./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/square_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 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/floats-cdfpl/square_8.i -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 847ec304644081d839ca7e80209d45b391ec9937 ......................................................................................................................................................................................................................... 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/floats-cdfpl/square_8.i -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 847ec304644081d839ca7e80209d45b391ec9937 ......................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-19 21:08:46,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 21:08:46,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 21:08:46,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 21:08:46,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 21:08:46,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 21:08:46,676 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 21:08:46,678 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 21:08:46,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 21:08:46,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 21:08:46,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 21:08:46,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 21:08:46,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 21:08:46,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 21:08:46,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 21:08:46,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 21:08:46,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 21:08:46,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 21:08:46,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 21:08:46,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 21:08:46,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 21:08:46,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 21:08:46,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 21:08:46,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 21:08:46,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 21:08:46,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 21:08:46,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 21:08:46,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 21:08:46,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 21:08:46,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 21:08:46,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 21:08:46,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 21:08:46,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 21:08:46,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 21:08:46,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 21:08:46,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 21:08:46,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 21:08:46,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 21:08:46,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 21:08:46,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 21:08:46,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 21:08:46,714 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-19 21:08:46,735 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 21:08:46,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 21:08:46,738 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 21:08:46,738 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 21:08:46,739 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 21:08:46,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 21:08:46,739 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 21:08:46,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 21:08:46,740 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 21:08:46,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 21:08:46,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 21:08:46,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 21:08:46,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 21:08:46,742 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 21:08:46,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 21:08:46,743 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 21:08:46,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 21:08:46,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 21:08:46,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 21:08:46,744 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 21:08:46,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 21:08:46,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 21:08:46,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 21:08:46,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 21:08:46,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 21:08:46,746 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 21:08:46,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 21:08:46,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 21:08:46,747 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 -> 847ec304644081d839ca7e80209d45b391ec9937 [2019-11-19 21:08:47,061 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 21:08:47,075 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 21:08:47,078 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 21:08:47,081 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 21:08:47,081 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 21:08:47,082 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/square_8.i [2019-11-19 21:08:47,153 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/967a8cb51/378abcfe40ce45c7956a2d879873f721/FLAG726a90316 [2019-11-19 21:08:47,606 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 21:08:47,608 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/square_8.i [2019-11-19 21:08:47,614 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/967a8cb51/378abcfe40ce45c7956a2d879873f721/FLAG726a90316 [2019-11-19 21:08:48,000 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/967a8cb51/378abcfe40ce45c7956a2d879873f721 [2019-11-19 21:08:48,003 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 21:08:48,005 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 21:08:48,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 21:08:48,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 21:08:48,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 21:08:48,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:08:48" (1/1) ... [2019-11-19 21:08:48,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18d34026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:48, skipping insertion in model container [2019-11-19 21:08:48,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:08:48" (1/1) ... [2019-11-19 21:08:48,021 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 21:08:48,038 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 21:08:48,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 21:08:48,201 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 21:08:48,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 21:08:48,233 INFO L192 MainTranslator]: Completed translation [2019-11-19 21:08:48,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:48 WrapperNode [2019-11-19 21:08:48,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 21:08:48,235 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 21:08:48,235 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 21:08:48,235 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 21:08:48,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:48" (1/1) ... [2019-11-19 21:08:48,250 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:48" (1/1) ... [2019-11-19 21:08:48,327 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 21:08:48,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 21:08:48,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 21:08:48,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 21:08:48,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:48" (1/1) ... [2019-11-19 21:08:48,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:48" (1/1) ... [2019-11-19 21:08:48,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:48" (1/1) ... [2019-11-19 21:08:48,340 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:48" (1/1) ... [2019-11-19 21:08:48,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:48" (1/1) ... [2019-11-19 