38:18,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:38:18,870 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:38:18,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:38:13" (1/3) ... [2019-11-27 23:38:18,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb193db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:38:18, skipping insertion in model container [2019-11-27 23:38:18,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:13" (2/3) ... [2019-11-27 23:38:18,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb193db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:38:18, skipping insertion in model container [2019-11-27 23:38:18,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:38:18" (3/3) ... [2019-11-27 23:38:18,874 INFO L109 eAbstractionObserver]: Analyzing ICFG sqrt_poly2.c [2019-11-27 23:38:18,884 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:38:18,890 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:38:18,903 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:38:18,929 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:38:18,929 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:38:18,929 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:38:18,929 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:38:18,930 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:38:18,930 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:38:18,930 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:38:18,931 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:38:18,945 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-11-27 23:38:18,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-27 23:38:18,951 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:38:18,951 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:38:18,952 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:38:18,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:38:18,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1804965382, now seen corresponding path program 1 times [2019-11-27 23:38:18,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:38:18,969 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1458436015] [2019-11-27 23:38:18,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-27 23:38:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:38:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:38:36,837 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-27 23:38:36,838 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:38:37,039 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-27 23:38:37,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:38:37 BoogieIcfgContainer [2019-11-27 23:38:37,081 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:38:37,082 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:38:37,082 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:38:37,082 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:38:37,083 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:38:18" (3/4) ... [2019-11-27 23:38:37,085 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 23:38:37,140 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 23:38:37,141 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:38:37,143 INFO L168 Benchmark]: Toolchain (without parser) took 23696.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 953.7 MB in the beginning and 1.1 GB in the end (delta: -112.8 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:38:37,144 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:38:37,145 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 953.7 MB in the beginning and 1.1 GB in the end (delta: -166.4 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:38:37,146 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:38:37,146 INFO L168 Benchmark]: Boogie Preprocessor took 32.09 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:38:37,147 INFO L168 Benchmark]: RCFGBuilder took 4955.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. [2019-11-27 23:38:37,148 INFO L168 Benchmark]: TraceAbstraction took 18214.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:38:37,148 INFO L168 Benchmark]: Witness Printer took 58.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:38:37,151 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 377.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 953.7 MB in the beginning and 1.1 GB in the end (delta: -166.4 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 47.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.09 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 4955.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 18214.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Witness Printer took 58.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 9]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] double C0 = 1.414213538; [L13] double C1 = 0.229761391; [L14] double C2 = 1.296735525; [L15] double C3 = -0.901098370; [L16] double C4 = 0.493553400; [L17] double C5 = -0.118958666; VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L53] double x,y; [L55] x = __VERIFIER_nondet_double() [L26] union u x; [L27] double r; [L28] int exp; [L30] x.d = a [L32] EXPR x.i[0] [L32] exp = (x.i[0] & 0x7FF00000) >> 20 [L33] EXPR x.i[0] [L33] x.i[0] = (x.i[0] & 0x800FFFFF) | 0x3FF00000 [L34] EXPR x.d [L34] r = x.d * 0.5 [L36] r = C1+C2+(C3+(C4+C5*r)*r)*r VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L38] COND TRUE exp % 2 == 0 [L39] exp++ VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L45] x.i[0] = (exp/2 + 511) << 20 [L46] EXPR x.d [L46] r = r * x.d [L48] return r; [L48] return r; VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L58] y = sqrt_custom(x) [L9] COND TRUE !(cond) VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L9] __VERIFIER_error() VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Result: UNSAFE, OverallTime: 18.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 7.4s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...