./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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-cbmc-regression/float-to-double2.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 9ab995f7fc826665e07ee96ac8969470b0927c50 ....................................................................................................................................................................................................................................... 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 -ea -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-cbmc-regression/float-to-double2.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 9ab995f7fc826665e07ee96ac8969470b0927c50 ................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 17:20:48,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:20:48,596 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:20:48,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:20:48,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:20:48,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:20:48,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:20:48,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:20:48,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:20:48,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:20:48,639 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:20:48,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:20:48,641 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:20:48,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:20:48,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:20:48,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:20:48,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:20:48,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:20:48,656 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:20:48,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:20:48,666 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:20:48,670 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:20:48,672 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:20:48,673 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:20:48,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:20:48,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:20:48,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:20:48,679 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:20:48,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:20:48,680 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:20:48,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:20:48,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:20:48,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:20:48,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:20:48,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:20:48,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:20:48,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:20:48,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:20:48,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:20:48,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:20:48,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:20:48,691 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 17:20:48,709 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:20:48,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:20:48,711 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:20:48,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:20:48,712 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:20:48,712 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:20:48,713 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:20:48,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 17:20:48,713 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:20:48,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:20:48,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:20:48,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:20:48,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:20:48,715 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:20:48,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:20:48,715 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:20:48,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:20:48,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:20:48,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:20:48,717 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:20:48,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:20:48,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:20:48,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:20:48,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:20:48,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:20:48,718 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 17:20:48,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 17:20:48,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:20:48,719 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:20:48,720 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 -> 9ab995f7fc826665e07ee96ac8969470b0927c50 [2020-07-28 17:20:49,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:20:49,085 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:20:49,089 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:20:49,090 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:20:49,094 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:20:49,095 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c [2020-07-28 17:20:49,149 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5668a00f8/ec18f5e30f8242d7a9a9a9776fa52583/FLAG68d2ffb97 [2020-07-28 17:20:49,602 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:20:49,606 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c [2020-07-28 17:20:49,613 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5668a00f8/ec18f5e30f8242d7a9a9a9776fa52583/FLAG68d2ffb97 [2020-07-28 17:20:49,996 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5668a00f8/ec18f5e30f8242d7a9a9a9776fa52583 [2020-07-28 17:20:50,000 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:20:50,003 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:20:50,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:20:50,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:20:50,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:20:50,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:20:49" (1/1) ... [2020-07-28 17:20:50,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2798d930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:50, skipping insertion in model container [2020-07-28 17:20:50,015 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:20:49" (1/1) ... [2020-07-28 17:20:50,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:20:50,039 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:20:50,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:20:50,230 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:20:50,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:20:50,265 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:20:50,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:50 WrapperNode [2020-07-28 17:20:50,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:20:50,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:20:50,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:20:50,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:20:50,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:50" (1/1) ... [2020-07-28 17:20:50,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:50" (1/1) ... [2020-07-28 17:20:50,369 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:20:50,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:20:50,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:20:50,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:20:50,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:50" (1/1) ... [2020-07-28 17:20:50,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:50" (1/1) ... [2020-07-28 