./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_1381.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/float-newlib/float_req_bl_1381.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 c91754c7d707a58127a2dc4a18babac51d557647 ....................................................................................................................................................................................................................................................................................................................................................... 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/float-newlib/float_req_bl_1381.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 c91754c7d707a58127a2dc4a18babac51d557647 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 17:54:51,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:54:51,137 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:54:51,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:54:51,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:54:51,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:54:51,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:54:51,174 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:54:51,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:54:51,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:54:51,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:54:51,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:54:51,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:54:51,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:54:51,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:54:51,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:54:51,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:54:51,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:54:51,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:54:51,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:54:51,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:54:51,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:54:51,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:54:51,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:54:51,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:54:51,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:54:51,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:54:51,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:54:51,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:54:51,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:54:51,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:54:51,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:54:51,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:54:51,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:54:51,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:54:51,229 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:54:51,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:54:51,230 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:54:51,231 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:54:51,232 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:54:51,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:54:51,234 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 17:54:51,260 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:54:51,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:54:51,262 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:54:51,262 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:54:51,262 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:54:51,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:54:51,262 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:54:51,263 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 17:54:51,263 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:54:51,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:54:51,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:54:51,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:54:51,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:54:51,267 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:54:51,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:54:51,268 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:54:51,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:54:51,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:54:51,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:54:51,269 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:54:51,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:54:51,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:54:51,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:54:51,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:54:51,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:54:51,271 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 17:54:51,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 17:54:51,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:54:51,271 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:54:51,272 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 -> c91754c7d707a58127a2dc4a18babac51d557647 [2020-07-28 17:54:51,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:54:51,605 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:54:51,609 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:54:51,611 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:54:51,611 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:54:51,612 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1381.c [2020-07-28 17:54:51,675 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/674a0ec5e/f2b48604fe424a1ebe8ee0d9d05469fe/FLAG8d26f0bae [2020-07-28 17:54:52,118 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:54:52,119 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1381.c [2020-07-28 17:54:52,127 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/674a0ec5e/f2b48604fe424a1ebe8ee0d9d05469fe/FLAG8d26f0bae [2020-07-28 17:54:52,444 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/674a0ec5e/f2b48604fe424a1ebe8ee0d9d05469fe [2020-07-28 17:54:52,449 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:54:52,452 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:54:52,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:54:52,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:54:52,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:54:52,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:54:52" (1/1) ... [2020-07-28 17:54:52,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3adab6ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:54:52, skipping insertion in model container [2020-07-28 17:54:52,463 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:54:52" (1/1) ... [2020-07-28 17:54:52,472 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:54:52,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:54:52,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:54:52,700 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:54:52,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:54:52,752 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:54:52,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:54:52 WrapperNode [2020-07-28 17:54:52,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:54:52,754 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:54:52,754 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:54:52,754 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:54:52,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:54:52" (1/1) ... [2020-07-28 17:54:52,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:54:52" (1/1) ... [2020-07-28 17:54:52,861 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:54:52,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:54:52,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:54:52,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:54:52,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:54:52" (1/1) ... [2020-07-28 17:54:52,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:54:52" (1/1) ... [2020-07-28 17:54:52,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:54:52" (1/1) ... [2020-07-28 17:54:52,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:54:52" (1/1) ... [2020-07-28 17:54:52,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:54:52" (1/1) ... [2020-07-28 17:54:52,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:54:52" (1/1) ... [2020-07-28 17:54:52,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:54:52" (1/1) ... [2020-07-28 17:54:52,903 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:54:52,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:54:52,904 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:54:52,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:54:52,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:54:52" (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 [2020-07-28 17:54:52,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-28 17:54:52,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-28 17:54:52,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-28 17:54:52,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-28 17:54:52,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:54:52,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:54:52,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-28 17:54:52,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-28 17:54:53,331 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:54:53,332 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-07-28 17:54:53,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:54:53 BoogieIcfgContainer [2020-07-28 