./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_1032b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_1032b.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 7fdec7243d1dcfe44b7db1591097bb1f5b9c1d53 .............................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_1032b.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 7fdec7243d1dcfe44b7db1591097bb1f5b9c1d53 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 16:54:40,128 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:54:40,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:54:40,148 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:54:40,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:54:40,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:54:40,154 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:54:40,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:54:40,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:54:40,173 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:54:40,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:54:40,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:54:40,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:54:40,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:54:40,181 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:54:40,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:54:40,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:54:40,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:54:40,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:54:40,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:54:40,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:54:40,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:54:40,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:54:40,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:54:40,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:54:40,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:54:40,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:54:40,210 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:54:40,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:54:40,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:54:40,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:54:40,214 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:54:40,215 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:54:40,216 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:54:40,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:54:40,219 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:54:40,220 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:54:40,220 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:54:40,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:54:40,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:54:40,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:54:40,225 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:54:40,258 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:54:40,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:54:40,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:54:40,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:54:40,266 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:54:40,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:54:40,268 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:54:40,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:54:40,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:54:40,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:54:40,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:54:40,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:54:40,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:54:40,270 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:54:40,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:54:40,271 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:54:40,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:54:40,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:54:40,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:54:40,273 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:54:40,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:54:40,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:54:40,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:54:40,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:54:40,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:54:40,276 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:54:40,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:54:40,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:54:40,277 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:54:40,277 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 -> 7fdec7243d1dcfe44b7db1591097bb1f5b9c1d53 [2019-11-28 16:54:40,567 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:54:40,584 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:54:40,588 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:54:40,589 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:54:40,590 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:54:40,591 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1032b.c [2019-11-28 16:54:40,663 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ebec6902/d9d6d28a949744bb9c547fa6d7124f7e/FLAG906adc6c8 [2019-11-28 16:54:41,141 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:54:41,142 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1032b.c [2019-11-28 16:54:41,147 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ebec6902/d9d6d28a949744bb9c547fa6d7124f7e/FLAG906adc6c8 [2019-11-28 16:54:41,522 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ebec6902/d9d6d28a949744bb9c547fa6d7124f7e [2019-11-28 16:54:41,525 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:54:41,526 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:54:41,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:54:41,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:54:41,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:54:41,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:54:41" (1/1) ... [2019-11-28 16:54:41,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3345dbb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:54:41, skipping insertion in model container [2019-11-28 16:54:41,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:54:41" (1/1) ... [2019-11-28 16:54:41,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:54:41,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:54:41,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:54:41,772 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:54:41,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:54:41,827 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:54:41,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:54:41 WrapperNode [2019-11-28 16:54:41,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:54:41,828 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:54:41,828 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:54:41,828 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:54:41,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:54:41" (1/1) ... [2019-11-28 16:54:41,898 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:54:41" (1/1) ... [2019-11-28 16:54:41,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:54:41,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:54:41,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:54:41,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:54:41,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:54:41" (1/1) ... [2019-11-28 16:54:41,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:54:41" (1/1) ... [2019-11-28 16:54:41,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:54:41" (1/1) ... [2019-11-28 16:54:41,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:54:41" (1/1) ... [2019-11-28 