17:20:50,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:50" (1/1) ... [2020-07-28 17:20:50,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:50" (1/1) ... [2020-07-28 17:20:50,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:50" (1/1) ... [2020-07-28 17:20:50,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:50" (1/1) ... [2020-07-28 17:20:50,388 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:50" (1/1) ... [2020-07-28 17:20:50,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:20:50,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:20:50,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:20:50,390 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:20:50,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:50" (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 [2020-07-28 17:20:50,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:20:50,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:20:50,595 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:20:50,596 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-28 17:20:50,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:20:50 BoogieIcfgContainer [2020-07-28 17:20:50,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:20:50,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:20:50,601 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:20:50,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:20:50,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:20:49" (1/3) ... [2020-07-28 17:20:50,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f029ca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:20:50, skipping insertion in model container [2020-07-28 17:20:50,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:50" (2/3) ... [2020-07-28 17:20:50,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f029ca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:20:50, skipping insertion in model container [2020-07-28 17:20:50,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:20:50" (3/3) ... [2020-07-28 17:20:50,608 INFO L109 eAbstractionObserver]: Analyzing ICFG float-to-double2.c [2020-07-28 17:20:50,618 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:20:50,623 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:20:50,634 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:20:50,654 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:20:50,654 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:20:50,654 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:20:50,654 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:20:50,654 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:20:50,655 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:20:50,655 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:20:50,655 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:20:50,667 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2020-07-28 17:20:50,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-07-28 17:20:50,672 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:20:50,673 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-07-28 17:20:50,673 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:20:50,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:20:50,679 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2020-07-28 17:20:50,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:20:50,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824069107] [2020-07-28 17:20:50,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:20:50,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:20:50,755 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:20:50,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:20:50,758 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:20:50,777 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-28 17:20:50,777 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 17:20:50,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 17:20:50,794 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:20:50,794 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-28 17:20:50,794 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-28 17:20:50,794 WARN L170 areAnnotationChecker]: L9-1 has no Hoare annotation [2020-07-28 17:20:50,794 WARN L170 areAnnotationChecker]: L9-1 has no Hoare annotation [2020-07-28 17:20:50,794 WARN L170 areAnnotationChecker]: L9-3 has no Hoare annotation [2020-07-28 17:20:50,795 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-28 17:20:50,795 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:20:50,795 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 17:20:50,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:20:50 BoogieIcfgContainer [2020-07-28 17:20:50,797 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:20:50,798 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:20:50,798 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:20:50,798 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:20:50,799 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:20:50" (3/4) ... [2020-07-28 17:20:50,802 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-07-28 17:20:50,802 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:20:50,806 INFO L168 Benchmark]: Toolchain (without parser) took 803.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 956.2 MB in the beginning and 1.1 GB in the end (delta: -136.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:20:50,807 INFO L168 Benchmark]: CDTParser took 0.76 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:20:50,808 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.39 ms. Allocated memory is still 1.0 GB. Free memory was 956.2 MB in the beginning and 945.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:50,809 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 945.5 MB in the beginning and 1.1 GB in the end (delta: -184.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:50,810 INFO L168 Benchmark]: Boogie Preprocessor took 20.20 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. [2020-07-28 17:20:50,811 INFO L168 Benchmark]: RCFGBuilder took 209.65 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: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:50,811 INFO L168 Benchmark]: TraceAbstraction took 196.91 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: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:50,812 INFO L168 Benchmark]: Witness Printer took 4.38 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. [2020-07-28 17:20:50,816 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.76 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 262.39 ms. Allocated memory is still 1.0 GB. Free memory was 956.2 MB in the beginning and 945.5 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 101.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 945.5 MB in the beginning and 1.1 GB in the end (delta: -184.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.20 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 209.65 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: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 196.91 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: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. * Witness Printer took 4.38 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: 9]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 9, overapproximation of someUnaryDOUBLEoperation at line 6, overapproximation of someUnaryFLOAToperation at line 5. Possible FailurePath: [L5] float f = -0x1.0p-127f; [L6] double d = -0x1.0p-127; [L7] double fp = (double)f; [L9] COND TRUE !