./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 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_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_1.3.100.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_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 0.1.25-9a8b2e8 [2020-10-20 00:39:15,615 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:39:15,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:39:15,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:39:15,668 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:39:15,670 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:39:15,671 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:39:15,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:39:15,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:39:15,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:39:15,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:39:15,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:39:15,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:39:15,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:39:15,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:39:15,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:39:15,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:39:15,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:39:15,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:39:15,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:39:15,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:39:15,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:39:15,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:39:15,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:39:15,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:39:15,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:39:15,691 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:39:15,692 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:39:15,692 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:39:15,693 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:39:15,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:39:15,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:39:15,697 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:39:15,698 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:39:15,699 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:39:15,699 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:39:15,699 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:39:15,700 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:39:15,700 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:39:15,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:39:15,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:39:15,705 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:39:15,729 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:39:15,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:39:15,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:39:15,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:39:15,731 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:39:15,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:39:15,731 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:39:15,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:39:15,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:39:15,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:39:15,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:39:15,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:39:15,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:39:15,732 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:39:15,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:39:15,733 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:39:15,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:39:15,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:39:15,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:39:15,733 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:39:15,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:39:15,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:39:15,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:39:15,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:39:15,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:39:15,735 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:39:15,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:39:15,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:39:15,735 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:39:15,735 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 -> 955f5e50325f07eb13f5ec8c2df35bf16a648c2d [2020-10-20 00:39:15,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:39:15,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:39:15,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:39:15,951 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:39:15,951 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:39:15,952 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1011a.c [2020-10-20 00:39:16,006 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04c40881a/7b23b039829e4a4a9ab30f4b25d84f8a/FLAGba7a99771 [2020-10-20 00:39:16,373 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:39:16,374 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1011a.c [2020-10-20 00:39:16,380 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04c40881a/7b23b039829e4a4a9ab30f4b25d84f8a/FLAGba7a99771 [2020-10-20 00:39:16,752 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04c40881a/7b23b039829e4a4a9ab30f4b25d84f8a [2020-10-20 00:39:16,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:39:16,763 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:39:16,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:39:16,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:39:16,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:39:16,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:39:16" (1/1) ... [2020-10-20 00:39:16,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d017343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:16, skipping insertion in model container [2020-10-20 00:39:16,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:39:16" (1/1) ... [2020-10-20 00:39:16,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:39:16,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:39:17,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:39:17,085 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:39:17,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:39:17,125 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:39:17,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:17 WrapperNode [2020-10-20 00:39:17,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:39:17,127 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:39:17,127 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:39:17,128 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:39:17,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:17" (1/1) ... [2020-10-20 00:39:17,147 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:17" (1/1) ... [2020-10-20 00:39:17,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:39:17,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:39:17,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:39:17,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:39:17,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:17" (1/1) ... [2020-10-20 