17:54:53,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:54:53,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:54:53,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:54:53,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:54:53,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:54:52" (1/3) ... [2020-07-28 17:54:53,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4551fa9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:54:53, skipping insertion in model container [2020-07-28 17:54:53,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:54:52" (2/3) ... [2020-07-28 17:54:53,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4551fa9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:54:53, skipping insertion in model container [2020-07-28 17:54:53,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:54:53" (3/3) ... [2020-07-28 17:54:53,346 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1381.c [2020-07-28 17:54:53,357 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:54:53,365 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:54:53,383 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:54:53,408 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:54:53,409 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:54:53,409 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:54:53,409 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:54:53,410 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:54:53,410 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:54:53,410 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:54:53,410 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:54:53,427 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-07-28 17:54:53,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-28 17:54:53,435 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:54:53,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:54:53,437 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:54:53,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:54:53,447 INFO L82 PathProgramCache]: Analyzing trace with hash 927449971, now seen corresponding path program 1 times [2020-07-28 17:54:53,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:54:53,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403483273] [2020-07-28 17:54:53,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:54:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:54:53,594 INFO L280 TraceCheckUtils]: 0: Hoare triple {20#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {20#true} is VALID [2020-07-28 17:54:53,595 INFO L280 TraceCheckUtils]: 1: Hoare triple {20#true} havoc main_#res;havoc main_#t~nondet6, main_#t~ret7, main_#t~ret8, main_~x~0, main_~y~0, main_~res~0;main_~x~0 := ~someBinaryArithmeticFLOAToperation(0.0, 0.0);main_~y~0 := main_#t~nondet6;havoc main_#t~nondet6;copysign_float_#in~x, copysign_float_#in~y := main_~x~0, main_~y~0;havoc copysign_float_#res;havoc copysign_float_#t~mem0, copysign_float_#t~union1, copysign_float_~#gf_u~0.base, copysign_float_~#gf_u~0.offset, copysign_float_#t~mem2, copysign_float_#t~union3, copysign_float_~#gf_u~1.base, copysign_float_~#gf_u~1.offset, copysign_float_#t~mem4, copysign_float_#t~union5, copysign_float_~#sf_u~0.base, copysign_float_~#sf_u~0.offset, copysign_float_~x, copysign_float_~y, copysign_float_~ix~0, copysign_float_~iy~0;copysign_float_~x := copysign_float_#in~x;copysign_float_~y := copysign_float_#in~y;havoc copysign_float_~ix~0;havoc copysign_float_~iy~0; {20#true} is VALID [2020-07-28 17:54:53,596 INFO L280 TraceCheckUtils]: 2: Hoare triple {20#true} assume !true; {21#false} is VALID [2020-07-28 17:54:53,596 INFO L280 TraceCheckUtils]: 3: Hoare triple {21#false} assume !true; {21#false} is VALID [2020-07-28 17:54:53,597 INFO L280 TraceCheckUtils]: 4: Hoare triple {21#false} assume !true; {21#false} is VALID [2020-07-28 17:54:53,597 INFO L280 TraceCheckUtils]: 5: Hoare triple {21#false} copysign_float_#res := copysign_float_~x; {21#false} is VALID [2020-07-28 17:54:53,597 INFO L280 TraceCheckUtils]: 6: Hoare triple {21#false} main_#t~ret7 := copysign_float_#res;main_~res~0 := main_#t~ret7;havoc main_#t~ret7;isnan_float_#in~x := main_~res~0;havoc isnan_float_#res;havoc isnan_float_~x;isnan_float_~x := isnan_float_#in~x;isnan_float_#res := (if ~someBinaryFLOATComparisonOperation(isnan_float_~x, isnan_float_~x) then 1 else 0); {21#false} is VALID [2020-07-28 17:54:53,598 INFO L280 TraceCheckUtils]: 7: Hoare triple {21#false} main_#t~ret8 := isnan_float_#res;assume -2147483648 <= main_#t~ret8 && main_#t~ret8 <= 2147483647; {21#false} is VALID [2020-07-28 17:54:53,598 INFO L280 TraceCheckUtils]: 8: Hoare triple {21#false} assume 0 == main_#t~ret8;havoc main_#t~ret8; {21#false} is VALID [2020-07-28 17:54:53,599 INFO L280 TraceCheckUtils]: 9: Hoare triple {21#false} assume !false; {21#false} is VALID [2020-07-28 17:54:53,601 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 17:54:53,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403483273] [2020-07-28 17:54:53,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:54:53,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-28 17:54:53,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992185267] [2020-07-28 17:54:53,609 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-28 17:54:53,611 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:54:53,614 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 17:54:53,662 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:54:53,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 17:54:53,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 17:54:53,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 17:54:53,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 17:54:53,675 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2020-07-28 17:54:53,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:54:53,729 INFO L93 Difference]: Finished difference Result 32 states and 44 transitions. [2020-07-28 17:54:53,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 17:54:53,729 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-28 17:54:53,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:54:53,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:54:53,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 44 transitions. [2020-07-28 17:54:53,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:54:53,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 44 transitions. [2020-07-28 17:54:53,746 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 44 transitions. [2020-07-28 17:54:53,850 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 44 edges. 44 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:54:53,861 INFO L225 Difference]: With dead ends: 32 [2020-07-28 17:54:53,862 INFO L226 Difference]: Without dead ends: 14 [2020-07-28 17:54:53,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 17:54:53,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-07-28 17:54:53,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-07-28 17:54:53,902 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:54:53,903 INFO L82 GeneralOperation]: Start isEquivalent. First operand 14 states. Second operand 14 states. [2020-07-28 17:54:53,903 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand 14 states. [2020-07-28 17:54:53,904 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 14 states. [2020-07-28 17:54:53,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:54:53,906 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2020-07-28 17:54:53,907 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-07-28 17:54:53,907 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:54:53,907 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:54:53,908 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand 14 states. [2020-07-28 17:54:53,908 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 14 states. [2020-07-28 17:54:53,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:54:53,910 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2020-07-28 17:54:53,910 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-07-28 17:54:53,911 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:54:53,911 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:54:53,911 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:54:53,912 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:54:53,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-28 17:54:53,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2020-07-28 17:54:53,915 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 10 [2020-07-28 17:54:53,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:54:53,916 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2020-07-28 17:54:53,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 17:54:53,916 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-07-28 17:54:53,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-28 17:54:53,917 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:54:53,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:54:53,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 17:54:53,918 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:54:53,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:54:53,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1499794425, now seen corresponding path program 1 times [2020-07-28 17:54:53,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:54:53,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307215710] [2020-07-28 17:54:53,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:54:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:54:53,976 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:54:54,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:54:54,007 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:54:54,042 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-28 17:54:54,043 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 17:54:54,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-28 