16:54:41,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:54:41" (1/1) ... [2019-11-28 16:54:41,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:54:41" (1/1) ... [2019-11-28 16:54:41,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:54:41" (1/1) ... [2019-11-28 16:54:41,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:54:41,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:54:41,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:54:41,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:54:41,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:54:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:54:42,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:54:42,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-28 16:54:42,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 16:54:42,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-28 16:54:42,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:54:42,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:54:42,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 16:54:42,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:54:42,320 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:54:42,320 INFO L287 CfgBuilder]: Removed 14 assume(true) statements. [2019-11-28 16:54:42,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:54:42 BoogieIcfgContainer [2019-11-28 16:54:42,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:54:42,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:54:42,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:54:42,329 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:54:42,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:54:41" (1/3) ... [2019-11-28 16:54:42,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c42bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:54:42, skipping insertion in model container [2019-11-28 16:54:42,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:54:41" (2/3) ... [2019-11-28 16:54:42,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c42bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:54:42, skipping insertion in model container [2019-11-28 16:54:42,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:54:42" (3/3) ... [2019-11-28 16:54:42,335 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1032b.c [2019-11-28 16:54:42,354 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:54:42,363 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:54:42,377 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:54:42,403 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:54:42,403 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:54:42,403 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:54:42,404 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:54:42,404 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:54:42,404 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:54:42,404 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:54:42,405 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:54:42,423 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-11-28 16:54:42,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 16:54:42,430 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:54:42,431 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:54:42,432 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:54:42,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:54:42,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1590452317, now seen corresponding path program 1 times [2019-11-28 16:54:42,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:54:42,450 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317456664] [2019-11-28 16:54:42,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:54:42,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:54:42,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:54:42,559 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317456664] [2019-11-28 16:54:42,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:54:42,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 16:54:42,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987340240] [2019-11-28 16:54:42,565 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 16:54:42,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:54:42,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 16:54:42,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:54:42,583 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2019-11-28 16:54:42,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:54:42,605 INFO L93 Difference]: Finished difference Result 48 states and 72 transitions. [2019-11-28 16:54:42,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 16:54:42,607 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-28 16:54:42,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:54:42,616 INFO L225 Difference]: With dead ends: 48 [2019-11-28 16:54:42,616 INFO L226 Difference]: Without dead ends: 22 [2019-11-28 16:54:42,620 INFO L630 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 [2019-11-28 16:54:42,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-28 16:54:42,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-28 16:54:42,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-28 16:54:42,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2019-11-28 16:54:42,666 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 10 [2019-11-28 16:54:42,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:54:42,667 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2019-11-28 16:54:42,667 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 16:54:42,667 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2019-11-28 16:54:42,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 16:54:42,669 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:54:42,669 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:54:42,670 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:54:42,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:54:42,671 INFO L82 PathProgramCache]: Analyzing trace with hash -744854880, now seen corresponding path program 1 times [2019-11-28 16:54:42,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:54:42,671 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912270174] [2019-11-28 16:54:42,672 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:54:42,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:54:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:54:42,883 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 16:54:42,884 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:54:42,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:54:42 BoogieIcfgContainer [2019-11-28 16:54:42,923 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:54:42,924 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:54:42,924 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:54:42,924 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:54:42,925 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:54:42" (3/4) ... [2019-11-28 16:54:42,929 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 16:54:42,930 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:54:42,934 INFO L168 Benchmark]: Toolchain (without parser) took 1405.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -132.9 MB). Peak memory consumption was 10.2 MB. Max. memory is 11.5 GB. [2019-11-28 16:54:42,935 INFO L168 Benchmark]: CDTParser took 0.78 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:54:42,937 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.12 ms. Allocated memory is still 1.0 GB. Free memory was 955.0 MB in the beginning and 942.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-11-28 16:54:42,939 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 942.9 MB in the beginning and 1.1 GB in the end (delta: -190.