./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_0920a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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_0920a.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8aa1a92a1779a20f74a516c833d3b843eed96e54 ................................................................................................................................................................................................................................................................................................................................................. 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 -Xmx15G -Xms4m -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_0920a.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8aa1a92a1779a20f74a516c833d3b843eed96e54 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:38:15,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:38:15,477 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:38:15,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:38:15,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:38:15,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:38:15,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:38:15,515 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:38:15,517 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:38:15,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:38:15,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:38:15,520 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:38:15,520 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:38:15,521 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:38:15,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:38:15,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:38:15,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:38:15,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:38:15,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:38:15,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:38:15,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:38:15,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:38:15,541 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:38:15,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:38:15,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:38:15,545 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:38:15,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:38:15,549 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:38:15,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:38:15,550 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:38:15,550 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:38:15,551 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:38:15,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:38:15,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:38:15,556 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:38:15,556 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:38:15,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:38:15,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:38:15,557 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:38:15,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:38:15,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:38:15,560 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:38:15,611 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:38:15,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:38:15,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:38:15,616 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:38:15,616 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:38:15,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:38:15,616 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:38:15,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:38:15,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:38:15,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:38:15,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:38:15,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:38:15,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:38:15,618 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:38:15,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:38:15,619 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:38:15,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:38:15,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:38:15,620 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:38:15,620 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:38:15,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:38:15,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:38:15,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:38:15,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:38:15,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:38:15,621 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:38:15,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:38:15,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:38:15,622 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:38:15,622 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(reach_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 -> 8aa1a92a1779a20f74a516c833d3b843eed96e54 [2020-10-20 00:38:15,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:38:15,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:38:15,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:38:15,867 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:38:15,868 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:38:15,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0920a.c [2020-10-20 00:38:15,922 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8165dfc3e/b1ba3087c7424ba4878a7f570731bc55/FLAG8abe5c392 [2020-10-20 00:38:16,405 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:38:16,407 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0920a.c [2020-10-20 00:38:16,416 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8165dfc3e/b1ba3087c7424ba4878a7f570731bc55/FLAG8abe5c392 [2020-10-20 00:38:16,778 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8165dfc3e/b1ba3087c7424ba4878a7f570731bc55 [2020-10-20 00:38:16,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:38:16,787 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:38:16,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:38:16,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:38:16,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:38:16,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:38:16" (1/1) ... [2020-10-20 00:38:16,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58167e33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:38:16, skipping insertion in model container [2020-10-20 00:38:16,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:38:16" (1/1) ... [2020-10-20 00:38:16,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:38:16,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:38:17,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:38:17,100 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:38:17,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:38:17,160 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:38:17,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:38:17 WrapperNode [2020-10-20 00:38:17,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:38:17,162 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:38:17,162 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:38:17,162 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:38:17,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:38:17" (1/1) ... [2020-10-20 00:38:17,183 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:38:17" (1/1) ... [2020-10-20 00:38:17,211 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:38:17,212 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:38:17,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:38:17,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:38:17,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:38:17" (1/1) ... [2020-10-20 00:38:17,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:38:17" (1/1) ... [2020-10-20 00:38:17,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:38:17" (1/1) ... [2020-10-20 00:38:17,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:38:17" (1/1) ... [2020-10-20 00:38:17,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:38:17" (1/1) ... [2020-10-20 00:38:17,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:38:17" (1/1) ... [2020-10-20 00:38:17,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:38:17" (1/1) ... [2020-10-20 00:38:17,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:38:17,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:38:17,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:38:17,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:38:17,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:38:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:38:17,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:38:17,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:38:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-20 