./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0832a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e1a00cf 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 ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0832a.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 7bef213e800d9f1856c750fa5b59ba443e11e7ea ................................................................................................................................................................................................................................................................................................................... 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 ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0832a.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 7bef213e800d9f1856c750fa5b59ba443e11e7ea ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-0e1a00c [2020-11-29 15:06:42,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 15:06:42,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 15:06:42,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 15:06:42,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 15:06:42,678 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 15:06:42,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 15:06:42,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 15:06:42,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 15:06:42,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 15:06:42,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 15:06:42,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 15:06:42,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 15:06:42,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 15:06:42,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 15:06:42,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 15:06:42,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 15:06:42,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 15:06:42,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 15:06:42,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 15:06:42,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 15:06:42,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 15:06:42,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 15:06:42,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 15:06:42,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 15:06:42,733 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 15:06:42,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 15:06:42,735 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 15:06:42,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 15:06:42,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 15:06:42,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 15:06:42,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 15:06:42,741 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 15:06:42,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 15:06:42,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 15:06:42,750 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 15:06:42,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 15:06:42,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 15:06:42,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 15:06:42,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 15:06:42,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 15:06:42,756 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 15:06:42,810 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 15:06:42,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 15:06:42,816 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 15:06:42,817 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 15:06:42,817 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 15:06:42,818 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 15:06:42,818 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 15:06:42,818 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 15:06:42,818 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 15:06:42,819 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 15:06:42,820 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 15:06:42,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 15:06:42,821 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 15:06:42,821 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 15:06:42,821 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 15:06:42,821 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 15:06:42,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 15:06:42,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 15:06:42,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 15:06:42,822 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 15:06:42,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 15:06:42,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 15:06:42,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 15:06:42,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 15:06:42,824 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 15:06:42,824 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 15:06:42,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 15:06:42,825 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 15:06:42,825 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 15:06:42,825 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7bef213e800d9f1856c750fa5b59ba443e11e7ea [2020-11-29 15:06:43,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 15:06:43,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 15:06:43,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 15:06:43,318 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 15:06:43,319 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 15:06:43,321 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0832a.c [2020-11-29 15:06:43,412 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7774ce174/d6ea12c8d47d488d907f3af9469fa914/FLAG05fe1b7b3 [2020-11-29 15:06:43,943 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 15:06:43,943 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0832a.c [2020-11-29 15:06:43,956 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7774ce174/d6ea12c8d47d488d907f3af9469fa914/FLAG05fe1b7b3 [2020-11-29 15:06:44,289 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7774ce174/d6ea12c8d47d488d907f3af9469fa914 [2020-11-29 15:06:44,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 15:06:44,300 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 15:06:44,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 15:06:44,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 15:06:44,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 15:06:44,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:06:44" (1/1) ... [2020-11-29 15:06:44,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34f7127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:44, skipping insertion in model container [2020-11-29 15:06:44,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:06:44" (1/1) ... [2020-11-29 