./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f441bd4a1f5705911b7315c074b39e665542818e ......................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f441bd4a1f5705911b7315c074b39e665542818e ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 10:33:29,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 10:33:29,436 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 10:33:29,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 10:33:29,453 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 10:33:29,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 10:33:29,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 10:33:29,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 10:33:29,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 10:33:29,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 10:33:29,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 10:33:29,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 10:33:29,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 10:33:29,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 10:33:29,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 10:33:29,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 10:33:29,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 10:33:29,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 10:33:29,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 10:33:29,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 10:33:29,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 10:33:29,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 10:33:29,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 10:33:29,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 10:33:29,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 10:33:29,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 10:33:29,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 10:33:29,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 10:33:29,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 10:33:29,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 10:33:29,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 10:33:29,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 10:33:29,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 10:33:29,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 10:33:29,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 10:33:29,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 10:33:29,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 10:33:29,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 10:33:29,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 10:33:29,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 10:33:29,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 10:33:29,496 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 10:33:29,511 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 10:33:29,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 10:33:29,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 10:33:29,513 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 10:33:29,513 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 10:33:29,513 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 10:33:29,513 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 10:33:29,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 10:33:29,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 10:33:29,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 10:33:29,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 10:33:29,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 10:33:29,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 10:33:29,515 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 10:33:29,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 10:33:29,516 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 10:33:29,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 10:33:29,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 10:33:29,517 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 10:33:29,517 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 10:33:29,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 10:33:29,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 10:33:29,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 10:33:29,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 10:33:29,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 10:33:29,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 10:33:29,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 10:33:29,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 10:33:29,520 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/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(__VERIFIER_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 -> f441bd4a1f5705911b7315c074b39e665542818e [2019-11-20 10:33:29,695 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 10:33:29,708 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 10:33:29,711 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 10:33:29,713 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 10:33:29,713 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 10:33:29,714 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2019-11-20 10:33:29,775 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/bin/uautomizer/data/e470d6fc9/0b08b4ccbb164e8286c53866c263e7ef/FLAGd2b95da5f [2019-11-20 10:33:30,182 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 10:33:30,183 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2019-11-20 10:33:30,190 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/bin/uautomizer/data/e470d6fc9/0b08b4ccbb164e8286c53866c263e7ef/FLAGd2b95da5f [2019-11-20 10:33:30,597 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/bin/uautomizer/data/e470d6fc9/0b08b4ccbb164e8286c53866c263e7ef [2019-11-20 10:33:30,600 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 10:33:30,602 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 10:33:30,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 10:33:30,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 10:33:30,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 10:33:30,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:33:30" (1/1) ... [2019-11-20 10:33:30,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a9d64dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:30, skipping insertion in model container [2019-11-20 10:33:30,611 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:33:30" (1/1) ... [2019-11-20 10:33:30,619 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 10:33:30,641 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 10:33:30,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:33:30,960 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 10:33:30,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:33:31,031 INFO L192 MainTranslator]: Completed translation [2019-11-20 10:33:31,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:31 WrapperNode [2019-11-20 10:33:31,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 10:33:31,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 10:33:31,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 10:33:31,034 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 10:33:31,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:31" (1/1) ... [2019-11-20 10:33:31,063 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:31" (1/1) ... [2019-11-20 10:33:31,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 10:33:31,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 10:33:31,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 10:33:31,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 10:33:31,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:31" (1/1) ... [2019-11-20 10:33:31,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:31" (1/1) ... [2019-11-20 10:33:31,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:31" (1/1) ... [2019-11-20 10:33:31,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:31" (1/1) ... [2019-11-20 10:33:31,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:31" (1/1) ... [2019-11-20 10:33:31,117 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:31" (1/1) ... [2019-11-20 10:33:31,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:31" (1/1) ... [2019-11-20 