00:38:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:38:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-20 00:38:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:38:17,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:38:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:38:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:38:17,684 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:38:17,684 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-20 00:38:17,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:38:17 BoogieIcfgContainer [2020-10-20 00:38:17,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:38:17,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:38:17,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:38:17,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:38:17,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:38:16" (1/3) ... [2020-10-20 00:38:17,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d30e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:38:17, skipping insertion in model container [2020-10-20 00:38:17,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:38:17" (2/3) ... [2020-10-20 00:38:17,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d30e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:38:17, skipping insertion in model container [2020-10-20 00:38:17,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:38:17" (3/3) ... [2020-10-20 00:38:17,696 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0920a.c [2020-10-20 00:38:17,709 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:38:17,717 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:38:17,733 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:38:17,761 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:38:17,761 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:38:17,762 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:38:17,762 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:38:17,762 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:38:17,762 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:38:17,762 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:38:17,762 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:38:17,785 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-20 00:38:17,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:38:17,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:38:17,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:38:17,795 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:38:17,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:38:17,812 INFO L82 PathProgramCache]: Analyzing trace with hash 627170052, now seen corresponding path program 1 times [2020-10-20 00:38:17,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:38:17,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316653311] [2020-10-20 00:38:17,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:38:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:38:18,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:38:18,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316653311] [2020-10-20 00:38:18,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:38:18,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:38:18,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242132393] [2020-10-20 00:38:18,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:38:18,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:38:18,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:38:18,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:38:18,058 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2020-10-20 00:38:18,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:38:18,091 INFO L93 Difference]: Finished difference Result 72 states and 113 transitions. [2020-10-20 00:38:18,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:38:18,094 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-20 00:38:18,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:38:18,116 INFO L225 Difference]: With dead ends: 72 [2020-10-20 00:38:18,116 INFO L226 Difference]: Without dead ends: 33 [2020-10-20 00:38:18,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:38:18,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-20 00:38:18,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-20 00:38:18,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-20 00:38:18,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2020-10-20 00:38:18,168 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 11 [2020-10-20 00:38:18,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:38:18,170 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2020-10-20 00:38:18,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:38:18,170 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2020-10-20 00:38:18,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 00:38:18,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:38:18,172 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:38:18,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:38:18,173 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:38:18,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:38:18,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1650641455, now seen corresponding path program 1 times [2020-10-20 00:38:18,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:38:18,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248758920] [2020-10-20 00:38:18,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:38:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:38:18,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:38:18,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248758920] [2020-10-20 00:38:18,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:38:18,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 00:38:18,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030242967] [2020-10-20 00:38:18,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 00:38:18,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:38:18,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 00:38:18,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:38:18,242 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand 3 states. [2020-10-20 00:38:18,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:38:18,261 INFO L93 Difference]: Finished difference Result 59 states and 80 transitions. [2020-10-20 00:38:18,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 00:38:18,262 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-20 00:38:18,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:38:18,263 INFO L225 Difference]: With dead ends: 59 [2020-10-20 00:38:18,263 INFO L226 Difference]: Without dead ends: 33 [2020-10-20 00:38:18,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:38:18,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-20 00:38:18,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-20 00:38:18,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-20 00:38:18,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2020-10-20 00:38:18,278 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 12 [2020-10-20 00:38:18,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:38:18,279 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2020-10-20 00:38:18,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 00:38:18,279 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2020-10-20 00:38:18,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 00:38:18,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:38:18,280 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:38:18,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:38:18,280 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:38:18,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:38:18,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1227406364, now seen corresponding path program 1 times [2020-10-20 00:38:18,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:38:18,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190094286] [2020-10-20 00:38:18,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:38:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:38:18,342 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:38:18,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:38:18,417 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:38:18,476 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:38:18,477 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:38:18,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 00:38:18,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:38:18 BoogieIcfgContainer [2020-10-20 00:38:18,560 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:38:18,560 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:38:18,560 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:38:18,561 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:38:18,561 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:38:17" (3/4) ... [2020-10-20 00:38:18,565 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:38:18,565 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:38:18,568 INFO L168 Benchmark]: Toolchain (without parser) took 1783.40 ms. Allocated memory was 34.6 MB in the beginning and 48.2 MB in the end (delta: 13.6 MB). Free memory was 10.1 MB in the beginning and 18.2 MB in the end (delta: -8.0 MB). Peak memory consumption was 5.