00:39:17,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:17" (1/1) ... [2020-10-20 00:39:17,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:17" (1/1) ... [2020-10-20 00:39:17,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:17" (1/1) ... [2020-10-20 00:39:17,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:17" (1/1) ... [2020-10-20 00:39:17,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:17" (1/1) ... [2020-10-20 00:39:17,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:17" (1/1) ... [2020-10-20 00:39:17,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:39:17,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:39:17,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:39:17,203 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:39:17,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:39:17,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:39:17,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:39:17,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-20 00:39:17,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:39:17,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-20 00:39:17,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:39:17,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:39:17,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:39:17,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:39:17,674 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:39:17,675 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-20 00:39:17,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:39:17 BoogieIcfgContainer [2020-10-20 00:39:17,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:39:17,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:39:17,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:39:17,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:39:17,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:39:16" (1/3) ... [2020-10-20 00:39:17,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad93de1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:39:17, skipping insertion in model container [2020-10-20 00:39:17,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:17" (2/3) ... [2020-10-20 00:39:17,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad93de1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:39:17, skipping insertion in model container [2020-10-20 00:39:17,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:39:17" (3/3) ... [2020-10-20 00:39:17,686 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1011a.c [2020-10-20 00:39:17,698 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:39:17,705 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:39:17,721 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:39:17,759 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:39:17,759 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:39:17,759 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:39:17,759 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:39:17,759 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:39:17,759 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:39:17,760 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:39:17,760 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:39:17,775 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-10-20 00:39:17,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 00:39:17,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:39:17,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:39:17,783 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:39:17,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:39:17,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1641221055, now seen corresponding path program 1 times [2020-10-20 00:39:17,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:39:17,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058173856] [2020-10-20 00:39:17,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:39:17,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:39:17,951 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 00:39:17,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058173856] [2020-10-20 00:39:17,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:39:17,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:39:17,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143701629] [2020-10-20 00:39:17,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:39:17,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:39:17,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:39:17,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:39:17,976 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-10-20 00:39:17,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:39:17,995 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2020-10-20 00:39:17,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:39:17,996 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-20 00:39:17,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:39:18,011 INFO L225 Difference]: With dead ends: 37 [2020-10-20 00:39:18,012 INFO L226 Difference]: Without dead ends: 16 [2020-10-20 00:39:18,015 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 00:39:18,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-20 00:39:18,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-20 00:39:18,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-20 00:39:18,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-10-20 00:39:18,055 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 9 [2020-10-20 00:39:18,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:39:18,055 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-20 00:39:18,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:39:18,055 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-10-20 00:39:18,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:39:18,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:39:18,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:39:18,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:39:18,057 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:39:18,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:39:18,057 INFO L82 PathProgramCache]: Analyzing trace with hash 558264036, now seen corresponding path program 1 times [2020-10-20 00:39:18,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:39:18,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847315282] [2020-10-20 00:39:18,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:39:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:39:18,100 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:39:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:39:18,131 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:39:18,156 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:39:18,156 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:39:18,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:39:18,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:39:18 BoogieIcfgContainer [2020-10-20 00:39:18,189 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:39:18,191 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:39:18,191 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:39:18,191 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:39:18,192 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:39:17" (3/4) ... [2020-10-20 00:39:18,196 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:39:18,196 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:39:18,200 INFO L168 Benchmark]: Toolchain (without parser) took 1440.12 ms. Allocated memory was 34.6 MB in the beginning and 46.1 MB in the end (delta: 11.5 MB). Free memory was 13.8 MB in the beginning and 17.4 MB in the end (delta: -3.6 MB). Peak memory consumption was 7.