(d == fp) [L9] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 17:20:52,780 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:20:52,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:20:52,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:20:52,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:20:52,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:20:52,798 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:20:52,801 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:20:52,803 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:20:52,804 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:20:52,805 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:20:52,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:20:52,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:20:52,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:20:52,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:20:52,811 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:20:52,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:20:52,813 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:20:52,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:20:52,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:20:52,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:20:52,822 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:20:52,823 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:20:52,826 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:20:52,832 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:20:52,832 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:20:52,832 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:20:52,834 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:20:52,834 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:20:52,835 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:20:52,836 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:20:52,837 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:20:52,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:20:52,841 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:20:52,845 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:20:52,845 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:20:52,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:20:52,846 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:20:52,846 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:20:52,847 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:20:52,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:20:52,850 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-07-28 17:20:52,876 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:20:52,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:20:52,878 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:20:52,878 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:20:52,879 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:20:52,879 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:20:52,879 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:20:52,879 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:20:52,879 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:20:52,880 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:20:52,881 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:20:52,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:20:52,881 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-07-28 17:20:52,882 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-07-28 17:20:52,882 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:20:52,882 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:20:52,882 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:20:52,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:20:52,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:20:52,883 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:20:52,883 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:20:52,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:20:52,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:20:52,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:20:52,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:20:52,884 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:20:52,884 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-07-28 17:20:52,885 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-07-28 17:20:52,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:20:52,885 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:20:52,885 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-28 17:20:52,885 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 -> 9ab995f7fc826665e07ee96ac8969470b0927c50 [2020-07-28 17:20:53,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:20:53,203 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:20:53,207 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:20:53,209 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:20:53,211 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:20:53,212 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c [2020-07-28 17:20:53,288 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75d6f002e/6d19043070684dacb3ad29b60fd80af7/FLAGe0a28f879 [2020-07-28 17:20:53,755 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:20:53,756 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c [2020-07-28 17:20:53,761 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75d6f002e/6d19043070684dacb3ad29b60fd80af7/FLAGe0a28f879 [2020-07-28 17:20:54,134 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75d6f002e/6d19043070684dacb3ad29b60fd80af7 [2020-07-28 17:20:54,138 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:20:54,141 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:20:54,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:20:54,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:20:54,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:20:54,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:20:54" (1/1) ... [2020-07-28 17:20:54,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cb8b780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:54, skipping insertion in model container [2020-07-28 17:20:54,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:20:54" (1/1) ... [2020-07-28 17:20:54,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:20:54,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:20:54,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:20:54,358 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:20:54,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:20:54,395 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:20:54,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:54 WrapperNode [2020-07-28 17:20:54,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:20:54,397 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:20:54,397 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:20:54,398 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:20:54,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:54" (1/1) ... [2020-07-28 17:20:54,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:54" (1/1) ... [2020-07-28 17:20:54,495 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:20:54,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:20:54,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:20:54,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:20:54,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:54" (1/1) ... [2020-07-28 17:20:54,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:54" (1/1) ... [2020-07-28 17:20:54,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:54" (1/1) ... [2020-07-28 17:20:54,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:54" (1/1) ... [2020-07-28 17:20:54,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:54" (1/1) ... [2020-07-28 17:20:54,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:54" (1/1) ... [2020-07-28 17:20:54,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:54" (1/1) ... [2020-07-28 17:20:54,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:20:54,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:20:54,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:20:54,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:20:54,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:54" (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 [2020-07-28 17:20:54,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:20:54,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:20:54,803 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:20:54,803 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-28 17:20:54,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:20:54 BoogieIcfgContainer [2020-07-28 17:20:54,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:20:54,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:20:54,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:20:54,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:20:54,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:20:54" (1/3) ... [2020-07-28 17:20:54,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b12c692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:20:54, skipping insertion in model container [2020-07-28 17:20:54,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:54" (2/3) ... [2020-07-28 17:20:54,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b12c692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:20:54, skipping insertion in model container [2020-07-28 17:20:54,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:20:54" (3/3) ... [2020-07-28 17:20:54,849 INFO L109 eAbstractionObserver]: Analyzing ICFG float-to-double2.c [2020-07-28 17:20:54,877 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:20:54,896 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:20:54,931 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:20:54,956 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:20:54,956 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:20:54,956 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:20:54,956 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:20:54,956 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:20:54,957 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:20:54,957 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:20:54,957 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:20:54,969 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-07-28 17:20:54,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-07-28 17:20:54,974 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:20:54,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-07-28 17:20:54,976 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:20:54,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:20:54,981 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-07-28 17:20:54,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:20:54,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [119644832] [2020-07-28 17:20:54,993 INFO L95 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 [2020-07-28 17:20:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:20:55,039 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-28 17:20:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:20:55,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 17:20:55,224 INFO L280 TraceCheckUtils]: 0: Hoare triple {12#true} currentRoundingMode := ~roundNearestTiesToEven; {12#true} is VALID [2020-07-28 17:20:55,240 INFO L280 TraceCheckUtils]: 1: Hoare triple {12#true} havoc main_#res;havoc main_~f~0, main_~d~0, main_~fp~0;main_~f~0 := ~fp.neg~FLOAT(~to_fp~FLOAT(currentRoundingMode, 5.8774717541114375E-39));main_~d~0 := ~fp.neg~DOUBLE(~to_fp~DOUBLE(currentRoundingMode, 5.8774717541114375E-39));main_~fp~0 := ~convertFLOATToDOUBLE(currentRoundingMode, main_~f~0); {20#(exists ((currentRoundingMode RoundingMode)) (and (= ((_ to_fp 11 53) currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode (/ 1.0 170141183460469231731687303715884105728.0)))) ULTIMATE.start_main_~fp~0) (= (fp.neg ((_ to_fp 11 53) currentRoundingMode (/ 1.0 170141183460469231731687303715884105728.0))) ULTIMATE.start_main_~d~0)))} is VALID [2020-07-28 17:20:55,244 INFO L280 TraceCheckUtils]: 2: Hoare triple {20#(exists ((currentRoundingMode RoundingMode)) (and (= ((_ to_fp 11 53) currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode (/ 1.0 170141183460469231731687303715884105728.0)))) ULTIMATE.start_main_~fp~0) (= (fp.neg ((_ to_fp 11 53) currentRoundingMode (/ 1.0 170141183460469231731687303715884105728.0))) ULTIMATE.start_main_~d~0)))} assume !~fp.eq~DOUBLE(main_~d~0, main_~fp~0); {13#false} is VALID [2020-07-28 17:20:55,244 INFO L280 TraceCheckUtils]: 3: Hoare triple {13#false} assume !false; {13#false} is VALID [2020-07-28 17:20:55,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:20:55,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 17:20:55,459 INFO L280 TraceCheckUtils]: 3: Hoare triple {13#false} assume !false; {13#false} is VALID [2020-07-28 17:20:55,460 INFO L280 TraceCheckUtils]: 2: Hoare triple {30#(fp.eq ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~fp~0)} assume !~fp.eq~DOUBLE(main_~d~0, main_~fp~0); {13#false} is VALID [2020-07-28 17:20:55,505 INFO L280 TraceCheckUtils]: 1: Hoare triple {12#true} havoc main_#res;havoc main_~f~0, main_~d~0, main_~fp~0;main_~f~0 := ~fp.neg~FLOAT(~to_fp~FLOAT(currentRoundingMode, 5.8774717541114375E-39));main_~d~0 := ~fp.neg~DOUBLE(~to_fp~DOUBLE(currentRoundingMode, 5.8774717541114375E-39));main_~fp~0 := ~convertFLOATToDOUBLE(currentRoundingMode, main_~f~0); {30#(fp.eq ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~fp~0)} is VALID [2020-07-28 17:20:55,505 INFO L280 TraceCheckUtils]: 0: Hoare triple {12#true} currentRoundingMode := ~roundNearestTiesToEven; {12#true} is VALID [2020-07-28 17:20:55,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:20:55,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [119644832] [2020-07-28 17:20:55,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:20:55,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-07-28 17:20:55,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623225169] [2020-07-28 17:20:55,517 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-07-28 17:20:55,519 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:20:55,523 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-28 17:20:55,588 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 6 edges. 6 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:20:55,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-28 17:20:55,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 17:20:55,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-28 17:20:55,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-28 17:20:55,600 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2020-07-28 17:20:55,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:20:55,720 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2020-07-28 17:20:55,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-28 17:20:55,720 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-07-28 17:20:55,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:20:55,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 17:20:55,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2020-07-28 17:20:55,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 17:20:55,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2020-07-28 17:20:55,730 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 12 transitions. [2020-07-28 17:20:55,792 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:20:55,799 INFO L225 Difference]: With dead ends: 13 [2020-07-28 17:20:55,799 INFO L226 Difference]: Without dead ends: 0 [2020-07-28 17:20:55,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-28 17:20:55,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-28 17:20:55,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-28 17:20:55,826 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:20:55,826 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-28 17:20:55,826 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:20:55,827 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:20:55,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:20:55,827 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:20:55,827 