./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 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_913d004c-95fa-405d-a371-0e16fdfea49a/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_913d004c-95fa-405d-a371-0e16fdfea49a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_913d004c-95fa-405d-a371-0e16fdfea49a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_913d004c-95fa-405d-a371-0e16fdfea49a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_913d004c-95fa-405d-a371-0e16fdfea49a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_913d004c-95fa-405d-a371-0e16fdfea49a/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_913d004c-95fa-405d-a371-0e16fdfea49a/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_913d004c-95fa-405d-a371-0e16fdfea49a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_913d004c-95fa-405d-a371-0e16fdfea49a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_913d004c-95fa-405d-a371-0e16fdfea49a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_913d004c-95fa-405d-a371-0e16fdfea49a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_913d004c-95fa-405d-a371-0e16fdfea49a/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 0.1.24-6b5699a [2019-11-25 08:55:20,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:55:20,971 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:55:20,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:55:20,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:55:20,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:55:20,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:55:20,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:55:21,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:55:21,004 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:55:21,005 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:55:21,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:55:21,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:55:21,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:55:21,010 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:55:21,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:55:21,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:55:21,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:55:21,015 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:55:21,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:55:21,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:55:21,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:55:21,027 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:55:21,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:55:21,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:55:21,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:55:21,031 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:55:21,032 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:55:21,033 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:55:21,034 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:55:21,034 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:55:21,035 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:55:21,036 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:55:21,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:55:21,037 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:55:21,037 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:55:21,038 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:55:21,038 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:55:21,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:55:21,039 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:55:21,040 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:55:21,041 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_913d004c-95fa-405d-a371-0e16fdfea49a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:55:21,063 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:55:21,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:55:21,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:55:21,074 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:55:21,074 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:55:21,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:55:21,075 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:55:21,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:55:21,075 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:55:21,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:55:21,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:55:21,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:55:21,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:55:21,076 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:55:21,076 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:55:21,077 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:55:21,078 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:55:21,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:55:21,078 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:55:21,078 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:55:21,079 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:55:21,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:55:21,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:55:21,080 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:55:21,080 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:55:21,080 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:55:21,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:55:21,080 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:55:21,081 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_913d004c-95fa-405d-a371-0e16fdfea49a/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 [2019-11-25 08:55:21,241 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:55:21,255 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:55:21,258 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:55:21,259 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:55:21,260 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:55:21,260 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_913d004c-95fa-405d-a371-0e16fdfea49a/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2019-11-25 08:55:21,321 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_913d004c-95fa-405d-a371-0e16fdfea49a/bin/uautomizer/data/0b959a37e/c823d9d4df4346d4b3e4928953c3bcb1/FLAG9ddcf6d12 [2019-11-25 08:55:21,731 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:55:21,732 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_913d004c-95fa-405d-a371-0e16fdfea49a/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2019-11-25 08:55:21,738 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_913d004c-95fa-405d-a371-0e16fdfea49a/bin/uautomizer/data/0b959a37e/c823d9d4df4346d4b3e4928953c3bcb1/FLAG9ddcf6d12 [2019-11-25 08:55:22,148 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_913d004c-95fa-405d-a371-0e16fdfea49a/bin/uautomizer/data/0b959a37e/c823d9d4df4346d4b3e4928953c3bcb1 [2019-11-25 08:55:22,150 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:55:22,152 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:55:22,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:55:22,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:55:22,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:55:22,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:55:22" (1/1) ... [2019-11-25 08:55:22,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31e200dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:22, skipping insertion in model container [2019-11-25 08:55:22,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:55:22" (1/1) ... [2019-11-25 08:55:22,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:55:22,192 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:55:22,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:55:22,462 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:55:22,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:55:22,530 