./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c -s /tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/bin/uautomizer --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 7498db39da300a600c956afc9ee769ef7c520660 ................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c -s /tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/bin/uautomizer --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 7498db39da300a600c956afc9ee769ef7c520660 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:17:33,791 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:17:33,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:17:33,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:17:33,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:17:33,863 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:17:33,865 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:17:33,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:17:33,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:17:33,871 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:17:33,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:17:33,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:17:33,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:17:33,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:17:33,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:17:33,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:17:33,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:17:33,880 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:17:33,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:17:33,885 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:17:33,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:17:33,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:17:33,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:17:33,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:17:33,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:17:33,896 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:17:33,896 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:17:33,897 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:17:33,898 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:17:33,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:17:33,900 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:17:33,901 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:17:33,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:17:33,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:17:33,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:17:33,908 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:17:33,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:17:33,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:17:33,909 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:17:33,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:17:33,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:17:33,916 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:17:33,959 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:17:33,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:17:33,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:17:33,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:17:33,961 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:17:33,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:17:33,961 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:17:33,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:17:33,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:17:33,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:17:33,974 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:17:33,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:17:33,974 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:17:33,974 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:17:33,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:17:33,975 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:17:33,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:17:33,975 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:17:33,975 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:17:33,976 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:17:33,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:17:33,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:17:33,976 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:17:33,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:17:33,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:17:33,977 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:17:33,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:17:33,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:17:33,978 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:17:33,978 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:/tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7498db39da300a600c956afc9ee769ef7c520660 [2020-11-28 03:17:34,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:17:34,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:17:34,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:17:34,305 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:17:34,306 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:17:34,307 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2020-11-28 03:17:34,383 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/bin/uautomizer/data/fef9de616/ce245df15cfc4fa1a4279bbefe5150e9/FLAGd3e749b75 [2020-11-28 03:17:34,977 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:17:34,977 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2020-11-28 03:17:34,993 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/bin/uautomizer/data/fef9de616/ce245df15cfc4fa1a4279bbefe5150e9/FLAGd3e749b75 [2020-11-28 03:17:35,370 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/bin/uautomizer/data/fef9de616/ce245df15cfc4fa1a4279bbefe5150e9 [2020-11-28 03:17:35,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:17:35,375 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:17:35,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:17:35,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:17:35,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:17:35,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:17:35" (1/1) ... [2020-11-28 03:17:35,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@316906f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:35, skipping insertion in model container [2020-11-28 03:17:35,386 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:17:35" (1/1) ... [2020-11-28 03:17:35,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:17:35,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:17:35,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:17:35,618 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:17:35,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:17:35,660 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:17:35,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:35 WrapperNode [2020-11-28 03:17:35,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:17:35,662 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:17:35,662 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:17:35,662 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:17:35,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:35" (1/1) ... [2020-11-28 03:17:35,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:35" (1/1) ... [2020-11-28 03:17:35,704 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:17:35,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:17:35,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:17:35,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:17:35,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:35" (1/1) ... [2020-11-28 03:17:35,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:35" (1/1) ... [2020-11-28 03:17:35,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:35" (1/1) ... [2020-11-28 03:17:35,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:35" (1/1) ... [2020-11-28 03:17:35,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:35" (1/1) ... [2020-11-28 