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:38:18,569 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 33.0 MB. Free memory was 16.8 MB in the beginning and 16.8 MB in the end (delta: 38.8 kB). Peak memory consumption was 38.8 kB. Max. memory is 14.3 GB. [2020-10-20 00:38:18,570 INFO L168 Benchmark]: CACSL2BoogieTranslator took 373.23 ms. Allocated memory was 34.6 MB in the beginning and 43.5 MB in the end (delta: 8.9 MB). Free memory was 9.2 MB in the beginning and 22.2 MB in the end (delta: -13.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:38:18,570 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.96 ms. Allocated memory is still 43.5 MB. Free memory was 22.2 MB in the beginning and 19.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:38:18,571 INFO L168 Benchmark]: Boogie Preprocessor took 32.26 ms. Allocated memory is still 43.5 MB. Free memory was 19.9 MB in the beginning and 18.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:38:18,572 INFO L168 Benchmark]: RCFGBuilder took 441.84 ms. Allocated memory was 43.5 MB in the beginning and 45.6 MB in the end (delta: 2.1 MB). Free memory was 17.8 MB in the beginning and 21.6 MB in the end (delta: -3.7 MB). Peak memory consumption was 5.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:38:18,573 INFO L168 Benchmark]: TraceAbstraction took 871.88 ms. Allocated memory was 45.6 MB in the beginning and 48.2 MB in the end (delta: 2.6 MB). Free memory was 21.0 MB in the beginning and 18.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 5.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:38:18,574 INFO L168 Benchmark]: Witness Printer took 4.63 ms. Allocated memory is still 48.2 MB. Free memory was 18.5 MB in the beginning and 18.2 MB in the end (delta: 373.7 kB). Peak memory consumption was 373.7 kB. Max. memory is 14.3 GB. [2020-10-20 00:38:18,580 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 33.0 MB. Free memory was 16.8 MB in the beginning and 16.8 MB in the end (delta: 38.8 kB). Peak memory consumption was 38.8 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 373.23 ms. Allocated memory was 34.6 MB in the beginning and 43.5 MB in the end (delta: 8.9 MB). Free memory was 9.2 MB in the beginning and 22.2 MB in the end (delta: -13.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 49.96 ms. Allocated memory is still 43.5 MB. Free memory was 22.2 MB in the beginning and 19.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 32.26 ms. Allocated memory is still 43.5 MB. Free memory was 19.9 MB in the beginning and 18.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * RCFGBuilder took 441.84 ms. Allocated memory was 43.5 MB in the beginning and 45.6 MB in the end (delta: 2.1 MB). Free memory was 17.8 MB in the beginning and 21.6 MB in the end (delta: -3.7 MB). Peak memory consumption was 5.9 MB. Max. memory is 14.3 GB. * TraceAbstraction took 871.88 ms. Allocated memory was 45.6 MB in the beginning and 48.2 MB in the end (delta: 2.6 MB). Free memory was 21.0 MB in the beginning and 18.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 5.1 MB. Max. memory is 14.3 GB. * Witness Printer took 4.63 ms. Allocated memory is still 48.2 MB. Free memory was 18.5 MB in the beginning and 18.2 MB in the end (delta: 373.7 kB). Peak memory consumption was 373.7 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 113, overapproximation of bitwiseAnd at line 45, overapproximation of someBinaryArithmeticFLOAToperation at line 46. Possible FailurePath: [L26-L30] static const float ln2_hi_log = 6.9313812256e-01, ln2_lo_log = 9.0580006145e-06, two25_log = 3.355443200e+07, Lg1_log = 6.6666668653e-01, Lg2_log = 4.0000000596e-01, Lg3_log = 2.8571429849e-01, Lg4_log = 2.2222198546e-01, Lg5_log = 1.8183572590e-01, Lg6_log = 1.5313838422e-01, Lg7_log = 1.4798198640e-01; [L32] static const float zero_log = 0.0; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L134] float x = __VERIFIER_nondet_float(); [L136] EXPR x < 0 && isfinite_float(x) [L117] __int32_t ix; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L119] ieee_float_shape_type gf_u; [L120] gf_u.value = (x) [L121] EXPR gf_u.word [L121] (ix) = gf_u.word [L123] ix &= 0x7fffffff [L124] return (((ix) < 0x7f800000L)); VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L136] EXPR x < 0 && isfinite_float(x) VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L136] COND TRUE (x < 0 && isfinite_float(x)) [L35] float hfsq, f, s, z, R, w, t1, t2, dk; [L36] __int32_t k, ix, i, j; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L39] ieee_float_shape_type gf_u; [L40] gf_u.value = (x) [L41] EXPR gf_u.word [L41] (ix) = gf_u.word [L44] k = 0 VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L45] COND TRUE ((ix & 0x7fffffff) == 0) [L46] return -two25_log / zero_log; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L138] float res = __ieee754_logf(x); [L113] return x != x; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L141] COND TRUE !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_0920a.c", 3, "reach_error") VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 93 SDtfs, 0 SDslu, 39 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 232 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:38:20,716 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-10-20 00:38:20,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:38:20,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:38:20,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:38:20,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:38:20,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:38:20,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:38:20,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:38:20,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:38:20,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:38:20,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:38:20,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:38:20,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:38:20,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:38:20,778 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:38:20,778 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:38:20,779 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:38:20,780 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:38:20,781 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:38:20,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:38:20,782 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:38:20,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:38:20,783 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:38:20,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:38:20,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:38:20,785 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:38:20,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:38:20,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:38:20,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:38:20,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:38:20,788 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:38:20,810 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:38:20,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:38:20,812 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:38:20,812 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:38:20,812 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:38:20,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:38:20,813 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:38:20,813 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:38:20,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:38:20,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:38:20,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:38:20,814 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:38:20,815 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:38:20,815 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:38:20,815 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:38:20,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:38:20,816 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:38:20,816 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:38:20,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:38:20,816 