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:55:22,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:22 WrapperNode [2019-11-25 08:55:22,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:55:22,532 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:55:22,532 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:55:22,532 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:55:22,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:22" (1/1) ... [2019-11-25 08:55:22,560 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:22" (1/1) ... [2019-11-25 08:55:22,582 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:55:22,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:55:22,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:55:22,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:55:22,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:22" (1/1) ... [2019-11-25 08:55:22,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:22" (1/1) ... [2019-11-25 08:55:22,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:22" (1/1) ... [2019-11-25 08:55:22,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:22" (1/1) ... [2019-11-25 08:55:22,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:22" (1/1) ... [2019-11-25 08:55:22,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:22" (1/1) ... [2019-11-25 08:55:22,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:22" (1/1) ... [2019-11-25 08:55:22,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:55:22,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:55:22,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:55:22,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:55:22,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_913d004c-95fa-405d-a371-0e16fdfea49a/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 [2019-11-25 08:55:22,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-25 08:55:22,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:55:22,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:55:22,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-25 08:55:22,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:55:22,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:55:23,103 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:55:23,103 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-25 08:55:23,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:55:23 BoogieIcfgContainer [2019-11-25 08:55:23,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:55:23,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:55:23,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:55:23,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:55:23,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:55:22" (1/3) ... [2019-11-25 08:55:23,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50247593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:55:23, skipping insertion in model container [2019-11-25 08:55:23,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:22" (2/3) ... [2019-11-25 08:55:23,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50247593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:55:23, skipping insertion in model container [2019-11-25 08:55:23,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:55:23" (3/3) ... [2019-11-25 08:55:23,112 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a.c [2019-11-25 08:55:23,121 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:55:23,127 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:55:23,138 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:55:23,159 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:55:23,159 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:55:23,160 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:55:23,160 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:55:23,160 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:55:23,160 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:55:23,160 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:55:23,160 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:55:23,174 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-25 08:55:23,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-25 08:55:23,180 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:55:23,180 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:55:23,181 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:55:23,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:23,186 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-25 08:55:23,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:23,194 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156362707] [2019-11-25 08:55:23,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:23,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:23,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:23,300 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156362707] [2019-11-25 08:55:23,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:55:23,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:55:23,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564723046] [2019-11-25 08:55:23,305 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:55:23,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:55:23,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:55:23,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:55:23,320 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-25 08:55:23,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:55:23,337 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-25 08:55:23,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:55:23,338 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-25 08:55:23,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:55:23,346 INFO L225 Difference]: With dead ends: 62 [2019-11-25 08:55:23,347 INFO L226 Difference]: Without dead ends: 29 [2019-11-25 08:55:23,349 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 [2019-11-25 08:55:23,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-25 08:55:23,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-25 08:55:23,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-25 08:55:23,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-25 08:55:23,380 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-25 08:55:23,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:55:23,380 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-25 08:55:23,381 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:55:23,381 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-25 08:55:23,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:55:23,381 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:55:23,382 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:55:23,382 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:55:23,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:23,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-25 08:55:23,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:23,383 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784238132] [2019-11-25 08:55:23,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:23,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:23,444 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784238132] [2019-11-25 08:55:23,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:55:23,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:55:23,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248061748] [2019-11-25 08:55:23,446 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:55:23,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:55:23,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:55:23,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:55:23,447 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2019-11-25 08:55:23,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:55:23,507 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-11-25 08:55:23,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:55:23,507 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-25 