15:06:44,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 15:06:44,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 15:06:44,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 15:06:44,687 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 15:06:44,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 15:06:44,812 INFO L208 MainTranslator]: Completed translation [2020-11-29 15:06:44,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:44 WrapperNode [2020-11-29 15:06:44,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 15:06:44,815 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 15:06:44,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 15:06:44,816 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 15:06:44,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:44" (1/1) ... [2020-11-29 15:06:44,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:44" (1/1) ... [2020-11-29 15:06:44,873 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 15:06:44,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 15:06:44,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 15:06:44,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 15:06:44,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:44" (1/1) ... [2020-11-29 15:06:44,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:44" (1/1) ... [2020-11-29 15:06:44,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:44" (1/1) ... [2020-11-29 15:06:44,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:44" (1/1) ... [2020-11-29 15:06:44,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:44" (1/1) ... [2020-11-29 15:06:44,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:44" (1/1) ... [2020-11-29 15:06:44,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:44" (1/1) ... [2020-11-29 15:06:44,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 15:06:44,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 15:06:44,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 15:06:44,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 15:06:44,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:44" (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 [2020-11-29 15:06:45,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 15:06:45,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 15:06:45,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 15:06:45,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-29 15:06:45,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-29 15:06:45,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 15:06:45,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 15:06:45,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 15:06:45,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-11-29 15:06:45,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 15:06:45,733 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 15:06:45,734 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-29 15:06:45,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:06:45 BoogieIcfgContainer [2020-11-29 15:06:45,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 15:06:45,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 15:06:45,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 15:06:45,742 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 15:06:45,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:06:44" (1/3) ... [2020-11-29 15:06:45,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f61170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:06:45, skipping insertion in model container [2020-11-29 15:06:45,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:44" (2/3) ... [2020-11-29 15:06:45,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f61170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:06:45, skipping insertion in model container [2020-11-29 15:06:45,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:06:45" (3/3) ... [2020-11-29 15:06:45,746 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0832a.c [2020-11-29 15:06:45,761 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 15:06:45,766 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 15:06:45,779 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 15:06:45,807 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 15:06:45,808 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 15:06:45,808 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 15:06:45,808 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 15:06:45,808 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 15:06:45,809 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 15:06:45,809 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 15:06:45,809 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 15:06:45,824 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-11-29 15:06:45,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 15:06:45,830 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:06:45,831 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:06:45,832 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:06:45,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:06:45,839 INFO L82 PathProgramCache]: Analyzing trace with hash 354246130, now seen corresponding path program 1 times [2020-11-29 15:06:45,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 15:06:45,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816834206] [2020-11-29 15:06:45,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 15:06:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:06:46,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:06:46,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816834206] [2020-11-29 15:06:46,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:06:46,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 15:06:46,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718036688] [2020-11-29 15:06:46,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 15:06:46,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 15:06:46,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 15:06:46,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 15:06:46,041 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2020-11-29 15:06:46,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:06:46,062 INFO L93 Difference]: Finished difference Result 71 states and 113 transitions. [2020-11-29 15:06:46,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 15:06:46,064 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-29 15:06:46,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:06:46,074 INFO L225 Difference]: With dead ends: 71 [2020-11-29 15:06:46,074 INFO L226 Difference]: Without dead ends: 33 [2020-11-29 15:06:46,078 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 [2020-11-29 15:06:46,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-29 15:06:46,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-11-29 15:06:46,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-29 15:06:46,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2020-11-29 15:06:46,117 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 8 [2020-11-29 15:06:46,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:06:46,118 