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:39:18,202 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 33.0 MB. Free memory was 19.3 MB in the beginning and 19.3 MB in the end (delta: 43.6 kB). Peak memory consumption was 43.6 kB. Max. memory is 14.3 GB. [2020-10-20 00:39:18,204 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.98 ms. Allocated memory was 34.6 MB in the beginning and 43.0 MB in the end (delta: 8.4 MB). Free memory was 12.9 MB in the beginning and 21.6 MB in the end (delta: -8.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:39:18,206 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.01 ms. Allocated memory is still 43.0 MB. Free memory was 21.6 MB in the beginning and 19.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:39:18,207 INFO L168 Benchmark]: Boogie Preprocessor took 31.27 ms. Allocated memory is still 43.0 MB. Free memory was 19.7 MB in the beginning and 18.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:39:18,209 INFO L168 Benchmark]: RCFGBuilder took 473.42 ms. Allocated memory was 43.0 MB in the beginning and 44.6 MB in the end (delta: 1.6 MB). Free memory was 18.1 MB in the beginning and 13.4 MB in the end (delta: 4.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:39:18,212 INFO L168 Benchmark]: TraceAbstraction took 510.93 ms. Allocated memory was 44.6 MB in the beginning and 46.1 MB in the end (delta: 1.6 MB). Free memory was 12.9 MB in the beginning and 18.0 MB in the end (delta: -5.1 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:39:18,214 INFO L168 Benchmark]: Witness Printer took 5.20 ms. Allocated memory is still 46.1 MB. Free memory was 18.0 MB in the beginning and 17.4 MB in the end (delta: 572.0 kB). Peak memory consumption was 572.0 kB. Max. memory is 14.3 GB. [2020-10-20 00:39:18,224 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 33.0 MB. Free memory was 19.3 MB in the beginning and 19.3 MB in the end (delta: 43.6 kB). Peak memory consumption was 43.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 362.98 ms. Allocated memory was 34.6 MB in the beginning and 43.0 MB in the end (delta: 8.4 MB). Free memory was 12.9 MB in the beginning and 21.6 MB in the end (delta: -8.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 44.01 ms. Allocated memory is still 43.0 MB. Free memory was 21.6 MB in the beginning and 19.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 31.27 ms. Allocated memory is still 43.0 MB. Free memory was 19.7 MB in the beginning and 18.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. * RCFGBuilder took 473.42 ms. Allocated memory was 43.0 MB in the beginning and 44.6 MB in the end (delta: 1.6 MB). Free memory was 18.1 MB in the beginning and 13.4 MB in the end (delta: 4.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 14.3 GB. * TraceAbstraction took 510.93 ms. Allocated memory was 44.6 MB in the beginning and 46.1 MB in the end (delta: 1.6 MB). Free memory was 12.9 MB in the beginning and 18.0 MB in the end (delta: -5.1 MB). There was no memory consumed. Max. memory is 14.3 GB. * Witness Printer took 5.20 ms. Allocated memory is still 46.1 MB. Free memory was 18.0 MB in the beginning and 17.4 MB in the end (delta: 572.0 kB). Peak memory consumption was 572.0 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 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: 0.4s, 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 0.1.25-9a8b2e8 [2020-10-20 00:39:20,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:39:20,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:39:20,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:39:20,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:39:20,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:39:20,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:39:20,535 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:39:20,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:39:20,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:39:20,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:39:20,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:39:20,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:39:20,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:39:20,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:39:20,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:39:20,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:39:20,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:39:20,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:39:20,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:39:20,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:39:20,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:39:20,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:39:20,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:39:20,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:39:20,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:39:20,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:39:20,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:39:20,594 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:39:20,595 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:39:20,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:39:20,596 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:39:20,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:39:20,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:39:20,598 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:39:20,598 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:39:20,599 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:39:20,599 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:39:20,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:39:20,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:39:20,601 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:39:20,602 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:39:20,623 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:39:20,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:39:20,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:39:20,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:39:20,625 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:39:20,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:39:20,626 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:39:20,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:39:20,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:39:20,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:39:20,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:39:20,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:39:20,627 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:39:20,627 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:39:20,628 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:39:20,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:39:20,628 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:39:20,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:39:20,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:39:20,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:39:20,629 