./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_1010.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_1010.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 f841b6aef5f414fec53f63b7daa049c759482c9a ................................................................................................................................................................................................................................................................................... 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_1010.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 f841b6aef5f414fec53f63b7daa049c759482c9a .......................................................................................................................................................................................................................................................................................................................................................... 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 00:39:06,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:39:06,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:39:06,230 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:39:06,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:39:06,232 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:39:06,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:39:06,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:39:06,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:39:06,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:39:06,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:39:06,250 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:39:06,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:39:06,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:39:06,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:39:06,256 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:39:06,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:39:06,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:39:06,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:39:06,269 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:39:06,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:39:06,275 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:39:06,278 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:39:06,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:39:06,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:39:06,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:39:06,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:39:06,287 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:39:06,288 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:39:06,289 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:39:06,290 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:39:06,290 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:39:06,291 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:39:06,292 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:39:06,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:39:06,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:39:06,295 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:39:06,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:39:06,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:39:06,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:39:06,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:39:06,309 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:39:06,343 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:39:06,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:39:06,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:39:06,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:39:06,346 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:39:06,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:39:06,346 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:39:06,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:39:06,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:39:06,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:39:06,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:39:06,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:39:06,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:39:06,348 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:39:06,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:39:06,348 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:39:06,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:39:06,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:39:06,349 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:39:06,350 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:39:06,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:39:06,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:39:06,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:39:06,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:39:06,351 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:39:06,351 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:39:06,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:39:06,352 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:39:06,352 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:39:06,352 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 -> f841b6aef5f414fec53f63b7daa049c759482c9a [2020-10-20 00:39:06,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:39:06,574 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:39:06,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:39:06,580 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:39:06,580 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:39:06,581 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1010.c [2020-10-20 00:39:06,664 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5838bd250/109f56c31e2a4fa59fa63e7160a89be7/FLAG47c010b8d [2020-10-20 00:39:07,128 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:39:07,129 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1010.c [2020-10-20 00:39:07,137 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5838bd250/109f56c31e2a4fa59fa63e7160a89be7/FLAG47c010b8d [2020-10-20 00:39:07,472 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5838bd250/109f56c31e2a4fa59fa63e7160a89be7 [2020-10-20 00:39:07,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:39:07,482 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:39:07,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:39:07,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:39:07,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:39:07,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:39:07" (1/1) ... [2020-10-20 00:39:07,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e7c6c43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:07, skipping insertion in model container [2020-10-20 00:39:07,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:39:07" (1/1) ... [2020-10-20 00:39:07,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:39:07,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:39:07,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:39:07,785 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:39:07,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:39:07,825 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:39:07,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:07 WrapperNode [2020-10-20 00:39:07,826 