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2020-11-29 15:06:46,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 15:06:46,118 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2020-11-29 15:06:46,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 15:06:46,119 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:06:46,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:06:46,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 15:06:46,120 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:06:46,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:06:46,121 INFO L82 PathProgramCache]: Analyzing trace with hash 325000437, now seen corresponding path program 1 times [2020-11-29 15:06:46,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 15:06:46,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977240355] [2020-11-29 15:06:46,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 15:06:46,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 15:06:46,179 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 15:06:46,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 15:06:46,219 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 15:06:46,259 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 15:06:46,259 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 15:06:46,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 15:06:46,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 03:06:46 BoogieIcfgContainer [2020-11-29 15:06:46,303 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 15:06:46,304 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 15:06:46,304 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 15:06:46,304 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 15:06:46,305 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:06:45" (3/4) ... [2020-11-29 15:06:46,309 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 15:06:46,309 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 15:06:46,313 INFO L168 Benchmark]: Toolchain (without parser) took 2015.74 ms. Allocated memory was 44.0 MB in the beginning and 56.6 MB in the end (delta: 12.6 MB). Free memory was 27.2 MB in the beginning and 28.4 MB in the end (delta: -1.1 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2020-11-29 15:06:46,314 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 44.0 MB. Free memory is still 23.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 15:06:46,320 INFO L168 Benchmark]: CACSL2BoogieTranslator took 511.83 ms. Allocated memory was 44.0 MB in the beginning and 56.6 MB in the end (delta: 12.6 MB). Free memory was 26.5 MB in the beginning and 35.9 MB in the end (delta: -9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 15:06:46,321 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.52 ms. Allocated memory is still 56.6 MB. Free memory was 35.7 MB in the beginning and 33.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 15:06:46,322 INFO L168 Benchmark]: Boogie Preprocessor took 45.23 ms. Allocated memory is still 56.6 MB. Free memory was 33.8 MB in the beginning and 32.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 15:06:46,325 INFO L168 Benchmark]: RCFGBuilder took 815.59 ms. Allocated memory is still 56.6 MB. Free memory was 32.0 MB in the beginning and 38.0 MB in the end (delta: -6.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. [2020-11-29 15:06:46,326 INFO L168 Benchmark]: TraceAbstraction took 564.81 ms. Allocated memory is still 56.6 MB. Free memory was 37.8 MB in the beginning and 28.7 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. [2020-11-29 15:06:46,326 INFO L168 Benchmark]: Witness Printer took 5.68 ms. Allocated memory is still 56.6 MB. Free memory was 28.7 MB in the beginning and 28.4 MB in the end (delta: 296.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 15:06:46,331 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 44.0 MB. Free memory is still 23.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 511.83 ms. Allocated memory was 44.0 MB in the beginning and 56.6 MB in the end (delta: 12.6 MB). Free memory was 26.5 MB in the beginning and 35.9 MB in the end (delta: -9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.52 ms. Allocated memory is still 56.6 MB. Free memory was 35.7 MB in the beginning and 33.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.23 ms. Allocated memory is still 56.6 MB. Free memory was 33.8 MB in the beginning and 32.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 815.59 ms. Allocated memory is still 56.6 MB. Free memory was 32.0 MB in the beginning and 38.0 MB in the end (delta: -6.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 564.81 ms. Allocated memory is still 56.6 MB. Free memory was 37.8 MB in the beginning and 28.7 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. * Witness Printer took 5.68 ms. Allocated memory is still 56.6 MB. Free memory was 28.7 MB in the beginning and 28.4 MB in the end (delta: 296.5 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 123, overapproximation of someUnaryDOUBLEoperation at line 21, overapproximation of bitwiseAnd at line 48, overapproximation of someBinaryArithmeticFLOAToperation at line 52. Possible FailurePath: [L17-L36] static const float one_exp = 1.0, halF_exp[2] = { 0.5, -0.5, }, huge_exp = 1.0e+30, twom100_exp = 7.8886090522e-31, ln2HI_exp[2] = { 6.9313812256e-01, -6.9313812256e-01, }, ln2LO_exp[2] = { 9.0580006145e-06, -9.0580006145e-06, }, invln2_exp = 1.4426950216e+00, P1_exp = 1.6666667163e-01, P2_exp = -2.7777778450e-03, P3_exp = 6.6137559770e-05, P4_exp = -1.6533901999e-06, P5_exp = 4.1381369442e-08; VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={10:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L119] float x = 0.0f; [L39] float y, hi, lo, c, t; [L40] __int32_t k = 0, xsb, sx; [L41] __uint32_t hx; VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={10:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L44] ieee_float_shape_type gf_u; [L45] gf_u.value = (x) [L46] EXPR gf_u.word [L46] (sx) = gf_u.word [L48] xsb = (sx >> 31) & 1 [L49] hx = sx & 0x7fffffff VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={10:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L51] COND TRUE ((hx) > 0x7f800000L) [L52] return x + x; VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={10:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L120] float res = __ieee754_expf(x); [L123] COND TRUE res != 1.0f VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={10:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L3] __assert_fail("0", "float_req_bl_0832a.c", 3, "reach_error") VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={10:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 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: 46 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=37occurred 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, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 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 0.2.0-0e1a00c [2020-11-29 15:06:48,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 15:06:48,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 