17:54:54,072 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:54:54,072 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 17:54:54,072 WARN L170 areAnnotationChecker]: L14-2 has no Hoare annotation [2020-07-28 17:54:54,072 WARN L170 areAnnotationChecker]: L14-2 has no Hoare annotation [2020-07-28 17:54:54,072 WARN L170 areAnnotationChecker]: L14-1 has no Hoare annotation [2020-07-28 17:54:54,073 WARN L170 areAnnotationChecker]: L14-1 has no Hoare annotation [2020-07-28 17:54:54,073 WARN L170 areAnnotationChecker]: L19-1 has no Hoare annotation [2020-07-28 17:54:54,073 WARN L170 areAnnotationChecker]: L19-1 has no Hoare annotation [2020-07-28 17:54:54,073 WARN L170 areAnnotationChecker]: L19 has no Hoare annotation [2020-07-28 17:54:54,073 WARN L170 areAnnotationChecker]: L19 has no Hoare annotation [2020-07-28 17:54:54,073 WARN L170 areAnnotationChecker]: L24-1 has no Hoare annotation [2020-07-28 17:54:54,073 WARN L170 areAnnotationChecker]: L24-1 has no Hoare annotation [2020-07-28 17:54:54,074 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2020-07-28 17:54:54,074 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2020-07-28 17:54:54,074 WARN L170 areAnnotationChecker]: L24-2 has no Hoare annotation [2020-07-28 17:54:54,074 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2020-07-28 17:54:54,074 WARN L170 areAnnotationChecker]: L33 has no Hoare annotation [2020-07-28 17:54:54,074 WARN L170 areAnnotationChecker]: L48 has no Hoare annotation [2020-07-28 17:54:54,074 WARN L170 areAnnotationChecker]: L48 has no Hoare annotation [2020-07-28 17:54:54,075 WARN L170 areAnnotationChecker]: L49 has no Hoare annotation [2020-07-28 17:54:54,075 WARN L170 areAnnotationChecker]: L49 has no Hoare annotation [2020-07-28 17:54:54,075 WARN L170 areAnnotationChecker]: L53 has no Hoare annotation [2020-07-28 17:54:54,075 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:54:54,075 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 17:54:54,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:54:54 BoogieIcfgContainer [2020-07-28 17:54:54,078 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:54:54,078 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:54:54,078 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:54:54,079 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:54:54,079 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:54:53" (3/4) ... [2020-07-28 17:54:54,083 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-07-28 17:54:54,083 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:54:54,087 INFO L168 Benchmark]: Toolchain (without parser) took 1635.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 956.2 MB in the beginning and 1.1 GB in the end (delta: -95.2 MB). Peak memory consumption was 38.0 MB. Max. memory is 11.5 GB. [2020-07-28 17:54:54,087 INFO L168 Benchmark]: CDTParser took 0.27 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 17:54:54,088 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.65 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 17:54:54,089 INFO L168 Benchmark]: Boogie Procedure Inliner took 107.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 945.5 MB in the beginning and 1.1 GB in the end (delta: -177.3 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. [2020-07-28 17:54:54,090 INFO L168 Benchmark]: Boogie Preprocessor took 41.49 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 17:54:54,091 INFO L168 Benchmark]: RCFGBuilder took 433.27 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: 31.2 MB). Peak memory consumption was 31.2 MB. Max. memory is 11.5 GB. [2020-07-28 17:54:54,091 INFO L168 Benchmark]: TraceAbstraction took 739.90 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: 40.2 MB). Peak memory consumption was 40.2 MB. Max. memory is 11.5 GB. [2020-07-28 17:54:54,092 INFO L168 Benchmark]: Witness Printer took 5.13 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 17:54:54,097 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 0.27 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 299.65 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 107.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 945.5 MB in the beginning and 1.1 GB in the end (delta: -177.3 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 41.49 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 433.27 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: 31.2 MB). Peak memory consumption was 31.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 739.90 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: 40.2 MB). Peak memory consumption was 40.2 MB. Max. memory is 11.5 GB. * Witness Printer took 5.13 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: 49]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 33, overapproximation of bitwiseOr at line 26, overapproximation of someBinaryArithmeticFLOAToperation at line 43. Possible FailurePath: [L43] float x = 0.0f / 0.0f; [L44] float y = __VERIFIER_nondet_float(); [L13] __uint32_t ix, iy; [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (ix) = gf_u.word [L20] ieee_float_shape_type gf_u; [L21] gf_u.value = (y) [L22] EXPR gf_u.word [L22] (iy) = gf_u.word [L25] ieee_float_shape_type sf_u; [L26] sf_u.word = ((ix & 0x7fffffff) | (iy & 0x80000000)) [L27] EXPR sf_u.value [L27] (x) = sf_u.value [L29] return x; [L45] float res = copysign_float(x, y); [L33] return x != x; [L48] COND TRUE !isnan_float(res) [L49] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 17:54:56,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:54:56,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:54:56,134 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:54:56,135 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:54:56,136 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:54:56,138 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:54:56,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:54:56,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:54:56,143 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:54:56,144 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:54:56,145 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:54:56,146 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:54:56,147 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:54:56,148 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:54:56,149 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:54:56,150 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:54:56,152 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:54:56,156 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:54:56,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:54:56,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:54:56,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:54:56,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:54:56,169 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:54:56,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:54:56,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:54:56,175 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:54:56,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:54:56,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:54:56,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:54:56,178 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:54:56,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:54:56,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:54:56,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:54:56,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:54:56,191 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:54:56,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:54:56,192 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:54:56,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:54:56,193 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:54:56,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:54:56,196 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-07-28 17:54:56,234 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:54:56,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:54:56,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:54:56,239 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:54:56,240 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:54:56,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:54:56,240 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:54:56,240 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:54:56,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:54:56,241 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:54:56,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:54:56,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:54:56,244 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-07-28 17:54:56,244 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-07-28 17:54:56,244 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:54:56,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:54:56,244 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:54:56,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:54:56,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:54:56,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:54:56,245 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:54:56,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:54:56,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:54:56,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:54:56,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:54:56,248 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:54:56,248 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-07-28 17:54:56,248 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-07-28 17:54:56,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:54:56,249 