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:54:42,940 INFO L168 Benchmark]: Boogie Preprocessor took 32.79 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:54:42,941 INFO L168 Benchmark]: RCFGBuilder took 367.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 11.5 GB. [2019-11-28 16:54:42,942 INFO L168 Benchmark]: TraceAbstraction took 599.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:54:42,943 INFO L168 Benchmark]: Witness Printer took 6.40 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:54:42,959 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 300.12 ms. Allocated memory is still 1.0 GB. Free memory was 955.0 MB in the beginning and 942.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 94.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 942.9 MB in the beginning and 1.1 GB in the end (delta: -190.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.79 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 367.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 599.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * Witness Printer took 6.40 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: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 79, overapproximation of bitwiseAnd at line 23, overapproximation of someUnaryFLOAToperation at line 75, overapproximation of someBinaryArithmeticFLOAToperation at line 43. Possible FailurePath: [L75] float x = -0.0f; [L13] __uint32_t w; [L15] int exponent_less_127; [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] exponent_less_127 = (int)((w & 0x7f800000) >> 23) - 127 [L25] COND FALSE !(exponent_less_127 < 23) [L41] COND TRUE exponent_less_127 == 128 [L43] return x + x; [L76] float res = round_float(x); [L79] EXPR res == -0.0f && __signbit_float(res) == 1 [L79] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L80] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 30 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=25occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 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, 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-f470102 [2019-11-28 16:54:44,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:54:44,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:54:45,005 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:54:45,006 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:54:45,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:54:45,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:54:45,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:54:45,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:54:45,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:54:45,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:54:45,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:54:45,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:54:45,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:54:45,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:54:45,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:54:45,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:54:45,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:54:45,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:54:45,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:54:45,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:54:45,028 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:54:45,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:54:45,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:54:45,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:54:45,032 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:54:45,033 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:54:45,033 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:54:45,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:54:45,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:54:45,035 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:54:45,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:54:45,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:54:45,038 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:54:45,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:54:45,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:54:45,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:54:45,040 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:54:45,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:54:45,042 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:54:45,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:54:45,043 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-28 16:54:45,058 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:54:45,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:54:45,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:54:45,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:54:45,060 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:54:45,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:54:45,061 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:54:45,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:54:45,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:54:45,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:54:45,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:54:45,062 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:54:45,063 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-28 16:54:45,063 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-28 16:54:45,063 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:54:45,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:54:45,064 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:54:45,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:54:45,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:54:45,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:54:45,065 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:54:45,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:54:45,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:54:45,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:54:45,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:54:45,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:54:45,067 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-28 16:54:45,067 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-28 16:54:45,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:54:45,067 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:54:45,068 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-28 16:54:45,068 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 -> 7fdec7243d1dcfe44b7db1591097bb1f5b9c1d53 [2019-11-28 16:54:45,387 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:54:45,400 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:54:45,404 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:54:45,405 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:54:45,406 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:54:45,407 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1032b.c [2019-11-28 16:54:45,470 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59564bf20/4f9bbe77ccfc4435ad92cd3ad27ccb1c/FLAG97c8d58a6 [2019-11-28 16:54:45,954 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:54:45,955 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1032b.c [2019-11-28 16:54:45,964 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59564bf20/4f9bbe77ccfc4435ad92cd3ad27ccb1c/FLAG97c8d58a6 [2019-11-28 16:54:46,314 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59564bf20/4f9bbe77ccfc4435ad92cd3ad27ccb1c [2019-11-28 16:54:46,318 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:54:46,320 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:54:46,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:54:46,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:54:46,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:54:46,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:54:46" (1/1) ... [2019-11-28 