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:38:20,817 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:38:20,817 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:38:20,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:38:20,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:38:20,818 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:38:20,818 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:38:20,818 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:38:20,818 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:38:20,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:38:20,819 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:38:20,819 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:38:20,819 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(reach_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 -> 8aa1a92a1779a20f74a516c833d3b843eed96e54 [2020-10-20 00:38:21,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:38:21,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:38:21,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:38:21,035 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:38:21,035 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:38:21,036 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0920a.c [2020-10-20 00:38:21,095 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51e6205b3/a675ab588cdc4a479cde89f376ccebee/FLAGfe22d12b4 [2020-10-20 00:38:21,540 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:38:21,541 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0920a.c [2020-10-20 00:38:21,549 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51e6205b3/a675ab588cdc4a479cde89f376ccebee/FLAGfe22d12b4 [2020-10-20 00:38:21,924 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51e6205b3/a675ab588cdc4a479cde89f376ccebee [2020-10-20 00:38:21,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:38:21,934 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:38:21,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:38:21,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:38:21,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:38:21,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:38:21" (1/1) ... [2020-10-20 00:38:21,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11096152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:38:21, skipping insertion in model container [2020-10-20 00:38:21,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:38:21" (1/1) ... [2020-10-20 00:38:21,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:38:21,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:38:22,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:38:22,318 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:38:22,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:38:22,392 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:38:22,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:38:22 WrapperNode [2020-10-20 00:38:22,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:38:22,393 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:38:22,393 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:38:22,394 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:38:22,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:38:22" (1/1) ... [2020-10-20 00:38:22,417 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:38:22" (1/1) ... [2020-10-20 00:38:22,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:38:22,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:38:22,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:38:22,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:38:22,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:38:22" (1/1) ... [2020-10-20 00:38:22,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:38:22" (1/1) ... [2020-10-20 00:38:22,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:38:22" (1/1) ... [2020-10-20 00:38:22,462 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:38:22" (1/1) ... [2020-10-20 00:38:22,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:38:22" (1/1) ... [2020-10-20 00:38:22,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:38:22" (1/1) ... [2020-10-20 00:38:22,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:38:22" (1/1) ... [2020-10-20 00:38:22,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:38:22,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:38:22,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:38:22,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:38:22,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:38:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:38:22,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:38:22,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:38:22,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-10-20 00:38:22,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 00:38:22,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:38:22,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:38:22,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-10-20 00:38:22,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 00:38:22,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:38:35,352 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:38:35,353 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-20 00:38:35,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:38:35 BoogieIcfgContainer [2020-10-20 00:38:35,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:38:35,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:38:35,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:38:35,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:38:35,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:38:21" (1/3) ... [2020-10-20 00:38:35,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9dc2268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:38:35, skipping insertion in model container [2020-10-20 00:38:35,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:38:22" (2/3) ... [2020-10-20 00:38:35,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9dc2268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:38:35, skipping insertion in model container [2020-10-20 00:38:35,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:38:35" (3/3) ... [2020-10-20 00:38:35,363 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0920a.c [2020-10-20 00:38:35,373 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:38:35,379 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:38:35,389 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:38:35,420 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:38:35,420 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:38:35,420 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:38:35,420 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:38:35,421 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:38:35,421 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:38:35,421 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:38:35,421 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:38:35,436 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-20 00:38:35,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:38:35,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:38:35,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:38:35,443 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:38:35,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:38:35,448 INFO L82 PathProgramCache]: Analyzing trace with hash 627170052, now seen corresponding path program 1 times [2020-10-20 00:38:35,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:38:35,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2010215063] [2020-10-20 00:38:35,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-20 00:38:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:38:36,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:38:36,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:38:36,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:38:36,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:38:36,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:38:36,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2010215063] [2020-10-20 00:38:36,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:38:36,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:38:36,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441929174] [2020-10-20 00:38:36,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:38:36,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:38:36,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:38:36,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:38:36,055 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2020-10-20 00:38:36,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:38:36,101 INFO L93 Difference]: Finished difference Result 72 states and 113 transitions. [2020-10-20 