08:55:23,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:55:23,508 INFO L225 Difference]: With dead ends: 53 [2019-11-25 08:55:23,508 INFO L226 Difference]: Without dead ends: 44 [2019-11-25 08:55:23,509 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 [2019-11-25 08:55:23,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-25 08:55:23,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2019-11-25 08:55:23,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-25 08:55:23,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-25 08:55:23,515 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-25 08:55:23,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:55:23,516 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-25 08:55:23,516 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:55:23,516 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-25 08:55:23,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-25 08:55:23,517 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:55:23,517 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:55:23,517 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:55:23,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:23,517 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2019-11-25 08:55:23,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:23,518 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627866359] [2019-11-25 08:55:23,518 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:23,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:23,587 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627866359] [2019-11-25 08:55:23,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:55:23,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:55:23,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621915952] [2019-11-25 08:55:23,587 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:55:23,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:55:23,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:55:23,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:55:23,588 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-11-25 08:55:23,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:55:23,654 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2019-11-25 08:55:23,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:55:23,654 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-25 08:55:23,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:55:23,655 INFO L225 Difference]: With dead ends: 55 [2019-11-25 08:55:23,655 INFO L226 Difference]: Without dead ends: 46 [2019-11-25 08:55:23,656 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 [2019-11-25 08:55:23,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-25 08:55:23,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2019-11-25 08:55:23,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-25 08:55:23,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-25 08:55:23,660 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2019-11-25 08:55:23,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:55:23,661 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-25 08:55:23,661 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:55:23,661 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-25 08:55:23,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-25 08:55:23,662 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:55:23,662 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:55:23,662 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:55:23,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:23,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-25 08:55:23,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:23,663 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443117801] [2019-11-25 08:55:23,663 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:23,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:23,741 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:55:23,741 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:55:23,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:55:23 BoogieIcfgContainer [2019-11-25 08:55:23,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:55:23,771 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:55:23,771 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:55:23,771 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:55:23,771 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:55:23" (3/4) ... [2019-11-25 08:55:23,774 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:55:23,774 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:55:23,776 INFO L168 Benchmark]: Toolchain (without parser) took 1624.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -116.4 MB). Peak memory consumption was 33.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:55:23,777 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:55:23,777 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -191.3 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:55:23,778 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.60 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. [2019-11-25 08:55:23,778 INFO L168 Benchmark]: Boogie Preprocessor took 35.46 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-25 08:55:23,779 INFO L168 Benchmark]: RCFGBuilder took 486.60 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:55:23,779 INFO L168 Benchmark]: TraceAbstraction took 664.87 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: 45.9 MB). Peak memory consumption was 45.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:55:23,780 INFO L168 Benchmark]: Witness Printer took 3.62 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. [2019-11-25 08:55:23,783 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 376.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -191.3 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 50.60 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. * Boogie Preprocessor took 35.46 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 486.60 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 664.87 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: 45.9 MB). Peak memory consumption was 45.9 MB. Max. memory is 11.5 GB. * Witness Printer took 3.62 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: 0.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, 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 0.1.24-6b5699a [2019-11-25 08:55:25,541 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-11-25 08:55:25,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:55:25,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:55:25,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:55:25,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:55:25,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:55:25,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:55:25,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:55:25,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:55:25,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:55:25,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:55:25,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:55:25,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:55:25,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:55:25,605 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:55:25,605 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:55:25,606 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:55:25,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:55:25,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:55:25,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:55:25,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:55:25,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:55:25,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:55:25,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:55:25,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:55:25,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:55:25,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:55:25,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:55:25,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:55:25,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:55:25,617 