16:54:46,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51010f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:54:46, skipping insertion in model container [2019-11-28 16:54:46,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:54:46" (1/1) ... [2019-11-28 16:54:46,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:54:46,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:54:46,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:54:46,623 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:54:46,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:54:46,749 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:54:46,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:54:46 WrapperNode [2019-11-28 16:54:46,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:54:46,752 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:54:46,752 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:54:46,754 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:54:46,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:54:46" (1/1) ... [2019-11-28 16:54:46,786 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:54:46" (1/1) ... [2019-11-28 16:54:46,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:54:46,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:54:46,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:54:46,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:54:46,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:54:46" (1/1) ... [2019-11-28 16:54:46,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:54:46" (1/1) ... [2019-11-28 16:54:46,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:54:46" (1/1) ... [2019-11-28 16:54:46,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:54:46" (1/1) ... [2019-11-28 16:54:46,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:54:46" (1/1) ... [2019-11-28 16:54:46,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:54:46" (1/1) ... [2019-11-28 16:54:46,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:54:46" (1/1) ... [2019-11-28 16:54:46,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:54:46,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:54:46,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:54:46,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:54:46,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:54:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:54:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:54:46,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-11-28 16:54:46,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-28 16:54:46,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:54:46,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:54:46,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-28 16:54:46,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-28 16:54:46,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:54:47,303 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:54:47,303 INFO L287 CfgBuilder]: Removed 14 assume(true) statements. [2019-11-28 16:54:47,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:54:47 BoogieIcfgContainer [2019-11-28 16:54:47,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:54:47,306 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:54:47,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:54:47,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:54:47,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:54:46" (1/3) ... [2019-11-28 16:54:47,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@373d975e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:54:47, skipping insertion in model container [2019-11-28 16:54:47,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:54:46" (2/3) ... [2019-11-28 16:54:47,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@373d975e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:54:47, skipping insertion in model container [2019-11-28 16:54:47,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:54:47" (3/3) ... [2019-11-28 16:54:47,313 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1032b.c [2019-11-28 16:54:47,323 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:54:47,331 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:54:47,345 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:54:47,367 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:54:47,368 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:54:47,368 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:54:47,368 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:54:47,368 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:54:47,368 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:54:47,368 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:54:47,368 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:54:47,380 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-11-28 16:54:47,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 16:54:47,387 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:54:47,388 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:54:47,389 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:54:47,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:54:47,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1590452317, now seen corresponding path program 1 times [2019-11-28 16:54:47,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:54:47,403 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1274029359] [2019-11-28 16:54:47,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-28 16:54:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:54:47,497 INFO L264 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-28 16:54:47,501 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:54:47,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:54:47,514 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:54:47,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:54:47,519 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1274029359] [2019-11-28 16:54:47,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:54:47,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-28 16:54:47,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491071201] [2019-11-28 16:54:47,527 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 16:54:47,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:54:47,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 16:54:47,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:54:47,545 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2019-11-28 16:54:47,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:54:47,565 INFO L93 Difference]: Finished difference Result 48 states and 72 transitions. [2019-11-28 16:54:47,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 16:54:47,566 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-28 16:54:47,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:54:47,576 INFO L225 Difference]: With dead ends: 48 [2019-11-28 16:54:47,577 INFO L226 Difference]: Without dead ends: 22 [2019-11-28 16:54:47,580 INFO L630 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 [2019-11-28 16:54:47,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-28 16:54:47,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-28 16:54:47,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-28 16:54:47,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2019-11-28 16:54:47,619 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 10 [2019-11-28 16:54:47,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:54:47,619 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2019-11-28 16:54:47,619 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 16:54:47,620 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2019-11-28 16:54:47,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 16:54:47,621 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:54:47,621 