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:39:20,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:39:20,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:39:20,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:39:20,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:39:20,630 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:39:20,631 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:39:20,631 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:39:20,631 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:39:20,631 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:39:20,632 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:39:20,632 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 -> 955f5e50325f07eb13f5ec8c2df35bf16a648c2d [2020-10-20 00:39:20,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:39:20,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:39:20,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:39:20,853 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:39:20,853 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:39:20,854 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1011a.c [2020-10-20 00:39:20,914 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ddd95fc2/b908dd2cb208428cb97a53dab4833462/FLAG92fa92ed6 [2020-10-20 00:39:21,355 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:39:21,356 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1011a.c [2020-10-20 00:39:21,364 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ddd95fc2/b908dd2cb208428cb97a53dab4833462/FLAG92fa92ed6 [2020-10-20 00:39:21,763 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ddd95fc2/b908dd2cb208428cb97a53dab4833462 [2020-10-20 00:39:21,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:39:21,774 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:39:21,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:39:21,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:39:21,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:39:21,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:39:21" (1/1) ... [2020-10-20 00:39:21,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2350664f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:21, skipping insertion in model container [2020-10-20 00:39:21,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:39:21" (1/1) ... [2020-10-20 00:39:21,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:39:21,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:39:22,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:39:22,093 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:39:22,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:39:22,139 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:39:22,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:22 WrapperNode [2020-10-20 00:39:22,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:39:22,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:39:22,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:39:22,141 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:39:22,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:22" (1/1) ... [2020-10-20 00:39:22,161 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:22" (1/1) ... [2020-10-20 00:39:22,185 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:39:22,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:39:22,186 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:39:22,186 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:39:22,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:22" (1/1) ... [2020-10-20 00:39:22,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:22" (1/1) ... [2020-10-20 00:39:22,199 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:22" (1/1) ... [2020-10-20 00:39:22,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:22" (1/1) ... [2020-10-20 00:39:22,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:22" (1/1) ... [2020-10-20 00:39:22,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:22" (1/1) ... [2020-10-20 00:39:22,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:22" (1/1) ... [2020-10-20 00:39:22,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:39:22,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:39:22,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:39:22,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:39:22,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:39:22,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:39:22,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:39:22,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-10-20 00:39:22,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 00:39:22,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:39:22,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:39:22,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-10-20 00:39:22,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 00:39:22,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:39:22,622 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:39:22,622 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-20 00:39:22,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:39:22 BoogieIcfgContainer [2020-10-20 00:39:22,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:39:22,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:39:22,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:39:22,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:39:22,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:39:21" (1/3) ... [2020-10-20 00:39:22,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7dfec8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:39:22, skipping insertion in model container [2020-10-20 00:39:22,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:22" (2/3) ... [2020-10-20 00:39:22,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7dfec8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:39:22, skipping insertion in model container [2020-10-20 00:39:22,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:39:22" (3/3) ... [2020-10-20 00:39:22,638 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1011a.c [2020-10-20 00:39:22,657 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:39:22,669 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:39:22,688 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:39:22,722 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:39:22,744 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:39:22,745 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:39:22,745 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:39:22,745 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:39:22,746 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:39:22,746 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:39:22,746 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:39:22,760 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-10-20 00:39:22,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 00:39:22,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:39:22,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:39:22,766 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:39:22,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:39:22,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1641221055, now seen corresponding path program 1 times [2020-10-20 00:39:22,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:39:22,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878340498] [2020-10-20 