03:17:35,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:35" (1/1) ... [2020-11-28 03:17:35,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:35" (1/1) ... [2020-11-28 03:17:35,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:17:35,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:17:35,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:17:35,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:17:35,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/bin/uautomizer/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 [2020-11-28 03:17:35,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:17:35,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:17:35,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 03:17:35,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:17:35,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:17:35,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:17:35,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:17:36,240 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:17:36,240 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-28 03:17:36,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:36 BoogieIcfgContainer [2020-11-28 03:17:36,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:17:36,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:17:36,244 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:17:36,248 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:17:36,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:17:35" (1/3) ... [2020-11-28 03:17:36,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@506ee588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:17:36, skipping insertion in model container [2020-11-28 03:17:36,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:35" (2/3) ... [2020-11-28 03:17:36,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@506ee588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:17:36, skipping insertion in model container [2020-11-28 03:17:36,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:36" (3/3) ... [2020-11-28 03:17:36,252 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2020-11-28 03:17:36,263 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:17:36,268 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:17:36,282 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:17:36,308 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:17:36,309 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:17:36,309 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:17:36,309 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:17:36,309 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:17:36,309 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:17:36,310 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:17:36,310 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:17:36,324 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-11-28 03:17:36,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:17:36,330 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:17:36,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:36,331 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:17:36,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:36,338 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2020-11-28 03:17:36,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:36,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647583036] [2020-11-28 03:17:36,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:36,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:36,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647583036] [2020-11-28 03:17:36,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:17:36,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:17:36,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000070689] [2020-11-28 03:17:36,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:17:36,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:17:36,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:17:36,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:17:36,494 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-11-28 03:17:36,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:17:36,514 INFO L93 Difference]: Finished difference Result 55 states and 85 transitions. [2020-11-28 03:17:36,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:17:36,516 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-28 03:17:36,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:17:36,525 INFO L225 Difference]: With dead ends: 55 [2020-11-28 03:17:36,526 INFO L226 Difference]: Without dead ends: 25 [2020-11-28 03:17:36,529 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 [2020-11-28 03:17:36,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-28 03:17:36,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-28 03:17:36,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-28 03:17:36,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2020-11-28 03:17:36,565 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2020-11-28 03:17:36,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:17:36,565 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2020-11-28 03:17:36,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:17:36,566 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-11-28 03:17:36,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:17:36,567 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:17:36,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:36,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:17:36,568 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:17:36,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:36,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2020-11-28 03:17:36,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:36,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146419209] [2020-11-28 03:17:36,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:36,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:36,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146419209] [2020-11-28 03:17:36,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:17:36,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:17:36,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675540511] [2020-11-28 03:17:36,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:17:36,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:17:36,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:17:36,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:17:36,686 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2020-11-28 03:17:36,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:17:36,785 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2020-11-28 03:17:36,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:17:36,786 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 03:17:36,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:17:36,787 INFO L225 Difference]: With dead ends: 41 [2020-11-28 03:17:36,787 INFO L226 Difference]: Without dead ends: 36 [2020-11-28 03:17:36,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:17:36,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-28 03:17:36,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2020-11-28 03:17:36,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 03:17:36,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-28 03:17:36,795 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2020-11-28 03:17:36,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:17:36,795 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-28 03:17:36,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:17:36,795 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-28 03:17:36,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:17:36,796 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:17:36,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:36,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:17:36,797 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:17:36,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:36,798 INFO L82 PathProgramCache]: Analyzing trace with hash 502183504, now seen corresponding path program 1 times [2020-11-28 