00:38:36,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:38:36,102 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-20 00:38:36,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:38:36,116 INFO L225 Difference]: With dead ends: 72 [2020-10-20 00:38:36,116 INFO L226 Difference]: Without dead ends: 33 [2020-10-20 00:38:36,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:38:36,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-20 00:38:36,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-20 00:38:36,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-20 00:38:36,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2020-10-20 00:38:36,157 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 11 [2020-10-20 00:38:36,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:38:36,157 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2020-10-20 00:38:36,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:38:36,158 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2020-10-20 00:38:36,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 00:38:36,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:38:36,159 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:38:36,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:38:36,373 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:38:36,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:38:36,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1650641455, now seen corresponding path program 1 times [2020-10-20 00:38:36,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:38:36,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012672614] [2020-10-20 00:38:36,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-20 00:38:36,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:38:36,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 00:38:36,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:38:36,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:38:36,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:38:36,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:38:36,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012672614] [2020-10-20 00:38:36,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:38:36,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-20 00:38:36,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805573708] [2020-10-20 00:38:36,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 00:38:36,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:38:36,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 00:38:36,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:38:36,929 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand 3 states. [2020-10-20 00:38:36,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:38:36,965 INFO L93 Difference]: Finished difference Result 59 states and 80 transitions. [2020-10-20 00:38:36,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 00:38:36,967 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-20 00:38:36,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:38:36,968 INFO L225 Difference]: With dead ends: 59 [2020-10-20 00:38:36,968 INFO L226 Difference]: Without dead ends: 33 [2020-10-20 00:38:36,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:38:36,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-20 00:38:36,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-20 00:38:36,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-20 00:38:36,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2020-10-20 00:38:36,975 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 12 [2020-10-20 00:38:36,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:38:36,975 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2020-10-20 00:38:36,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 00:38:36,976 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2020-10-20 00:38:36,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 00:38:36,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:38:36,977 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:38:37,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:38:37,191 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:38:37,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:38:37,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1227406364, now seen corresponding path program 1 times [2020-10-20 00:38:37,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:38:37,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1328747328] [2020-10-20 00:38:37,195 INFO L95 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 [2020-10-20 00:38:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:38:37,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 00:38:37,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:38:37,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:38:37,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:38:38,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:38:38,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1328747328] [2020-10-20 00:38:38,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:38:38,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-10-20 00:38:38,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600776743] [2020-10-20 00:38:38,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 00:38:38,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:38:38,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 00:38:38,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-20 00:38:38,149 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand 10 states. [2020-10-20 00:38:38,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:38:38,923 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2020-10-20 00:38:38,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 00:38:38,972 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-10-20 00:38:38,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:38:38,973 INFO L225 Difference]: With dead ends: 38 [2020-10-20 00:38:38,973 INFO L226 Difference]: Without dead ends: 18 [2020-10-20 00:38:38,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-20 00:38:38,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-20 00:38:38,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-20 00:38:38,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-20 00:38:38,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2020-10-20 00:38:38,978 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 16 [2020-10-20 00:38:38,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:38:38,978 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2020-10-20 00:38:38,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 00:38:38,979 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2020-10-20 00:38:38,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 00:38:38,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:38:38,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:38:39,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 00:38:39,183 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:38:39,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:38:39,184 INFO L82 PathProgramCache]: Analyzing trace with hash -618100041, now seen corresponding path program 1 times [2020-10-20 00:38:39,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:38:39,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1592687811] [2020-10-20 00:38:39,186 INFO L95 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 [2020-10-20 00:38:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:38:39,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-20 00:38:39,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:38:39,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:38:39,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:38:41,756 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-10-20 00:38:41,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:38:41,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1592687811] [2020-10-20 00:38:41,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:38:41,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-10-20 00:38:41,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347863186] [2020-10-20 00:38:41,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 00:38:41,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:38:41,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 00:38:41,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-20 00:38:41,772 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 10 states. [2020-10-20 00:38:42,520 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2020-10-20 00:38:42,929 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 18 [2020-10-20 00:38:43,270 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-10-20 00:38:43,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:38:43,271 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2020-10-20 00:38:43,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 