15:06:49,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 15:06:49,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 15:06:49,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 15:06:49,028 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 15:06:49,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 15:06:49,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 15:06:49,048 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 15:06:49,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 15:06:49,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 15:06:49,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 15:06:49,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 15:06:49,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 15:06:49,062 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 15:06:49,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 15:06:49,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 15:06:49,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 15:06:49,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 15:06:49,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 15:06:49,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 15:06:49,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 15:06:49,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 15:06:49,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 15:06:49,091 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 15:06:49,092 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 15:06:49,094 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 15:06:49,095 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 15:06:49,096 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 15:06:49,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 15:06:49,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 15:06:49,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 15:06:49,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 15:06:49,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 15:06:49,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 15:06:49,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 15:06:49,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 15:06:49,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 15:06:49,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 15:06:49,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 15:06:49,108 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 15:06:49,160 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 15:06:49,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 15:06:49,165 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 15:06:49,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 15:06:49,165 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 15:06:49,166 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 15:06:49,166 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 15:06:49,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 15:06:49,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 15:06:49,167 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 15:06:49,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 15:06:49,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 15:06:49,169 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 15:06:49,169 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 15:06:49,169 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 15:06:49,169 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 15:06:49,170 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 15:06:49,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 15:06:49,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 15:06:49,170 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 15:06:49,171 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 15:06:49,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 15:06:49,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 15:06:49,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 15:06:49,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 15:06:49,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 15:06:49,172 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 15:06:49,172 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 15:06:49,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 15:06:49,173 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 15:06:49,173 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 15:06:49,173 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7bef213e800d9f1856c750fa5b59ba443e11e7ea [2020-11-29 15:06:49,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 15:06:49,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 15:06:49,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 15:06:49,614 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 15:06:49,615 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 15:06:49,616 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0832a.c [2020-11-29 15:06:49,696 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73a102b56/4144c2315ab0491ea2481465f0f101d3/FLAG6983cf698 [2020-11-29 15:06:50,396 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 15:06:50,397 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0832a.c [2020-11-29 15:06:50,405 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73a102b56/4144c2315ab0491ea2481465f0f101d3/FLAG6983cf698 [2020-11-29 15:06:50,724 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73a102b56/4144c2315ab0491ea2481465f0f101d3 [2020-11-29 15:06:50,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 15:06:50,735 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 15:06:50,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 15:06:50,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 15:06:50,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 15:06:50,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:06:50" (1/1) ... [2020-11-29 15:06:50,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1490f8b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:50, skipping insertion in model container [2020-11-29 15:06:50,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:06:50" (1/1) ... [2020-11-29 15:06:50,756 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 15:06:50,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 15:06:51,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 15:06:51,123 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 15:06:51,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 15:06:51,193 INFO L208 MainTranslator]: Completed translation [2020-11-29 15:06:51,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:51 WrapperNode [2020-11-29 15:06:51,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 15:06:51,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 15:06:51,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 15:06:51,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 15:06:51,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:51" (1/1) ... [2020-11-29 15:06:51,222 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:51" (1/1) ... [2020-11-29 