./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_1011a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 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_1.5.800.v20200727-1323.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_1011a.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 955f5e50325f07eb13f5ec8c2df35bf16a648c2d ........................................................................................................................................................................................................................................................................................ 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_1.5.800.v20200727-1323.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_1011a.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 955f5e50325f07eb13f5ec8c2df35bf16a648c2d ................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 22:00:01,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 22:00:01,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 22:00:01,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 22:00:01,582 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 22:00:01,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 22:00:01,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 22:00:01,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 22:00:01,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 22:00:01,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 22:00:01,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 22:00:01,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 22:00:01,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 22:00:01,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 22:00:01,617 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 22:00:01,619 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 22:00:01,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 22:00:01,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 22:00:01,631 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 22:00:01,635 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 22:00:01,638 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 22:00:01,640 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 22:00:01,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 22:00:01,643 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 22:00:01,650 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 22:00:01,650 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 22:00:01,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 22:00:01,652 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 22:00:01,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 22:00:01,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 22:00:01,654 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 22:00:01,655 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 22:00:01,657 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 22:00:01,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 22:00:01,659 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 22:00:01,660 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 22:00:01,660 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 22:00:01,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 22:00:01,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 22:00:01,663 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 22:00:01,664 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 22:00:01,665 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 22:00:01,712 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 22:00:01,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 22:00:01,714 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 22:00:01,714 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 22:00:01,715 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 22:00:01,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 22:00:01,715 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 22:00:01,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 22:00:01,716 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 22:00:01,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 22:00:01,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 22:00:01,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 22:00:01,717 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 22:00:01,717 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 22:00:01,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 22:00:01,718 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 22:00:01,718 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 22:00:01,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 22:00:01,719 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 22:00:01,719 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 22:00:01,719 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 22:00:01,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:00:01,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 22:00:01,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 22:00:01,721 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 22:00:01,721 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 22:00:01,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 22:00:01,721 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 22:00:01,722 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 22:00:01,722 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 955f5e50325f07eb13f5ec8c2df35bf16a648c2d [2020-10-25 22:00:02,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 22:00:02,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 22:00:02,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 22:00:02,136 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 22:00:02,138 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 22:00:02,139 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1011a.c [2020-10-25 22:00:02,224 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e7dddd9a/ed78f14f527f429b86e942df15188d02/FLAG4e693d28d [2020-10-25 22:00:02,797 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 22:00:02,798 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1011a.c [2020-10-25 22:00:02,806 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e7dddd9a/ed78f14f527f429b86e942df15188d02/FLAG4e693d28d [2020-10-25 22:00:03,161 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e7dddd9a/ed78f14f527f429b86e942df15188d02 [2020-10-25 22:00:03,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 22:00:03,171 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 22:00:03,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 22:00:03,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 22:00:03,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 22:00:03,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:00:03" (1/1) ... [2020-10-25 22:00:03,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57967de0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:03, skipping insertion in model container [2020-10-25 22:00:03,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:00:03" (1/1) ... [2020-10-25 22:00:03,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 22:00:03,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 22:00:03,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:00:03,417 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 22:00:03,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:00:03,457 INFO L208 MainTranslator]: Completed translation [2020-10-25 22:00:03,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:03 WrapperNode [2020-10-25 22:00:03,458 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 22:00:03,460 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 22:00:03,460 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 22:00:03,460 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 