00:39:22,782 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 00:39:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:39:22,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:39:22,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:39:22,891 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 00:39:22,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:39:22,895 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 00:39:22,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878340498] [2020-10-20 00:39:22,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:39:22,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:39:22,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853199442] [2020-10-20 00:39:22,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:39:22,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:39:22,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:39:22,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:39:22,914 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-10-20 00:39:22,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:39:22,933 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2020-10-20 00:39:22,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:39:22,935 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-20 00:39:22,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:39:22,944 INFO L225 Difference]: With dead ends: 37 [2020-10-20 00:39:22,944 INFO L226 Difference]: Without dead ends: 16 [2020-10-20 00:39:22,947 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 00:39:22,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-20 00:39:22,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-20 00:39:22,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-20 00:39:22,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-10-20 00:39:22,978 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 9 [2020-10-20 00:39:22,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:39:22,978 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-20 00:39:22,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:39:22,984 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-10-20 00:39:22,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:39:22,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:39:22,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:39:23,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:39:23,199 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:39:23,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:39:23,200 INFO L82 PathProgramCache]: Analyzing trace with hash 558264036, now seen corresponding path program 1 times [2020-10-20 00:39:23,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:39:23,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2036960896] [2020-10-20 00:39:23,202 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 00:39:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:39:23,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 00:39:23,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:39:23,389 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 00:39:23,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:39:23,485 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 00:39:23,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2036960896] [2020-10-20 00:39:23,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:39:23,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-10-20 00:39:23,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898155518] [2020-10-20 00:39:23,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 00:39:23,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:39:23,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 00:39:23,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-20 00:39:23,490 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 9 states. [2020-10-20 00:39:23,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:39:23,607 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2020-10-20 00:39:23,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 00:39:23,608 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2020-10-20 00:39:23,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:39:23,609 INFO L225 Difference]: With dead ends: 19 [2020-10-20 00:39:23,609 INFO L226 Difference]: Without dead ends: 16 [2020-10-20 00:39:23,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-20 00:39:23,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-20 00:39:23,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-20 00:39:23,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-20 00:39:23,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-10-20 00:39:23,614 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 11 [2020-10-20 00:39:23,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:39:23,615 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-10-20 00:39:23,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 00:39:23,615 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-10-20 00:39:23,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 00:39:23,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:39:23,616 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:39:23,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:39:23,817 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:39:23,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:39:23,817 INFO L82 PathProgramCache]: Analyzing trace with hash -2014349959, now seen corresponding path program 1 times [2020-10-20 00:39:23,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:39:23,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2042675813] [2020-10-20 00:39:23,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-20 00:39:23,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:39:23,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-20 00:39:23,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:39:23,997 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:39:24,037 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 00:39:24,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:39:24,346 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 00:39:24,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2042675813] [2020-10-20 00:39:24,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:39:24,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 11] imperfect sequences [] total 17 [2020-10-20 00:39:24,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904619950] [2020-10-20 00:39:24,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-20 00:39:24,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:39:24,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-20 00:39:24,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-10-20 00:39:24,350 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand 17 states. [2020-10-20 00:39:24,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:39:24,609 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2020-10-20 00:39:24,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 00:39:24,610 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 15 [2020-10-20 00:39:24,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:39:24,610 INFO L225 Difference]: With dead ends: 16 [2020-10-20 00:39:24,610 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 00:39:24,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2020-10-20 