15:06:51,253 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 15:06:51,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 15:06:51,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 15:06:51,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 15:06:51,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:51" (1/1) ... [2020-11-29 15:06:51,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:51" (1/1) ... [2020-11-29 15:06:51,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:51" (1/1) ... [2020-11-29 15:06:51,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:51" (1/1) ... [2020-11-29 15:06:51,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:51" (1/1) ... [2020-11-29 15:06:51,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:51" (1/1) ... [2020-11-29 15:06:51,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:51" (1/1) ... [2020-11-29 15:06:51,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 15:06:51,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 15:06:51,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 15:06:51,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 15:06:51,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:51" (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 [2020-11-29 15:06:51,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2020-11-29 15:06:51,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 15:06:51,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 15:06:51,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-29 15:06:51,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 15:06:51,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 15:06:51,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 15:06:51,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-29 15:06:51,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-29 15:06:51,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 15:07:01,796 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 15:07:01,797 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-29 15:07:01,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:07:01 BoogieIcfgContainer [2020-11-29 15:07:01,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 15:07:01,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 15:07:01,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 15:07:01,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 15:07:01,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:06:50" (1/3) ... [2020-11-29 15:07:01,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@567b978b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:07:01, skipping insertion in model container [2020-11-29 15:07:01,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:51" (2/3) ... [2020-11-29 15:07:01,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@567b978b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:07:01, skipping insertion in model container [2020-11-29 15:07:01,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:07:01" (3/3) ... [2020-11-29 15:07:01,809 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0832a.c [2020-11-29 15:07:01,824 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 15:07:01,828 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 15:07:01,839 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 15:07:01,867 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 15:07:01,868 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 15:07:01,868 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 15:07:01,868 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 15:07:01,868 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 15:07:01,868 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 15:07:01,869 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 15:07:01,869 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 15:07:01,883 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-11-29 15:07:01,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 15:07:01,889 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:07:01,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:07:01,891 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:07:01,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:07:01,897 INFO L82 PathProgramCache]: Analyzing trace with hash 354246130, now seen corresponding path program 1 times [2020-11-29 15:07:01,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 15:07:01,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [383105703] [2020-11-29 15:07:01,909 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 [2020-11-29 15:07:02,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:07:02,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 15:07:02,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 15:07:02,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:07:02,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 15:07:02,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:07:02,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [383105703] [2020-11-29 15:07:02,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:07:02,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 15:07:02,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614400348] [2020-11-29 15:07:02,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 15:07:02,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 15:07:02,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 15:07:02,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 15:07:02,580 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2020-11-29 15:07:02,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:07:02,601 INFO L93 Difference]: Finished difference Result 71 states and 113 transitions. [2020-11-29 15:07:02,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 15:07:02,603 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-29 15:07:02,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:07:02,614 INFO L225 Difference]: With dead ends: 71 [2020-11-29 15:07:02,614 INFO L226 Difference]: Without dead ends: 33 [2020-11-29 15:07:02,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 15:07:02,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-29 15:07:02,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-11-29 15:07:02,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-29 15:07:02,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2020-11-29 15:07:02,656 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 8 [2020-11-29 15:07:02,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:07:02,657 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2020-11-29 15:07:02,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 15:07:02,657 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2020-11-29 15:07:02,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 15:07:02,658 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:07:02,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:07:02,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 15:07:02,869 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:07:02,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:07:02,872 INFO L82 