22:00:03,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:03" (1/1) ... [2020-10-25 22:00:03,478 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:03" (1/1) ... [2020-10-25 22:00:03,499 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 22:00:03,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 22:00:03,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 22:00:03,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 22:00:03,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:03" (1/1) ... [2020-10-25 22:00:03,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:03" (1/1) ... [2020-10-25 22:00:03,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:03" (1/1) ... [2020-10-25 22:00:03,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:03" (1/1) ... [2020-10-25 22:00:03,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:03" (1/1) ... [2020-10-25 22:00:03,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:03" (1/1) ... [2020-10-25 22:00:03,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:03" (1/1) ... [2020-10-25 22:00:03,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 22:00:03,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 22:00:03,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 22:00:03,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 22:00:03,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:03" (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 [2020-10-25 22:00:03,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 22:00:03,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 22:00:03,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-25 22:00:03,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 22:00:03,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-25 22:00:03,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 22:00:03,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 22:00:03,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 22:00:03,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 22:00:04,011 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 22:00:04,012 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-25 22:00:04,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:00:04 BoogieIcfgContainer [2020-10-25 22:00:04,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 22:00:04,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 22:00:04,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 22:00:04,019 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 22:00:04,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 10:00:03" (1/3) ... [2020-10-25 22:00:04,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ac4e107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:00:04, skipping insertion in model container [2020-10-25 22:00:04,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:03" (2/3) ... [2020-10-25 22:00:04,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ac4e107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:00:04, skipping insertion in model container [2020-10-25 22:00:04,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:00:04" (3/3) ... [2020-10-25 22:00:04,024 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1011a.c [2020-10-25 22:00:04,040 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 22:00:04,045 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 22:00:04,058 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 22:00:04,104 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 22:00:04,104 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 22:00:04,105 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 22:00:04,105 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 22:00:04,106 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 22:00:04,106 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 22:00:04,106 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 22:00:04,106 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 22:00:04,122 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-10-25 22:00:04,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-25 22:00:04,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:00:04,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:00:04,129 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:00:04,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:00:04,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1641221055, now seen corresponding path program 1 times [2020-10-25 22:00:04,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:00:04,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953611308] [2020-10-25 22:00:04,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:00:04,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:00:04,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:00:04,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953611308] [2020-10-25 22:00:04,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:00:04,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 22:00:04,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954503300] [2020-10-25 22:00:04,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 22:00:04,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:00:04,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 22:00:04,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 22:00:04,367 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-10-25 22:00:04,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:00:04,388 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2020-10-25 22:00:04,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 22:00:04,390 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-25 22:00:04,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:00:04,409 INFO L225 Difference]: With dead ends: 37 [2020-10-25 22:00:04,413 INFO L226 Difference]: Without dead ends: 16 [2020-10-25 22:00:04,417 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 [2020-10-25 22:00:04,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-25 22:00:04,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-25 22:00:04,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-25 22:00:04,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-10-25 22:00:04,455 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 9 [2020-10-25 22:00:04,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:00:04,456 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-25 22:00:04,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 22:00:04,456 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-10-25 22:00:04,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-25 22:00:04,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:00:04,458 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:00:04,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 22:00:04,458 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:00:04,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:00:04,462 INFO L82 PathProgramCache]: Analyzing trace with hash 558264036, now seen corresponding path program 1 times [2020-10-25 22:00:04,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:00:04,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044892354] [2020-10-25 22:00:04,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:00:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:00:04,545 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:00:04,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:00:04,599 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:00:04,623 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 22:00:04,624 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 22:00:04,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 22:00:04,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 10:00:04 BoogieIcfgContainer [2020-10-25 22:00:04,655 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 22:00:04,655 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 22:00:04,655 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 22:00:04,656 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 22:00:04,657 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:00:04" (3/4) ... [2020-10-25 22:00:04,660 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-25 22:00:04,661 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 22:00:04,664 INFO L168 Benchmark]: Toolchain (without parser) took 1496.36 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 21.2 MB in the beginning and 32.3 MB in the end (delta: -11.0 MB). Peak memory consumption was 1.3 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:04,665 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 44.0 MB. Free memory was 28.6 MB in the beginning and 28.5 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:00:04,666 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.20 ms. Allocated memory is still 44.0 MB. Free memory was 20.6 MB in the beginning and 22.0 MB in the end (delta: -1.4 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:04,667 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.13 ms. Allocated memory is still 44.0 MB. Free memory was 21.9 MB in the beginning and 20.