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_913d004c-95fa-405d-a371-0e16fdfea49a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-25 08:55:25,640 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:55:25,648 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:55:25,649 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:55:25,649 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:55:25,650 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:55:25,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:55:25,650 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:55:25,650 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:55:25,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:55:25,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:55:25,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:55:25,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:55:25,652 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-25 08:55:25,652 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-25 08:55:25,652 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-25 08:55:25,652 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:55:25,653 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:55:25,653 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:55:25,653 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:55:25,653 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:55:25,654 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:55:25,654 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:55:25,654 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:55:25,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:55:25,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:55:25,655 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:55:25,655 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:55:25,655 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-25 08:55:25,656 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-25 08:55:25,656 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:55:25,656 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-25 08:55:25,656 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_913d004c-95fa-405d-a371-0e16fdfea49a/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 [2019-11-25 08:55:25,911 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:55:25,921 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:55:25,923 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:55:25,925 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:55:25,925 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:55:25,926 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_913d004c-95fa-405d-a371-0e16fdfea49a/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2019-11-25 08:55:25,971 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_913d004c-95fa-405d-a371-0e16fdfea49a/bin/uautomizer/data/882cff397/dff3d0fb5d1b42fb98ff8ad3785f94af/FLAG793237e65 [2019-11-25 08:55:26,360 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:55:26,361 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_913d004c-95fa-405d-a371-0e16fdfea49a/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2019-11-25 08:55:26,366 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_913d004c-95fa-405d-a371-0e16fdfea49a/bin/uautomizer/data/882cff397/dff3d0fb5d1b42fb98ff8ad3785f94af/FLAG793237e65 [2019-11-25 08:55:26,378 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_913d004c-95fa-405d-a371-0e16fdfea49a/bin/uautomizer/data/882cff397/dff3d0fb5d1b42fb98ff8ad3785f94af [2019-11-25 08:55:26,380 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:55:26,381 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:55:26,382 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:55:26,382 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:55:26,385 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:55:26,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:55:26" (1/1) ... [2019-11-25 08:55:26,389 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15bbfe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:26, skipping insertion in model container [2019-11-25 08:55:26,389 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:55:26" (1/1) ... [2019-11-25 08:55:26,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:55:26,412 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:55:26,559 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:55:26,565 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:55:26,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:55:26,610 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:55:26,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:26 WrapperNode [2019-11-25 08:55:26,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:55:26,611 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:55:26,611 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:55:26,611 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:55:26,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:26" (1/1) ... [2019-11-25 08:55:26,629 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:26" (1/1) ... [2019-11-25 08:55:26,726 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:55:26,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:55:26,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:55:26,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:55:26,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:26" (1/1) ... [2019-11-25 08:55:26,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:26" (1/1) ... [2019-11-25 08:55:26,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:26" (1/1) ... [2019-11-25 08:55:26,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:26" (1/1) ... [2019-11-25 08:55:26,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:26" (1/1) ... [2019-11-25 08:55:26,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:26" (1/1) ... [2019-11-25 08:55:26,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:26" (1/1) ... [2019-11-25 08:55:26,792 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:55:26,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:55:26,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:55:26,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:55:26,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_913d004c-95fa-405d-a371-0e16fdfea49a/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 [2019-11-25 08:55:26,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:55:26,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-25 08:55:26,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:55:26,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:55:26,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-25 08:55:26,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:55:27,276 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:55:27,276 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-25 08:55:27,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:55:27 BoogieIcfgContainer [2019-11-25 08:55:27,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:55:27,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:55:27,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:55:27,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:55:27,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:55:26" (1/3) ... [2019-11-25 08:55:27,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6201043f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:55:27, skipping insertion in model container [2019-11-25 08:55:27,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:26" (2/3) ... [2019-11-25 08:55:27,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6201043f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:55:27, skipping insertion in model container [2019-11-25 