10:33:31,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 10:33:31,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 10:33:31,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 10:33:31,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 10:33:31,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/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 [2019-11-20 10:33:31,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-20 10:33:31,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 10:33:31,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 10:33:31,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 10:33:31,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 10:33:31,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 10:33:31,707 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 10:33:31,707 INFO L285 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-20 10:33:31,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:33:31 BoogieIcfgContainer [2019-11-20 10:33:31,709 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 10:33:31,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 10:33:31,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 10:33:31,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 10:33:31,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:33:30" (1/3) ... [2019-11-20 10:33:31,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae07061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:33:31, skipping insertion in model container [2019-11-20 10:33:31,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:31" (2/3) ... [2019-11-20 10:33:31,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae07061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:33:31, skipping insertion in model container [2019-11-20 10:33:31,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:33:31" (3/3) ... [2019-11-20 10:33:31,723 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a.c [2019-11-20 10:33:31,734 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 10:33:31,741 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 10:33:31,750 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 10:33:31,776 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 10:33:31,776 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 10:33:31,776 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 10:33:31,777 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 10:33:31,777 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 10:33:31,777 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 10:33:31,777 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 10:33:31,778 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 10:33:31,793 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-20 10:33:31,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 10:33:31,800 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:33:31,801 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:33:31,802 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:33:31,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:33:31,809 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-20 10:33:31,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:33:31,818 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456699248] [2019-11-20 10:33:31,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:33:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:33:31,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:33:31,939 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456699248] [2019-11-20 10:33:31,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:33:31,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 10:33:31,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323050066] [2019-11-20 10:33:31,945 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 10:33:31,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:33:31,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 10:33:31,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 10:33:31,958 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-20 10:33:31,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:33:31,976 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-20 10:33:31,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 10:33:31,978 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-20 10:33:31,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:33:31,987 INFO L225 Difference]: With dead ends: 62 [2019-11-20 10:33:31,987 INFO L226 Difference]: Without dead ends: 29 [2019-11-20 10:33:31,990 INFO L630 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 [2019-11-20 10:33:32,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-20 10:33:32,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-20 10:33:32,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-20 10:33:32,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-20 10:33:32,026 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-20 10:33:32,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:33:32,026 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-20 10:33:32,026 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 10:33:32,027 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-20 10:33:32,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 10:33:32,028 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:33:32,028 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:33:32,028 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:33:32,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:33:32,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-20 10:33:32,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:33:32,030 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172414364] [2019-11-20 10:33:32,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:33:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:33:32,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:33:32,116 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172414364] [2019-11-20 10:33:32,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:33:32,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 10:33:32,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443199432] [2019-11-20 10:33:32,118 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 10:33:32,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:33:32,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 10:33:32,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 10:33:32,119 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2019-11-20 10:33:32,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:33:32,226 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-11-20 10:33:32,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 10:33:32,227 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-20 10:33:32,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:33:32,229 INFO L225 Difference]: With dead ends: 53 [2019-11-20 10:33:32,229 INFO L226 Difference]: Without dead ends: 44 [2019-11-20 10:33:32,230 INFO L630 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 [2019-11-20 10:33:32,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-20 10:33:32,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2019-11-20 10:33:32,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-20 10:33:32,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-20 10:33:32,237 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-20 10:33:32,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:33:32,238 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-20 10:33:32,238 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 10:33:32,238 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-20 10:33:32,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-20 10:33:32,239 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:33:32,239 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:33:32,240 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:33:32,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:33:32,240 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2019-11-20 10:33:32,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:33:32,241 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296008671] [2019-11-20 