00:38:43,272 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-20 00:38:43,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:38:43,272 INFO L225 Difference]: With dead ends: 18 [2020-10-20 00:38:43,273 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 00:38:43,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-20 00:38:43,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 00:38:43,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 00:38:43,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 00:38:43,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 00:38:43,274 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-20 00:38:43,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:38:43,274 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 00:38:43,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 00:38:43,275 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 00:38:43,275 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 00:38:43,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-20 00:38:43,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 00:38:43,827 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-10-20 00:38:44,036 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-10-20 00:38:44,109 INFO L274 CegarLoopResult]: For program point L118-1(lines 118 122) no Hoare annotation was computed. [2020-10-20 00:38:44,110 INFO L270 CegarLoopResult]: At program point L118-2(lines 118 122) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short19| (= currentRoundingMode roundNearestTiesToEven) (exists ((v_prenex_4 RoundingMode)) (fp.lt ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) v_prenex_4 (_ bv0 32)))) (= ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)) ~zero_log~0)) [2020-10-20 00:38:44,110 INFO L274 CegarLoopResult]: For program point L118-3(lines 118 122) no Hoare annotation was computed. [2020-10-20 00:38:44,110 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-20 00:38:44,110 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-10-20 00:38:44,111 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 00:38:44,111 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 00:38:44,111 INFO L274 CegarLoopResult]: For program point L45(lines 45 46) no Hoare annotation was computed. [2020-10-20 00:38:44,111 INFO L274 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-10-20 00:38:44,111 INFO L274 CegarLoopResult]: For program point L136-2(lines 136 145) no Hoare annotation was computed. [2020-10-20 00:38:44,112 INFO L274 CegarLoopResult]: For program point L70(lines 70 86) no Hoare annotation was computed. [2020-10-20 00:38:44,112 INFO L274 CegarLoopResult]: For program point L136-4(lines 136 145) no Hoare annotation was computed. [2020-10-20 00:38:44,112 INFO L274 CegarLoopResult]: For program point L54-1(lines 54 58) no Hoare annotation was computed. [2020-10-20 00:38:44,112 INFO L270 CegarLoopResult]: At program point L54-2(lines 54 58) the Hoare annotation is: false [2020-10-20 00:38:44,112 INFO L274 CegarLoopResult]: For program point L71(lines 71 78) no Hoare annotation was computed. [2020-10-20 00:38:44,112 INFO L274 CegarLoopResult]: For program point L38-1(lines 38 42) no Hoare annotation was computed. [2020-10-20 00:38:44,112 INFO L270 CegarLoopResult]: At program point L38-2(lines 38 42) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (exists ((v_prenex_4 RoundingMode)) (fp.lt ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) v_prenex_4 (_ bv0 32)))) (= ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)) ~zero_log~0) (exists ((v_prenex_4 RoundingMode)) (fp.lt ULTIMATE.start___ieee754_logf_~x ((_ to_fp 8 24) v_prenex_4 (_ bv0 32))))) [2020-10-20 00:38:44,112 INFO L274 CegarLoopResult]: For program point L38-3(lines 38 42) no Hoare annotation was computed. [2020-10-20 00:38:44,112 INFO L274 CegarLoopResult]: For program point L63-1(lines 63 67) no Hoare annotation was computed. [2020-10-20 00:38:44,112 INFO L270 CegarLoopResult]: At program point L63-2(lines 63 67) the Hoare annotation is: false [2020-10-20 00:38:44,113 INFO L274 CegarLoopResult]: For program point L63-3(lines 63 67) no Hoare annotation was computed. [2020-10-20 00:38:44,113 INFO L270 CegarLoopResult]: At program point L113(line 113) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (exists ((v_prenex_4 RoundingMode)) (fp.lt ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) v_prenex_4 (_ bv0 32)))) (exists ((ULTIMATE.start___ieee754_logf_~x (_ FloatingPoint 8 24))) (= (fp.div roundNearestTiesToEven (fp.sub roundNearestTiesToEven ULTIMATE.start___ieee754_logf_~x ULTIMATE.start___ieee754_logf_~x) ((_ to_fp 8 24) roundNearestTiesToEven (_ +zero 11 53))) |ULTIMATE.start___ieee754_logf_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (= ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)) ~zero_log~0) (exists ((v_prenex_4 RoundingMode)) (fp.lt (fp ((_ extract 31 31) ULTIMATE.start___ieee754_logf_~ix~1) ((_ extract 30 23) ULTIMATE.start___ieee754_logf_~ix~1) ((_ extract 22 0) ULTIMATE.start___ieee754_logf_~ix~1)) ((_ to_fp 8 24) v_prenex_4 (_ bv0 32)))) (exists ((v_prenex_4 RoundingMode)) (fp.lt ULTIMATE.start___ieee754_logf_~x ((_ to_fp 8 24) v_prenex_4 (_ bv0 32))))) [2020-10-20 00:38:44,121 INFO L274 CegarLoopResult]: For program point L80(lines 80 85) no Hoare annotation was computed. [2020-10-20 00:38:44,121 INFO L274 CegarLoopResult]: For program point L47(lines 47 48) no Hoare annotation was computed. [2020-10-20 00:38:44,121 INFO L274 CegarLoopResult]: For program point L105(lines 105 108) no Hoare annotation was computed. [2020-10-20 00:38:44,122 INFO L274 CegarLoopResult]: For program point L72(lines 72 77) no Hoare annotation was computed. [2020-10-20 00:38:44,122 INFO L274 CegarLoopResult]: For program point L97(lines 97 109) no Hoare annotation was computed. [2020-10-20 00:38:44,122 INFO L277 CegarLoopResult]: At program point L147(lines 127 148) the Hoare annotation is: true [2020-10-20 00:38:44,122 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 00:38:44,122 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-20 00:38:44,123 INFO L274 CegarLoopResult]: For program point L49(lines 49 50) no Hoare annotation was computed. [2020-10-20 00:38:44,123 INFO L274 CegarLoopResult]: For program point L99(lines 99 103) no Hoare annotation was computed. [2020-10-20 00:38:44,123 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 00:38:44,123 INFO L270 CegarLoopResult]: At program point L124(lines 116 125) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short19| (= currentRoundingMode roundNearestTiesToEven) (exists ((v_prenex_4 RoundingMode)) (fp.lt ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) v_prenex_4 (_ bv0 32)))) (= ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)) ~zero_log~0)) [2020-10-20 00:38:44,123 INFO L274 CegarLoopResult]: For program point L141(lines 141 144) no Hoare annotation was computed. [2020-10-20 00:38:44,124 INFO L270 CegarLoopResult]: At program point L108(lines 34 110) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (exists ((v_prenex_4 RoundingMode)) (fp.lt ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) v_prenex_4 (_ bv0 32)))) (exists ((ULTIMATE.start___ieee754_logf_~x (_ FloatingPoint 8 24))) (= (fp.div roundNearestTiesToEven (fp.sub roundNearestTiesToEven ULTIMATE.start___ieee754_logf_~x ULTIMATE.start___ieee754_logf_~x) ((_ to_fp 8 24) roundNearestTiesToEven (_ +zero 11 53))) |ULTIMATE.start___ieee754_logf_#res|)) (= ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)) ~zero_log~0) (exists ((v_prenex_4 RoundingMode)) (fp.lt (fp ((_ extract 31 31) ULTIMATE.start___ieee754_logf_~ix~1) ((_ extract 30 23) ULTIMATE.start___ieee754_logf_~ix~1) ((_ extract 22 0) ULTIMATE.start___ieee754_logf_~ix~1)) ((_ to_fp 8 24) v_prenex_4 (_ bv0 32)))) (exists ((v_prenex_4 RoundingMode)) (fp.lt ULTIMATE.start___ieee754_logf_~x ((_ to_fp 8 24) v_prenex_4 (_ bv0 32))))) [2020-10-20 00:38:44,124 INFO L274 CegarLoopResult]: For program point L51(lines 51 59) no Hoare annotation was computed. [2020-10-20 00:38:44,124 INFO L274 CegarLoopResult]: For program point L51-1(lines 51 59) no Hoare annotation was computed. [2020-10-20 00:38:44,134 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,135 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,135 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,135 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,135 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-10-20 00:38:44,136 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-10-20 00:38:44,136 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,136 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,136 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,138 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:38:44,139 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:38:44,142 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,142 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,142 