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:54:56,249 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-28 17:54:56,249 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 -> c91754c7d707a58127a2dc4a18babac51d557647 [2020-07-28 17:54:56,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:54:56,622 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:54:56,627 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:54:56,629 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:54:56,631 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:54:56,632 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1381.c [2020-07-28 17:54:56,701 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43926ff32/9de0d24885ca48fdafe7e8473bec0216/FLAGc0f8f0b38 [2020-07-28 17:54:57,159 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:54:57,160 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1381.c [2020-07-28 17:54:57,169 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43926ff32/9de0d24885ca48fdafe7e8473bec0216/FLAGc0f8f0b38 [2020-07-28 17:54:57,545 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43926ff32/9de0d24885ca48fdafe7e8473bec0216 [2020-07-28 17:54:57,549 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:54:57,552 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:54:57,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:54:57,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:54:57,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:54:57,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:54:57" (1/1) ... [2020-07-28 17:54:57,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22005759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:54:57, skipping insertion in model container [2020-07-28 17:54:57,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:54:57" (1/1) ... [2020-07-28 17:54:57,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:54:57,593 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:54:57,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:54:57,800 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:54:57,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:54:57,920 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:54:57,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:54:57 WrapperNode [2020-07-28 17:54:57,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:54:57,922 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:54:57,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:54:57,922 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:54:57,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:54:57" (1/1) ... [2020-07-28 17:54:57,943 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:54:57" (1/1) ... [2020-07-28 17:54:57,974 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:54:57,974 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:54:57,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:54:57,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:54:57,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:54:57" (1/1) ... [2020-07-28 17:54:57,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:54:57" (1/1) ... [2020-07-28 17:54:57,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:54:57" (1/1) ... [2020-07-28 17:54:57,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:54:57" (1/1) ... [2020-07-28 17:54:58,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:54:57" (1/1) ... [2020-07-28 17:54:58,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:54:57" (1/1) ... [2020-07-28 17:54:58,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:54:57" (1/1) ... [2020-07-28 17:54:58,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:54:58,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:54:58,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:54:58,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:54:58,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:54:57" (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 17:54:58,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-28 17:54:58,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-07-28 17:54:58,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-07-28 17:54:58,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:54:58,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:54:58,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-07-28 17:54:58,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-07-28 17:54:58,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-28 17:54:58,517 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:54:58,518 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-07-28 17:54:58,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:54:58 BoogieIcfgContainer [2020-07-28 17:54:58,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:54:58,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:54:58,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:54:58,527 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:54:58,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:54:57" (1/3) ... [2020-07-28 17:54:58,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e8fe818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:54:58, skipping insertion in model container [2020-07-28 17:54:58,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:54:57" (2/3) ... [2020-07-28 17:54:58,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e8fe818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:54:58, skipping insertion in model container [2020-07-28 17:54:58,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:54:58" (3/3) ... [2020-07-28 17:54:58,542 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1381.c [2020-07-28 17:54:58,554 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:54:58,563 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:54:58,576 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:54:58,596 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:54:58,596 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:54:58,597 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:54:58,597 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:54:58,597 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:54:58,597 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:54:58,597 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:54:58,598 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:54:58,611 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-07-28 17:54:58,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-28 17:54:58,617 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:54:58,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:54:58,618 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:54:58,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:54:58,623 INFO L82 PathProgramCache]: Analyzing trace with hash 927449971, now seen corresponding path program 1 times [2020-07-28 17:54:58,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:54:58,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116207485] [2020-07-28 17:54:58,635 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 17:54:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:54:58,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-28 17:54:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:54:58,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 17:54:58,783 INFO L280 TraceCheckUtils]: 0: Hoare triple {20#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven; {20#true} is VALID [2020-07-28 17:54:58,784 INFO L280 TraceCheckUtils]: 1: Hoare triple {20#true} havoc main_#res;havoc main_#t~nondet6, main_#t~ret7, main_#t~ret8, main_~x~0, main_~y~0, main_~res~0;main_~x~0 := ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~FLOAT(), ~Pluszero~FLOAT());main_~y~0 := main_#t~nondet6;havoc main_#t~nondet6;copysign_float_#in~x, copysign_float_#in~y := main_~x~0, main_~y~0;havoc copysign_float_#res;havoc copysign_float_#t~mem0, copysign_float_#t~union1, copysign_float_~#gf_u~0.base, copysign_float_~#gf_u~0.offset, copysign_float_#t~mem2, copysign_float_#t~union3, copysign_float_~#gf_u~1.base, copysign_float_~#gf_u~1.offset, copysign_float_#t~mem4, copysign_float_#t~union5, copysign_float_~#sf_u~0.base, copysign_float_~#sf_u~0.offset, copysign_float_~x, copysign_float_~y, copysign_float_~ix~0, copysign_float_~iy~0;copysign_float_~x := copysign_float_#in~x;copysign_float_~y := copysign_float_#in~y;havoc copysign_float_~ix~0;havoc copysign_float_~iy~0; {20#true} is VALID [2020-07-28 17:54:58,786 INFO L280 TraceCheckUtils]: 2: Hoare triple {20#true} assume !true; {21#false} is VALID [2020-07-28 17:54:58,786 INFO L280 TraceCheckUtils]: 3: Hoare triple {21#false} assume !true; {21#false} is VALID [2020-07-28 17:54:58,786 INFO L280 TraceCheckUtils]: 4: Hoare triple {21#false} assume !true; {21#false} is VALID [2020-07-28 17:54:58,787 INFO L280 TraceCheckUtils]: 5: Hoare triple {21#false} copysign_float_#res := copysign_float_~x; {21#false} is VALID [2020-07-28 17:54:58,787 INFO L280 TraceCheckUtils]: 6: Hoare triple {21#false} main_#t~ret7 := copysign_float_#res;main_~res~0 := main_#t~ret7;havoc main_#t~ret7;isnan_float_#in~x := main_~res~0;havoc isnan_float_#res;havoc isnan_float_~x;isnan_float_~x := isnan_float_#in~x;isnan_float_#res := (if !