10:33:32,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:33:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:33:32,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:33:32,313 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296008671] [2019-11-20 10:33:32,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:33:32,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 10:33:32,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231500007] [2019-11-20 10:33:32,314 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 10:33:32,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:33:32,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 10:33:32,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 10:33:32,315 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-11-20 10:33:32,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:33:32,384 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2019-11-20 10:33:32,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 10:33:32,385 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-20 10:33:32,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:33:32,386 INFO L225 Difference]: With dead ends: 55 [2019-11-20 10:33:32,386 INFO L226 Difference]: Without dead ends: 46 [2019-11-20 10:33:32,387 INFO L630 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 [2019-11-20 10:33:32,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-20 10:33:32,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2019-11-20 10:33:32,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-20 10:33:32,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-20 10:33:32,394 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2019-11-20 10:33:32,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:33:32,395 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-20 10:33:32,395 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 10:33:32,395 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-20 10:33:32,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-20 10:33:32,396 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:33:32,396 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:33:32,396 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:33:32,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:33:32,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-20 10:33:32,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:33:32,398 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190227601] [2019-11-20 10:33:32,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:33:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:33:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:33:32,493 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:33:32,494 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 10:33:32,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:33:32 BoogieIcfgContainer [2019-11-20 10:33:32,541 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 10:33:32,541 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 10:33:32,541 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 10:33:32,542 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 10:33:32,542 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:33:31" (3/4) ... [2019-11-20 10:33:32,547 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 10:33:32,547 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 10:33:32,551 INFO L168 Benchmark]: Toolchain (without parser) took 1947.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.3 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -136.0 MB). Peak memory consumption was 33.4 MB. Max. memory is 11.5 GB. [2019-11-20 10:33:32,552 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:33:32,553 INFO L168 Benchmark]: CACSL2BoogieTranslator took 429.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.3 MB). Free memory was 946.1 MB in the beginning and 1.2 GB in the end (delta: -214.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-20 10:33:32,554 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.98 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:33:32,555 INFO L168 Benchmark]: Boogie Preprocessor took 32.49 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:33:32,557 INFO L168 Benchmark]: RCFGBuilder took 585.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 30.3 MB). Peak memory consumption was 30.3 MB. Max. memory is 11.5 GB. [2019-11-20 10:33:32,559 INFO L168 Benchmark]: TraceAbstraction took 830.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 48.1 MB). Peak memory consumption was 48.1 MB. Max. memory is 11.5 GB. [2019-11-20 10:33:32,565 INFO L168 Benchmark]: Witness Printer took 6.53 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:33:32,573 INFO L335 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 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 429.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.3 MB). Free memory was 946.1 MB in the beginning and 1.2 GB in the end (delta: -214.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 56.98 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.49 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 585.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 30.3 MB). Peak memory consumption was 30.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 830.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 48.1 MB). Peak memory consumption was 48.1 MB. Max. memory is 11.5 GB. * Witness Printer took 6.53 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 79]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 78, overapproximation of someUnaryFLOAToperation at line 72. Possible FailurePath: [L72] float x = -0.0f; [L73] float y = 0.0f; [L20] __uint32_t w; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (w) = gf_u.word [L28] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L30-L31] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L33-L34] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L36] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L39] return 0; [L43] COND TRUE __fpclassify_float(x) == 0 [L44] return y; [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 135 SDtfs, 32 SDslu, 140 SDs, 0 SdLazy, 30 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 28 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 10:33:34,795 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-11-20 10:33:34,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 10:33:34,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 10:33:34,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 10:33:34,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 10:33:34,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 10:33:34,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 10:33:34,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 10:33:34,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 10:33:34,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 10:33:34,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 10:33:34,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 10:33:34,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 10:33:34,844 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 10:33:34,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 10:33:34,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 10:33:34,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 10:33:34,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 10:33:34,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 10:33:34,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 10:33:34,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 10:33:34,849 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 10:33:34,850 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 10:33:34,851 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 10:33:34,852 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 10:33:34,853 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 10:33:34,853 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 10:33:34,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 10:33:34,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 10:33:34,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 10:33:34,856 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-20 10:33:34,873 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 10:33:34,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 