08:55:27,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:55:27" (3/3) ... [2019-11-25 08:55:27,284 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a.c [2019-11-25 08:55:27,290 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:55:27,295 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:55:27,303 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:55:27,324 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:55:27,324 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:55:27,324 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:55:27,324 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:55:27,324 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:55:27,325 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:55:27,325 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:55:27,325 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:55:27,338 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-25 08:55:27,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-25 08:55:27,344 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:55:27,345 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:55:27,345 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:55:27,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:27,351 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-25 08:55:27,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:55:27,361 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1050838882] [2019-11-25 08:55:27,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_913d004c-95fa-405d-a371-0e16fdfea49a/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 [2019-11-25 08:55:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:27,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-25 08:55:27,457 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:27,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:27,474 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:55:27,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:27,489 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1050838882] [2019-11-25 08:55:27,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:55:27,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-25 08:55:27,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780524112] [2019-11-25 08:55:27,494 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:55:27,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:55:27,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:55:27,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:55:27,510 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-25 08:55:27,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:55:27,532 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-25 08:55:27,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:55:27,533 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-25 08:55:27,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:55:27,546 INFO L225 Difference]: With dead ends: 62 [2019-11-25 08:55:27,546 INFO L226 Difference]: Without dead ends: 29 [2019-11-25 08:55:27,553 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 [2019-11-25 08:55:27,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-25 08:55:27,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-25 08:55:27,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-25 08:55:27,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-25 08:55:27,585 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-25 08:55:27,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:55:27,585 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-25 08:55:27,585 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:55:27,586 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-25 08:55:27,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:55:27,586 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:55:27,587 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:55:27,794 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-25 08:55:27,794 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:55:27,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:27,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-25 08:55:27,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:55:27,795 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183818854] [2019-11-25 08:55:27,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_913d004c-95fa-405d-a371-0e16fdfea49a/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 [2019-11-25 08:55:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:27,850 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-25 08:55:27,851 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:27,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:27,877 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:55:27,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:27,899 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183818854] [2019-11-25 08:55:27,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:55:27,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-25 08:55:27,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577975246] [2019-11-25 08:55:27,901 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:55:27,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:55:27,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:55:27,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:55:27,902 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2019-11-25 08:55:28,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:55:28,007 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2019-11-25 08:55:28,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:55:28,008 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-25 08:55:28,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:55:28,009 INFO L225 Difference]: With dead ends: 68 [2019-11-25 08:55:28,009 INFO L226 Difference]: Without dead ends: 59 [2019-11-25 08:55:28,010 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 [2019-11-25 08:55:28,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-25 08:55:28,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2019-11-25 08:55:28,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-25 08:55:28,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-25 08:55:28,022 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-25 08:55:28,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:55:28,023 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-25 08:55:28,023 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:55:28,023 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-25 08:55:28,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-25 08:55:28,025 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:55:28,025 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:55:28,237 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-25 08:55:28,237 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:55:28,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:28,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-25 08:55:28,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:55:28,239 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [915312116] [2019-11-25 08:55:28,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_913d004c-95fa-405d-a371-0e16fdfea49a/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 [2019-11-25 08:55:28,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:28,309 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-25 08:55:28,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:28,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:28,348 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:55:28,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:28,383 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [915312116] [2019-11-25 08:55:28,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:55:28,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-25 08:55:28,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523108577] [2019-11-25 08:55:28,384 