03:17:36,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:36,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905222822] [2020-11-28 03:17:36,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:36,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:36,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:36,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905222822] [2020-11-28 03:17:36,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:17:36,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:17:36,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426047208] [2020-11-28 03:17:36,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:17:36,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:17:36,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:17:36,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:17:36,891 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-11-28 03:17:36,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:17:36,958 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-11-28 03:17:36,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:17:36,958 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-28 03:17:36,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:17:36,959 INFO L225 Difference]: With dead ends: 43 [2020-11-28 03:17:36,960 INFO L226 Difference]: Without dead ends: 38 [2020-11-28 03:17:36,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:17:36,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-28 03:17:36,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-11-28 03:17:36,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 03:17:36,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-28 03:17:36,966 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 12 [2020-11-28 03:17:36,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:17:36,966 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-28 03:17:36,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:17:36,966 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-28 03:17:36,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:17:36,967 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:17:36,967 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:36,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:17:36,968 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:17:36,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:36,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1951251627, now seen corresponding path program 1 times [2020-11-28 03:17:36,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:36,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262523216] [2020-11-28 03:17:36,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:37,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:37,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:37,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262523216] [2020-11-28 03:17:37,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:17:37,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:17:37,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044464131] [2020-11-28 03:17:37,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:17:37,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:17:37,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:17:37,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:17:37,073 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-11-28 03:17:37,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:17:37,173 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2020-11-28 03:17:37,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:17:37,176 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-28 03:17:37,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:17:37,177 INFO L225 Difference]: With dead ends: 45 [2020-11-28 03:17:37,177 INFO L226 Difference]: Without dead ends: 40 [2020-11-28 03:17:37,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:17:37,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-28 03:17:37,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 27. [2020-11-28 03:17:37,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 03:17:37,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-28 03:17:37,188 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 13 [2020-11-28 03:17:37,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:17:37,189 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-28 03:17:37,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:17:37,189 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-28 03:17:37,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:17:37,190 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:17:37,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:37,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:17:37,191 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:17:37,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:37,192 INFO L82 PathProgramCache]: Analyzing trace with hash -555778251, now seen corresponding path program 1 times [2020-11-28 03:17:37,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:37,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955993462] [2020-11-28 03:17:37,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:37,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:37,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:37,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955993462] [2020-11-28 03:17:37,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:17:37,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:17:37,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710690074] [2020-11-28 03:17:37,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:17:37,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:17:37,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:17:37,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:17:37,280 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-11-28 03:17:37,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:17:37,331 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-11-28 03:17:37,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:17:37,332 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-28 03:17:37,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:17:37,333 INFO L225 Difference]: With dead ends: 43 [2020-11-28 03:17:37,333 INFO L226 Difference]: Without dead ends: 38 [2020-11-28 03:17:37,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:17:37,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-28 03:17:37,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-11-28 03:17:37,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 03:17:37,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-28 03:17:37,339 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2020-11-28 03:17:37,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:17:37,339 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-28 03:17:37,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:17:37,340 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-28 03:17:37,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:17:37,340 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:17:37,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:37,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:17:37,341 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:17:37,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:37,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2020-11-28 03:17:37,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:37,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110131058] [2020-11-28 03:17:37,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:17:37,375 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:17:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:17:37,412 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:17:37,449 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:17:37,450 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:17:37,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:17:37,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:17:37 BoogieIcfgContainer [2020-11-28 03:17:37,482 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:17:37,482 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:17:37,482 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:17:37,483 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:17:37,483 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:36" (3/4) ... [2020-11-28 03:17:37,487 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:17:37,487 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:17:37,489 INFO L168 Benchmark]: Toolchain (without parser) took 2113.01 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 53.9 MB in the beginning and 46.1 MB in the end (delta: 7.