10:33:34,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 10:33:34,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 10:33:34,875 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 10:33:34,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 10:33:34,876 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 10:33:34,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 10:33:34,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 10:33:34,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 10:33:34,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 10:33:34,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 10:33:34,878 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 10:33:34,878 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 10:33:34,878 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 10:33:34,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 10:33:34,879 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 10:33:34,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 10:33:34,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 10:33:34,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 10:33:34,880 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 10:33:34,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 10:33:34,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 10:33:34,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 10:33:34,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 10:33:34,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 10:33:34,882 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 10:33:34,883 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 10:33:34,883 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 10:33:34,883 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 10:33:34,883 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/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(__VERIFIER_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 -> f441bd4a1f5705911b7315c074b39e665542818e [2019-11-20 10:33:35,254 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 10:33:35,274 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 10:33:35,279 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 10:33:35,282 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 10:33:35,282 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 10:33:35,284 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2019-11-20 10:33:35,353 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/bin/uautomizer/data/283bf050e/76c7593ef0ee4af8bda44726883e92b9/FLAGc99c565f3 [2019-11-20 10:33:35,874 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 10:33:35,875 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2019-11-20 10:33:35,884 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/bin/uautomizer/data/283bf050e/76c7593ef0ee4af8bda44726883e92b9/FLAGc99c565f3 [2019-11-20 10:33:36,261 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/bin/uautomizer/data/283bf050e/76c7593ef0ee4af8bda44726883e92b9 [2019-11-20 10:33:36,265 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 10:33:36,266 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 10:33:36,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 10:33:36,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 10:33:36,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 10:33:36,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:33:36" (1/1) ... [2019-11-20 10:33:36,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59ded627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:36, skipping insertion in model container [2019-11-20 10:33:36,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:33:36" (1/1) ... [2019-11-20 10:33:36,285 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 10:33:36,305 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 10:33:36,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:33:36,503 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 10:33:36,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:33:36,636 INFO L192 MainTranslator]: Completed translation [2019-11-20 10:33:36,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:36 WrapperNode [2019-11-20 10:33:36,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 10:33:36,638 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 10:33:36,638 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 10:33:36,638 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 10:33:36,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:36" (1/1) ... [2019-11-20 10:33:36,661 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:36" (1/1) ... [2019-11-20 10:33:36,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 10:33:36,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 10:33:36,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 10:33:36,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 10:33:36,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:36" (1/1) ... [2019-11-20 10:33:36,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:36" (1/1) ... [2019-11-20 10:33:36,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:36" (1/1) ... [2019-11-20 10:33:36,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:36" (1/1) ... [2019-11-20 10:33:36,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:36" (1/1) ... [2019-11-20 10:33:36,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:36" (1/1) ... [2019-11-20 10:33:36,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:36" (1/1) ... [2019-11-20 10:33:36,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 10:33:36,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 10:33:36,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 10:33:36,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 10:33:36,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/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 [2019-11-20 10:33:36,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-20 10:33:36,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 10:33:36,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 10:33:36,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-20 10:33:36,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 10:33:36,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 10:33:37,185 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 10:33:37,185 INFO L285 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-20 10:33:37,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:33:37 BoogieIcfgContainer [2019-11-20 10:33:37,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 10:33:37,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 10:33:37,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 10:33:37,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 10:33:37,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:33:36" (1/3) ... [2019-11-20 10:33:37,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b3852f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:33:37, skipping insertion in model container [2019-11-20 10:33:37,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:36" (2/3) ... [2019-11-20 10:33:37,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b3852f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:33:37, skipping insertion in model container [2019-11-20 10:33:37,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:33:37" (3/3) ... [2019-11-20 10:33:37,195 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a.c [2019-11-20 10:33:37,205 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 10:33:37,212 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 10:33:37,228 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 10:33:37,260 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 10:33:37,261 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 10:33:37,261 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 10:33:37,261 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 10:33:37,262 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 10:33:37,262 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 10:33:37,262 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 10:33:37,263 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 10:33:37,277 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-20 10:33:37,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 