./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0710.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f91a194a-0b61-4df6-9f86-6e9c655ab6dc/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f91a194a-0b61-4df6-9f86-6e9c655ab6dc/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f91a194a-0b61-4df6-9f86-6e9c655ab6dc/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f91a194a-0b61-4df6-9f86-6e9c655ab6dc/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0710.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f91a194a-0b61-4df6-9f86-6e9c655ab6dc/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f91a194a-0b61-4df6-9f86-6e9c655ab6dc/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 1ff4e8ff973f803d8fa94df33d1e2314e0626318 ..................................................................................................................................................................................................................................................................................... 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_f91a194a-0b61-4df6-9f86-6e9c655ab6dc/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f91a194a-0b61-4df6-9f86-6e9c655ab6dc/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f91a194a-0b61-4df6-9f86-6e9c655ab6dc/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f91a194a-0b61-4df6-9f86-6e9c655ab6dc/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0710.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f91a194a-0b61-4df6-9f86-6e9c655ab6dc/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f91a194a-0b61-4df6-9f86-6e9c655ab6dc/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 1ff4e8ff973f803d8fa94df33d1e2314e0626318 ...................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 10:36:08,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 10:36:08,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 10:36:08,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 10:36:08,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 10:36:08,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 10:36:08,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 10:36:08,951 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 10:36:08,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 10:36:08,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 10:36:08,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 10:36:08,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 10:36:08,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 10:36:08,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 10:36:08,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 10:36:08,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 10:36:08,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 10:36:08,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 10:36:08,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 10:36:08,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 10:36:08,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 10:36:08,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 10:36:08,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 10:36:08,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 10:36:08,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 10:36:08,966 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 10:36:08,966 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 10:36:08,966 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 10:36:08,966 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 10:36:08,967 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 10:36:08,967 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 10:36:08,968 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 10:36:08,968 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 10:36:08,968 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 10:36:08,969 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 10:36:08,969 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 10:36:08,969 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 10:36:08,970 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 10:36:08,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 10:36:08,970 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 10:36:08,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 10:36:08,971 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f91a194a-0b61-4df6-9f86-6e9c655ab6dc/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 10:36:08,981 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 10:36:08,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 10:36:08,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 10:36:08,982 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 10:36:08,982 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 10:36:08,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 10:36:08,982 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 10:36:08,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 10:36:08,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 10:36:08,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 10:36:08,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 10:36:08,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 10:36:08,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 10:36:08,983 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 10:36:08,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 10:36:08,983 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 10:36:08,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 10:36:08,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 10:36:08,984 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 10:36:08,984 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 10:36:08,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 10:36:08,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 10:36:08,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 10:36:08,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 10:36:08,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 10:36:08,985 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 10:36:08,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 10:36:08,985 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 10:36:08,985 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 10:36:08,985 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_f91a194a-0b61-4df6-9f86-6e9c655ab6dc/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 -> 1ff4e8ff973f803d8fa94df33d1e2314e0626318 [2019-12-07 10:36:09,082 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 10:36:09,090 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 10:36:09,092 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 10:36:09,093 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 10:36:09,094 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 10:36:09,094 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f91a194a-0b61-4df6-9f86-6e9c655ab6dc/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_0710.c [2019-12-07 10:36:09,130 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f91a194a-0b61-4df6-9f86-6e9c655ab6dc/bin/uautomizer/data/4dbd1ea53/0255962219684e0c8108970a6577c65e/FLAGfa633539a [2019-12-07 10:36:09,531 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 10:36:09,532 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f91a194a-0b61-4df6-9f86-6e9c655ab6dc/sv-benchmarks/c/float-newlib/float_req_bl_0710.c [2019-12-07 10:36:09,536 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f91a194a-0b61-4df6-9f86-6e9c655ab6dc/bin/uautomizer/data/4dbd1ea53/0255962219684e0c8108970a6577c65e/FLAGfa633539a [2019-12-07 10:36:09,917 