~fp.eq~FLOAT(isnan_float_~x, isnan_float_~x) then 1bv32 else 0bv32); {21#false} is VALID [2020-07-28 17:54:58,788 INFO L280 TraceCheckUtils]: 7: Hoare triple {21#false} main_#t~ret8 := isnan_float_#res; {21#false} is VALID [2020-07-28 17:54:58,788 INFO L280 TraceCheckUtils]: 8: Hoare triple {21#false} assume 0bv32 == main_#t~ret8;havoc main_#t~ret8; {21#false} is VALID [2020-07-28 17:54:58,788 INFO L280 TraceCheckUtils]: 9: Hoare triple {21#false} assume !false; {21#false} is VALID [2020-07-28 17:54:58,791 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 17:54:58,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 17:54:58,806 INFO L280 TraceCheckUtils]: 9: Hoare triple {21#false} assume !false; {21#false} is VALID [2020-07-28 17:54:58,806 INFO L280 TraceCheckUtils]: 8: Hoare triple {21#false} assume 0bv32 == main_#t~ret8;havoc main_#t~ret8; {21#false} is VALID [2020-07-28 17:54:58,807 INFO L280 TraceCheckUtils]: 7: Hoare triple {21#false} main_#t~ret8 := isnan_float_#res; {21#false} is VALID [2020-07-28 17:54:58,807 INFO L280 TraceCheckUtils]: 6: Hoare triple {21#false} main_#t~ret7 := copysign_float_#res;main_~res~0 := main_#t~ret7;havoc main_#t~ret7;isnan_float_#in~x := main_~res~0;havoc isnan_float_#res;havoc isnan_float_~x;isnan_float_~x := isnan_float_#in~x;isnan_float_#res := (if !~fp.eq~FLOAT(isnan_float_~x, isnan_float_~x) then 1bv32 else 0bv32); {21#false} is VALID [2020-07-28 17:54:58,807 INFO L280 TraceCheckUtils]: 5: Hoare triple {21#false} copysign_float_#res := copysign_float_~x; {21#false} is VALID [2020-07-28 17:54:58,807 INFO L280 TraceCheckUtils]: 4: Hoare triple {21#false} assume !true; {21#false} is VALID [2020-07-28 17:54:58,808 INFO L280 TraceCheckUtils]: 3: Hoare triple {21#false} assume !true; {21#false} is VALID [2020-07-28 17:54:58,809 INFO L280 TraceCheckUtils]: 2: Hoare triple {20#true} assume !true; {21#false} is VALID [2020-07-28 17:54:58,809 INFO L280 TraceCheckUtils]: 1: Hoare triple {20#true} havoc main_#res;havoc main_#t~nondet6, main_#t~ret7, main_#t~ret8, main_~x~0, main_~y~0, main_~res~0;main_~x~0 := ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~FLOAT(), ~Pluszero~FLOAT());main_~y~0 := main_#t~nondet6;havoc main_#t~nondet6;copysign_float_#in~x, copysign_float_#in~y := main_~x~0, main_~y~0;havoc copysign_float_#res;havoc copysign_float_#t~mem0, copysign_float_#t~union1, copysign_float_~#gf_u~0.base, copysign_float_~#gf_u~0.offset, copysign_float_#t~mem2, copysign_float_#t~union3, copysign_float_~#gf_u~1.base, copysign_float_~#gf_u~1.offset, copysign_float_#t~mem4, copysign_float_#t~union5, copysign_float_~#sf_u~0.base, copysign_float_~#sf_u~0.offset, copysign_float_~x, copysign_float_~y, copysign_float_~ix~0, copysign_float_~iy~0;copysign_float_~x := copysign_float_#in~x;copysign_float_~y := copysign_float_#in~y;havoc copysign_float_~ix~0;havoc copysign_float_~iy~0; {20#true} is VALID [2020-07-28 17:54:58,810 INFO L280 TraceCheckUtils]: 0: Hoare triple {20#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven; {20#true} is VALID [2020-07-28 17:54:58,811 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 17:54:58,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116207485] [2020-07-28 17:54:58,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:54:58,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-07-28 17:54:58,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087594166] [2020-07-28 17:54:58,821 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-28 17:54:58,823 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:54:58,827 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 17:54:58,851 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:54:58,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 17:54:58,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 17:54:58,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 17:54:58,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 17:54:58,863 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2020-07-28 17:54:58,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:54:58,933 INFO L93 Difference]: Finished difference Result 32 states and 44 transitions. [2020-07-28 17:54:58,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 17:54:58,933 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-28 17:54:58,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:54:58,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:54:58,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 44 transitions. [2020-07-28 17:54:58,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:54:58,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 44 transitions. [2020-07-28 17:54:58,947 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 44 transitions. [2020-07-28 17:54:59,042 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 44 edges. 44 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:54:59,055 INFO L225 Difference]: With dead ends: 32 [2020-07-28 17:54:59,055 INFO L226 Difference]: Without dead ends: 14 [2020-07-28 17:54:59,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 17:54:59,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-07-28 17:54:59,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-07-28 17:54:59,090 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:54:59,091 INFO L82 GeneralOperation]: Start isEquivalent. First operand 14 states. Second operand 14 states. [2020-07-28 17:54:59,091 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand 14 states. [2020-07-28 17:54:59,091 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 14 states. [2020-07-28 17:54:59,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:54:59,094 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2020-07-28 17:54:59,094 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-07-28 17:54:59,095 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:54:59,095 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:54:59,095 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand 14 states. [2020-07-28 17:54:59,095 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 14 states. [2020-07-28 17:54:59,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:54:59,097 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2020-07-28 17:54:59,098 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-07-28 17:54:59,098 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:54:59,098 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:54:59,098 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:54:59,099 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:54:59,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-28 17:54:59,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2020-07-28 17:54:59,102 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 10 [2020-07-28 17:54:59,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:54:59,103 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2020-07-28 17:54:59,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 17:54:59,103 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-07-28 17:54:59,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-28 17:54:59,104 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:54:59,104 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:54:59,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-07-28 17:54:59,319 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:54:59,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:54:59,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1499794425, now seen corresponding path program 1 times [2020-07-28 17:54:59,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:54:59,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1247934061] [2020-07-28 17:54:59,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-07-28 17:54:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:54:59,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-28 17:54:59,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:54:59,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 17:54:59,669 INFO L523 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-28 17:54:59,746 INFO L280 TraceCheckUtils]: 0: Hoare triple {163#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven; {163#true} is VALID [2020-07-28 17:54:59,750 INFO L280 TraceCheckUtils]: 1: Hoare triple {163#true} havoc main_#res;havoc main_#t~nondet6, main_#t~ret7, main_#t~ret8, main_~x~0, main_~y~0, main_~res~0;main_~x~0 := ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~FLOAT(), ~Pluszero~FLOAT());main_~y~0 := main_#t~nondet6;havoc main_#t~nondet6;copysign_float_#in~x, copysign_float_#in~y := main_~x~0, main_~y~0;havoc copysign_float_#res;havoc copysign_float_#t~mem0, copysign_float_#t~union1, copysign_float_~#gf_u~0.base, copysign_float_~#gf_u~0.offset, copysign_float_#t~mem2, copysign_float_#t~union3, copysign_float_~#gf_u~1.base, copysign_float_~#gf_u~1.offset, copysign_float_#t~mem4, copysign_float_#t~union5, copysign_float_~#sf_u~0.base, copysign_float_~#sf_u~0.offset, copysign_float_~x, copysign_float_~y, copysign_float_~ix~0, copysign_float_~iy~0;copysign_float_~x := copysign_float_#in~x;copysign_float_~y := copysign_float_#in~y;havoc copysign_float_~ix~0;havoc copysign_float_~iy~0; {171#(exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_copysign_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} is VALID [2020-07-28 17:54:59,757 INFO L280 TraceCheckUtils]: 2: Hoare triple {171#(exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_copysign_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} call copysign_float_~#gf_u~0.base, copysign_float_~#gf_u~0.offset := #Ultimate.allocOnStack(4bv32);call write~intFLOATTYPE4(copysign_float_~x, copysign_float_~#gf_u~0.base, copysign_float_~#gf_u~0.offset, 4bv32);call copysign_float_#t~mem0 := read~intINTTYPE4(copysign_float_~#gf_u~0.base, copysign_float_~#gf_u~0.offset, 4bv32);copysign_float_~ix~0 := copysign_float_#t~mem0;call write~intFLOATTYPE4(copysign_float_#t~union1, copysign_float_~#gf_u~0.base, copysign_float_~#gf_u~0.offset, 4bv32);havoc copysign_float_#t~mem0;havoc copysign_float_#t~union1;call ULTIMATE.dealloc(copysign_float_~#gf_u~0.base, copysign_float_~#gf_u~0.offset);havoc copysign_float_~#gf_u~0.base, copysign_float_~#gf_u~0.offset; {175#(exists ((currentRoundingMode RoundingMode)) (= (fp ((_ extract 31 31) ULTIMATE.start_copysign_float_~ix~0) ((_ extract 30 23) ULTIMATE.start_copysign_float_~ix~0) ((_ extract 22 0) ULTIMATE.start_copysign_float_~ix~0)) (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} is