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:37,490 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 86.0 MB. Free memory was 42.7 MB in the beginning and 42.6 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:17:37,491 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.65 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 53.9 MB in the beginning and 81.1 MB in the end (delta: -27.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:37,492 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.33 ms. Allocated memory is still 104.9 MB. Free memory was 81.1 MB in the beginning and 79.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:37,492 INFO L168 Benchmark]: Boogie Preprocessor took 29.83 ms. Allocated memory is still 104.9 MB. Free memory was 79.6 MB in the beginning and 78.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:37,493 INFO L168 Benchmark]: RCFGBuilder took 506.83 ms. Allocated memory is still 104.9 MB. Free memory was 78.1 MB in the beginning and 60.2 MB in the end (delta: 17.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:37,494 INFO L168 Benchmark]: TraceAbstraction took 1237.97 ms. Allocated memory is still 104.9 MB. Free memory was 59.8 MB in the beginning and 46.1 MB in the end (delta: 13.7 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:37,494 INFO L168 Benchmark]: Witness Printer took 4.44 ms. Allocated memory is still 104.9 MB. Free memory is still 46.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:17:37,499 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 86.0 MB. Free memory was 42.7 MB in the beginning and 42.6 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 282.65 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 53.9 MB in the beginning and 81.1 MB in the end (delta: -27.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.33 ms. Allocated memory is still 104.9 MB. Free memory was 81.1 MB in the beginning and 79.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.83 ms. Allocated memory is still 104.9 MB. Free memory was 79.6 MB in the beginning and 78.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 506.83 ms. Allocated memory is still 104.9 MB. Free memory was 78.1 MB in the beginning and 60.2 MB in the end (delta: 17.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1237.97 ms. Allocated memory is still 104.9 MB. Free memory was 59.8 MB in the beginning and 46.1 MB in the end (delta: 13.7 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. * Witness Printer took 4.44 ms. Allocated memory is still 104.9 MB. Free memory is still 46.1 MB. 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 56, overapproximation of someBinaryArithmeticFLOAToperation at line 62. Possible FailurePath: [L62] float x = 0.0f / 0.0f; [L63] float y = 0.0f / 0.0f; [L22] __uint32_t w; [L25] ieee_float_shape_type gf_u; [L26] gf_u.value = (x) [L27] EXPR gf_u.word [L27] (w) = gf_u.word [L30] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L32-L33] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L35-L36] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L38] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L41] return 0; [L45] COND TRUE __fpclassify_float(x) == 0 [L46] return y; [L64] float res = fmax_float(x, y); [L56] return x != x; [L66] COND TRUE !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_1250.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 206 SDtfs, 44 SDslu, 238 SDs, 0 SdLazy, 84 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 5 MinimizatonAttempts, 44 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 799 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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-a4ecdab [2020-11-28 03:17:40,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:17:40,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:17:40,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:17:40,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:17:40,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:17:40,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:17:40,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:17:40,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:17:40,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:17:40,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:17:40,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:17:40,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:17:40,454 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:17:40,456 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:17:40,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:17:40,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:17:40,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:17:40,468 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:17:40,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:17:40,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:17:40,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:17:40,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:17:40,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:17:40,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:17:40,495 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:17:40,496 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:17:40,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:17:40,498 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:17:40,499 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:17:40,499 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:17:40,500 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:17:40,501 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:17:40,502 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:17:40,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:17:40,504 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:17:40,504 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:17:40,505 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:17:40,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:17:40,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:17:40,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:17:40,508 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-28 03:17:40,536 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:17:40,536 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:17:40,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:17:40,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:17:40,538 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:17:40,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:17:40,539 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:17:40,539 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:17:40,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:17:40,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:17:40,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:17:40,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:17:40,540 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 03:17:40,540 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 03:17:40,540 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:17:40,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:17:40,541 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:17:40,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:17:40,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:17:40,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:17:40,542 