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:39:07,827 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:39:07,827 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:39:07,827 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:39:07,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:07" (1/1) ... [2020-10-20 00:39:07,845 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:07" (1/1) ... [2020-10-20 00:39:07,866 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:39:07,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:39:07,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:39:07,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:39:07,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:07" (1/1) ... [2020-10-20 00:39:07,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:07" (1/1) ... [2020-10-20 00:39:07,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:07" (1/1) ... [2020-10-20 00:39:07,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:07" (1/1) ... [2020-10-20 00:39:07,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:07" (1/1) ... [2020-10-20 00:39:07,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:07" (1/1) ... [2020-10-20 00:39:07,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:07" (1/1) ... [2020-10-20 00:39:07,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:39:07,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:39:07,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:39:07,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:39:07,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:07" (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 00:39:07,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:39:07,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:39:07,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-20 00:39:07,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:39:07,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-20 00:39:07,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:39:07,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:39:07,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:39:07,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:39:08,227 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:39:08,227 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-20 00:39:08,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:39:08 BoogieIcfgContainer [2020-10-20 00:39:08,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:39:08,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:39:08,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:39:08,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:39:08,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:39:07" (1/3) ... [2020-10-20 00:39:08,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@116dd7bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:39:08, skipping insertion in model container [2020-10-20 00:39:08,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:07" (2/3) ... [2020-10-20 00:39:08,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@116dd7bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:39:08, skipping insertion in model container [2020-10-20 00:39:08,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:39:08" (3/3) ... [2020-10-20 00:39:08,238 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1010.c [2020-10-20 00:39:08,259 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:39:08,269 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:39:08,285 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:39:08,317 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:39:08,318 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:39:08,318 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:39:08,318 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:39:08,318 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:39:08,318 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:39:08,319 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:39:08,319 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:39:08,339 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-10-20 00:39:08,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 00:39:08,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:39:08,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:39:08,347 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:39:08,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:39:08,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1641238961, now seen corresponding path program 1 times [2020-10-20 00:39:08,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:39:08,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297568674] [2020-10-20 00:39:08,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:39:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:39:08,534 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 00:39:08,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297568674] [2020-10-20 00:39:08,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:39:08,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:39:08,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403948972] [2020-10-20 00:39:08,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:39:08,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:39:08,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:39:08,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:39:08,557 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2020-10-20 00:39:08,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:39:08,574 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2020-10-20 00:39:08,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:39:08,576 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-20 00:39:08,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:39:08,586 INFO L225 Difference]: With dead ends: 29 [2020-10-20 00:39:08,586 INFO L226 Difference]: Without dead ends: 12 [2020-10-20 00:39:08,589 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 00:39:08,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-10-20 00:39:08,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-10-20 00:39:08,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-20 00:39:08,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2020-10-20 00:39:08,619 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 9 [2020-10-20 00:39:08,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:39:08,620 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2020-10-20 00:39:08,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:39:08,620 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-10-20 00:39:08,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:39:08,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:39:08,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:39:08,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:39:08,622 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:39:08,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:39:08,622 INFO L82 PathProgramCache]: Analyzing trace with hash 558246130, now seen corresponding path program 1 times [2020-10-20 00:39:08,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:39:08,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782327688] [2020-10-20 00:39:08,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:39:08,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:39:08,678 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:39:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:39:08,715 