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f91a194a-0b61-4df6-9f86-6e9c655ab6dc/bin/uautomizer/data/4dbd1ea53/0255962219684e0c8108970a6577c65e [2019-12-07 10:36:09,920 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 10:36:09,921 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 10:36:09,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 10:36:09,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 10:36:09,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 10:36:09,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:36:09" (1/1) ... [2019-12-07 10:36:09,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e2d4e1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:36:09, skipping insertion in model container [2019-12-07 10:36:09,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:36:09" (1/1) ... [2019-12-07 10:36:09,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 10:36:09,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 10:36:10,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:36:10,099 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 10:36:10,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:36:10,137 INFO L208 MainTranslator]: Completed translation [2019-12-07 10:36:10,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:36:10 WrapperNode [2019-12-07 10:36:10,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 10:36:10,138 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 10:36:10,138 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 10:36:10,138 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 10:36:10,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:36:10" (1/1) ... [2019-12-07 10:36:10,151 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:36:10" (1/1) ... [2019-12-07 10:36:10,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 10:36:10,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 10:36:10,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 10:36:10,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 10:36:10,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:36:10" (1/1) ... [2019-12-07 10:36:10,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:36:10" (1/1) ... [2019-12-07 10:36:10,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:36:10" (1/1) ... [2019-12-07 10:36:10,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:36:10" (1/1) ... [2019-12-07 10:36:10,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:36:10" (1/1) ... [2019-12-07 10:36:10,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:36:10" (1/1) ... [2019-12-07 10:36:10,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:36:10" (1/1) ... [2019-12-07 10:36:10,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 10:36:10,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 10:36:10,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 10:36:10,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 10:36:10,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:36:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f91a194a-0b61-4df6-9f86-6e9c655ab6dc/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 [2019-12-07 10:36:10,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 10:36:10,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-12-07 10:36:10,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 10:36:10,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 10:36:10,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 10:36:10,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 10:36:10,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 10:36:10,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 10:36:10,405 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 10:36:10,406 INFO L287 CfgBuilder]: Removed 14 assume(true) statements. [2019-12-07 10:36:10,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:36:10 BoogieIcfgContainer [2019-12-07 10:36:10,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 10:36:10,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 10:36:10,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 10:36:10,409 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 10:36:10,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 10:36:09" (1/3) ... [2019-12-07 10:36:10,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70fd3394 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:36:10, skipping insertion in model container [2019-12-07 10:36:10,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:36:10" (2/3) ... [2019-12-07 10:36:10,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70fd3394 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:36:10, skipping insertion in model container [2019-12-07 10:36:10,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:36:10" (3/3) ... [2019-12-07 10:36:10,411 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0710.c [2019-12-07 10:36:10,417 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 10:36:10,421 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 10:36:10,428 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 10:36:10,442 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 10:36:10,442 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 10:36:10,442 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 10:36:10,442 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 10:36:10,443 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 10:36:10,443 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 10:36:10,443 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 10:36:10,443 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 10:36:10,454 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2019-12-07 10:36:10,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 10:36:10,458 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:36:10,458 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:36:10,458 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:36:10,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:36:10,462 INFO L82 PathProgramCache]: Analyzing trace with hash 860611220, now seen corresponding path program 1 times [2019-12-07 10:36:10,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:36:10,467 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345722261] [2019-12-07 10:36:10,468 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:36:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:36:10,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:36:10,548 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345722261] [2019-12-07 10:36:10,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:36:10,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 10:36:10,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532426935] [2019-12-07 10:36:10,552 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 10:36:10,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:36:10,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 10:36:10,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 10:36:10,562 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2019-12-07 10:36:10,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:36:10,576 INFO L93 Difference]: Finished difference Result 67 states and 102 transitions. [2019-12-07 10:36:10,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 10:36:10,577 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-12-07 10:36:10,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:36:10,584 INFO L225 Difference]: With dead ends: 67 [2019-12-07 10:36:10,584 INFO L226 Difference]: Without dead ends: 31 [2019-12-07 10:36:10,587 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 [2019-12-07 10:36:10,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-12-07 