10:33:37,285 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:33:37,286 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:33:37,287 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:33:37,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:33:37,293 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-20 10:33:37,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:33:37,305 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [543839483] [2019-11-20 10:33:37,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/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 [2019-11-20 10:33:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:33:37,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-20 10:33:37,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:33:37,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:33:37,441 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 10:33:37,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:33:37,446 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [543839483] [2019-11-20 10:33:37,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:33:37,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 10:33:37,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424555997] [2019-11-20 10:33:37,452 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 10:33:37,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 10:33:37,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 10:33:37,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 10:33:37,469 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-20 10:33:37,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:33:37,487 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-20 10:33:37,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 10:33:37,489 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-20 10:33:37,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:33:37,499 INFO L225 Difference]: With dead ends: 62 [2019-11-20 10:33:37,499 INFO L226 Difference]: Without dead ends: 29 [2019-11-20 10:33:37,502 INFO L630 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 [2019-11-20 10:33:37,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-20 10:33:37,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-20 10:33:37,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-20 10:33:37,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-20 10:33:37,541 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-20 10:33:37,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:33:37,542 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-20 10:33:37,542 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 10:33:37,542 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-20 10:33:37,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 10:33:37,543 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:33:37,543 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:33:37,759 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-20 10:33:37,760 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:33:37,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:33:37,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-20 10:33:37,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:33:37,762 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [640001204] [2019-11-20 10:33:37,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/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 [2019-11-20 10:33:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:33:37,877 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 10:33:37,879 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:33:37,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:33:37,903 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 10:33:37,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:33:37,941 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [640001204] [2019-11-20 10:33:37,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:33:37,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-20 10:33:37,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184763384] [2019-11-20 10:33:37,943 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 10:33:37,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 10:33:37,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 10:33:37,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-20 10:33:37,944 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2019-11-20 10:33:38,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:33:38,064 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2019-11-20 10:33:38,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 10:33:38,067 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-20 10:33:38,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:33:38,069 INFO L225 Difference]: With dead ends: 68 [2019-11-20 10:33:38,069 INFO L226 Difference]: Without dead ends: 59 [2019-11-20 10:33:38,070 INFO L630 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 [2019-11-20 10:33:38,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-20 10:33:38,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2019-11-20 10:33:38,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-20 10:33:38,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-20 10:33:38,084 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-20 10:33:38,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:33:38,085 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-20 10:33:38,086 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 10:33:38,086 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-20 10:33:38,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-20 10:33:38,088 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:33:38,088 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:33:38,302 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-20 10:33:38,302 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:33:38,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:33:38,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-20 10:33:38,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:33:38,304 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1442213919] [2019-11-20 10:33:38,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/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 [2019-11-20 10:33:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:33:38,384 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 10:33:38,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:33:38,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:33:38,426 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 10:33:38,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:33:38,461 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1442213919] [2019-11-20 10:33:38,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:33:38,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-20 10:33:38,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041489752] [2019-11-20 10:33:38,462 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 10:33:38,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 10:33:38,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 10:33:38,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 10:33:38,464 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-11-20 10:33:38,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:33:38,562 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2019-11-20 10:33:38,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 10:33:38,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-20 10:33:38,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:33:38,566 INFO L225 Difference]: With dead ends: 52 [2019-11-20 10:33:38,566 INFO L226 Difference]: Without dead ends: 26 [2019-11-20 10:33:38,567 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 10:33:38,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-20 10:33:38,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-20 10:33:38,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-20 10:33:38,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2019-11-20 10:33:38,573 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2019-11-20 10:33:38,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:33:38,573 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2019-11-20 