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:39:08,742 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:39:08,743 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:39:08,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:39:08,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:39:08 BoogieIcfgContainer [2020-10-20 00:39:08,789 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:39:08,789 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:39:08,789 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:39:08,789 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:39:08,790 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:39:08" (3/4) ... [2020-10-20 00:39:08,793 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:39:08,794 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:39:08,796 INFO L168 Benchmark]: Toolchain (without parser) took 1318.60 ms. Allocated memory was 35.1 MB in the beginning and 46.1 MB in the end (delta: 11.0 MB). Free memory was 12.4 MB in the beginning and 26.6 MB in the end (delta: -14.2 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:39:08,797 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 33.6 MB. Free memory was 18.6 MB in the beginning and 18.5 MB in the end (delta: 27.0 kB). Peak memory consumption was 27.0 kB. Max. memory is 14.3 GB. [2020-10-20 00:39:08,798 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.97 ms. Allocated memory was 35.1 MB in the beginning and 43.5 MB in the end (delta: 8.4 MB). Free memory was 11.5 MB in the beginning and 26.5 MB in the end (delta: -15.0 MB). Peak memory consumption was 8.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:39:08,799 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.91 ms. Allocated memory is still 43.5 MB. Free memory was 26.5 MB in the beginning and 24.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:39:08,800 INFO L168 Benchmark]: Boogie Preprocessor took 32.03 ms. Allocated memory is still 43.5 MB. Free memory was 24.7 MB in the beginning and 23.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:39:08,800 INFO L168 Benchmark]: RCFGBuilder took 329.92 ms. Allocated memory is still 43.5 MB. Free memory was 23.1 MB in the beginning and 19.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 10.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:39:08,802 INFO L168 Benchmark]: TraceAbstraction took 558.31 ms. Allocated memory was 43.5 MB in the beginning and 46.1 MB in the end (delta: 2.6 MB). Free memory was 18.7 MB in the beginning and 26.9 MB in the end (delta: -8.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:39:08,802 INFO L168 Benchmark]: Witness Printer took 4.76 ms. Allocated memory is still 46.1 MB. Free memory was 26.9 MB in the beginning and 26.6 MB in the end (delta: 325.7 kB). Peak memory consumption was 325.7 kB. Max. memory is 14.3 GB. [2020-10-20 00:39:08,808 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 33.6 MB. Free memory was 18.6 MB in the beginning and 18.5 MB in the end (delta: 27.0 kB). Peak memory consumption was 27.0 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 342.97 ms. Allocated memory was 35.1 MB in the beginning and 43.5 MB in the end (delta: 8.4 MB). Free memory was 11.5 MB in the beginning and 26.5 MB in the end (delta: -15.0 MB). Peak memory consumption was 8.5 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 39.91 ms. Allocated memory is still 43.5 MB. Free memory was 26.5 MB in the beginning and 24.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 32.03 ms. Allocated memory is still 43.5 MB. Free memory was 24.7 MB in the beginning and 23.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * RCFGBuilder took 329.92 ms. Allocated memory is still 43.5 MB. Free memory was 23.1 MB in the beginning and 19.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 10.9 MB. Max. memory is 14.3 GB. * TraceAbstraction took 558.31 ms. Allocated memory was 43.5 MB in the beginning and 46.1 MB in the end (delta: 2.6 MB). Free memory was 18.7 MB in the beginning and 26.9 MB in the end (delta: -8.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 14.3 GB. * Witness Printer took 4.76 ms. Allocated memory is still 46.1 MB. Free memory was 26.9 MB in the beginning and 26.6 MB in the end (delta: 325.7 kB). Peak memory consumption was 325.7 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 14, overapproximation of someBinaryArithmeticFLOAToperation at line 37, overapproximation of bitwiseAnd at line 25. Possible FailurePath: [L37] float x = 0.0f / 0.0f; [L17] __uint32_t ix; [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (ix) = gf_u.word [L24] ieee_float_shape_type sf_u; [L25] sf_u.word = (ix & 0x7fffffff) [L26] EXPR sf_u.value [L26] (x) = sf_u.value [L28] return x; [L38] float res = fabs_float(x); [L14] return x != x; [L41] COND TRUE !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_1010.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:39:11,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:39:11,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:39:11,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:39:11,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:39:11,219 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:39:11,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:39:11,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:39:11,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:39:11,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:39:11,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:39:11,234 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:39:11,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:39:11,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:39:11,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:39:11,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:39:11,250 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:39:11,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:39:11,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:39:11,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:39:11,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:39:11,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:39:11,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:39:11,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:39:11,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:39:11,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:39:11,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:39:11,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:39:11,262 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:39:11,263 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:39:11,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:39:11,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:39:11,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:39:11,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:39:11,266 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:39:11,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:39:11,267 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:39:11,267 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:39:11,267 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:39:11,268 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:39:11,269 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:39:11,269 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:39:11,294 