PathProgramCache]: Analyzing trace with hash 325000437, now seen corresponding path program 1 times [2020-11-29 15:07:02,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 15:07:02,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203154666] [2020-11-29 15:07:02,874 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 [2020-11-29 15:07:03,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:07:03,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 15:07:03,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 15:07:03,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:07:03,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 15:07:03,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:07:03,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203154666] [2020-11-29 15:07:03,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:07:03,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-29 15:07:03,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870839436] [2020-11-29 15:07:03,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 15:07:03,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 15:07:03,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 15:07:03,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-29 15:07:03,759 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand 8 states. [2020-11-29 15:07:15,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:07:15,515 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2020-11-29 15:07:15,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 15:07:15,609 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2020-11-29 15:07:15,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:07:15,610 INFO L225 Difference]: With dead ends: 54 [2020-11-29 15:07:15,610 INFO L226 Difference]: Without dead ends: 33 [2020-11-29 15:07:15,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-29 15:07:15,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-29 15:07:15,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2020-11-29 15:07:15,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-29 15:07:15,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-11-29 15:07:15,616 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 9 [2020-11-29 15:07:15,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:07:15,617 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-11-29 15:07:15,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 15:07:15,617 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-11-29 15:07:15,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 15:07:15,618 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:07:15,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:07:15,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 15:07:15,826 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:07:15,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:07:15,827 INFO L82 PathProgramCache]: Analyzing trace with hash -239562945, now seen corresponding path program 1 times [2020-11-29 15:07:15,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 15:07:15,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700071277] [2020-11-29 15:07:15,828 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 [2020-11-29 15:07:16,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:07:16,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 15:07:16,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 15:07:16,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:07:16,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 15:07:18,070 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-11-29 15:07:18,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:07:18,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700071277] [2020-11-29 15:07:18,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:07:18,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-11-29 15:07:18,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429350047] [2020-11-29 15:07:18,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 15:07:18,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 15:07:18,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 15:07:18,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-29 15:07:18,270 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 10 states. [2020-11-29 15:07:43,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:07:43,853 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2020-11-29 15:07:43,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 15:07:43,854 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-11-29 15:07:43,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:07:43,855 INFO L225 Difference]: With dead ends: 33 [2020-11-29 15:07:43,855 INFO L226 Difference]: Without dead ends: 29 [2020-11-29 15:07:43,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-11-29 15:07:43,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-29 15:07:43,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-29 15:07:43,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-29 15:07:43,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-11-29 15:07:43,861 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 15 [2020-11-29 15:07:43,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:07:43,861 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-11-29 15:07:43,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 15:07:43,862 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-11-29 15:07:43,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 15:07:43,862 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:07:43,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:07:44,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 15:07:44,065 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:07:44,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:07:44,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1708303706, now seen corresponding path program 1 times [2020-11-29 15:07:44,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 15:07:44,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [678374530] [2020-11-29 15:07:44,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-29 15:07:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:07:45,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 15:07:45,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 15:07:45,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:07:45,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 15:07:45,812 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2020-11-29 15:07:46,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:07:46,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [678374530] [2020-11-29 15:07:46,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:07:46,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-29 15:07:46,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42854092] [2020-11-29 15:07:46,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 15:07:46,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 15:07:46,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 15:07:46,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-29 