21:08:48,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:48" (1/1) ... [2019-11-19 21:08:48,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:48" (1/1) ... [2019-11-19 21:08:48,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 21:08:48,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 21:08:48,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 21:08:48,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 21:08:48,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:48" (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 [2019-11-19 21:08:48,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 21:08:48,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 21:08:48,546 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 21:08:48,546 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-19 21:08:48,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:08:48 BoogieIcfgContainer [2019-11-19 21:08:48,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 21:08:48,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 21:08:48,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 21:08:48,551 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 21:08:48,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:08:48" (1/3) ... [2019-11-19 21:08:48,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a067ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:08:48, skipping insertion in model container [2019-11-19 21:08:48,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:48" (2/3) ... [2019-11-19 21:08:48,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a067ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:08:48, skipping insertion in model container [2019-11-19 21:08:48,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:08:48" (3/3) ... [2019-11-19 21:08:48,555 INFO L109 eAbstractionObserver]: Analyzing ICFG square_8.i [2019-11-19 21:08:48,562 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 21:08:48,568 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-19 21:08:48,579 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-19 21:08:48,608 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 21:08:48,608 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 21:08:48,608 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 21:08:48,609 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 21:08:48,609 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 21:08:48,609 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 21:08:48,609 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 21:08:48,610 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 21:08:48,625 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-11-19 21:08:48,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-19 21:08:48,631 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:08:48,632 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-19 21:08:48,633 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:08:48,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:08:48,639 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-11-19 21:08:48,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 21:08:48,649 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567141729] [2019-11-19 21:08:48,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 21:08:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 21:08:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 21:08:48,755 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 21:08:48,755 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-19 21:08:48,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 09:08:48 BoogieIcfgContainer [2019-11-19 21:08:48,771 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 21:08:48,772 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 21:08:48,772 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 21:08:48,772 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 21:08:48,772 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:08:48" (3/4) ... [2019-11-19 21:08:48,776 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-19 21:08:48,777 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 21:08:48,782 INFO L168 Benchmark]: Toolchain (without parser) took 773.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -131.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 21:08:48,783 INFO L168 Benchmark]: CDTParser took 0.52 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. [2019-11-19 21:08:48,784 INFO L168 Benchmark]: CACSL2BoogieTranslator took 228.94 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-19 21:08:48,786 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -175.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-19 21:08:48,787 INFO L168 Benchmark]: Boogie Preprocessor took 26.60 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. [2019-11-19 21:08:48,788 INFO L168 Benchmark]: RCFGBuilder took 191.81 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: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 11.5 GB. [2019-11-19 21:08:48,789 INFO L168 Benchmark]: TraceAbstraction took 222.42 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: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 11.5 GB. [2019-11-19 21:08:48,789 INFO L168 Benchmark]: Witness Printer took 5.25 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. [2019-11-19 21:08:48,794 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 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 228.94 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 93.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -175.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.60 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. * RCFGBuilder took 191.81 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: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 222.42 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: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 11.5 GB. * Witness Printer took 5.25 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 14, overapproximation of someBinaryArithmeticFLOAToperation at line 12. Possible FailurePath: [L6] float IN = __VERIFIER_nondet_float(); [L9] float x = IN; [L11-L12] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L14] COND TRUE !(result >= 0.0f && result < 1.5f) [L15] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 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 0.1.24-678e011 [2019-11-19 21:08:50,755 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 21:08:50,757 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 21:08:50,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 21:08:50,771 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 21:08:50,772 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 21:08:50,774 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 21:08:50,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 21:08:50,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 21:08:50,779 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 21:08:50,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 21:08:50,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 21:08:50,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 21:08:50,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 21:08:50,785 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 21:08:50,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 21:08:50,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 21:08:50,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 21:08:50,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 21:08:50,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 21:08:50,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 21:08:50,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 21:08:50,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 21:08:50,804 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 21:08:50,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 21:08:50,812 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 21:08:50,812 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 21:08:50,814 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 21:08:50,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 21:08:50,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 21:08:50,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 21:08:50,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 21:08:50,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 21:08:50,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 21:08:50,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 