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,142 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,142 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-10-20 00:38:44,143 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-10-20 00:38:44,143 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,143 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,143 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,144 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:38:44,144 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:38:44,145 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,145 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,146 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:38:44,146 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:38:44,146 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,146 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,147 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:38:44,147 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:38:44,147 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,148 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,148 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,148 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,148 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-10-20 00:38:44,148 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-10-20 00:38:44,149 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,149 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,149 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,149 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:38:44,149 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:38:44,150 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,150 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,150 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,151 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,151 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-10-20 00:38:44,151 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-10-20 00:38:44,151 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,151 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,152 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,152 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:38:44,152 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:38:44,153 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,153 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,153 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:38:44,154 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:38:44,154 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,154 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,154 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:38:44,155 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:38:44,155 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,155 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,155 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,156 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:38:44,156 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:38:44,156 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,156 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,157 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,157 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:38:44,157 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:38:44,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:38:44 BoogieIcfgContainer [2020-10-20 00:38:44,162 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:38:44,162 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:38:44,162 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:38:44,162 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:38:44,163 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:38:35" (3/4) ... [2020-10-20 00:38:44,168 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 00:38:44,182 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-10-20 00:38:44,182 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-10-20 00:38:44,183 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 00:38:44,183 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 00:38:44,213 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((aux-x < 0 && isfinite_float(x)-aux && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && (\exists v_prenex_4 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_4, 0bv32)))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) == zero_log [2020-10-20 00:38:44,214 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((aux-x < 0 && isfinite_float(x)-aux && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && (\exists v_prenex_4 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_4, 0bv32)))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) == zero_log [2020-10-20 00:38:44,214 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists v_prenex_4 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_4, 0bv32)))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) == zero_log) && (\exists v_prenex_4 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_4, 0bv32))) [2020-10-20 00:38:44,215 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists v_prenex_4 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_4, 0bv32)))) && (\exists ULTIMATE.start___ieee754_logf_~x : C_FLOAT :: ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.sub~FLOAT(~roundNearestTiesToEven, ULTIMATE.start___ieee754_logf_~x, ULTIMATE.start___ieee754_logf_~x), ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE())) == \result)) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) == zero_log) && (\exists v_prenex_4 : FloatRoundingMode :: ~fp.lt~FLOAT(~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]), ~to_fp~LONGDOUBLE(v_prenex_4, 0bv32)))) && (\exists v_prenex_4 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_4, 0bv32))) [2020-10-20 00:38:44,216 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists v_prenex_4 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_4, 0bv32)))) && (\exists ULTIMATE.start___ieee754_logf_~x : C_FLOAT :: ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.sub~FLOAT(~roundNearestTiesToEven, ULTIMATE.start___ieee754_logf_~x, ULTIMATE.start___ieee754_logf_~x), ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE())) == \result)) && 1bv32 == \result) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) == zero_log) && (\exists v_prenex_4 : FloatRoundingMode :: ~fp.lt~FLOAT(~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]), ~to_fp~LONGDOUBLE(v_prenex_4, 0bv32)))) && (\exists v_prenex_4 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_4, 0bv32))) [2020-10-20 00:38:44,301 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:38:44,301 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:38:44,303 INFO L168 Benchmark]: Toolchain (without parser) took 22374.76 ms. Allocated memory was 34.6 MB in the beginning and 51.4 MB in the end (delta: 16.8 MB). Free memory was 11.9 MB in the beginning and 15.5 MB in the end (delta: -3.6 MB). Peak memory consumption was 13.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:38:44,303 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 33.0 MB. Free memory was 18.3 MB in the beginning and 18.2 MB in the end (delta: 30.5 kB). Peak memory consumption was 30.5 kB. Max. memory is 14.3 GB. [2020-10-20 00:38:44,303 INFO L168 Benchmark]: CACSL2BoogieTranslator took 457.88 ms. Allocated memory was 34.6 MB in the beginning and 43.5 MB in the end (delta: 8.9 MB). Free memory was 11.0 MB in the beginning and 18.5 MB in the end (delta: -7.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:38:44,304 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.42 ms. Allocated memory is still 43.5 MB. Free memory was 18.5 MB in the beginning and 16.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:38:44,304 INFO L168 Benchmark]: Boogie Preprocessor took 52.40 ms. Allocated memory was 43.5 MB in the beginning and 45.1 MB in the end (delta: 1.6 MB). Free memory was 16.0 MB in the beginning and 25.5 MB in the end (delta: -9.5 MB). Peak memory consumption was 4.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:38:44,305 INFO L168 Benchmark]: RCFGBuilder took 12856.20 ms. Allocated memory was 45.1 MB in the beginning and 45.6 MB in the end (delta: 524.3 kB). Free memory was 25.5 MB in the beginning and 13.5 MB in the end (delta: 12.0 MB). Peak memory consumption was 16.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:38:44,305 INFO L168 Benchmark]: TraceAbstraction took 8805.64 ms. Allocated memory was 45.6 MB in the beginning and 51.4 MB in the end (delta: 5.8 MB). Free memory was 12.9 MB in the beginning and 22.1 MB in the end (delta: -9.2 MB). Peak memory consumption was 8.