VALID [2020-07-28 17:54:59,758 INFO L280 TraceCheckUtils]: 3: Hoare triple {175#(exists ((currentRoundingMode RoundingMode)) (= (fp ((_ extract 31 31) ULTIMATE.start_copysign_float_~ix~0) ((_ extract 30 23) ULTIMATE.start_copysign_float_~ix~0) ((_ extract 22 0) ULTIMATE.start_copysign_float_~ix~0)) (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} goto; {175#(exists ((currentRoundingMode RoundingMode)) (= (fp ((_ extract 31 31) ULTIMATE.start_copysign_float_~ix~0) ((_ extract 30 23) ULTIMATE.start_copysign_float_~ix~0) ((_ extract 22 0) ULTIMATE.start_copysign_float_~ix~0)) (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} is VALID [2020-07-28 17:54:59,760 INFO L280 TraceCheckUtils]: 4: Hoare triple {175#(exists ((currentRoundingMode RoundingMode)) (= (fp ((_ extract 31 31) ULTIMATE.start_copysign_float_~ix~0) ((_ extract 30 23) ULTIMATE.start_copysign_float_~ix~0) ((_ extract 22 0) ULTIMATE.start_copysign_float_~ix~0)) (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} call copysign_float_~#gf_u~1.base, copysign_float_~#gf_u~1.offset := #Ultimate.allocOnStack(4bv32);call write~intFLOATTYPE4(copysign_float_~y, copysign_float_~#gf_u~1.base, copysign_float_~#gf_u~1.offset, 4bv32);call copysign_float_#t~mem2 := read~intINTTYPE4(copysign_float_~#gf_u~1.base, copysign_float_~#gf_u~1.offset, 4bv32);copysign_float_~iy~0 := copysign_float_#t~mem2;call write~intFLOATTYPE4(copysign_float_#t~union3, copysign_float_~#gf_u~1.base, copysign_float_~#gf_u~1.offset, 4bv32);havoc copysign_float_#t~union3;havoc copysign_float_#t~mem2;call ULTIMATE.dealloc(copysign_float_~#gf_u~1.base, copysign_float_~#gf_u~1.offset);havoc copysign_float_~#gf_u~1.base, copysign_float_~#gf_u~1.offset; {175#(exists ((currentRoundingMode RoundingMode)) (= (fp ((_ extract 31 31) ULTIMATE.start_copysign_float_~ix~0) ((_ extract 30 23) ULTIMATE.start_copysign_float_~ix~0) ((_ extract 22 0) ULTIMATE.start_copysign_float_~ix~0)) (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} is VALID [2020-07-28 17:54:59,761 INFO L280 TraceCheckUtils]: 5: Hoare triple {175#(exists ((currentRoundingMode RoundingMode)) (= (fp ((_ extract 31 31) ULTIMATE.start_copysign_float_~ix~0) ((_ extract 30 23) ULTIMATE.start_copysign_float_~ix~0) ((_ extract 22 0) ULTIMATE.start_copysign_float_~ix~0)) (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} goto; {175#(exists ((currentRoundingMode RoundingMode)) (= (fp ((_ extract 31 31) ULTIMATE.start_copysign_float_~ix~0) ((_ extract 30 23) ULTIMATE.start_copysign_float_~ix~0) ((_ extract 22 0) ULTIMATE.start_copysign_float_~ix~0)) (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} is VALID [2020-07-28 17:54:59,766 INFO L280 TraceCheckUtils]: 6: Hoare triple {175#(exists ((currentRoundingMode RoundingMode)) (= (fp ((_ extract 31 31) ULTIMATE.start_copysign_float_~ix~0) ((_ extract 30 23) ULTIMATE.start_copysign_float_~ix~0) ((_ extract 22 0) ULTIMATE.start_copysign_float_~ix~0)) (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} call copysign_float_~#sf_u~0.base, copysign_float_~#sf_u~0.offset := #Ultimate.allocOnStack(4bv32);call write~intINTTYPE4(~bvor32(~bvand32(2147483647bv32, copysign_float_~ix~0), ~bvand32(2147483648bv32, copysign_float_~iy~0)), copysign_float_~#sf_u~0.base, copysign_float_~#sf_u~0.offset, 4bv32);call copysign_float_#t~mem4 := read~intFLOATTYPE4(copysign_float_~#sf_u~0.base, copysign_float_~#sf_u~0.offset, 4bv32);copysign_float_~x := copysign_float_#t~mem4;call write~intINTTYPE4(copysign_float_#t~union5, copysign_float_~#sf_u~0.base, copysign_float_~#sf_u~0.offset, 4bv32);havoc copysign_float_#t~mem4;havoc copysign_float_#t~union5;call ULTIMATE.dealloc(copysign_float_~#sf_u~0.base, copysign_float_~#sf_u~0.offset);havoc copysign_float_~#sf_u~0.base, copysign_float_~#sf_u~0.offset; {171#(exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_copysign_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} is VALID [2020-07-28 17:54:59,767 INFO L280 TraceCheckUtils]: 7: Hoare triple {171#(exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_copysign_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} goto; {171#(exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_copysign_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} is VALID [2020-07-28 17:54:59,769 INFO L280 TraceCheckUtils]: 8: Hoare triple {171#(exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_copysign_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} copysign_float_#res := copysign_float_~x; {194#(exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_copysign_float_#res| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} is VALID [2020-07-28 17:54:59,772 INFO L280 TraceCheckUtils]: 9: Hoare triple {194#(exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_copysign_float_#res| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} main_#t~ret7 := copysign_float_#res;main_~res~0 := main_#t~ret7;havoc main_#t~ret7;isnan_float_#in~x := main_~res~0;havoc isnan_float_#res;havoc isnan_float_~x;isnan_float_~x := isnan_float_#in~x;isnan_float_#res := (if !~fp.eq~FLOAT(isnan_float_~x, isnan_float_~x) then 1bv32 else 0bv32); {198#(= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)} is VALID [2020-07-28 17:54:59,774 INFO L280 TraceCheckUtils]: 10: Hoare triple {198#(= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)} main_#t~ret8 := isnan_float_#res; {202#(= (bvadd |ULTIMATE.start_main_#t~ret8| (_ bv4294967295 32)) (_ bv0 32))} is VALID [2020-07-28 17:54:59,775 INFO L280 TraceCheckUtils]: 11: Hoare triple {202#(= (bvadd |ULTIMATE.start_main_#t~ret8| (_ bv4294967295 32)) (_ bv0 32))} assume 0bv32 == main_#t~ret8;havoc main_#t~ret8; {164#false} is VALID [2020-07-28 17:54:59,776 INFO L280 TraceCheckUtils]: 12: Hoare triple {164#false} assume !false; {164#false} is VALID [2020-07-28 17:54:59,779 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 17:54:59,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 17:55:00,056 INFO L280 TraceCheckUtils]: 12: Hoare triple {164#false} assume !false; {164#false} is VALID [2020-07-28 17:55:00,057 INFO L280 TraceCheckUtils]: 11: Hoare triple {212#(not (= |ULTIMATE.start_main_#t~ret8| (_ bv0 32)))} assume 0bv32 == main_#t~ret8;havoc main_#t~ret8; {164#false} is VALID [2020-07-28 17:55:00,059 INFO L280 TraceCheckUtils]: 10: Hoare triple {216#(not (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|))} main_#t~ret8 := isnan_float_#res; {212#(not (= |ULTIMATE.start_main_#t~ret8| (_ bv0 32)))} is VALID [2020-07-28 17:55:00,060 INFO L280 TraceCheckUtils]: 9: Hoare triple {220#(not (fp.eq |ULTIMATE.start_copysign_float_#res| |ULTIMATE.start_copysign_float_#res|))} main_#t~ret7 := copysign_float_#res;main_~res~0 := main_#t~ret7;havoc main_#t~ret7;isnan_float_#in~x := main_~res~0;havoc isnan_float_#res;havoc isnan_float_~x;isnan_float_~x := isnan_float_#in~x;isnan_float_#res := (if !~fp.eq~FLOAT(isnan_float_~x, isnan_float_~x) then 1bv32 else 0bv32); {216#(not (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|))} is VALID [2020-07-28 17:55:00,061 INFO L280 TraceCheckUtils]: 8: Hoare triple {224#(not (fp.eq ULTIMATE.start_copysign_float_~x ULTIMATE.start_copysign_float_~x))} copysign_float_#res := copysign_float_~x; {220#(not (fp.eq |ULTIMATE.start_copysign_float_#res| |ULTIMATE.start_copysign_float_#res|))} is VALID [2020-07-28 17:55:00,062 INFO L280 TraceCheckUtils]: 7: Hoare triple {224#(not (fp.eq ULTIMATE.start_copysign_float_~x ULTIMATE.start_copysign_float_~x))} goto; {224#(not (fp.eq ULTIMATE.start_copysign_float_~x ULTIMATE.start_copysign_float_~x))} is VALID [2020-07-28 17:55:00,066 INFO L280 TraceCheckUtils]: 6: Hoare triple {231#(forall ((ULTIMATE.start_copysign_float_~iy~0 (_ BitVec 32))) (not (fp.eq (fp ((_ extract 31 31) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0))) ((_ extract 30 23) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0))) ((_ extract 22 0) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0)))) (fp ((_ extract 31 31) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0))) ((_ extract 30 23) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0))) ((_ extract 22 0) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0)))))))} call copysign_float_~#sf_u~0.base, copysign_float_~#sf_u~0.offset := #Ultimate.allocOnStack(4bv32);call write~intINTTYPE4(~bvor32(~bvand32(2147483647bv32, copysign_float_~ix~0), ~bvand32(2147483648bv32, copysign_float_~iy~0)), copysign_float_~#sf_u~0.base, copysign_float_~#sf_u~0.offset, 4bv32);call copysign_float_#t~mem4 := read~intFLOATTYPE4(copysign_float_~#sf_u~0.base, copysign_float_~#sf_u~0.offset, 4bv32);copysign_float_~x := copysign_float_#t~mem4;call write~intINTTYPE4(copysign_float_#t~union5, copysign_float_~#sf_u~0.base, copysign_float_~#sf_u~0.offset, 4bv32);havoc copysign_float_#t~mem4;havoc copysign_float_#t~union5;call ULTIMATE.dealloc(copysign_float_~#sf_u~0.base, copysign_float_~#sf_u~0.offset);havoc copysign_float_~#sf_u~0.base, copysign_float_~#sf_u~0.offset; {224#(not (fp.eq ULTIMATE.start_copysign_float_~x ULTIMATE.start_copysign_float_~x))} is VALID [2020-07-28 17:55:00,068 INFO L280 TraceCheckUtils]: 5: Hoare triple {231#(forall ((ULTIMATE.start_copysign_float_~iy~0 (_ BitVec 32))) (not (fp.eq (fp ((_ extract 31 31) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0))) ((_ extract 30 23) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0))) ((_ extract 22 0) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0)))) (fp ((_ extract 31 31) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0))) ((_ extract 30 23) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0))) ((_ extract 22 0) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0)))))))} goto; {231#(forall ((ULTIMATE.start_copysign_float_~iy~0 (_ BitVec 32))) (not (fp.eq (fp ((_ extract 31 31) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0))) ((_ extract 30 23) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0))) ((_ extract 22 0) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0)))) (fp ((_ extract 31 31) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0))) ((_ extract 30 23) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0))) ((_ extract 22 0) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0)))))))} is VALID [2020-07-28 17:55:00,069 INFO L280 TraceCheckUtils]: 4: Hoare triple {231#(forall ((ULTIMATE.start_copysign_float_~iy~0 (_ BitVec 32))) (not (fp.eq (fp ((_ extract 31 31) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0))) ((_ extract 30 23) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0))) ((_ extract 22 0) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0)))) (fp ((_ extract 31 31) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0))) ((_ extract 30 23) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0))) ((_ extract 22 0) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0)))))))} call copysign_float_~#gf_u~1.base, copysign_float_~#gf_u~1.offset := #Ultimate.allocOnStack(4bv32);call write~intFLOATTYPE4(copysign_float_~y, copysign_float_~#gf_u~1.base, copysign_float_~#gf_u~1.offset, 4bv32);call copysign_float_#t~mem2 := read~intINTTYPE4(copysign_float_~#gf_u~1.base, copysign_float_~#gf_u~1.offset, 4bv32);copysign_float_~iy~0 := copysign_float_#t~mem2;call write~intFLOATTYPE4(copysign_float_#t~union3, copysign_float_~#gf_u~1.base, copysign_float_~#gf_u~1.offset, 4bv32);havoc copysign_float_#t~union3;havoc copysign_float_#t~mem2;call ULTIMATE.dealloc(copysign_float_~#gf_u~1.base, copysign_float_~#gf_u~1.offset);havoc copysign_float_~#gf_u~1.base, copysign_float_~#gf_u~1.offset; {231#(forall ((ULTIMATE.start_copysign_float_~iy~0 (_ BitVec 32))) (not (fp.eq (fp ((_ extract 31 31) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0))) ((_ extract 30 23) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0))) ((_ extract 22 0) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0)))) (fp ((_ extract 31 31) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0))) ((_ extract 30 23) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0))) ((_ extract 22 0) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0)))))))} is VALID [2020-07-28 17:55:00,072 INFO L280 TraceCheckUtils]: 3: Hoare triple {231#(forall ((ULTIMATE.start_copysign_float_~iy~0 (_ BitVec 32))) (not (fp.eq (fp ((_ extract 31 31) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0))) ((_ extract 30 23) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0))) ((_ extract 22 0) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0)))) (fp ((_ extract 31 31) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0))) ((_ extract 30 23) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0))) ((_ extract 22 0) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0)))))))} goto; {231#(forall ((ULTIMATE.start_copysign_float_~iy~0 (_ BitVec 32))) (not (fp.eq (fp ((_ extract 31 31) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0))) ((_ extract 30 23) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0))) ((_ extract 22 0) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0)))) (fp ((_ extract 31 31) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0))) ((_ extract 30 23) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0))) ((_ extract 22 0) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0)))))))} is VALID [2020-07-28 17:55:00,077 INFO L280 TraceCheckUtils]: 2: Hoare triple {224#(not (fp.eq ULTIMATE.start_copysign_float_~x ULTIMATE.start_copysign_float_~x))} call copysign_float_~#gf_u~0.base, copysign_float_~#gf_u~0.offset := #Ultimate.allocOnStack(4bv32);call write~intFLOATTYPE4(copysign_float_~x, copysign_float_~#gf_u~0.base, copysign_float_~#gf_u~0.offset, 4bv32);call copysign_float_#t~mem0 := read~intINTTYPE4(copysign_float_~#gf_u~0.base, copysign_float_~#gf_u~0.offset, 4bv32);copysign_float_~ix~0 := copysign_float_#t~mem0;call write~intFLOATTYPE4(copysign_float_#t~union1, copysign_float_~#gf_u~0.base, copysign_float_~#gf_u~0.offset, 4bv32);havoc copysign_float_#t~mem0;havoc copysign_float_#t~union1;call ULTIMATE.dealloc(copysign_float_~#gf_u~0.base, copysign_float_~#gf_u~0.offset);havoc copysign_float_~#gf_u~0.base, copysign_float_~#gf_u~0.offset; {231#(forall ((ULTIMATE.start_copysign_float_~iy~0 (_ BitVec 32))) (not (fp.eq (fp ((_ extract 31 31) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0))) ((_ extract 30 23) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0))) ((_ extract 22 0) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0)))) (fp ((_ extract 31 31) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0))) ((_ extract 30 23) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0))) ((_ extract 22 0) (bvor (bvand (_ bv2147483647 32) ULTIMATE.start_copysign_float_~ix~0) (bvand (_ bv2147483648 32) ULTIMATE.start_copysign_float_~iy~0)))))))} is VALID [2020-07-28 17:55:00,081 INFO L280 TraceCheckUtils]: 1: Hoare triple {163#true} havoc main_#res;havoc main_#t~nondet6, main_#t~ret7, main_#t~ret8, main_~x~0, main_~y~0, main_~res~0;main_~x~0 := ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~FLOAT(), ~Pluszero~FLOAT());main_~y~0 := main_#t~nondet6;havoc main_#t~nondet6;copysign_float_#in~x, copysign_float_#in~y := main_~x~0, main_~y~0;havoc copysign_float_#res;havoc copysign_float_#t~mem0, copysign_float_#t~union1, copysign_float_~#gf_u~0.base, copysign_float_~#gf_u~0.offset, copysign_float_#t~mem2, copysign_float_#t~union3, copysign_float_~#gf_u~1.base, copysign_float_~#gf_u~1.offset, copysign_float_#t~mem4, copysign_float_#t~union5, copysign_float_~#sf_u~0.base, copysign_float_~#sf_u~0.offset, copysign_float_~x, copysign_float_~y, copysign_float_~ix~0, copysign_float_~iy~0;copysign_float_~x := copysign_float_#in~x;copysign_float_~y := copysign_float_#in~y;havoc copysign_float_~ix~0;havoc copysign_float_~iy~0; {224#(not (fp.eq ULTIMATE.start_copysign_float_~x ULTIMATE.start_copysign_float_~x))} is VALID [2020-07-28 17:55:00,082 INFO L280 TraceCheckUtils]: 0: Hoare triple {163#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven; {163#true} is VALID [2020-07-28 17:55:00,083 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 17:55:00,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1247934061] [2020-07-28 17:55:00,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:55:00,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2020-07-28 17:55:00,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894632187] [2020-07-28 17:55:00,087 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 13 [2020-07-28 17:55:00,087 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:55:00,088 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 12 states. [2020-07-28 17:55:00,163 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:55:00,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-28 17:55:00,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 17:55:00,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-28 17:55:00,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-07-28 17:55:00,165 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand 12 states. [2020-07-28 17:55:01,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:55:01,119 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2020-07-28 17:55:01,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-28 17:55:01,120 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 13 [2020-07-28 17:55:01,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:55:01,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-28 17:55:01,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 13 transitions. [2020-07-28 17:55:01,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-28 17:55:01,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 13 transitions. [2020-07-28 17:55:01,123 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states and 13 transitions. [2020-07-28 17:55:01,188 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:55:01,188 INFO L225 Difference]: With dead ends: 14 [2020-07-28 17:55:01,188 INFO L226 Difference]: Without dead ends: 0 [2020-07-28 17:55:01,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-07-28 17:55:01,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-28 17:55:01,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-28 17:55:01,190 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:55:01,191 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-28 17:55:01,191 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:55:01,191 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:55:01,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:55:01,191 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:55:01,192 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:55:01,192 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:55:01,192 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:55:01,192 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:55:01,193 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:55:01,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:55:01,193 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:55:01,193 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:55:01,193 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:55:01,194 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:55:01,194 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:55:01,194 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:55:01,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-28 17:55:01,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-28 17:55:01,195 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-07-28 17:55:01,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:55:01,195 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-28 17:55:01,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-28 17:55:01,195 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:55:01,195 