21:08:50,826 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 21:08:50,827 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 21:08:50,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 21:08:50,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 21:08:50,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 21:08:50,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 21:08:50,832 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-19 21:08:50,861 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 21:08:50,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 21:08:50,863 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 21:08:50,863 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 21:08:50,863 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 21:08:50,864 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 21:08:50,864 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 21:08:50,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 21:08:50,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 21:08:50,865 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 21:08:50,866 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 21:08:50,866 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 21:08:50,867 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-19 21:08:50,867 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-19 21:08:50,867 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 21:08:50,867 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 21:08:50,868 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 21:08:50,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 21:08:50,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 21:08:50,868 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 21:08:50,869 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 21:08:50,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 21:08:50,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 21:08:50,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 21:08:50,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 21:08:50,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 21:08:50,870 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-19 21:08:50,870 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-19 21:08:50,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 21:08:50,871 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-19 21:08:50,871 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 -> 847ec304644081d839ca7e80209d45b391ec9937 [2019-11-19 21:08:51,220 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 21:08:51,234 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 21:08:51,238 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 21:08:51,240 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 21:08:51,240 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 21:08:51,241 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/square_8.i [2019-11-19 21:08:51,325 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfb607161/171e6e9b79ca4bb19190ac1305dd3bd1/FLAG91450ad27 [2019-11-19 21:08:51,816 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 21:08:51,817 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/square_8.i [2019-11-19 21:08:51,823 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfb607161/171e6e9b79ca4bb19190ac1305dd3bd1/FLAG91450ad27 [2019-11-19 21:08:52,197 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfb607161/171e6e9b79ca4bb19190ac1305dd3bd1 [2019-11-19 21:08:52,200 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 21:08:52,202 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 21:08:52,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 21:08:52,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 21:08:52,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 21:08:52,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:08:52" (1/1) ... [2019-11-19 21:08:52,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69ddbb6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:52, skipping insertion in model container [2019-11-19 21:08:52,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:08:52" (1/1) ... [2019-11-19 21:08:52,220 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 21:08:52,238 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 21:08:52,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 21:08:52,457 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 21:08:52,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 21:08:52,501 INFO L192 MainTranslator]: Completed translation [2019-11-19 21:08:52,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:52 WrapperNode [2019-11-19 21:08:52,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 21:08:52,502 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 21:08:52,502 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 21:08:52,502 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 21:08:52,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:52" (1/1) ... [2019-11-19 21:08:52,521 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:52" (1/1) ... [2019-11-19 21:08:52,610 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 21:08:52,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 21:08:52,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 21:08:52,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 21:08:52,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:52" (1/1) ... [2019-11-19 21:08:52,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:52" (1/1) ... [2019-11-19 21:08:52,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:52" (1/1) ... [2019-11-19 21:08:52,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:52" (1/1) ... [2019-11-19 21:08:52,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:52" (1/1) ... [2019-11-19 21:08:52,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:52" (1/1) ... [2019-11-19 21:08:52,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:52" (1/1) ... [2019-11-19 21:08:52,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 21:08:52,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 21:08:52,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 21:08:52,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 21:08:52,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:52" (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 [2019-11-19 21:08:52,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 21:08:52,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 21:08:54,899 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 21:08:54,900 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-19 21:08:54,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:08:54 BoogieIcfgContainer [2019-11-19 21:08:54,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 21:08:54,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 21:08:54,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 21:08:54,905 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 21:08:54,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:08:52" (1/3) ... [2019-11-19 21:08:54,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31919b1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:08:54, skipping insertion in model container [2019-11-19 21:08:54,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:52" (2/3) ... [2019-11-19 21:08:54,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31919b1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:08:54, skipping insertion in model container [2019-11-19 21:08:54,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:08:54" (3/3) ... [2019-11-19 21:08:54,909 INFO L109 eAbstractionObserver]: Analyzing ICFG square_8.i [2019-11-19 21:08:54,917 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 21:08:54,922 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-19 21:08:54,934 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-19 21:08:54,962 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 21:08:54,962 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 21:08:54,962 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 21:08:54,962 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 21:08:54,963 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 21:08:54,963 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 21:08:54,963 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 21:08:54,963 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 21:08:54,976 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-11-19 21:08:54,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-19 