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:39:11,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:39:11,295 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:39:11,296 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:39:11,296 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:39:11,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:39:11,296 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:39:11,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:39:11,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:39:11,297 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:39:11,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:39:11,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:39:11,297 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:39:11,298 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:39:11,298 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:39:11,298 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:39:11,298 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:39:11,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:39:11,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:39:11,299 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:39:11,299 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:39:11,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:39:11,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:39:11,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:39:11,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:39:11,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:39:11,300 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:39:11,300 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:39:11,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:39:11,301 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:39:11,301 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:39:11,301 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 -> f841b6aef5f414fec53f63b7daa049c759482c9a [2020-10-20 00:39:11,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:39:11,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:39:11,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:39:11,521 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:39:11,521 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:39:11,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1010.c [2020-10-20 00:39:11,590 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de73a718f/edfa69079f304d449eb4ac3fbebf5eeb/FLAG894b93dd2 [2020-10-20 00:39:12,145 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:39:12,146 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1010.c [2020-10-20 00:39:12,158 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de73a718f/edfa69079f304d449eb4ac3fbebf5eeb/FLAG894b93dd2 [2020-10-20 00:39:12,512 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de73a718f/edfa69079f304d449eb4ac3fbebf5eeb [2020-10-20 00:39:12,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:39:12,523 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:39:12,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:39:12,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:39:12,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:39:12,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:39:12" (1/1) ... [2020-10-20 00:39:12,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4875c5fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:12, skipping insertion in model container [2020-10-20 00:39:12,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:39:12" (1/1) ... [2020-10-20 00:39:12,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:39:12,561 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:39:12,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:39:12,793 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:39:12,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:39:12,839 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:39:12,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:12 WrapperNode [2020-10-20 00:39:12,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:39:12,843 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:39:12,843 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:39:12,843 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:39:12,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:12" (1/1) ... [2020-10-20 00:39:12,864 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:12" (1/1) ... [2020-10-20 00:39:12,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:39:12,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:39:12,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:39:12,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:39:12,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:12" (1/1) ... [2020-10-20 00:39:12,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:12" (1/1) ... [2020-10-20 00:39:12,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:12" (1/1) ... [2020-10-20 00:39:12,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:12" (1/1) ... [2020-10-20 00:39:12,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:12" (1/1) ... [2020-10-20 00:39:12,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:12" (1/1) ... [2020-10-20 00:39:12,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:12" (1/1) ... [2020-10-20 00:39:12,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:39:12,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:39:12,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:39:12,926 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:39:12,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:12" (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 00:39:13,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:39:13,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:39:13,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-10-20 00:39:13,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 00:39:13,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:39:13,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:39:13,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-10-20 00:39:13,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 00:39:13,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:39:13,290 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:39:13,291 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-20 00:39:13,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:39:13 BoogieIcfgContainer [2020-10-20 00:39:13,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:39:13,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:39:13,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:39:13,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:39:13,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:39:12" (1/3) ... [2020-10-20 00:39:13,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36245b6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:39:13, skipping insertion in model container [2020-10-20 00:39:13,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:12" (2/3) ... [2020-10-20 00:39:13,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36245b6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:39:13, skipping insertion in model container [2020-10-20 00:39:13,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:39:13" (3/3) ... [2020-10-20 00:39:13,305 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1010.c [2020-10-20 00:39:13,327 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:39:13,359 