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:17:40,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:17:40,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:17:40,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:17:40,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:17:40,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:17:40,543 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-28 03:17:40,543 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 03:17:40,544 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:17:40,544 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:17:40,544 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 03:17:40,544 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:/tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7498db39da300a600c956afc9ee769ef7c520660 [2020-11-28 03:17:41,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:17:41,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:17:41,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:17:41,033 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:17:41,034 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:17:41,035 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2020-11-28 03:17:41,116 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/bin/uautomizer/data/cef67db7c/374ca80146534a5ebcbb6214631df7e8/FLAG67e482b0c [2020-11-28 03:17:41,666 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:17:41,666 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2020-11-28 03:17:41,686 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/bin/uautomizer/data/cef67db7c/374ca80146534a5ebcbb6214631df7e8/FLAG67e482b0c [2020-11-28 03:17:42,049 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/bin/uautomizer/data/cef67db7c/374ca80146534a5ebcbb6214631df7e8 [2020-11-28 03:17:42,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:17:42,064 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:17:42,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:17:42,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:17:42,081 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:17:42,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:17:42" (1/1) ... [2020-11-28 03:17:42,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@281d3086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:42, skipping insertion in model container [2020-11-28 03:17:42,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:17:42" (1/1) ... [2020-11-28 03:17:42,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:17:42,116 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:17:42,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:17:42,364 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:17:42,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:17:42,413 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:17:42,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:42 WrapperNode [2020-11-28 03:17:42,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:17:42,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:17:42,415 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:17:42,416 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:17:42,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:42" (1/1) ... [2020-11-28 03:17:42,436 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:42" (1/1) ... [2020-11-28 03:17:42,463 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:17:42,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:17:42,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:17:42,465 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:17:42,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:42" (1/1) ... [2020-11-28 03:17:42,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:42" (1/1) ... [2020-11-28 03:17:42,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:42" (1/1) ... [2020-11-28 03:17:42,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:42" (1/1) ... [2020-11-28 03:17:42,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:42" (1/1) ... [2020-11-28 03:17:42,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:42" (1/1) ... [2020-11-28 03:17:42,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:42" (1/1) ... [2020-11-28 03:17:42,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:17:42,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:17:42,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:17:42,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:17:42,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/bin/uautomizer/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 [2020-11-28 03:17:42,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 03:17:42,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:17:42,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 03:17:42,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:17:42,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:17:42,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-28 03:17:42,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:17:43,148 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:17:43,148 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-28 03:17:43,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:43 BoogieIcfgContainer [2020-11-28 03:17:43,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:17:43,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:17:43,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:17:43,156 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:17:43,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:17:42" (1/3) ... [2020-11-28 03:17:43,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf36f87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:17:43, skipping insertion in model container [2020-11-28 03:17:43,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:42" (2/3) ... [2020-11-28 03:17:43,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf36f87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:17:43, skipping insertion in model container [2020-11-28 03:17:43,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:43" (3/3) ... [2020-11-28 03:17:43,160 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2020-11-28 03:17:43,173 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:17:43,178 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:17:43,192 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:17:43,221 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:17:43,221 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:17:43,221 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:17:43,222 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:17:43,222 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:17:43,222 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:17:43,222 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:17:43,222 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:17:43,237 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-11-28 03:17:43,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:17:43,244 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:17:43,244 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:43,245 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:17:43,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:43,252 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2020-11-28 03:17:43,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:17:43,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687894670] [2020-11-28 03:17:43,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/bin/uautomizer/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 [2020-11-28 03:17:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:43,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 03:17:43,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:17:43,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:43,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:17:43,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:43,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687894670] [2020-11-28 03:17:43,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:17:43,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 03:17:43,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376429702] [2020-11-28 