21:08:54,982 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:08:54,983 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-19 21:08:54,983 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:08:54,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:08:54,988 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-11-19 21:08:54,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 21:08:54,998 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87756836] [2019-11-19 21:08:54,998 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 [2019-11-19 21:09:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:09:30,135 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 21:09:30,143 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 21:09:32,297 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 8 24)) (= c_ULTIMATE.start_main_~result~0 (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0))) (fp.lt ULTIMATE.start_main_~x~0 .cse0)))) is different from false [2019-11-19 21:09:34,364 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 8 24)) (= c_ULTIMATE.start_main_~result~0 (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0))) (fp.lt ULTIMATE.start_main_~x~0 .cse0)))) is different from true [2019-11-19 21:09:36,454 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 21:09:46,958 WARN L838 $PredicateComparison]: unable to prove that (or (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (_ +zero 8 24))) (fp.lt ULTIMATE.start_main_~x~0 .cse0)))) (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 8 24)) (fp.lt ULTIMATE.start_main_~x~0 .cse1))))) is different from false [2019-11-19 21:09:49,044 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (_ +zero 8 24))) (fp.lt ULTIMATE.start_main_~x~0 .cse0)))) (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 8 24)) (fp.lt ULTIMATE.start_main_~x~0 .cse1))))) is different from true [2019-11-19 21:09:49,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:09:49,048 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 21:09:49,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:09:49,073 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [87756836] [2019-11-19 21:09:49,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 21:09:49,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2019-11-19 21:09:49,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410701852] [2019-11-19 21:09:49,080 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 21:09:49,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 21:09:49,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 21:09:49,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=3, Unknown=4, NotChecked=6, Total=20 [2019-11-19 21:09:49,093 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 5 states. [2019-11-19 21:09:51,196 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 8 24)) (= c_ULTIMATE.start_main_~result~0 (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0))) (fp.lt ULTIMATE.start_main_~x~0 .cse0)))) (fp.geq c_ULTIMATE.start_main_~result~0 (_ +zero 8 24)) (fp.lt c_ULTIMATE.start_main_~result~0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))) is different from false [2019-11-19 21:09:51,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 21:09:51,209 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2019-11-19 21:09:51,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 21:09:51,210 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 3 [2019-11-19 21:09:51,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 21:09:51,218 INFO L225 Difference]: With dead ends: 12 [2019-11-19 21:09:51,219 INFO L226 Difference]: Without dead ends: 0 [2019-11-19 21:09:51,222 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=9, Invalid=4, Unknown=5, NotChecked=12, Total=30 [2019-11-19 21:09:51,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-19 21:09:51,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-19 21:09:51,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-19 21:09:51,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-19 21:09:51,251 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 3 [2019-11-19 21:09:51,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 21:09:51,252 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 21:09:51,252 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 21:09:51,252 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-19 21:09:51,253 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-19 21:09:51,453 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-19 21:09:51,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-19 21:09:51,498 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-19 21:09:51,498 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-19 21:09:51,498 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-19 21:09:51,499 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2019-11-19 21:09:51,499 INFO L447 ceAbstractionStarter]: At program point L17(lines 4 18) the Hoare annotation is: true [2019-11-19 21:09:51,499 INFO L444 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2019-11-19 21:09:51,500 INFO L444 ceAbstractionStarter]: For program point L14(lines 14 15) no Hoare annotation was computed. [2019-11-19 21:09:51,500 INFO L444 ceAbstractionStarter]: For program point L14-2(lines 14 15) no Hoare annotation was computed. [2019-11-19 21:09:51,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 09:09:51 BoogieIcfgContainer [2019-11-19 21:09:51,509 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 21:09:51,510 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 21:09:51,510 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 21:09:51,510 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 21:09:51,511 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:08:54" (3/4) ... [2019-11-19 21:09:51,516 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-19 21:09:51,537 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-19 21:09:51,538 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-19 21:09:51,588 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-19 21:09:51,588 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 21:09:51,593 INFO L168 Benchmark]: Toolchain (without parser) took 59388.37 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.6 MB). Free memory was 961.7 MB in the beginning and 1.0 GB in the end (delta: -65.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-19 21:09:51,594 INFO L168 Benchmark]: CDTParser took 0.28 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. [2019-11-19 21:09:51,596 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.74 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-19 21:09:51,597 INFO L168 Benchmark]: Boogie Procedure Inliner took 107.96 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.6 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -133.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-19 21:09:51,603 INFO L168 Benchmark]: Boogie Preprocessor took 25.68 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-11-19 21:09:51,604 INFO L168 Benchmark]: RCFGBuilder took 2264.60 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: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2019-11-19 21:09:51,605 INFO L168 Benchmark]: TraceAbstraction took 56607.53 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 11.5 GB. [2019-11-19 21:09:51,606 INFO L168 Benchmark]: Witness Printer took 78.54 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-11-19 21:09:51,615 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 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 298.74 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 107.96 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.6 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -133.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.68 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2264.60 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: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 56607.53 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 11.5 GB. * Witness Printer took 78.54 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Result: SAFE, OverallTime: 56.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 4 SDtfs, 0 SDslu, 3 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 34.9s SatisfiabilityAnalysisTime, 19.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 4 ConstructedInterpolants, 2 QuantifiedInterpolants, 420 SizeOfPredicates, 3 NumberOfNonLiveVariables, 8 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...