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:54:47,834 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-28 16:54:47,835 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:54:47,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:54:47,835 INFO L82 PathProgramCache]: Analyzing trace with hash -744854880, now seen corresponding path program 1 times [2019-11-28 16:54:47,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:54:47,836 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1109178541] [2019-11-28 16:54:47,837 INFO L94 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 [2019-11-28 16:54:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:54:47,908 INFO L264 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 16:54:47,911 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:54:48,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:54:48,002 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:54:48,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:54:48,108 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1109178541] [2019-11-28 16:54:48,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:54:48,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-28 16:54:48,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187452264] [2019-11-28 16:54:48,112 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 16:54:48,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:54:48,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 16:54:48,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-28 16:54:48,114 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand 8 states. [2019-11-28 16:54:48,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:54:48,254 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2019-11-28 16:54:48,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 16:54:48,255 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2019-11-28 16:54:48,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:54:48,256 INFO L225 Difference]: With dead ends: 34 [2019-11-28 16:54:48,256 INFO L226 Difference]: Without dead ends: 20 [2019-11-28 16:54:48,258 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-11-28 16:54:48,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-28 16:54:48,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-28 16:54:48,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-28 16:54:48,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2019-11-28 16:54:48,266 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 11 [2019-11-28 16:54:48,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:54:48,268 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2019-11-28 16:54:48,268 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 16:54:48,269 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2019-11-28 16:54:48,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 16:54:48,271 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:54:48,271 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:54:48,472 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-28 16:54:48,472 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:54:48,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:54:48,473 INFO L82 PathProgramCache]: Analyzing trace with hash 3095257, now seen corresponding path program 1 times [2019-11-28 16:54:48,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:54:48,475 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96723256] [2019-11-28 16:54:48,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-11-28 16:54:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:54:48,534 INFO L264 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 16:54:48,536 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:54:48,589 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:54:48,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:54:48,618 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:54:48,621 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:54:48,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:54:48,686 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96723256] [2019-11-28 16:54:48,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:54:48,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-11-28 16:54:48,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853075100] [2019-11-28 16:54:48,688 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-28 16:54:48,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:54:48,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-28 16:54:48,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-28 16:54:48,689 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 9 states. [2019-11-28 16:54:48,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:54:48,922 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2019-11-28 16:54:48,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 16:54:48,924 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2019-11-28 16:54:48,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:54:48,924 INFO L225 Difference]: With dead ends: 23 [2019-11-28 16:54:48,925 INFO L226 Difference]: Without dead ends: 20 [2019-11-28 16:54:48,925 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2019-11-28 16:54:48,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-28 16:54:48,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-28 16:54:48,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-28 16:54:48,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2019-11-28 16:54:48,930 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 15 [2019-11-28 16:54:48,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:54:48,931 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2019-11-28 16:54:48,931 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-28 16:54:48,931 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2019-11-28 16:54:48,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-28 16:54:48,932 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:54:48,932 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:54:49,143 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-28 16:54:49,144 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:54:49,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:54:49,144 INFO L82 PathProgramCache]: Analyzing trace with hash -318448082, now seen corresponding path program 1 times [2019-11-28 16:54:49,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:54:49,146 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1547051719] [2019-11-28 16:54:49,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-11-28 16:54:49,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:54:49,224 INFO L264 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-28 16:54:49,229 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:54:49,322 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:54:49,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:54:49,365 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:54:49,368 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:54:49,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:54:49,785 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1547051719] [2019-11-28 16:54:49,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:54:49,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 11] imperfect sequences [] total 17 [2019-11-28 16:54:49,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654992764] [2019-11-28 16:54:49,788 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-28 16:54:49,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:54:49,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-28 16:54:49,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2019-11-28 16:54:49,791 INFO L87 Difference]: Start difference. First operand 20 states and 19 transitions. Second operand 17 states. [2019-11-28 