15:07:46,094 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 6 states. [2020-11-29 15:07:46,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:07:46,371 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2020-11-29 15:07:46,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 15:07:46,374 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-11-29 15:07:46,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:07:46,374 INFO L225 Difference]: With dead ends: 29 [2020-11-29 15:07:46,375 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 15:07:46,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-29 15:07:46,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 15:07:46,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 15:07:46,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 15:07:46,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 15:07:46,376 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-29 15:07:46,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:07:46,376 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 15:07:46,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 15:07:46,377 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 15:07:46,377 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 15:07:46,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-29 15:07:46,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 15:07:46,771 INFO L262 CegarLoopResult]: For program point L60(lines 60 75) no Hoare annotation was computed. [2020-11-29 15:07:46,771 INFO L262 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-29 15:07:46,771 INFO L262 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-29 15:07:46,771 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 15:07:46,771 INFO L262 CegarLoopResult]: For program point L61(lines 61 70) no Hoare annotation was computed. [2020-11-29 15:07:46,771 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 15:07:46,771 INFO L262 CegarLoopResult]: For program point L61-2(lines 61 70) no Hoare annotation was computed. [2020-11-29 15:07:46,772 INFO L262 CegarLoopResult]: For program point L53(lines 53 54) no Hoare annotation was computed. [2020-11-29 15:07:46,772 INFO L262 CegarLoopResult]: For program point L86-1(lines 86 90) no Hoare annotation was computed. [2020-11-29 15:07:46,772 INFO L258 CegarLoopResult]: At program point L86-2(lines 86 90) the Hoare annotation is: false [2020-11-29 15:07:46,772 INFO L265 CegarLoopResult]: At program point L128(lines 113 129) the Hoare annotation is: true [2020-11-29 15:07:46,772 INFO L262 CegarLoopResult]: For program point L54(line 54) no Hoare annotation was computed. [2020-11-29 15:07:46,772 INFO L262 CegarLoopResult]: For program point L54-2(line 54) no Hoare annotation was computed. [2020-11-29 15:07:46,772 INFO L262 CegarLoopResult]: For program point L104(lines 104 108) no Hoare annotation was computed. [2020-11-29 15:07:46,772 INFO L262 CegarLoopResult]: For program point L104-1(lines 97 110) no Hoare annotation was computed. [2020-11-29 15:07:46,773 INFO L262 CegarLoopResult]: For program point L104-2(lines 104 108) no Hoare annotation was computed. [2020-11-29 15:07:46,773 INFO L262 CegarLoopResult]: For program point L55(lines 55 56) no Hoare annotation was computed. [2020-11-29 15:07:46,773 INFO L262 CegarLoopResult]: For program point L80(lines 80 83) no Hoare annotation was computed. [2020-11-29 15:07:46,773 INFO L262 CegarLoopResult]: For program point L72(lines 72 75) no Hoare annotation was computed. [2020-11-29 15:07:46,773 INFO L262 CegarLoopResult]: For program point L72-2(lines 60 75) no Hoare annotation was computed. [2020-11-29 15:07:46,773 INFO L262 CegarLoopResult]: For program point L73(lines 73 74) no Hoare annotation was computed. [2020-11-29 15:07:46,773 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 15:07:46,773 INFO L262 CegarLoopResult]: For program point L123(lines 123 126) no Hoare annotation was computed. [2020-11-29 15:07:46,773 INFO L262 CegarLoopResult]: For program point L57(lines 57 58) no Hoare annotation was computed. [2020-11-29 15:07:46,774 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-29 15:07:46,778 INFO L262 CegarLoopResult]: For program point L99-1(lines 99 103) no Hoare annotation was computed. [2020-11-29 15:07:46,779 INFO L258 CegarLoopResult]: At program point L99-2(lines 99 103) the Hoare annotation is: false [2020-11-29 15:07:46,779 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 15:07:46,779 INFO L262 CegarLoopResult]: For program point L91(lines 91 95) no Hoare annotation was computed. [2020-11-29 15:07:46,779 INFO L262 CegarLoopResult]: For program point L91-1(lines 84 97) no Hoare annotation was computed. [2020-11-29 15:07:46,779 INFO L262 CegarLoopResult]: For program point L91-2(lines 91 95) no Hoare annotation was computed. [2020-11-29 15:07:46,780 INFO L262 CegarLoopResult]: For program point L84(lines 84 110) no Hoare annotation was computed. [2020-11-29 15:07:46,780 INFO L262 CegarLoopResult]: For program point L51(lines 51 52) no Hoare annotation was computed. [2020-11-29 15:07:46,780 INFO L258 CegarLoopResult]: At program point L109(lines 38 111) the Hoare annotation is: (let ((.cse0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)))) (and (= currentRoundingMode roundNearestTiesToEven) (= ~one_exp~0 .cse0) (= ULTIMATE.start___ieee754_expf_~x (_ +zero 8 24)) (= |ULTIMATE.start___ieee754_expf_#res| (fp.add currentRoundingMode .cse0 (_ +zero 8 24))))) [2020-11-29 15:07:46,780 INFO L262 CegarLoopResult]: For program point L43-1(lines 43 47) no Hoare annotation was computed. [2020-11-29 15:07:46,781 INFO L258 CegarLoopResult]: At program point L43-2(lines 43 47) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (= ~one_exp~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0))) (= ~huge_exp~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= ULTIMATE.start___ieee754_expf_~x (_ +zero 8 24))) [2020-11-29 15:07:46,781 INFO L262 CegarLoopResult]: For program point L43-3(lines 43 47) no Hoare annotation was computed. [2020-11-29 15:07:46,793 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:07:46,796 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,797 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,797 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,797 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,797 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,798 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,799 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:07:46,799 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,800 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,800 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,800 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,800 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,801 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,802 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:07:46,802 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,802 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,802 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,803 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,803 