00:39:24,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 00:39:24,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 00:39:24,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 00:39:24,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 00:39:24,612 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-10-20 00:39:24,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:39:24,613 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 00:39:24,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-20 00:39:24,613 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 00:39:24,613 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 00:39:24,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 00:39:24,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 00:39:24,946 INFO L277 CegarLoopResult]: At program point L56(lines 41 57) the Hoare annotation is: true [2020-10-20 00:39:24,946 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-20 00:39:24,946 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-10-20 00:39:24,947 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 00:39:24,947 INFO L274 CegarLoopResult]: For program point L32-1(lines 32 36) no Hoare annotation was computed. [2020-10-20 00:39:24,947 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|) [2020-10-20 00:39:24,947 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 00:39:24,947 INFO L274 CegarLoopResult]: For program point L32-3(lines 32 36) no Hoare annotation was computed. [2020-10-20 00:39:24,947 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 00:39:24,948 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-20 00:39:24,948 INFO L274 CegarLoopResult]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2020-10-20 00:39:24,949 INFO L270 CegarLoopResult]: At program point L16-2(lines 16 20) the Hoare annotation is: (= (_ +zero 8 24) ULTIMATE.start_fabs_float_~x) [2020-10-20 00:39:24,949 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 00:39:24,949 INFO L274 CegarLoopResult]: For program point L21(lines 21 25) no Hoare annotation was computed. [2020-10-20 00:39:24,949 INFO L274 CegarLoopResult]: For program point L21-1(lines 14 27) no Hoare annotation was computed. [2020-10-20 00:39:24,949 INFO L274 CegarLoopResult]: For program point L21-2(lines 21 25) no Hoare annotation was computed. [2020-10-20 00:39:24,950 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|) [2020-10-20 00:39:24,950 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)) [2020-10-20 00:39:24,950 INFO L274 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-10-20 00:39:24,950 INFO L274 CegarLoopResult]: For program point L51-2(lines 51 54) no Hoare annotation was computed. [2020-10-20 00:39:24,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:39:24 BoogieIcfgContainer [2020-10-20 00:39:24,974 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:39:24,974 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:39:24,975 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:39:24,975 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:39:24,976 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:39:22" (3/4) ... [2020-10-20 00:39:24,981 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 00:39:24,993 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-10-20 00:39:24,994 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 00:39:24,994 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-20 00:39:24,995 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 00:39:25,035 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:39:25,035 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:39:25,037 INFO L168 Benchmark]: Toolchain (without parser) took 3268.60 ms. Allocated memory was 35.1 MB in the beginning and 51.4 MB in the end (delta: 16.3 MB). Free memory was 12.1 MB in the beginning and 26.0 MB in the end (delta: -13.9 MB). Peak memory consumption was 2.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:39:25,038 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 34.1 MB. Free memory was 19.1 MB in the beginning and 19.1 MB in the end (delta: 41.9 kB). Peak memory consumption was 41.9 kB. Max. memory is 14.3 GB. [2020-10-20 00:39:25,039 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.27 ms. Allocated memory was 35.1 MB in the beginning and 43.5 MB in the end (delta: 8.4 MB). Free memory was 11.2 MB in the beginning and 25.5 MB in the end (delta: -14.3 MB). Peak memory consumption was 7.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:39:25,039 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.91 ms. Allocated memory is still 43.5 MB. Free memory was 25.5 MB in the beginning and 23.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:39:25,040 INFO L168 Benchmark]: Boogie Preprocessor took 43.49 ms. Allocated memory is still 43.5 MB. Free memory was 23.7 MB in the beginning and 21.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:39:25,041 INFO L168 Benchmark]: RCFGBuilder took 394.39 ms. Allocated memory was 43.5 MB in the beginning and 43.0 MB in the end (delta: -524.3 kB). Free memory was 21.9 MB in the beginning and 15.3 MB in the end (delta: 6.6 MB). Peak memory consumption was 10.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:39:25,041 INFO L168 Benchmark]: TraceAbstraction took 2349.22 ms. Allocated memory was 43.0 MB in the beginning and 51.4 MB in the end (delta: 8.4 MB). Free memory was 14.8 MB in the beginning and 28.9 MB in the end (delta: -14.1 MB). Peak memory consumption was 10.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:39:25,042 INFO L168 Benchmark]: Witness Printer took 60.88 ms. Allocated memory is still 51.4 MB. Free memory was 28.4 MB in the beginning and 26.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:39:25,047 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 34.1 MB. Free memory was 19.1 MB in the beginning and 19.1 MB in the end (delta: 41.9 kB). Peak memory consumption was 41.9 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 365.27 ms. Allocated memory was 35.1 MB in the beginning and 43.5 MB in the end (delta: 8.4 MB). Free memory was 11.2 MB in the beginning and 25.5 MB in the end (delta: -14.3 MB). Peak memory consumption was 7.5 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 44.91 ms. Allocated memory is still 43.5 MB. Free memory was 25.5 MB in the beginning and 23.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 43.49 ms. Allocated memory is still 43.5 MB. Free memory was 23.7 MB in the beginning and 21.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * RCFGBuilder took 394.39 ms. Allocated memory was 43.5 MB in the beginning and 43.0 MB in the end (delta: -524.3 kB). Free memory was 21.9 MB in the beginning and 15.3 MB in the end (delta: 6.6 MB). Peak memory consumption was 10.2 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2349.22 ms. Allocated memory was 43.0 MB in the beginning and 51.4 MB in the end (delta: 8.4 MB). Free memory was 14.8 MB in the beginning and 28.9 MB in the end (delta: -14.1 MB). Peak memory consumption was 10.8 MB. Max. memory is 14.3 GB. * Witness Printer took 60.88 ms. Allocated memory is still 51.4 MB. Free memory was 28.4 MB in the beginning and 26.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 14.3 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: 2.1s, 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, 0.6s 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, 0.6s 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...