16:54:50,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:54:50,149 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2019-11-28 16:54:50,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 16:54:50,151 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 19 [2019-11-28 16:54:50,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:54:50,152 INFO L225 Difference]: With dead ends: 20 [2019-11-28 16:54:50,152 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 16:54:50,153 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2019-11-28 16:54:50,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 16:54:50,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 16:54:50,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 16:54:50,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 16:54:50,154 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2019-11-28 16:54:50,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:54:50,154 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 16:54:50,154 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-28 16:54:50,154 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 16:54:50,155 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 16:54:50,363 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-28 16:54:50,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 16:54:50,690 INFO L242 CegarLoopResult]: At program point L64(lines 55 65) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= .cse0 |ULTIMATE.start_round_float_#res|) (exists ((ULTIMATE.start_round_float_~w~0 (_ BitVec 32))) (and (= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (fp.neg (_ +zero 8 24))) (= (bvadd (bvlshr (bvand (_ bv2139095040 32) ULTIMATE.start_round_float_~w~0) (_ bv23 32)) (_ bv4294967169 32)) ULTIMATE.start_round_float_~exponent_less_127~0))) (= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) .cse0) |ULTIMATE.start_main_#t~short8| (= ULTIMATE.start_main_~res~0 .cse0) (= (_ bv0 32) (bvadd |ULTIMATE.start___signbit_float_#res| (_ bv4294967295 32))) (= (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~1) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~1) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~1)) .cse0) (= ULTIMATE.start___signbit_float_~x .cse0) (= ULTIMATE.start_round_float_~x .cse0))) [2019-11-28 16:54:50,690 INFO L242 CegarLoopResult]: At program point L52(lines 12 53) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= .cse0 |ULTIMATE.start_round_float_#res|) (exists ((ULTIMATE.start_round_float_~w~0 (_ BitVec 32))) (and (= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (fp.neg (_ +zero 8 24))) (= (bvadd (bvlshr (bvand (_ bv2139095040 32) ULTIMATE.start_round_float_~w~0) (_ bv23 32)) (_ bv4294967169 32)) ULTIMATE.start_round_float_~exponent_less_127~0))) (= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) .cse0) (= ULTIMATE.start_round_float_~x .cse0))) [2019-11-28 16:54:50,690 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-28 16:54:50,690 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 16:54:50,691 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 16:54:50,691 INFO L246 CegarLoopResult]: For program point L28(lines 28 30) no Hoare annotation was computed. [2019-11-28 16:54:50,691 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 80) no Hoare annotation was computed. [2019-11-28 16:54:50,691 INFO L246 CegarLoopResult]: For program point L41(lines 41 45) no Hoare annotation was computed. [2019-11-28 16:54:50,691 INFO L246 CegarLoopResult]: For program point L33(lines 33 35) no Hoare annotation was computed. [2019-11-28 16:54:50,691 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 16:54:50,691 INFO L246 CegarLoopResult]: For program point L25(lines 25 46) no Hoare annotation was computed. [2019-11-28 16:54:50,691 INFO L246 CegarLoopResult]: For program point L58-1(lines 58 62) no Hoare annotation was computed. [2019-11-28 16:54:50,692 INFO L242 CegarLoopResult]: At program point L58-2(lines 58 62) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= .cse0 |ULTIMATE.start_round_float_#res|) (exists ((ULTIMATE.start_round_float_~w~0 (_ BitVec 32))) (and (= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (fp.neg (_ +zero 8 24))) (= (bvadd (bvlshr (bvand (_ bv2139095040 32) ULTIMATE.start_round_float_~w~0) (_ bv23 32)) (_ bv4294967169 32)) ULTIMATE.start_round_float_~exponent_less_127~0))) (= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) .cse0) |ULTIMATE.start_main_#t~short8| (= ULTIMATE.start_main_~res~0 .cse0) (= ULTIMATE.start___signbit_float_~x .cse0) (= ULTIMATE.start_round_float_~x .cse0))) [2019-11-28 16:54:50,692 INFO L246 CegarLoopResult]: For program point L58-3(lines 58 62) no Hoare annotation was computed. [2019-11-28 16:54:50,692 INFO L246 CegarLoopResult]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2019-11-28 16:54:50,692 INFO L242 CegarLoopResult]: At program point L17-2(lines 17 21) the Hoare annotation is: (= ULTIMATE.start_round_float_~x (fp.neg (_ +zero 8 24))) [2019-11-28 16:54:50,692 INFO L246 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2019-11-28 16:54:50,692 INFO L246 CegarLoopResult]: For program point L17-3(lines 17 21) no Hoare annotation was computed. [2019-11-28 16:54:50,693 INFO L246 CegarLoopResult]: For program point L79-2(lines 79 82) no Hoare annotation was computed. [2019-11-28 16:54:50,693 INFO L246 CegarLoopResult]: For program point L26(lines 26 39) no Hoare annotation was computed. [2019-11-28 16:54:50,693 INFO L249 CegarLoopResult]: At program point L84(lines 67 85) the Hoare annotation is: true [2019-11-28 16:54:50,693 INFO L246 CegarLoopResult]: For program point L80(line 80) no Hoare annotation was computed. [2019-11-28 16:54:50,693 INFO L246 CegarLoopResult]: For program point L47(lines 47 51) no Hoare annotation was computed. [2019-11-28 16:54:50,694 INFO L246 CegarLoopResult]: For program point L47-1(lines 12 53) no Hoare annotation was computed. [2019-11-28 16:54:50,694 INFO L246 CegarLoopResult]: For program point L47-2(lines 47 51) no Hoare annotation was computed. [2019-11-28 16:54:50,710 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,711 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,712 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,712 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,714 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,714 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,715 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,715 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,717 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,717 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,718 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,718 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,719 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,720 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,720 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,720 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,725 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,725 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,725 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,726 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,727 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,727 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,728 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,728 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:54:50 BoogieIcfgContainer [2019-11-28 16:54:50,731 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:54:50,732 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:54:50,732 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:54:50,732 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:54:50,733 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:54:47" (3/4) ... [2019-11-28 16:54:50,742 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 16:54:50,764 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-28 