03:17:43,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:17:43,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:17:43,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:17:43,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:17:43,490 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-11-28 03:17:43,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:17:43,511 INFO L93 Difference]: Finished difference Result 55 states and 85 transitions. [2020-11-28 03:17:43,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:17:43,513 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-28 03:17:43,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:17:43,523 INFO L225 Difference]: With dead ends: 55 [2020-11-28 03:17:43,524 INFO L226 Difference]: Without dead ends: 25 [2020-11-28 03:17:43,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:17:43,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-28 03:17:43,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-28 03:17:43,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-28 03:17:43,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2020-11-28 03:17:43,566 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2020-11-28 03:17:43,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:17:43,566 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2020-11-28 03:17:43,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:17:43,567 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-11-28 03:17:43,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:17:43,568 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:17:43,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:43,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 03:17:43,786 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:17:43,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:43,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2020-11-28 03:17:43,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:17:43,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [72106769] [2020-11-28 03:17:43,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/bin/uautomizer/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 [2020-11-28 03:17:43,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:43,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 03:17:43,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:17:43,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:43,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:17:43,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:43,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [72106769] [2020-11-28 03:17:43,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:17:43,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-28 03:17:43,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320250079] [2020-11-28 03:17:43,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:17:43,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:17:43,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:17:43,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:17:43,997 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 6 states. [2020-11-28 03:17:44,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:17:44,141 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2020-11-28 03:17:44,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:17:44,142 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-28 03:17:44,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:17:44,143 INFO L225 Difference]: With dead ends: 52 [2020-11-28 03:17:44,143 INFO L226 Difference]: Without dead ends: 47 [2020-11-28 03:17:44,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:17:44,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-28 03:17:44,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2020-11-28 03:17:44,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 03:17:44,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-28 03:17:44,153 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2020-11-28 03:17:44,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:17:44,154 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-28 03:17:44,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:17:44,154 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-28 03:17:44,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:17:44,155 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:17:44,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:44,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 03:17:44,370 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:17:44,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:44,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2020-11-28 03:17:44,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:17:44,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116922510] [2020-11-28 03:17:44,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/bin/uautomizer/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 [2020-11-28 03:17:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:44,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:17:44,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:17:44,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:44,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:17:44,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:44,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116922510] [2020-11-28 03:17:44,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:17:44,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-28 03:17:44,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171220600] [2020-11-28 03:17:44,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 03:17:44,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:17:44,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 03:17:44,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:17:44,785 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 10 states. [2020-11-28 03:17:45,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:17:45,224 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2020-11-28 03:17:45,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:17:45,227 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-11-28 03:17:45,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:17:45,228 INFO L225 Difference]: With dead ends: 36 [2020-11-28 03:17:45,228 INFO L226 Difference]: Without dead ends: 27 [2020-11-28 03:17:45,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-28 03:17:45,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-28 03:17:45,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-11-28 03:17:45,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-28 03:17:45,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2020-11-28 03:17:45,242 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2020-11-28 03:17:45,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:17:45,244 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2020-11-28 03:17:45,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 03:17:45,245 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-11-28 03:17:45,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:17:45,247 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:17:45,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:45,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 03:17:45,468 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:17:45,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:45,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2020-11-28 03:17:45,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:17:45,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [563987446] [2020-11-28 03:17:45,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/bin/uautomizer/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 [2020-11-28 03:17:45,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:45,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 03:17:45,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:17:45,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:45,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:17:45,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:45,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [563987446] [2020-11-28 