10:33:38,573 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 10:33:38,573 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2019-11-20 10:33:38,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-20 10:33:38,579 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:33:38,579 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:33:38,779 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-20 10:33:38,780 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:33:38,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:33:38,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2019-11-20 10:33:38,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:33:38,781 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237748095] [2019-11-20 10:33:38,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/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 [2019-11-20 10:33:38,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:33:38,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 10:33:38,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:33:38,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:33:38,902 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 10:33:38,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:33:38,924 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237748095] [2019-11-20 10:33:38,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:33:38,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-20 10:33:38,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519458177] [2019-11-20 10:33:38,926 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 10:33:38,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 10:33:38,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 10:33:38,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-20 10:33:38,927 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 6 states. [2019-11-20 10:33:39,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:33:39,022 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2019-11-20 10:33:39,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 10:33:39,024 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-20 10:33:39,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:33:39,025 INFO L225 Difference]: With dead ends: 61 [2019-11-20 10:33:39,025 INFO L226 Difference]: Without dead ends: 52 [2019-11-20 10:33:39,026 INFO L630 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 [2019-11-20 10:33:39,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-20 10:33:39,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2019-11-20 10:33:39,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-20 10:33:39,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2019-11-20 10:33:39,039 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2019-11-20 10:33:39,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:33:39,040 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2019-11-20 10:33:39,040 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 10:33:39,040 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2019-11-20 10:33:39,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-20 10:33:39,043 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:33:39,045 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:33:39,260 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-20 10:33:39,261 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:33:39,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:33:39,261 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2019-11-20 10:33:39,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:33:39,262 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1767396295] [2019-11-20 10:33:39,262 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/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 [2019-11-20 10:33:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:33:39,336 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 10:33:39,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:33:39,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:33:39,375 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 10:33:39,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:33:39,403 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1767396295] [2019-11-20 10:33:39,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:33:39,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-20 10:33:39,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957020991] [2019-11-20 10:33:39,404 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 10:33:39,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 10:33:39,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 10:33:39,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 10:33:39,405 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2019-11-20 10:33:39,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:33:39,425 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2019-11-20 10:33:39,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 10:33:39,426 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-11-20 10:33:39,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:33:39,427 INFO L225 Difference]: With dead ends: 38 [2019-11-20 10:33:39,427 INFO L226 Difference]: Without dead ends: 28 [2019-11-20 10:33:39,427 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 10:33:39,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-20 10:33:39,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-20 10:33:39,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-20 10:33:39,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-11-20 10:33:39,440 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2019-11-20 10:33:39,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:33:39,445 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-11-20 10:33:39,445 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 10:33:39,445 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-11-20 10:33:39,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-20 10:33:39,447 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:33:39,447 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:33:39,662 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-20 10:33:39,663 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:33:39,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:33:39,663 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2019-11-20 10:33:39,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:33:39,664 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410554510] [2019-11-20 10:33:39,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/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 [2019-11-20 10:33:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:33:39,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 10:33:39,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:33:39,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:33:39,805 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 10:33:39,807 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 10:33:39,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:33:39,878 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1410554510] [2019-11-20 10:33:39,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:33:39,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-11-20 10:33:39,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215721135] [2019-11-20 10:33:39,879 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-20 10:33:39,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 10:33:39,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 10:33:39,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-20 10:33:39,880 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 9 states. [2019-11-20 10:33:40,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:33:40,020 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2019-11-20 10:33:40,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 10:33:40,020 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2019-11-20 10:33:40,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:33:40,021 INFO L225 Difference]: With dead ends: 40 [2019-11-20 10:33:40,021 INFO L226 Difference]: Without dead ends: 37 [2019-11-20 10:33:40,022 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-11-20 