16:54:50,765 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-28 16:54:50,765 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 16:54:50,792 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == \result && (\exists ULTIMATE.start_round_float_~w~0 : bv32 :: ~fp~LONGDOUBLE(ULTIMATE.start_round_float_~w~0[31:31], ULTIMATE.start_round_float_~w~0[30:23], ULTIMATE.start_round_float_~w~0[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && ~bvadd64(~bvlshr32(~bvand32(2139095040bv32, ULTIMATE.start_round_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127)) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2019-11-28 16:54:50,793 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == \result && (\exists ULTIMATE.start_round_float_~w~0 : bv32 :: ~fp~LONGDOUBLE(ULTIMATE.start_round_float_~w~0[31:31], ULTIMATE.start_round_float_~w~0[30:23], ULTIMATE.start_round_float_~w~0[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && ~bvadd64(~bvlshr32(~bvand32(2139095040bv32, ULTIMATE.start_round_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127)) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2019-11-28 16:54:50,793 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == \result && (\exists ULTIMATE.start_round_float_~w~0 : bv32 :: ~fp~LONGDOUBLE(ULTIMATE.start_round_float_~w~0[31:31], ULTIMATE.start_round_float_~w~0[30:23], ULTIMATE.start_round_float_~w~0[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && ~bvadd64(~bvlshr32(~bvand32(2139095040bv32, ULTIMATE.start_round_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127)) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && 0bv32 == ~bvadd64(\result, 4294967295bv32)) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2019-11-28 16:54:50,833 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 16:54:50,837 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:54:50,839 INFO L168 Benchmark]: Toolchain (without parser) took 4519.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 957.7 MB in the beginning and 920.6 MB in the end (delta: 37.1 MB). Peak memory consumption was 190.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:54:50,840 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:54:50,840 INFO L168 Benchmark]: CACSL2BoogieTranslator took 430.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -192.3 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:54:50,841 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.94 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:54:50,841 INFO L168 Benchmark]: Boogie Preprocessor took 37.40 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:54:50,842 INFO L168 Benchmark]: RCFGBuilder took 456.38 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: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:54:50,843 INFO L168 Benchmark]: TraceAbstraction took 3425.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 927.2 MB in the end (delta: 190.5 MB). Peak memory consumption was 190.5 MB. Max. memory is 11.5 GB. [2019-11-28 16:54:50,843 INFO L168 Benchmark]: Witness Printer took 105.13 ms. Allocated memory is still 1.2 GB. Free memory was 927.2 MB in the beginning and 920.6 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:54:50,846 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 430.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -192.3 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 58.94 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.40 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 456.38 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: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3425.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 927.2 MB in the end (delta: 190.5 MB). Peak memory consumption was 190.5 MB. Max. memory is 11.5 GB. * Witness Printer took 105.13 ms. Allocated memory is still 1.2 GB. Free memory was 927.2 MB in the beginning and 920.6 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. 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[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 80]: 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: 17]: Loop Invariant Derived loop invariant: x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 55]: Loop Invariant [2019-11-28 16:54:50,858 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,858 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,858 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,859 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,860 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,860 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,860 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,861 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] Derived loop invariant: (((((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == \result && (\exists ULTIMATE.start_round_float_~w~0 : bv32 :: ~fp~LONGDOUBLE(ULTIMATE.start_round_float_~w~0[31:31], ULTIMATE.start_round_float_~w~0[30:23], ULTIMATE.start_round_float_~w~0[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && ~bvadd64(~bvlshr32(~bvand32(2139095040bv32, ULTIMATE.start_round_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127)) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && 0bv32 == ~bvadd64(\result, 4294967295bv32)) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 58]: Loop Invariant [2019-11-28 16:54:50,862 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,862 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,862 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,863 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,864 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,864 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,864 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,865 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] Derived loop invariant: (((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == \result && (\exists ULTIMATE.start_round_float_~w~0 : bv32 :: ~fp~LONGDOUBLE(ULTIMATE.start_round_float_~w~0[31:31], ULTIMATE.start_round_float_~w~0[30:23], ULTIMATE.start_round_float_~w~0[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && ~bvadd64(~bvlshr32(~bvand32(2139095040bv32, ULTIMATE.start_round_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127)) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 12]: Loop Invariant [2019-11-28 16:54:50,866 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,866 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,866 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,866 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,867 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,867 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,868 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2019-11-28 16:54:50,868 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] Derived loop invariant: ((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == \result && (\exists ULTIMATE.start_round_float_~w~0 : bv32 :: ~fp~LONGDOUBLE(ULTIMATE.start_round_float_~w~0[31:31], ULTIMATE.start_round_float_~w~0[30:23], ULTIMATE.start_round_float_~w~0[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && ~bvadd64(~bvlshr32(~bvand32(2139095040bv32, ULTIMATE.start_round_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127)) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. Result: SAFE, OverallTime: 2.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, HoareTripleCheckerStatistics: 62 SDtfs, 163 SDslu, 63 SDs, 0 SdLazy, 89 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 72 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 10 NumberOfFragments, 158 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 59 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 102 ConstructedInterpolants, 19 QuantifiedInterpolants, 10036 SizeOfPredicates, 25 NumberOfNonLiveVariables, 146 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...