03:17:45,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:17:45,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-28 03:17:45,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615508865] [2020-11-28 03:17:45,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:17:45,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:17:45,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:17:45,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:17:45,642 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 6 states. [2020-11-28 03:17:45,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:17:45,797 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-11-28 03:17:45,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:17:45,800 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-28 03:17:45,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:17:45,801 INFO L225 Difference]: With dead ends: 52 [2020-11-28 03:17:45,801 INFO L226 Difference]: Without dead ends: 47 [2020-11-28 03:17:45,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:17:45,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-28 03:17:45,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2020-11-28 03:17:45,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 03:17:45,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-11-28 03:17:45,809 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2020-11-28 03:17:45,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:17:45,809 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-28 03:17:45,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:17:45,813 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2020-11-28 03:17:45,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:17:45,814 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:17:45,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:46,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-28 03:17:46,033 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:17:46,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:46,034 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2020-11-28 03:17:46,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:17:46,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [230144115] [2020-11-28 03:17:46,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-28 03:17:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:46,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 03:17:46,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:17:46,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:46,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:17:46,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:46,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [230144115] [2020-11-28 03:17:46,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:17:46,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2020-11-28 03:17:46,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607161383] [2020-11-28 03:17:46,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-28 03:17:46,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:17:46,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-28 03:17:46,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:17:46,467 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 12 states. [2020-11-28 03:17:46,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:17:46,896 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2020-11-28 03:17:46,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:17:46,897 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-11-28 03:17:46,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:17:46,898 INFO L225 Difference]: With dead ends: 32 [2020-11-28 03:17:46,898 INFO L226 Difference]: Without dead ends: 23 [2020-11-28 03:17:46,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-11-28 03:17:46,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-28 03:17:46,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-28 03:17:46,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-28 03:17:46,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-11-28 03:17:46,903 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2020-11-28 03:17:46,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:17:46,904 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-11-28 03:17:46,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-28 03:17:46,904 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-11-28 03:17:46,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 03:17:46,905 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:17:46,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:47,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-28 03:17:47,106 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:17:47,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:47,106 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2020-11-28 03:17:47,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:17:47,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [483627111] [2020-11-28 03:17:47,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-28 03:17:47,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:47,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:17:47,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:17:47,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:47,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:17:47,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:47,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [483627111] [2020-11-28 03:17:47,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:17:47,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-28 03:17:47,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702437993] [2020-11-28 03:17:47,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 03:17:47,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:17:47,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 03:17:47,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:17:47,404 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 10 states. [2020-11-28 03:17:47,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:17:47,679 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2020-11-28 03:17:47,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:17:47,679 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-11-28 03:17:47,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:17:47,679 INFO L225 Difference]: With dead ends: 23 [2020-11-28 03:17:47,680 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:17:47,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-28 03:17:47,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:17:47,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:17:47,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:17:47,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:17:47,681 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-11-28 03:17:47,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:17:47,681 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:17:47,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 03:17:47,684 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:17:47,684 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:17:47,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-28 03:17:47,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:17:48,129 INFO L270 CegarLoopResult]: At program point L56(line 56) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_fmax_float_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y))) [2020-11-28 03:17:48,129 INFO L274 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-11-28 03:17:48,129 INFO L274 CegarLoopResult]: For program point L52-2(line 52) no Hoare annotation was computed. [2020-11-28 03:17:48,130 INFO L270 CegarLoopResult]: At program point L52-3(lines 44 53) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_fmax_float_#res|)) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y))) [2020-11-28 03:17:48,130 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-28 03:17:48,130 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-28 03:17:48,130 INFO L274 CegarLoopResult]: For program point L32(lines 32 41) no Hoare