10:33:40,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-20 10:33:40,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2019-11-20 10:33:40,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-20 10:33:40,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-11-20 10:33:40,027 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 18 [2019-11-20 10:33:40,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:33:40,028 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-11-20 10:33:40,028 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-20 10:33:40,028 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-11-20 10:33:40,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-20 10:33:40,029 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:33:40,029 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:33:40,230 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-20 10:33:40,230 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:33:40,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:33:40,231 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2019-11-20 10:33:40,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:33:40,232 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817557037] [2019-11-20 10:33:40,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-11-20 10:33:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:33:40,314 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 10:33:40,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:33:40,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:33:40,357 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 10:33:40,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:33:40,385 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [817557037] [2019-11-20 10:33:40,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:33:40,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-20 10:33:40,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027436531] [2019-11-20 10:33:40,386 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 10:33:40,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 10:33:40,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 10:33:40,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 10:33:40,387 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2019-11-20 10:33:40,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:33:40,449 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2019-11-20 10:33:40,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 10:33:40,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-11-20 10:33:40,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:33:40,451 INFO L225 Difference]: With dead ends: 43 [2019-11-20 10:33:40,452 INFO L226 Difference]: Without dead ends: 23 [2019-11-20 10:33:40,452 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-20 10:33:40,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-20 10:33:40,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-20 10:33:40,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-20 10:33:40,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2019-11-20 10:33:40,459 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 19 [2019-11-20 10:33:40,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:33:40,459 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2019-11-20 10:33:40,459 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 10:33:40,459 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2019-11-20 10:33:40,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 10:33:40,460 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:33:40,460 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:33:40,660 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-11-20 10:33:40,661 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:33:40,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:33:40,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2019-11-20 10:33:40,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:33:40,662 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [992255275] [2019-11-20 10:33:40,662 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-11-20 10:33:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:33:40,769 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-20 10:33:40,772 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:33:40,846 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 10:33:40,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:33:40,894 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 10:33:40,895 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 10:33:41,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:33:41,182 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [992255275] [2019-11-20 10:33:41,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:33:41,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 16 [2019-11-20 10:33:41,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896596881] [2019-11-20 10:33:41,183 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-20 10:33:41,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 10:33:41,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-20 10:33:41,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2019-11-20 10:33:41,185 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand 16 states. [2019-11-20 10:33:41,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:33:41,469 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2019-11-20 10:33:41,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 10:33:41,473 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 22 [2019-11-20 10:33:41,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:33:41,473 INFO L225 Difference]: With dead ends: 23 [2019-11-20 10:33:41,473 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 10:33:41,474 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2019-11-20 10:33:41,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 10:33:41,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 10:33:41,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 10:33:41,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 10:33:41,475 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2019-11-20 10:33:41,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:33:41,475 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 10:33:41,475 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-20 10:33:41,476 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 10:33:41,476 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 10:33:41,676 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-11-20 10:33:41,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-20 10:33:41,961 INFO L444 ceAbstractionStarter]: For program point L36(lines 36 39) no Hoare annotation was computed. [2019-11-20 10:33:41,961 INFO L444 ceAbstractionStarter]: For program point L36-1(lines 36 39) no Hoare annotation was computed. [2019-11-20 10:33:41,961 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-20 10:33:41,961 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-20 10:33:41,962 INFO L444 ceAbstractionStarter]: For program point L78(line 78) no Hoare annotation was computed. [2019-11-20 10:33:41,962 INFO L444 ceAbstractionStarter]: For program point L78-2(lines 78 81) no Hoare annotation was computed. [2019-11-20 10:33:41,962 INFO L440 ceAbstractionStarter]: At program point L62(lines 53 63) the Hoare annotation is: (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= (_ +zero 8 24) |ULTIMATE.start_fmax_float_#res|) (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) (= |ULTIMATE.start___signbit_float_#res| (_ bv0 32)) |ULTIMATE.start_main_#t~short9| (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~1) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~1) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~1)))) [2019-11-20 10:33:41,962 INFO L444 ceAbstractionStarter]: For program point L79(line 79) no Hoare annotation was computed. [2019-11-20 10:33:41,962 INFO L444 ceAbstractionStarter]: For program point L30(lines 30 39) no Hoare annotation was computed. [2019-11-20 10:33:41,962 INFO L444 ceAbstractionStarter]: For program point L30-1(lines 30 39) no Hoare annotation was computed. [2019-11-20 10:33:41,963 INFO L444 ceAbstractionStarter]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2019-11-20 