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,803 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:07:46,804 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,804 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,804 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,804 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,805 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 03:07:46 BoogieIcfgContainer [2020-11-29 15:07:46,807 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 15:07:46,808 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 15:07:46,808 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 15:07:46,808 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 15:07:46,809 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:07:01" (3/4) ... [2020-11-29 15:07:46,813 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 15:07:46,826 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-11-29 15:07:46,827 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-29 15:07:46,827 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 15:07:46,828 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 15:07:46,858 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && one_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0))) && x == ~Pluszero~LONGDOUBLE()) && \result == ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)), ~Pluszero~LONGDOUBLE()) [2020-11-29 15:07:46,906 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-11-29 15:07:46,907 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 15:07:46,908 INFO L168 Benchmark]: Toolchain (without parser) took 56178.85 ms. Allocated memory is still 56.6 MB. Free memory was 33.6 MB in the beginning and 28.7 MB in the end (delta: 4.9 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2020-11-29 15:07:46,909 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 41.9 MB. Free memory is still 21.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 15:07:46,909 INFO L168 Benchmark]: CACSL2BoogieTranslator took 456.49 ms. Allocated memory is still 56.6 MB. Free memory was 33.0 MB in the beginning and 35.2 MB in the end (delta: -2.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 15:07:46,910 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.72 ms. Allocated memory is still 56.6 MB. Free memory was 35.0 MB in the beginning and 33.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 15:07:46,910 INFO L168 Benchmark]: Boogie Preprocessor took 54.00 ms. Allocated memory is still 56.6 MB. Free memory was 33.0 MB in the beginning and 30.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 15:07:46,911 INFO L168 Benchmark]: RCFGBuilder took 10490.17 ms. Allocated memory is still 56.6 MB. Free memory was 30.9 MB in the beginning and 35.2 MB in the end (delta: -4.3 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2020-11-29 15:07:46,912 INFO L168 Benchmark]: TraceAbstraction took 45006.02 ms. Allocated memory is still 56.6 MB. Free memory was 34.6 MB in the beginning and 35.4 MB in the end (delta: -795.6 kB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2020-11-29 15:07:46,912 INFO L168 Benchmark]: Witness Printer took 99.09 ms. Allocated memory is still 56.6 MB. Free memory was 35.4 MB in the beginning and 28.7 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 15:07:46,915 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 41.9 MB. Free memory is still 21.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 456.49 ms. Allocated memory is still 56.6 MB. Free memory was 33.0 MB in the beginning and 35.2 MB in the end (delta: -2.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.72 ms. Allocated memory is still 56.6 MB. Free memory was 35.0 MB in the beginning and 33.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.00 ms. Allocated memory is still 56.6 MB. Free memory was 33.0 MB in the beginning and 30.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 10490.17 ms. Allocated memory is still 56.6 MB. Free memory was 30.9 MB in the beginning and 35.2 MB in the end (delta: -4.3 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 45006.02 ms. Allocated memory is still 56.6 MB. Free memory was 34.6 MB in the beginning and 35.4 MB in the end (delta: -795.6 kB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. * Witness Printer took 99.09 ms. Allocated memory is still 56.6 MB. Free memory was 35.4 MB in the beginning and 28.7 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 113]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 99]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 38]: Loop Invariant [2020-11-29 15:07:46,926 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:07:46,927 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,927 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,927 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,927 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,928 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,928 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,928 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:07:46,929 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,929 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,929 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,929 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,930 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,930 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && one_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0))) && x == ~Pluszero~LONGDOUBLE()) && \result == ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)), ~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 43]: Loop Invariant [2020-11-29 15:07:46,930 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:07:46,931 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,931 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,931 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,931 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,932 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,932 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 15:07:46,932 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,933 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,933 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,933 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 15:07:46,933 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && one_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0))) && huge_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && x == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 86]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 44.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 37.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 102 SDtfs, 91 SDslu, 191 SDs, 0 SdLazy, 57 SolverSat, 5 SolverUnsat, 16 SolverUnknown, 0 SolverNotchecked, 36.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 8 NumberOfFragments, 48 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 90 ConstructedInterpolants, 2 QuantifiedInterpolants, 9500 SizeOfPredicates, 19 NumberOfNonLiveVariables, 313 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...