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:39:13,401 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:39:13,429 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:39:13,430 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:39:13,430 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:39:13,430 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:39:13,431 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:39:13,431 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:39:13,431 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:39:13,432 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:39:13,444 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-10-20 00:39:13,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 00:39:13,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:39:13,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:39:13,452 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:39:13,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:39:13,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1641238961, now seen corresponding path program 1 times [2020-10-20 00:39:13,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:39:13,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1561094349] [2020-10-20 00:39:13,470 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 00:39:13,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:39:13,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:39:13,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:39:13,617 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 00:39:13,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:39:13,622 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 00:39:13,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1561094349] [2020-10-20 00:39:13,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:39:13,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:39:13,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635431681] [2020-10-20 00:39:13,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:39:13,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:39:13,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:39:13,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:39:13,649 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2020-10-20 00:39:13,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:39:13,680 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2020-10-20 00:39:13,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:39:13,682 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-20 00:39:13,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:39:13,694 INFO L225 Difference]: With dead ends: 29 [2020-10-20 00:39:13,694 INFO L226 Difference]: Without dead ends: 12 [2020-10-20 00:39:13,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 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 00:39:13,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-10-20 00:39:13,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-10-20 00:39:13,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-20 00:39:13,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2020-10-20 00:39:13,730 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 9 [2020-10-20 00:39:13,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:39:13,731 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2020-10-20 00:39:13,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:39:13,731 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-10-20 00:39:13,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:39:13,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:39:13,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:39:13,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:39:13,947 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:39:13,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:39:13,948 INFO L82 PathProgramCache]: Analyzing trace with hash 558246130, now seen corresponding path program 1 times [2020-10-20 00:39:13,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:39:13,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1131020365] [2020-10-20 00:39:13,950 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 00:39:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:39:14,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-20 00:39:14,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:39:14,247 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 00:39:14,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:39:14,417 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 00:39:14,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1131020365] [2020-10-20 00:39:14,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:39:14,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2020-10-20 00:39:14,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640904416] [2020-10-20 00:39:14,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-20 00:39:14,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:39:14,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-20 00:39:14,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-20 00:39:14,422 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand 12 states. [2020-10-20 00:39:14,969 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 24 [2020-10-20 00:39:14,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:39:14,974 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2020-10-20 00:39:14,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 00:39:14,975 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 11 [2020-10-20 00:39:14,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:39:14,976 INFO L225 Difference]: With dead ends: 12 [2020-10-20 00:39:14,976 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 00:39:14,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-20 00:39:14,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 00:39:14,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 00:39:14,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 00:39:14,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 00:39:14,983 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-10-20 00:39:14,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:39:14,984 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 00:39:14,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-20 00:39:14,985 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 00:39:14,986 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 00:39:15,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:39:15,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 00:39:15,294 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 00:39:15,295 INFO L274 CegarLoopResult]: For program point L23(lines 23 27) no Hoare annotation was computed. [2020-10-20 00:39:15,295 INFO L274 CegarLoopResult]: For program point L23-1(lines 16 29) no Hoare annotation was computed. [2020-10-20 00:39:15,295 INFO L274 CegarLoopResult]: For program point L23-2(lines 23 27) no Hoare annotation was computed. [2020-10-20 00:39:15,295 INFO L277 CegarLoopResult]: At program point L46(lines 31 47) the Hoare annotation is: true [2020-10-20 00:39:15,296 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-20 00:39:15,296 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-10-20 00:39:15,296 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 00:39:15,296 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 00:39:15,296 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 