annotation was computed. [2020-11-28 03:17:48,130 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:17:48,130 INFO L274 CegarLoopResult]: For program point L32-1(lines 32 41) no Hoare annotation was computed. [2020-11-28 03:17:48,130 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:17:48,130 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:17:48,130 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 03:17:48,130 INFO L274 CegarLoopResult]: For program point L24-1(lines 24 28) no Hoare annotation was computed. [2020-11-28 03:17:48,131 INFO L270 CegarLoopResult]: At program point L24-2(lines 24 28) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y))) [2020-11-28 03:17:48,131 INFO L274 CegarLoopResult]: For program point L24-3(lines 21 42) no Hoare annotation was computed. [2020-11-28 03:17:48,131 INFO L274 CegarLoopResult]: For program point L24-5(lines 24 28) no Hoare annotation was computed. [2020-11-28 03:17:48,131 INFO L270 CegarLoopResult]: At program point L24-6(lines 24 28) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y))) [2020-11-28 03:17:48,131 INFO L274 CegarLoopResult]: For program point L24-7(lines 21 42) no Hoare annotation was computed. [2020-11-28 03:17:48,131 INFO L274 CegarLoopResult]: For program point L49(lines 49 51) no Hoare annotation was computed. [2020-11-28 03:17:48,131 INFO L274 CegarLoopResult]: For program point L45(lines 45 47) no Hoare annotation was computed. [2020-11-28 03:17:48,131 INFO L270 CegarLoopResult]: At program point L41(lines 21 42) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y))) [2020-11-28 03:17:48,131 INFO L270 CegarLoopResult]: At program point L41-1(lines 21 42) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)))) (or (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) .cse0) (and (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) .cse0))) [2020-11-28 03:17:48,132 INFO L274 CegarLoopResult]: For program point L66(lines 66 69) no Hoare annotation was computed. [2020-11-28 03:17:48,132 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:17:48,132 INFO L277 CegarLoopResult]: At program point L71(lines 58 72) the Hoare annotation is: true [2020-11-28 03:17:48,132 INFO L274 CegarLoopResult]: For program point L38(lines 38 41) no Hoare annotation was computed. [2020-11-28 03:17:48,132 INFO L274 CegarLoopResult]: For program point L38-1(lines 38 41) no Hoare annotation was computed. [2020-11-28 03:17:48,132 INFO L274 CegarLoopResult]: For program point L35(lines 35 41) no Hoare annotation was computed. [2020-11-28 03:17:48,132 INFO L274 CegarLoopResult]: For program point L35-1(lines 35 41) no Hoare annotation was computed. [2020-11-28 03:17:48,145 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 03:17:48,148 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 03:17:48,153 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 03:17:48,154 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 03:17:48,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:17:48 BoogieIcfgContainer [2020-11-28 03:17:48,157 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:17:48,166 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:17:48,166 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:17:48,167 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:17:48,167 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:43" (3/4) ... [2020-11-28 03:17:48,170 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:17:48,188 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-11-28 03:17:48,188 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 03:17:48,189 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 03:17:48,189 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:17:48,220 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && !~fp.eq~FLOAT(y, y) [2020-11-28 03:17:48,221 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y) [2020-11-28 03:17:48,222 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y)) || (!(0bv32 == \result) && !~fp.eq~FLOAT(y, y)) [2020-11-28 03:17:48,259 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_85a00b29-5765-4c00-9f92-59d43efa8476/bin/uautomizer/witness.graphml [2020-11-28 03:17:48,260 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:17:48,262 INFO L168 Benchmark]: Toolchain (without parser) took 6196.53 ms. Allocated memory was 73.4 MB in the beginning and 100.7 MB in the end (delta: 27.3 MB). Free memory was 58.6 MB in the beginning and 77.8 MB in the end (delta: -19.2 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:48,262 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 73.4 MB. Free memory was 56.4 MB in the beginning and 56.4 MB in the end (delta: 59.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:17:48,263 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.47 ms. Allocated memory is still 73.4 MB. Free memory was 58.4 MB in the beginning and 47.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:48,264 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.33 ms. Allocated memory is still 73.4 MB. Free memory was 47.9 MB in the beginning and 46.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:48,264 INFO L168 Benchmark]: Boogie Preprocessor took 66.59 ms. Allocated memory is still 73.4 MB. Free memory was 46.1 MB in the beginning and 44.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:48,264 INFO L168 Benchmark]: RCFGBuilder took 619.05 ms. Allocated memory is still 73.4 MB. Free memory was 44.7 MB in the beginning and 51.6 MB in the end (delta: -6.9 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:48,265 INFO L168 Benchmark]: TraceAbstraction took 5005.07 ms. Allocated memory was 73.4 MB in the beginning and 100.7 MB in the end (delta: 27.3 MB). Free memory was 51.3 MB in the beginning and 80.9 MB in the end (delta: -29.6 MB). Peak memory consumption was 45.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:48,266 INFO L168 Benchmark]: Witness Printer took 93.77 ms. Allocated memory is still 100.7 MB. Free memory was 80.9 MB in the beginning and 77.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:48,268 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 73.4 MB. Free memory was 56.4 MB in the beginning and 56.4 MB in the end (delta: 59.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 338.47 ms. Allocated memory is still 73.4 MB. Free memory was 58.4 MB in the beginning and 47.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.33 ms. Allocated memory is still 73.4 MB. Free memory was 47.9 MB in the beginning and 46.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.59 ms. Allocated memory is still 73.4 MB. Free memory was 46.1 MB in the beginning and 44.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 619.05 ms. Allocated memory is still 73.4 MB. Free memory was 44.7 MB in the beginning and 51.6 MB in the end (delta: -6.9 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5005.07 ms. Allocated memory was 73.4 MB in the beginning and 100.7 MB in the end (delta: 27.3 MB). Free memory was 51.3 MB in the beginning and 80.9 MB in the end (delta: -29.6 MB). Peak memory consumption was 45.0 MB. Max. memory is 16.1 GB. * Witness Printer took 93.77 ms. Allocated memory is still 100.7 MB. Free memory was 80.9 MB in the beginning and 77.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 44]: Loop Invariant [2020-11-28 03:17:48,281 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 03:17:48,281 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 56]: Loop Invariant [2020-11-28 03:17:48,283 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 03:17:48,283 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (!~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y)) || (!(0bv32 == \result) && !~fp.eq~FLOAT(y, y)) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 182 SDtfs, 117 SDslu, 549 SDs, 0 SdLazy, 138 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 6 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 19 NumberOfFragments, 74 HoareAnnotationTreeSize, 7 FomulaSimplifications, 231 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 164 ConstructedInterpolants, 36 QuantifiedInterpolants, 8446 SizeOfPredicates, 32 NumberOfNonLiveVariables, 375 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...