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:38:44,306 INFO L168 Benchmark]: Witness Printer took 138.97 ms. Allocated memory is still 51.4 MB. Free memory was 22.1 MB in the beginning and 15.5 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:38:44,309 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 33.0 MB. Free memory was 18.3 MB in the beginning and 18.2 MB in the end (delta: 30.5 kB). Peak memory consumption was 30.5 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 457.88 ms. Allocated memory was 34.6 MB in the beginning and 43.5 MB in the end (delta: 8.9 MB). Free memory was 11.0 MB in the beginning and 18.5 MB in the end (delta: -7.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 52.42 ms. Allocated memory is still 43.5 MB. Free memory was 18.5 MB in the beginning and 16.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 52.40 ms. Allocated memory was 43.5 MB in the beginning and 45.1 MB in the end (delta: 1.6 MB). Free memory was 16.0 MB in the beginning and 25.5 MB in the end (delta: -9.5 MB). Peak memory consumption was 4.8 MB. Max. memory is 14.3 GB. * RCFGBuilder took 12856.20 ms. Allocated memory was 45.1 MB in the beginning and 45.6 MB in the end (delta: 524.3 kB). Free memory was 25.5 MB in the beginning and 13.5 MB in the end (delta: 12.0 MB). Peak memory consumption was 16.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 8805.64 ms. Allocated memory was 45.6 MB in the beginning and 51.4 MB in the end (delta: 5.8 MB). Free memory was 12.9 MB in the beginning and 22.1 MB in the end (delta: -9.2 MB). Peak memory consumption was 8.1 MB. Max. memory is 14.3 GB. * Witness Printer took 138.97 ms. Allocated memory is still 51.4 MB. Free memory was 22.1 MB in the beginning and 15.5 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 113]: Loop Invariant [2020-10-20 00:38:44,327 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,327 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,328 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,328 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,328 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-10-20 00:38:44,328 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-10-20 00:38:44,328 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,328 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,328 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,329 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:38:44,329 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:38:44,332 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,335 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,335 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,336 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,336 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-10-20 00:38:44,336 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-10-20 00:38:44,336 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,337 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,337 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,337 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:38:44,339 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: (((((unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists v_prenex_4 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_4, 0bv32)))) && (\exists ULTIMATE.start___ieee754_logf_~x : C_FLOAT :: ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.sub~FLOAT(~roundNearestTiesToEven, ULTIMATE.start___ieee754_logf_~x, ULTIMATE.start___ieee754_logf_~x), ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE())) == \result)) && 1bv32 == \result) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) == zero_log) && (\exists v_prenex_4 : FloatRoundingMode :: ~fp.lt~FLOAT(~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]), ~to_fp~LONGDOUBLE(v_prenex_4, 0bv32)))) && (\exists v_prenex_4 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_4, 0bv32))) - InvariantResult [Line: 116]: Loop Invariant [2020-10-20 00:38:44,340 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,340 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,341 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:38:44,341 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:38:44,342 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,342 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,343 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:38:44,343 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((aux-x < 0 && isfinite_float(x)-aux && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && (\exists v_prenex_4 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_4, 0bv32)))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) == zero_log - InvariantResult [Line: 34]: Loop Invariant [2020-10-20 00:38:44,345 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,345 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,345 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,346 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,346 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-10-20 00:38:44,346 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-10-20 00:38:44,346 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,346 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,346 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,346 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:38:44,347 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:38:44,348 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,348 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,349 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,349 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,349 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-10-20 00:38:44,362 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-10-20 00:38:44,363 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,363 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,363 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,363 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:38:44,364 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((((unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists v_prenex_4 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_4, 0bv32)))) && (\exists ULTIMATE.start___ieee754_logf_~x : C_FLOAT :: ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.sub~FLOAT(~roundNearestTiesToEven, ULTIMATE.start___ieee754_logf_~x, ULTIMATE.start___ieee754_logf_~x), ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE())) == \result)) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) == zero_log) && (\exists v_prenex_4 : FloatRoundingMode :: ~fp.lt~FLOAT(~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]), ~to_fp~LONGDOUBLE(v_prenex_4, 0bv32)))) && (\exists v_prenex_4 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_4, 0bv32))) - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 127]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 118]: Loop Invariant [2020-10-20 00:38:44,364 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,365 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,365 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:38:44,365 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:38:44,365 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,365 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,366 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:38:44,366 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((aux-x < 0 && isfinite_float(x)-aux && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && (\exists v_prenex_4 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_4, 0bv32)))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) == zero_log - InvariantResult [Line: 38]: Loop Invariant [2020-10-20 00:38:44,366 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,366 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,366 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,367 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:38:44,367 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:38:44,367 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:38:44,367 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,367 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_4,QUANTIFIED] [2020-10-20 00:38:44,368 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:38:44,368 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists v_prenex_4 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_4, 0bv32)))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) == zero_log) && (\exists v_prenex_4 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_4, 0bv32))) - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 116 SDtfs, 35 SDslu, 115 SDs, 0 SdLazy, 35 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 8 LocationsWithAnnotation, 8 PreInvPairs, 14 NumberOfFragments, 149 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 104 ConstructedInterpolants, 30 QuantifiedInterpolants, 9688 SizeOfPredicates, 17 NumberOfNonLiveVariables, 265 ConjunctsInSsa, 20 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...