00:39:15,297 INFO L270 CegarLoopResult]: At program point L28(lines 16 29) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_fabs_float_~x)) (not (let ((.cse0 (let ((.cse1 (bvand (_ bv2147483647 32) ULTIMATE.start_fabs_float_~ix~0))) (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1))))) (fp.eq .cse0 .cse0))) (not (fp.eq |ULTIMATE.start_fabs_float_#res| |ULTIMATE.start_fabs_float_#res|))) [2020-10-20 00:39:15,297 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-20 00:39:15,297 INFO L274 CegarLoopResult]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2020-10-20 00:39:15,297 INFO L270 CegarLoopResult]: At program point L18-2(lines 18 22) the Hoare annotation is: (not (fp.eq ULTIMATE.start_fabs_float_~x ULTIMATE.start_fabs_float_~x)) [2020-10-20 00:39:15,298 INFO L270 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_fabs_float_~x)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (let ((.cse0 (let ((.cse1 (bvand (_ bv2147483647 32) ULTIMATE.start_fabs_float_~ix~0))) (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1))))) (fp.eq .cse0 .cse0))) (not (fp.eq |ULTIMATE.start_fabs_float_#res| |ULTIMATE.start_fabs_float_#res|))) [2020-10-20 00:39:15,298 INFO L274 CegarLoopResult]: For program point L41(lines 41 44) no Hoare annotation was computed. [2020-10-20 00:39:15,314 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-10-20 00:39:15,317 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-10-20 00:39:15,320 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-10-20 00:39:15,321 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-10-20 00:39:15,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:39:15 BoogieIcfgContainer [2020-10-20 00:39:15,328 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:39:15,329 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:39:15,329 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:39:15,329 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:39:15,330 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:39:13" (3/4) ... [2020-10-20 00:39:15,335 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 00:39:15,351 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-10-20 00:39:15,352 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 00:39:15,352 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-20 00:39:15,352 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 00:39:15,412 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:39:15,413 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:39:15,418 INFO L168 Benchmark]: Toolchain (without parser) took 2896.86 ms. Allocated memory was 40.4 MB in the beginning and 46.1 MB in the end (delta: 5.8 MB). Free memory was 18.2 MB in the beginning and 20.8 MB in the end (delta: -2.6 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:39:15,423 INFO L168 Benchmark]: CDTParser took 5.84 ms. Allocated memory is still 30.9 MB. Free memory was 6.0 MB in the beginning and 17.2 MB in the end (delta: -11.1 MB). Peak memory consumption was 848.3 kB. Max. memory is 14.3 GB. [2020-10-20 00:39:15,424 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.34 ms. Allocated memory was 40.4 MB in the beginning and 41.4 MB in the end (delta: 1.0 MB). Free memory was 17.3 MB in the beginning and 16.8 MB in the end (delta: 495.2 kB). Peak memory consumption was 7.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:39:15,425 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.81 ms. Allocated memory is still 41.4 MB. Free memory was 16.6 MB in the beginning and 14.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:39:15,426 INFO L168 Benchmark]: Boogie Preprocessor took 35.92 ms. Allocated memory is still 41.4 MB. Free memory was 14.9 MB in the beginning and 13.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:39:15,426 INFO L168 Benchmark]: RCFGBuilder took 368.25 ms. Allocated memory was 41.4 MB in the beginning and 43.0 MB in the end (delta: 1.6 MB). Free memory was 13.2 MB in the beginning and 13.5 MB in the end (delta: -226.8 kB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:39:15,429 INFO L168 Benchmark]: TraceAbstraction took 2032.15 ms. Allocated memory was 43.0 MB in the beginning and 46.1 MB in the end (delta: 3.1 MB). Free memory was 12.8 MB in the beginning and 23.6 MB in the end (delta: -10.8 MB). Peak memory consumption was 4.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:39:15,435 INFO L168 Benchmark]: Witness Printer took 84.18 ms. Allocated memory is still 46.1 MB. Free memory was 23.6 MB in the beginning and 21.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:39:15,444 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 5.84 ms. Allocated memory is still 30.9 MB. Free memory was 6.0 MB in the beginning and 17.2 MB in the end (delta: -11.1 MB). Peak memory consumption was 848.3 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 317.34 ms. Allocated memory was 40.4 MB in the beginning and 41.4 MB in the end (delta: 1.0 MB). Free memory was 17.3 MB in the beginning and 16.8 MB in the end (delta: 495.2 kB). Peak memory consumption was 7.8 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 46.81 ms. Allocated memory is still 41.4 MB. Free memory was 16.6 MB in the beginning and 14.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 35.92 ms. Allocated memory is still 41.4 MB. Free memory was 14.9 MB in the beginning and 13.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 368.25 ms. Allocated memory was 41.4 MB in the beginning and 43.0 MB in the end (delta: 1.6 MB). Free memory was 13.2 MB in the beginning and 13.5 MB in the end (delta: -226.8 kB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2032.15 ms. Allocated memory was 43.0 MB in the beginning and 46.1 MB in the end (delta: 3.1 MB). Free memory was 12.8 MB in the beginning and 23.6 MB in the end (delta: -10.8 MB). Peak memory consumption was 4.3 MB. Max. memory is 14.3 GB. * Witness Printer took 84.18 ms. Allocated memory is still 46.1 MB. Free memory was 23.6 MB in the beginning and 21.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * 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: 18]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 16]: Loop Invariant [2020-10-20 00:39:15,456 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-10-20 00:39:15,457 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(~bvand32(2147483647bv32, ix)[31:31], ~bvand32(2147483647bv32, ix)[30:23], ~bvand32(2147483647bv32, ix)[22:0]), ~fp~LONGDOUBLE(~bvand32(2147483647bv32, ix)[31:31], ~bvand32(2147483647bv32, ix)[30:23], ~bvand32(2147483647bv32, ix)[22:0]))) && !~fp.eq~FLOAT(\result, \result) - InvariantResult [Line: 14]: Loop Invariant [2020-10-20 00:39:15,463 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-10-20 00:39:15,463 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && 1bv32 == \result) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(~bvand32(2147483647bv32, ix)[31:31], ~bvand32(2147483647bv32, ix)[30:23], ~bvand32(2147483647bv32, ix)[22:0]), ~fp~LONGDOUBLE(~bvand32(2147483647bv32, ix)[31:31], ~bvand32(2147483647bv32, ix)[30:23], ~bvand32(2147483647bv32, ix)[22:0]))) && !~fp.eq~FLOAT(\result, \result) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 12 SDslu, 16 SDs, 0 SdLazy, 20 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 88 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 36 ConstructedInterpolants, 6 QuantifiedInterpolants, 1568 SizeOfPredicates, 13 NumberOfNonLiveVariables, 87 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...