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:04,667 INFO L168 Benchmark]: Boogie Preprocessor took 28.75 ms. Allocated memory is still 44.0 MB. Free memory was 20.3 MB in the beginning and 19.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:00:04,668 INFO L168 Benchmark]: RCFGBuilder took 478.38 ms. Allocated memory is still 54.5 MB. Free memory was 39.3 MB in the beginning and 37.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:04,669 INFO L168 Benchmark]: TraceAbstraction took 638.92 ms. Allocated memory is still 54.5 MB. Free memory was 37.7 MB in the beginning and 32.8 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:04,670 INFO L168 Benchmark]: Witness Printer took 5.62 ms. Allocated memory is still 54.5 MB. Free memory was 32.8 MB in the beginning and 32.3 MB in the end (delta: 504.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:00:04,675 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 44.0 MB. Free memory was 28.6 MB in the beginning and 28.5 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 285.20 ms. Allocated memory is still 44.0 MB. Free memory was 20.6 MB in the beginning and 22.0 MB in the end (delta: -1.4 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.13 ms. Allocated memory is still 44.0 MB. Free memory was 21.9 MB in the beginning and 20.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.75 ms. Allocated memory is still 44.0 MB. Free memory was 20.3 MB in the beginning and 19.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 478.38 ms. Allocated memory is still 54.5 MB. Free memory was 39.3 MB in the beginning and 37.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 638.92 ms. Allocated memory is still 54.5 MB. Free memory was 37.7 MB in the beginning and 32.8 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.62 ms. Allocated memory is still 54.5 MB. Free memory was 32.8 MB in the beginning and 32.3 MB in the end (delta: 504.8 kB). There was no memory consumed. Max. memory is 16.1 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 51, overapproximation of bitwiseAnd at line 23. Possible FailurePath: [L47] float x = 0.0f; [L15] __uint32_t ix; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (ix) = gf_u.word [L22] ieee_float_shape_type sf_u; [L23] sf_u.word = (ix & 0x7fffffff) [L24] EXPR sf_u.value [L24] (x) = sf_u.value [L26] return x; [L48] float res = fabs_float(x); [L51] EXPR res == 0.0f && __signbit_float(res) == 0 [L51] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L3] __assert_fail("0", "float_req_bl_1011a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 19 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=20occurred 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 0.2.0-5485861 [2020-10-25 22:00:07,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 22:00:07,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 22:00:07,263 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 22:00:07,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 22:00:07,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 22:00:07,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 22:00:07,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 22:00:07,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 22:00:07,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 22:00:07,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 22:00:07,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 22:00:07,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 22:00:07,277 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 22:00:07,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 22:00:07,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 22:00:07,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 22:00:07,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 22:00:07,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 22:00:07,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 22:00:07,287 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 22:00:07,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 22:00:07,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 22:00:07,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 22:00:07,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 22:00:07,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 22:00:07,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 22:00:07,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 22:00:07,297 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 22:00:07,298 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 22:00:07,298 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 22:00:07,299 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 22:00:07,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 22:00:07,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 22:00:07,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 22:00:07,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 22:00:07,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 22:00:07,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 22:00:07,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 22:00:07,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 22:00:07,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 22:00:07,310 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-25 22:00:07,358 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 22:00:07,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 22:00:07,360 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 22:00:07,361 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 22:00:07,362 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 22:00:07,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 22:00:07,363 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 22:00:07,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 22:00:07,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 22:00:07,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 22:00:07,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 22:00:07,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 22:00:07,365 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-25 22:00:07,365 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-25 22:00:07,365 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 22:00:07,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 22:00:07,366 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 22:00:07,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 22:00:07,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 22:00:07,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 22:00:07,367 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 22:00:07,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 22:00:07,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:00:07,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 