10:36:10,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-12-07 10:36:10,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 10:36:10,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2019-12-07 10:36:10,612 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 10 [2019-12-07 10:36:10,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:36:10,613 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2019-12-07 10:36:10,613 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 10:36:10,613 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2019-12-07 10:36:10,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 10:36:10,613 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:36:10,613 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:36:10,614 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:36:10,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:36:10,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1279985196, now seen corresponding path program 1 times [2019-12-07 10:36:10,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:36:10,614 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306020759] [2019-12-07 10:36:10,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:36:10,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:36:10,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:36:10,679 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 10:36:10,679 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 10:36:10,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 10:36:10 BoogieIcfgContainer [2019-12-07 10:36:10,697 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 10:36:10,697 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 10:36:10,697 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 10:36:10,697 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 10:36:10,698 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:36:10" (3/4) ... [2019-12-07 10:36:10,700 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 10:36:10,700 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 10:36:10,702 INFO L168 Benchmark]: Toolchain (without parser) took 780.81 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.2 MB). Free memory was 942.5 MB in the beginning and 1.0 GB in the end (delta: -86.4 MB). Peak memory consumption was 3.8 MB. Max. memory is 11.5 GB. [2019-12-07 10:36:10,702 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:36:10,703 INFO L168 Benchmark]: CACSL2BoogieTranslator took 216.34 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.2 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -142.6 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-12-07 10:36:10,703 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. [2019-12-07 10:36:10,703 INFO L168 Benchmark]: Boogie Preprocessor took 20.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 10:36:10,704 INFO L168 Benchmark]: RCFGBuilder took 214.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-12-07 10:36:10,704 INFO L168 Benchmark]: TraceAbstraction took 290.04 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. [2019-12-07 10:36:10,705 INFO L168 Benchmark]: Witness Printer took 2.95 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:36:10,707 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 216.34 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.2 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -142.6 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 214.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 290.04 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. * Witness Printer took 2.95 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 98]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 13, overapproximation of bitwiseAnd at line 27, overapproximation of someBinaryArithmeticFLOAToperation at line 30. Possible FailurePath: [L15] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L91] float x = __VERIFIER_nondet_float(); [L92] COND TRUE x < -0.0f [L18] float z; [L19] __uint32_t r, hx; [L20] __int32_t ix, s, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (ix) = gf_u.word [L27] hx = ix & 0x7fffffff VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L29] COND TRUE !((hx) < 0x7f800000L) [L30] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L94] float res = __ieee754_sqrtf(x); [L13] return x != x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L97] COND TRUE !isnan_float(res) [L98] __VERIFIER_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-12-07 10:36:12,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 10:36:12,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 10:36:12,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 10:36:12,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 10:36:12,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 10:36:12,053 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 10:36:12,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 10:36:12,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 10:36:12,057 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 10:36:12,057 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 10:36:12,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 10:36:12,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 10:36:12,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 10:36:12,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 10:36:12,060 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 10:36:12,061 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 10:36:12,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 10:36:12,063 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 10:36:12,064 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 10:36:12,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 10:36:12,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 10:36:12,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 10:36:12,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 10:36:12,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 10:36:12,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 10:36:12,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 10:36:12,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 10:36:12,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 10:36:12,072 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 10:36:12,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 10:36:12,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 10:36:12,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 10:36:12,073 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 10:36:12,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 10:36:12,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 10:36:12,075 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 10:36:12,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 10:36:12,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 10:36:12,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 10:36:12,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 10:36:12,077 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f91a194a-0b61-4df6-9f86-6e9c655ab6dc/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 10:36:12,086 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 10:36:12,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 10:36:12,087 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 10:36:12,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 10:36:12,088 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 10:36:12,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 10:36:12,088 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 10:36:12,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 