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:20:55,828 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:20:55,828 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:20:55,828 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:20:55,828 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:20:55,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:20:55,828 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:20:55,829 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:20:55,829 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:20:55,829 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:20:55,829 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:20:55,829 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:20:55,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-28 17:20:55,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-28 17:20:55,831 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2020-07-28 17:20:55,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:20:55,831 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-28 17:20:55,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-28 17:20:55,832 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:20:55,832 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:20:56,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-07-28 17:20:56,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-28 17:20:56,084 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-28 17:20:56,084 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-07-28 17:20:56,084 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-28 17:20:56,084 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-28 17:20:56,085 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-07-28 17:20:56,085 INFO L264 CegarLoopResult]: At program point L11(lines 3 12) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (and (= ((_ to_fp 11 53) currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode (/ 1.0 170141183460469231731687303715884105728.0)))) ULTIMATE.start_main_~fp~0) (= (fp.neg ((_ to_fp 11 53) currentRoundingMode (/ 1.0 170141183460469231731687303715884105728.0))) ULTIMATE.start_main_~d~0))) [2020-07-28 17:20:56,086 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-07-28 17:20:56,086 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-07-28 17:20:56,086 INFO L268 CegarLoopResult]: For program point L9-3(line 9) no Hoare annotation was computed. [2020-07-28 17:20:56,090 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:20:56,091 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 17:20:56,091 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-28 17:20:56,091 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-28 17:20:56,091 WARN L170 areAnnotationChecker]: L9-1 has no Hoare annotation [2020-07-28 17:20:56,092 WARN L170 areAnnotationChecker]: L9-1 has no Hoare annotation [2020-07-28 17:20:56,092 WARN L170 areAnnotationChecker]: L9-3 has no Hoare annotation [2020-07-28 17:20:56,092 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:20:56,092 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:20:56,093 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 17:20:56,100 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:20:56,101 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:20:56,101 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:20:56,105 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:20:56,106 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:20:56,106 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:20:56,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:20:56 BoogieIcfgContainer [2020-07-28 17:20:56,110 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:20:56,119 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:20:56,120 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:20:56,120 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:20:56,121 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:20:54" (3/4) ... [2020-07-28 17:20:56,125 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-07-28 17:20:56,154 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-07-28 17:20:56,155 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-07-28 17:20:56,155 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-07-28 17:20:56,189 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~to_fp~LONGDOUBLE(currentRoundingMode, ~fp.neg~DOUBLE(~to_fp~LONGDOUBLE(currentRoundingMode, 1/170141183460469231731687303715884105728))) == fp && ~fp.neg~DOUBLE(~to_fp~LONGDOUBLE(currentRoundingMode, 1/170141183460469231731687303715884105728)) == d) [2020-07-28 17:20:56,200 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 17:20:56,200 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:20:56,203 INFO L168 Benchmark]: Toolchain (without parser) took 2062.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 956.2 MB in the beginning and 1.1 GB in the end (delta: -99.8 MB). Peak memory consumption was 25.5 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:56,203 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:20:56,204 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.97 ms. Allocated memory is still 1.0 GB. Free memory was 956.2 MB in the beginning and 945.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:56,205 INFO L168 Benchmark]: Boogie Procedure Inliner took 98.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 945.5 MB in the beginning and 1.1 GB in the end (delta: -176.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:56,206 INFO L168 Benchmark]: Boogie Preprocessor took 20.63 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. [2020-07-28 17:20:56,206 INFO L168 Benchmark]: RCFGBuilder took 302.71 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: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:56,207 INFO L168 Benchmark]: TraceAbstraction took 1298.65 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: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:56,208 INFO L168 Benchmark]: Witness Printer took 80.69 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. [2020-07-28 17:20:56,212 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 253.97 ms. Allocated memory is still 1.0 GB. Free memory was 956.2 MB in the beginning and 945.5 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 98.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 945.5 MB in the beginning and 1.1 GB in the end (delta: -176.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.63 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 302.71 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: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1298.65 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: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 11.5 GB. * Witness Printer took 80.69 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.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: 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: 3]: Loop Invariant [2020-07-28 17:20:56,221 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:20:56,221 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:20:56,221 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:20:56,222 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:20:56,222 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:20:56,222 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~to_fp~LONGDOUBLE(currentRoundingMode, ~fp.neg~DOUBLE(~to_fp~LONGDOUBLE(currentRoundingMode, 1/170141183460469231731687303715884105728))) == fp && ~fp.neg~DOUBLE(~to_fp~LONGDOUBLE(currentRoundingMode, 1/170141183460469231731687303715884105728)) == d) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 SDtfs, 4 SDslu, 2 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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, 16 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 1 QuantifiedInterpolants, 69 SizeOfPredicates, 5 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...