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:55:28,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:55:28,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:55:28,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:55:28,390 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-11-25 08:55:28,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:55:28,448 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2019-11-25 08:55:28,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:55:28,449 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-25 08:55:28,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:55:28,450 INFO L225 Difference]: With dead ends: 52 [2019-11-25 08:55:28,450 INFO L226 Difference]: Without dead ends: 26 [2019-11-25 08:55:28,450 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 [2019-11-25 08:55:28,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-25 08:55:28,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-25 08:55:28,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-25 08:55:28,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2019-11-25 08:55:28,455 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2019-11-25 08:55:28,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:55:28,455 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2019-11-25 08:55:28,455 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:55:28,455 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2019-11-25 08:55:28,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-25 08:55:28,456 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:55:28,457 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:55:28,664 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-25 08:55:28,665 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:55:28,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:28,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2019-11-25 08:55:28,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:55:28,666 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738196838] [2019-11-25 08:55:28,666 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_913d004c-95fa-405d-a371-0e16fdfea49a/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 [2019-11-25 08:55:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:28,742 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-25 08:55:28,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:28,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:28,756 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:55:28,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:28,779 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738196838] [2019-11-25 08:55:28,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:55:28,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-25 08:55:28,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088459424] [2019-11-25 08:55:28,780 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:55:28,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:55:28,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:55:28,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:55:28,781 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 6 states. [2019-11-25 08:55:28,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:55:28,855 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2019-11-25 08:55:28,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:55:28,855 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-25 08:55:28,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:55:28,856 INFO L225 Difference]: With dead ends: 61 [2019-11-25 08:55:28,856 INFO L226 Difference]: Without dead ends: 52 [2019-11-25 08:55:28,857 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 [2019-11-25 08:55:28,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-25 08:55:28,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2019-11-25 08:55:28,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-25 08:55:28,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2019-11-25 08:55:28,869 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2019-11-25 08:55:28,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:55:28,870 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2019-11-25 08:55:28,870 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:55:28,870 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2019-11-25 08:55:28,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-25 08:55:28,872 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:55:28,873 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:55:29,086 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-25 08:55:29,086 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:55:29,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:29,087 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2019-11-25 08:55:29,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:55:29,088 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1829136955] [2019-11-25 08:55:29,088 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_913d004c-95fa-405d-a371-0e16fdfea49a/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 [2019-11-25 08:55:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:29,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:55:29,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:29,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:29,182 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:55:29,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:29,211 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1829136955] [2019-11-25 08:55:29,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:55:29,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-25 08:55:29,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277145246] [2019-11-25 08:55:29,212 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:55:29,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:55:29,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:55:29,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:55:29,213 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2019-11-25 08:55:29,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:55:29,234 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2019-11-25 08:55:29,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:55:29,236 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-11-25 08:55:29,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:55:29,237 INFO L225 Difference]: With dead ends: 38 [2019-11-25 08:55:29,237 INFO L226 Difference]: Without dead ends: 28 [2019-11-25 08:55:29,237 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 [2019-11-25 08:55:29,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-25 08:55:29,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-25 08:55:29,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-25 08:55:29,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-11-25 08:55:29,245 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2019-11-25 08:55:29,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:55:29,248 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-11-25 08:55:29,248 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:55:29,248 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-11-25 08:55:29,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-25 08:55:29,249 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:55:29,249 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:55:29,449 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-25 08:55:29,450 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:55:29,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:29,450 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2019-11-25 08:55:29,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:55:29,450 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [253499352] [2019-11-25 08:55:29,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_913d004c-95fa-405d-a371-0e16fdfea49a/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 [2019-11-25 08:55:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:29,514 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:55:29,515 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:29,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:29,563 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:55:29,564 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:55:29,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:29,618 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [253499352] [2019-11-25 08:55:29,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:55:29,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-11-25 08:55:29,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986295520] [2019-11-25 08:55:29,619 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-25 08:55:29,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:55:29,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-25 08:55:29,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-25 08:55:29,620 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 9 states. [2019-11-25 08:55:29,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:55:29,726 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2019-11-25 08:55:29,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:55:29,726 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2019-11-25 08:55:29,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:55:29,727 INFO L225 Difference]: With dead ends: 40 [2019-11-25 08:55:29,727 INFO L226 Difference]: Without dead ends: 37 [2019-11-25 08:55:29,728 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 [2019-11-25 08:55:29,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-25 08:55:29,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2019-11-25 08:55:29,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-25 08:55:29,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-11-25 08:55:29,732 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 18 [2019-11-25 08:55:29,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:55:29,733 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-11-25 08:55:29,733 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-25 08:55:29,733 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-11-25 08:55:29,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-25 08:55:29,734 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:55:29,734 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:55:29,952 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-25 08:55:29,952 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:55:29,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:29,952 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2019-11-25 08:55:29,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:55:29,953 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1207375726] [2019-11-25 08:55:29,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_913d004c-95fa-405d-a371-0e16fdfea49a/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 [2019-11-25 08:55:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:30,018 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-25 08:55:30,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:30,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:30,048 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:55:30,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:30,069 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1207375726] [2019-11-25 08:55:30,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:55:30,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-25 08:55:30,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258545690] [2019-11-25 08:55:30,070 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:55:30,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:55:30,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:55:30,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:55:30,071 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2019-11-25 08:55:30,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:55:30,128 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2019-11-25 08:55:30,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:55:30,129 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-11-25 08:55:30,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:55:30,129 INFO L225 Difference]: With dead ends: 43 [2019-11-25 08:55:30,129 INFO L226 Difference]: Without dead ends: 23 [2019-11-25 08:55:30,130 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 [2019-11-25 08:55:30,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-25 08:55:30,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-25 08:55:30,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-25 08:55:30,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2019-11-25 08:55:30,133 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 19 [2019-11-25 08:55:30,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:55:30,134 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2019-11-25 08:55:30,134 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:55:30,134 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2019-11-25 08:55:30,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-25 08:55:30,135 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:55:30,135 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] [2019-11-25 08:55:30,353 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-11-25 08:55:30,354 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:55:30,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:30,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2019-11-25 08:55:30,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:55:30,354 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [447089377] [2019-11-25 08:55:30,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_913d004c-95fa-405d-a371-0e16fdfea49a/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 [2019-11-25 08:55:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:30,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-25 08:55:30,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:30,521 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:55:30,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:30,554 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:55:30,555 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:55:30,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:30,785 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [447089377] [2019-11-25 08:55:30,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:55:30,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 16 [2019-11-25 08:55:30,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847129685] [2019-11-25 08:55:30,787 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-25 08:55:30,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:55:30,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-25 08:55:30,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2019-11-25 08:55:30,788 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand 16 states. [2019-11-25 08:55:31,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:55:31,018 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2019-11-25 08:55:31,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-25 08:55:31,020 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 22 [2019-11-25 08:55:31,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:55:31,021 INFO L225 Difference]: With dead ends: 23 [2019-11-25 08:55:31,021 INFO L226 Difference]: Without dead ends: 0 [2019-11-25 08:55:31,022 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2019-11-25 08:55:31,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-25 08:55:31,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-25 08:55:31,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-25 08:55:31,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:55:31,022 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2019-11-25 08:55:31,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:55:31,022 