22:00:07,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 22:00:07,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 22:00:07,368 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-25 22:00:07,368 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-25 22:00:07,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 22:00:07,369 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 22:00:07,369 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-25 22:00:07,369 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 955f5e50325f07eb13f5ec8c2df35bf16a648c2d [2020-10-25 22:00:07,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 22:00:07,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 22:00:07,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 22:00:07,788 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 22:00:07,789 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 22:00:07,793 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1011a.c [2020-10-25 22:00:07,895 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89c607e9a/bde0f51d12fc4486af7d000acd19893f/FLAG2c9afd861 [2020-10-25 22:00:08,454 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 22:00:08,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1011a.c [2020-10-25 22:00:08,462 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89c607e9a/bde0f51d12fc4486af7d000acd19893f/FLAG2c9afd861 [2020-10-25 22:00:08,831 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89c607e9a/bde0f51d12fc4486af7d000acd19893f [2020-10-25 22:00:08,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 22:00:08,842 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 22:00:08,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 22:00:08,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 22:00:08,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 22:00:08,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:00:08" (1/1) ... [2020-10-25 22:00:08,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1719cb0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:08, skipping insertion in model container [2020-10-25 22:00:08,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:00:08" (1/1) ... [2020-10-25 22:00:08,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 22:00:08,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 22:00:09,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:00:09,097 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 22:00:09,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:00:09,143 INFO L208 MainTranslator]: Completed translation [2020-10-25 22:00:09,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:09 WrapperNode [2020-10-25 22:00:09,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 22:00:09,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 22:00:09,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 22:00:09,146 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 22:00:09,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:09" (1/1) ... [2020-10-25 22:00:09,167 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:09" (1/1) ... [2020-10-25 22:00:09,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 22:00:09,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 22:00:09,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 22:00:09,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 22:00:09,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:09" (1/1) ... [2020-10-25 22:00:09,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:09" (1/1) ... [2020-10-25 22:00:09,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:09" (1/1) ... [2020-10-25 22:00:09,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:09" (1/1) ... [2020-10-25 22:00:09,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:09" (1/1) ... [2020-10-25 22:00:09,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:09" (1/1) ... [2020-10-25 22:00:09,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:09" (1/1) ... [2020-10-25 22:00:09,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 22:00:09,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 22:00:09,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 22:00:09,271 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 22:00:09,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:09" (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 [2020-10-25 22:00:09,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-25 22:00:09,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 22:00:09,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-10-25 22:00:09,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-25 22:00:09,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 22:00:09,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 22:00:09,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-10-25 22:00:09,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-25 22:00:09,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 22:00:09,874 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 22:00:09,874 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-25 22:00:09,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:00:09 BoogieIcfgContainer [2020-10-25 22:00:09,876 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 22:00:09,878 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 22:00:09,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 22:00:09,883 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 22:00:09,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 10:00:08" (1/3) ... [2020-10-25 22:00:09,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c506e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:00:09, skipping insertion in model container [2020-10-25 22:00:09,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:09" (2/3) ... [2020-10-25 22:00:09,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c506e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:00:09, skipping insertion in model container [2020-10-25 22:00:09,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:00:09" (3/3) ... [2020-10-25 22:00:09,887 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1011a.c [2020-10-25 22:00:09,901 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 22:00:09,906 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 22:00:09,930 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 22:00:09,960 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 22:00:09,961 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 22:00:09,961 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 22:00:09,961 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 22:00:09,962 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 22:00:09,962 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 22:00:09,962 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 22:00:09,962 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 22:00:09,976 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-10-25 22:00:09,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-25 22:00:09,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:00:09,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:00:09,983 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:00:09,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:00:09,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1641221055, now seen corresponding path program 1 times [2020-10-25 22:00:10,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 22:00:10,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59321449] [2020-10-25 22:00:10,006 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 [2020-10-25 22:00:10,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:00:10,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-25 22:00:10,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:00:10,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:00:10,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 