10:33:41,963 INFO L440 ceAbstractionStarter]: At program point L22-2(lines 22 26) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= ULTIMATE.start_fmax_float_~x .cse0) (= .cse0 ULTIMATE.start___fpclassify_float_~x))) [2019-11-20 10:33:41,963 INFO L444 ceAbstractionStarter]: For program point L22-3(lines 19 40) no Hoare annotation was computed. [2019-11-20 10:33:41,963 INFO L444 ceAbstractionStarter]: For program point L22-5(lines 22 26) no Hoare annotation was computed. [2019-11-20 10:33:41,963 INFO L440 ceAbstractionStarter]: At program point L22-6(lines 22 26) the Hoare annotation is: (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x)) [2019-11-20 10:33:41,963 INFO L444 ceAbstractionStarter]: For program point L22-7(lines 19 40) no Hoare annotation was computed. [2019-11-20 10:33:41,963 INFO L444 ceAbstractionStarter]: For program point L47(lines 47 49) no Hoare annotation was computed. [2019-11-20 10:33:41,963 INFO L440 ceAbstractionStarter]: At program point L39(lines 19 40) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= ULTIMATE.start_fmax_float_~x .cse0) (= .cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= .cse0 ULTIMATE.start___fpclassify_float_~x) (= (_ bv2 32) |ULTIMATE.start___fpclassify_float_#res|))) [2019-11-20 10:33:41,964 INFO L440 ceAbstractionStarter]: At program point L39-1(lines 19 40) the Hoare annotation is: (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x)) [2019-11-20 10:33:41,964 INFO L444 ceAbstractionStarter]: For program point L56-1(lines 56 60) no Hoare annotation was computed. [2019-11-20 10:33:41,964 INFO L440 ceAbstractionStarter]: At program point L56-2(lines 56 60) the Hoare annotation is: (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= (_ +zero 8 24) |ULTIMATE.start_fmax_float_#res|) (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) |ULTIMATE.start_main_#t~short9|) [2019-11-20 10:33:41,964 INFO L444 ceAbstractionStarter]: For program point L56-3(lines 56 60) no Hoare annotation was computed. [2019-11-20 10:33:41,964 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-20 10:33:41,965 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 79) no Hoare annotation was computed. [2019-11-20 10:33:41,965 INFO L444 ceAbstractionStarter]: For program point L33(lines 33 39) no Hoare annotation was computed. [2019-11-20 10:33:41,965 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-20 10:33:41,965 INFO L444 ceAbstractionStarter]: For program point L33-1(lines 33 39) no Hoare annotation was computed. [2019-11-20 10:33:41,965 INFO L447 ceAbstractionStarter]: At program point L83(lines 65 84) the Hoare annotation is: true [2019-11-20 10:33:41,965 INFO L444 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2019-11-20 10:33:41,966 INFO L444 ceAbstractionStarter]: For program point L50-2(line 50) no Hoare annotation was computed. [2019-11-20 10:33:41,966 INFO L440 ceAbstractionStarter]: At program point L50-3(lines 42 51) the Hoare annotation is: (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= (_ +zero 8 24) |ULTIMATE.start_fmax_float_#res|)) [2019-11-20 10:33:41,966 INFO L444 ceAbstractionStarter]: For program point L43(lines 43 45) no Hoare annotation was computed. [2019-11-20 10:33:41,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:33:41 BoogieIcfgContainer [2019-11-20 10:33:41,991 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 10:33:41,991 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 10:33:41,991 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 10:33:41,992 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 10:33:41,992 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:33:37" (3/4) ... [2019-11-20 10:33:41,996 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 10:33:42,009 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2019-11-20 10:33:42,010 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-11-20 10:33:42,011 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-20 10:33:42,044 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((y == ~Pluszero~LONGDOUBLE() && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && 2bv32 == \result [2019-11-20 10:33:42,045 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result [2019-11-20 10:33:42,046 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && aux-res == 0.0f && __signbit_float(res) == 0-aux [2019-11-20 10:33:42,046 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && !(0bv32 == \result)) && ~Pluszero~LONGDOUBLE() == x [2019-11-20 10:33:42,047 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && \result == 0bv32) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) [2019-11-20 10:33:42,079 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0ef885e3-f418-4f69-9690-480b63cfb77d/bin/uautomizer/witness.graphml [2019-11-20 10:33:42,079 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 10:33:42,082 INFO L168 Benchmark]: Toolchain (without parser) took 5815.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 961.8 MB in the beginning and 858.6 MB in the end (delta: 103.2 MB). Peak memory consumption was 262.1 MB. Max. memory is 11.5 GB. [2019-11-20 10:33:42,082 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:33:42,083 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 961.8 MB in the beginning and 1.2 GB in the end (delta: -192.1 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-11-20 10:33:42,083 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-20 10:33:42,084 INFO L168 Benchmark]: Boogie Preprocessor took 40.27 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:33:42,084 INFO L168 Benchmark]: RCFGBuilder took 457.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2019-11-20 10:33:42,085 INFO L168 Benchmark]: TraceAbstraction took 4802.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 858.6 MB in the end (delta: 264.2 MB). Peak memory consumption was 264.2 MB. Max. memory is 11.5 GB. [2019-11-20 10:33:42,085 INFO L168 Benchmark]: Witness Printer took 88.60 ms. Allocated memory is still 1.2 GB. Free memory is still 858.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:33:42,087 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 369.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 961.8 MB in the beginning and 1.2 GB in the end (delta: -192.1 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 50.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.27 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 457.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4802.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 858.6 MB in the end (delta: 264.2 MB). Peak memory consumption was 264.2 MB. Max. memory is 11.5 GB. * Witness Printer took 88.60 ms. Allocated memory is still 1.2 GB. Free memory is still 858.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 79]: 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: 42]: Loop Invariant Derived loop invariant: (((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (y == ~Pluszero~LONGDOUBLE() && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && !(0bv32 == \result)) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: ((((((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && aux-res == 0.0f && __signbit_float(res) == 0-aux - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (((y == ~Pluszero~LONGDOUBLE() && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && 2bv32 == \result - InvariantResult [Line: 65]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 53]: Loop Invariant Derived loop invariant: ((((((((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && \result == 0bv32) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (y == ~Pluszero~LONGDOUBLE() && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: SAFE, OverallTime: 4.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 234 SDtfs, 215 SDslu, 432 SDs, 0 SdLazy, 153 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 257 GetRequests, 197 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 8 MinimizatonAttempts, 59 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 16 NumberOfFragments, 168 HoareAnnotationTreeSize, 8 FomulaSimplifications, 42 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 240 ConstructedInterpolants, 15 QuantifiedInterpolants, 14652 SizeOfPredicates, 38 NumberOfNonLiveVariables, 391 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...