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:55:01,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-07-28 17:55:01,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-28 17:55:01,573 INFO L264 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp ((_ extract 31 31) ULTIMATE.start_copysign_float_~ix~0) ((_ extract 30 23) ULTIMATE.start_copysign_float_~ix~0) ((_ extract 22 0) ULTIMATE.start_copysign_float_~ix~0)) (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_copysign_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (not (fp.eq |ULTIMATE.start_copysign_float_#res| |ULTIMATE.start_copysign_float_#res|))) [2020-07-28 17:55:01,573 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-28 17:55:01,573 INFO L264 CegarLoopResult]: At program point L29(lines 12 30) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp ((_ extract 31 31) ULTIMATE.start_copysign_float_~ix~0) ((_ extract 30 23) ULTIMATE.start_copysign_float_~ix~0) ((_ extract 22 0) ULTIMATE.start_copysign_float_~ix~0)) (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_copysign_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (not (fp.eq |ULTIMATE.start_copysign_float_#res| |ULTIMATE.start_copysign_float_#res|))) [2020-07-28 17:55:01,573 INFO L268 CegarLoopResult]: For program point L19(lines 19 23) no Hoare annotation was computed. [2020-07-28 17:55:01,573 INFO L268 CegarLoopResult]: For program point L19-1(lines 12 30) no Hoare annotation was computed. [2020-07-28 17:55:01,574 INFO L268 CegarLoopResult]: For program point L48(lines 48 51) no Hoare annotation was computed. [2020-07-28 17:55:01,574 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-07-28 17:55:01,574 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-28 17:55:01,574 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-28 17:55:01,574 INFO L268 CegarLoopResult]: For program point L24(lines 24 28) no Hoare annotation was computed. [2020-07-28 17:55:01,574 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 49) no Hoare annotation was computed. [2020-07-28 17:55:01,575 INFO L268 CegarLoopResult]: For program point L24-1(lines 12 30) no Hoare annotation was computed. [2020-07-28 17:55:01,575 INFO L268 CegarLoopResult]: For program point L24-2(lines 24 28) no Hoare annotation was computed. [2020-07-28 17:55:01,575 INFO L271 CegarLoopResult]: At program point L53(lines 35 54) the Hoare annotation is: true [2020-07-28 17:55:01,575 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-28 17:55:01,575 INFO L268 CegarLoopResult]: For program point L14-1(lines 14 18) no Hoare annotation was computed. [2020-07-28 17:55:01,575 INFO L264 CegarLoopResult]: At program point L14-2(lines 14 18) the Hoare annotation is: (not (fp.eq ULTIMATE.start_copysign_float_~x ULTIMATE.start_copysign_float_~x)) [2020-07-28 17:55:01,580 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:55:01,581 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 17:55:01,581 WARN L170 areAnnotationChecker]: L14-1 has no Hoare annotation [2020-07-28 17:55:01,581 WARN L170 areAnnotationChecker]: L19-1 has no Hoare annotation [2020-07-28 17:55:01,581 WARN L170 areAnnotationChecker]: L14-1 has no Hoare annotation [2020-07-28 17:55:01,581 WARN L170 areAnnotationChecker]: L14-1 has no Hoare annotation [2020-07-28 17:55:01,581 WARN L170 areAnnotationChecker]: L19-1 has no Hoare annotation [2020-07-28 17:55:01,581 WARN L170 areAnnotationChecker]: L19-1 has no Hoare annotation [2020-07-28 17:55:01,582 WARN L170 areAnnotationChecker]: L19 has no Hoare annotation [2020-07-28 17:55:01,582 WARN L170 areAnnotationChecker]: L19 has no Hoare annotation [2020-07-28 17:55:01,582 WARN L170 areAnnotationChecker]: L24-1 has no Hoare annotation [2020-07-28 17:55:01,582 WARN L170 areAnnotationChecker]: L24-1 has no Hoare annotation [2020-07-28 17:55:01,582 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2020-07-28 17:55:01,582 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2020-07-28 17:55:01,582 WARN L170 areAnnotationChecker]: L24-2 has no Hoare annotation [2020-07-28 17:55:01,585 WARN L170 areAnnotationChecker]: L48 has no Hoare annotation [2020-07-28 17:55:01,586 WARN L170 areAnnotationChecker]: L48 has no Hoare annotation [2020-07-28 17:55:01,586 WARN L170 areAnnotationChecker]: L48 has no Hoare annotation [2020-07-28 17:55:01,586 WARN L170 areAnnotationChecker]: L49 has no Hoare annotation [2020-07-28 17:55:01,586 WARN L170 areAnnotationChecker]: L49 has no Hoare annotation [2020-07-28 17:55:01,586 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:55:01,587 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:55:01,587 INFO L163 areAnnotationChecker]: CFG has 1 edges. 1 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 17:55:01,594 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:55:01,595 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:55:01,599 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:55:01,599 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:55:01,602 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:55:01,602 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:55:01,603 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:55:01,603 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:55:01,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:55:01 BoogieIcfgContainer [2020-07-28 17:55:01,606 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:55:01,607 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:55:01,607 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:55:01,607 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:55:01,608 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:54:58" (3/4) ... [2020-07-28 17:55:01,612 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-07-28 17:55:01,623 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-07-28 17:55:01,624 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-07-28 17:55:01,624 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-07-28 17:55:01,669 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 17:55:01,670 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:55:01,673 INFO L168 Benchmark]: Toolchain (without parser) took 4121.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 961.6 MB in the beginning and 920.0 MB in the end (delta: 41.6 MB). Peak memory consumption was 172.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:55:01,674 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:55:01,675 INFO L168 Benchmark]: CACSL2BoogieTranslator took 367.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 961.6 MB in the beginning and 1.1 GB in the end (delta: -165.6 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:55:01,676 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.43 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 17:55:01,676 INFO L168 Benchmark]: Boogie Preprocessor took 39.31 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 17:55:01,677 INFO L168 Benchmark]: RCFGBuilder took 508.13 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: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. [2020-07-28 17:55:01,678 INFO L168 Benchmark]: TraceAbstraction took 3083.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 920.0 MB in the end (delta: 173.5 MB). Peak memory consumption was 173.5 MB. Max. memory is 11.5 GB. [2020-07-28 17:55:01,679 INFO L168 Benchmark]: Witness Printer took 63.23 ms. Allocated memory is still 1.2 GB. Free memory is still 920.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:55:01,683 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 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 367.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 961.6 MB in the beginning and 1.1 GB in the end (delta: -165.6 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 52.43 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. * Boogie Preprocessor took 39.31 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 508.13 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: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3083.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 920.0 MB in the end (delta: 173.5 MB). Peak memory consumption was 173.5 MB. Max. memory is 11.5 GB. * Witness Printer took 63.23 ms. Allocated memory is still 1.2 GB. Free memory is still 920.0 MB. 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] - 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: 49]: 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: 35]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 33]: Loop Invariant [2020-07-28 17:55:01,694 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:55:01,695 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:55:01,696 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:55:01,696 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (((\exists currentRoundingMode : FloatRoundingMode :: ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]) == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && 1bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && !~fp.eq~FLOAT(\result, \result) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 12]: Loop Invariant [2020-07-28 17:55:01,697 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:55:01,698 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:55:01,698 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:55:01,699 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]) == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && !~fp.eq~FLOAT(\result, \result) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 14 SDslu, 24 SDs, 0 SdLazy, 20 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 58 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 42 ConstructedInterpolants, 12 QuantifiedInterpolants, 4098 SizeOfPredicates, 15 NumberOfNonLiveVariables, 75 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...