22:00:10,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:00:10,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59321449] [2020-10-25 22:00:10,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:00:10,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-25 22:00:10,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555222399] [2020-10-25 22:00:10,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 22:00:10,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 22:00:10,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 22:00:10,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 22:00:10,186 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-10-25 22:00:10,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:00:10,205 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2020-10-25 22:00:10,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 22:00:10,207 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-25 22:00:10,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:00:10,216 INFO L225 Difference]: With dead ends: 37 [2020-10-25 22:00:10,216 INFO L226 Difference]: Without dead ends: 16 [2020-10-25 22:00:10,219 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 [2020-10-25 22:00:10,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-25 22:00:10,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-25 22:00:10,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-25 22:00:10,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-10-25 22:00:10,262 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 9 [2020-10-25 22:00:10,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:00:10,262 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-25 22:00:10,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 22:00:10,263 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-10-25 22:00:10,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-25 22:00:10,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:00:10,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:00:10,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-25 22:00:10,475 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:00:10,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:00:10,478 INFO L82 PathProgramCache]: Analyzing trace with hash 558264036, now seen corresponding path program 1 times [2020-10-25 22:00:10,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 22:00:10,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641043028] [2020-10-25 22:00:10,480 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 [2020-10-25 22:00:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:00:10,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-25 22:00:10,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:00:10,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:00:10,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 22:00:10,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:00:10,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641043028] [2020-10-25 22:00:10,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:00:10,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-10-25 22:00:10,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195117975] [2020-10-25 22:00:10,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-25 22:00:10,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 22:00:10,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-25 22:00:10,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-25 22:00:10,773 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 9 states. [2020-10-25 22:00:10,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:00:10,892 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2020-10-25 22:00:10,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 22:00:10,893 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2020-10-25 22:00:10,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:00:10,894 INFO L225 Difference]: With dead ends: 19 [2020-10-25 22:00:10,894 INFO L226 Difference]: Without dead ends: 16 [2020-10-25 22:00:10,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-25 22:00:10,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-25 22:00:10,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-25 22:00:10,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-25 22:00:10,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-10-25 22:00:10,900 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 11 [2020-10-25 22:00:10,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:00:10,900 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-10-25 22:00:10,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-25 22:00:10,901 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-10-25 22:00:10,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-25 22:00:10,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:00:10,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:00:11,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-25 22:00:11,117 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:00:11,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:00:11,119 INFO L82 PathProgramCache]: Analyzing trace with hash -2014349959, now seen corresponding path program 1 times [2020-10-25 22:00:11,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 22:00:11,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1240365809] [2020-10-25 22:00:11,121 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 [2020-10-25 22:00:11,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:00:11,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-25 22:00:11,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:00:11,480 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-25 22:00:11,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:00:11,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 22:00:11,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:00:11,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1240365809] [2020-10-25 22:00:11,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:00:11,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 11] imperfect sequences [] total 17 [2020-10-25 22:00:11,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292324512] [2020-10-25 22:00:11,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-25 22:00:11,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 22:00:11,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-25 22:00:11,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-10-25 22:00:11,874 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand 17 states. [2020-10-25 22:00:12,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:00:12,181 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2020-10-25 22:00:12,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-25 22:00:12,182 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 15 [2020-10-25 22:00:12,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:00:12,182 INFO L225 Difference]: With dead ends: 16 [2020-10-25 22:00:12,182 INFO L226 Difference]: Without dead ends: 0 [2020-10-25 22:00:12,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2020-10-25 22:00:12,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-25 22:00:12,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-25 22:00:12,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-25 22:00:12,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-25 22:00:12,185 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-10-25 22:00:12,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:00:12,185 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-25 22:00:12,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-25 22:00:12,185 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-25 22:00:12,185 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-25 22:00:12,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-25 22:00:12,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-25 22:00:12,513 INFO L277 