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:55:31,023 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-25 08:55:31,023 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:55:31,023 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-25 08:55:31,223 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-11-25 08:55:31,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-25 08:55:31,459 INFO L444 ceAbstractionStarter]: For program point L36(lines 36 39) no Hoare annotation was computed. [2019-11-25 08:55:31,459 INFO L444 ceAbstractionStarter]: For program point L36-1(lines 36 39) no Hoare annotation was computed. [2019-11-25 08:55:31,459 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-25 08:55:31,459 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-25 08:55:31,459 INFO L444 ceAbstractionStarter]: For program point L78(line 78) no Hoare annotation was computed. [2019-11-25 08:55:31,459 INFO L444 ceAbstractionStarter]: For program point L78-2(lines 78 81) no Hoare annotation was computed. [2019-11-25 08:55:31,460 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)))) [2019-11-25 08:55:31,460 INFO L444 ceAbstractionStarter]: For program point L79(line 79) no Hoare annotation was computed. [2019-11-25 08:55:31,460 INFO L444 ceAbstractionStarter]: For program point L30(lines 30 39) no Hoare annotation was computed. [2019-11-25 08:55:31,460 INFO L444 ceAbstractionStarter]: For program point L30-1(lines 30 39) no Hoare annotation was computed. [2019-11-25 08:55:31,460 INFO L444 ceAbstractionStarter]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2019-11-25 08:55:31,460 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))) [2019-11-25 08:55:31,460 INFO L444 ceAbstractionStarter]: For program point L22-3(lines 19 40) no Hoare annotation was computed. [2019-11-25 08:55:31,460 INFO L444 ceAbstractionStarter]: For program point L22-5(lines 22 26) no Hoare annotation was computed. [2019-11-25 08:55:31,461 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)) [2019-11-25 08:55:31,461 INFO L444 ceAbstractionStarter]: For program point L22-7(lines 19 40) no Hoare annotation was computed. [2019-11-25 08:55:31,461 INFO L444 ceAbstractionStarter]: For program point L47(lines 47 49) no Hoare annotation was computed. [2019-11-25 08:55:31,461 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|))) [2019-11-25 08:55:31,461 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)) [2019-11-25 08:55:31,461 INFO L444 ceAbstractionStarter]: For program point L56-1(lines 56 60) no Hoare annotation was computed. [2019-11-25 08:55:31,461 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|) [2019-11-25 08:55:31,461 INFO L444 ceAbstractionStarter]: For program point L56-3(lines 56 60) no Hoare annotation was computed. [2019-11-25 08:55:31,462 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-25 08:55:31,462 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 79) no Hoare annotation was computed. [2019-11-25 08:55:31,462 INFO L444 ceAbstractionStarter]: For program point L33(lines 33 39) no Hoare annotation was computed. [2019-11-25 08:55:31,462 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-25 08:55:31,462 INFO L444 ceAbstractionStarter]: For program point L33-1(lines 33 39) no Hoare annotation was computed. [2019-11-25 08:55:31,462 INFO L447 ceAbstractionStarter]: At program point L83(lines 65 84) the Hoare annotation is: true [2019-11-25 08:55:31,462 INFO L444 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2019-11-25 08:55:31,462 INFO L444 ceAbstractionStarter]: For program point L50-2(line 50) no Hoare annotation was computed. [2019-11-25 08:55:31,463 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|)) [2019-11-25 08:55:31,463 INFO L444 ceAbstractionStarter]: For program point L43(lines 43 45) no Hoare annotation was computed. [2019-11-25 08:55:31,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:55:31 BoogieIcfgContainer [2019-11-25 08:55:31,480 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:55:31,481 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:55:31,481 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:55:31,481 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:55:31,481 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:55:27" (3/4) ... [2019-11-25 08:55:31,484 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-25 08:55:31,495 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2019-11-25 08:55:31,496 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-11-25 08:55:31,496 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-25 08:55:31,522 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 [2019-11-25 08:55:31,523 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 [2019-11-25 08:55:31,523 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 [2019-11-25 08:55:31,524 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 [2019-11-25 08:55:31,524 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]) [2019-11-25 08:55:31,551 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_913d004c-95fa-405d-a371-0e16fdfea49a/bin/uautomizer/witness.graphml [2019-11-25 08:55:31,551 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:55:31,553 INFO L168 Benchmark]: Toolchain (without parser) took 5171.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 952.4 MB in the beginning and 864.8 MB in the end (delta: 87.6 MB). Peak memory consumption was 251.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:55:31,554 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:55:31,554 INFO L168 Benchmark]: CACSL2BoogieTranslator took 228.37 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:55:31,555 INFO L168 Benchmark]: Boogie Procedure Inliner took 115.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 941.7 MB in the beginning and 1.2 GB in the end (delta: -218.6 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:55:31,555 INFO L168 Benchmark]: Boogie Preprocessor took 66.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:55:31,555 INFO L168 Benchmark]: RCFGBuilder took 484.61 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: 31.1 MB). Peak memory consumption was 31.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:55:31,556 INFO L168 Benchmark]: TraceAbstraction took 4202.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 871.5 MB in the end (delta: 251.0 MB). Peak memory consumption was 251.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:55:31,556 INFO L168 Benchmark]: Witness Printer took 70.95 ms. Allocated memory is still 1.2 GB. Free memory was 871.5 MB in the beginning and 864.8 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:55:31,558 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 228.37 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 115.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 941.7 MB in the beginning and 1.2 GB in the end (delta: -218.6 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 66.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 484.61 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: 31.1 MB). Peak memory consumption was 31.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4202.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 871.5 MB in the end (delta: 251.0 MB). Peak memory consumption was 251.0 MB. Max. memory is 11.5 GB. * Witness Printer took 70.95 ms. Allocated memory is still 1.2 GB. Free memory was 871.5 MB in the beginning and 864.8 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. 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: 4.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 234 SDtfs, 215 SDslu, 432 SDs, 0 SdLazy, 153 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 257 GetRequests, 197 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s 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, 44 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 240 ConstructedInterpolants, 15 QuantifiedInterpolants, 14652 SizeOfPredicates, 38 NumberOfNonLiveVariables, 399 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...