CegarLoopResult]: At program point L56(lines 41 57) the Hoare annotation is: true [2020-10-25 22:00:12,514 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-25 22:00:12,514 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-10-25 22:00:12,514 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-25 22:00:12,514 INFO L274 CegarLoopResult]: For program point L32-1(lines 32 36) no Hoare annotation was computed. [2020-10-25 22:00:12,514 INFO L270 CegarLoopResult]: At program point L32-2(lines 32 36) the Hoare annotation is: (and (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start_fabs_float_~ix~0) ((_ extract 30 23) ULTIMATE.start_fabs_float_~ix~0) ((_ extract 22 0) ULTIMATE.start_fabs_float_~ix~0))) (= (_ +zero 8 24) |ULTIMATE.start_fabs_float_#res|) (= (_ +zero 8 24) ULTIMATE.start_fabs_float_~x) (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) |ULTIMATE.start_main_#t~short15|) [2020-10-25 22:00:12,514 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-25 22:00:12,514 INFO L274 CegarLoopResult]: For program point L32-3(lines 32 36) no Hoare annotation was computed. [2020-10-25 22:00:12,515 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-25 22:00:12,515 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-25 22:00:12,515 INFO L274 CegarLoopResult]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2020-10-25 22:00:12,515 INFO L270 CegarLoopResult]: At program point L16-2(lines 16 20) the Hoare annotation is: (= (_ +zero 8 24) ULTIMATE.start_fabs_float_~x) [2020-10-25 22:00:12,515 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-25 22:00:12,515 INFO L274 CegarLoopResult]: For program point L21(lines 21 25) no Hoare annotation was computed. [2020-10-25 22:00:12,515 INFO L274 CegarLoopResult]: For program point L21-1(lines 14 27) no Hoare annotation was computed. [2020-10-25 22:00:12,515 INFO L274 CegarLoopResult]: For program point L21-2(lines 21 25) no Hoare annotation was computed. [2020-10-25 22:00:12,516 INFO L270 CegarLoopResult]: At program point L38(lines 29 39) the Hoare annotation is: (and (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start_fabs_float_~ix~0) ((_ extract 30 23) ULTIMATE.start_fabs_float_~ix~0) ((_ extract 22 0) ULTIMATE.start_fabs_float_~ix~0))) (= (_ +zero 8 24) |ULTIMATE.start_fabs_float_#res|) (= (_ +zero 8 24) ULTIMATE.start_fabs_float_~x) (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~0) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~0) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~0))) (= |ULTIMATE.start___signbit_float_#res| (_ bv0 32)) |ULTIMATE.start_main_#t~short15|) [2020-10-25 22:00:12,517 INFO L270 CegarLoopResult]: At program point L26(lines 14 27) the Hoare annotation is: (and (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start_fabs_float_~ix~0) ((_ extract 30 23) ULTIMATE.start_fabs_float_~ix~0) ((_ extract 22 0) ULTIMATE.start_fabs_float_~ix~0))) (= (_ +zero 8 24) |ULTIMATE.start_fabs_float_#res|) (= (_ +zero 8 24) ULTIMATE.start_fabs_float_~x)) [2020-10-25 22:00:12,517 INFO L274 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-10-25 22:00:12,517 INFO L274 CegarLoopResult]: For program point L51-2(lines 51 54) no Hoare annotation was computed. [2020-10-25 22:00:12,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 10:00:12 BoogieIcfgContainer [2020-10-25 22:00:12,544 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 22:00:12,545 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 22:00:12,545 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 22:00:12,546 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 22:00:12,546 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:00:09" (3/4) ... [2020-10-25 22:00:12,550 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-25 22:00:12,562 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-10-25 22:00:12,562 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-25 22:00:12,563 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-25 22:00:12,563 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 22:00:12,601 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 22:00:12,601 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 22:00:12,604 INFO L168 Benchmark]: Toolchain (without parser) took 3766.37 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 29.6 MB in the beginning and 45.0 MB in the end (delta: -15.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:00:12,605 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 41.9 MB. Free memory was 19.9 MB in the beginning and 19.9 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:00:12,606 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.05 ms. Allocated memory is still 52.4 MB. Free memory was 28.9 MB in the beginning and 29.6 MB in the end (delta: -676.8 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:12,607 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.80 ms. Allocated memory is still 52.4 MB. Free memory was 29.6 MB in the beginning and 28.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:12,608 INFO L168 Benchmark]: Boogie Preprocessor took 72.87 ms. Allocated memory is still 52.4 MB. Free memory was 28.0 MB in the beginning and 26.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:12,608 INFO L168 Benchmark]: RCFGBuilder took 606.75 ms. Allocated memory is still 52.4 MB. Free memory was 26.4 MB in the beginning and 23.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:12,609 INFO L168 Benchmark]: TraceAbstraction took 2666.41 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 23.6 MB in the beginning and 47.1 MB in the end (delta: -23.5 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:12,610 INFO L168 Benchmark]: Witness Printer took 56.30 ms. Allocated memory is still 65.0 MB. Free memory was 47.1 MB in the beginning and 45.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:12,615 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 41.9 MB. Free memory was 19.9 MB in the beginning and 19.9 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 299.05 ms. Allocated memory is still 52.4 MB. Free memory was 28.9 MB in the beginning and 29.6 MB in the end (delta: -676.8 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.80 ms. Allocated memory is still 52.4 MB. Free memory was 29.6 MB in the beginning and 28.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 72.87 ms. Allocated memory is still 52.4 MB. Free memory was 28.0 MB in the beginning and 26.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 606.75 ms. Allocated memory is still 52.4 MB. Free memory was 26.4 MB in the beginning and 23.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2666.41 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 23.6 MB in the beginning and 47.1 MB in the end (delta: -23.5 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. * Witness Printer took 56.30 ms. Allocated memory is still 65.0 MB. Free memory was 47.1 MB in the beginning and 45.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * 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: 14]: Loop Invariant Derived loop invariant: (~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: ((((((~Pluszero~LONGDOUBLE() == res && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0])) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && \result == 0bv32) && aux-res == 0.0f && __signbit_float(res) == 0-aux - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((((~Pluszero~LONGDOUBLE() == res && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0])) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == x) && aux-res == 0.0f && __signbit_float(res) == 0-aux - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 105 SDslu, 41 SDs, 0 SdLazy, 58 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 10 NumberOfFragments, 78 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 64 ConstructedInterpolants, 8 QuantifiedInterpolants, 4540 SizeOfPredicates, 22 NumberOfNonLiveVariables, 149 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...