10:36:12,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 10:36:12,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 10:36:12,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 10:36:12,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 10:36:12,089 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 10:36:12,089 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 10:36:12,089 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 10:36:12,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 10:36:12,089 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 10:36:12,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 10:36:12,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 10:36:12,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 10:36:12,090 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 10:36:12,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 10:36:12,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 10:36:12,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 10:36:12,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 10:36:12,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 10:36:12,091 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 10:36:12,091 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 10:36:12,091 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 10:36:12,091 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 10:36:12,091 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 10:36:12,092 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_f91a194a-0b61-4df6-9f86-6e9c655ab6dc/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 -> 1ff4e8ff973f803d8fa94df33d1e2314e0626318 [2019-12-07 10:36:12,267 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 10:36:12,275 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 10:36:12,277 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 10:36:12,278 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 10:36:12,278 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 10:36:12,278 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f91a194a-0b61-4df6-9f86-6e9c655ab6dc/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_0710.c [2019-12-07 10:36:12,317 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f91a194a-0b61-4df6-9f86-6e9c655ab6dc/bin/uautomizer/data/b1599ad02/3bec20f92951424eba1be4b3cd56c56d/FLAGb09da8985 [2019-12-07 10:36:12,639 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 10:36:12,640 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f91a194a-0b61-4df6-9f86-6e9c655ab6dc/sv-benchmarks/c/float-newlib/float_req_bl_0710.c [2019-12-07 10:36:12,644 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f91a194a-0b61-4df6-9f86-6e9c655ab6dc/bin/uautomizer/data/b1599ad02/3bec20f92951424eba1be4b3cd56c56d/FLAGb09da8985 [2019-12-07 10:36:12,653 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f91a194a-0b61-4df6-9f86-6e9c655ab6dc/bin/uautomizer/data/b1599ad02/3bec20f92951424eba1be4b3cd56c56d [2019-12-07 10:36:12,655 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 10:36:12,655 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 10:36:12,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 10:36:12,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 10:36:12,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 10:36:12,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:36:12" (1/1) ... [2019-12-07 10:36:12,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41944eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:36:12, skipping insertion in model container [2019-12-07 10:36:12,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:36:12" (1/1) ... [2019-12-07 10:36:12,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 10:36:12,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 10:36:12,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:36:12,796 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 10:36:12,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:36:12,833 INFO L208 MainTranslator]: Completed translation [2019-12-07 10:36:12,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:36:12 WrapperNode [2019-12-07 10:36:12,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 10:36:12,834 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 10:36:12,834 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 10:36:12,834 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 10:36:12,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:36:12" (1/1) ... [2019-12-07 10:36:12,847 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:36:12" (1/1) ... [2019-12-07 10:36:12,896 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 10:36:12,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 10:36:12,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 10:36:12,897 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 10:36:12,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:36:12" (1/1) ... [2019-12-07 10:36:12,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:36:12" (1/1) ... [2019-12-07 10:36:12,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:36:12" (1/1) ... [2019-12-07 10:36:12,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:36:12" (1/1) ... [2019-12-07 10:36:12,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:36:12" (1/1) ... [2019-12-07 10:36:12,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:36:12" (1/1) ... [2019-12-07 10:36:12,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:36:12" (1/1) ... [2019-12-07 10:36:12,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 10:36:12,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 10:36:12,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 10:36:12,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 10:36:12,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:36:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f91a194a-0b61-4df6-9f86-6e9c655ab6dc/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 [2019-12-07 10:36:12,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 10:36:12,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-12-07 10:36:12,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 10:36:12,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 10:36:12,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 10:36:12,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-12-07 10:36:12,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-07 10:36:12,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 10:36:13,815 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 10:36:13,815 INFO L287 CfgBuilder]: Removed 14 assume(true) statements. [2019-12-07 10:36:13,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:36:13 BoogieIcfgContainer [2019-12-07 10:36:13,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 10:36:13,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 10:36:13,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 10:36:13,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 10:36:13,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 10:36:12" (1/3) ... [2019-12-07 10:36:13,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13bb2c61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:36:13, skipping insertion in model container [2019-12-07 10:36:13,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:36:12" (2/3) ... [2019-12-07 10:36:13,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13bb2c61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:36:13, skipping insertion in model container [2019-12-07 10:36:13,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:36:13" (3/3) ... [2019-12-07 10:36:13,820 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0710.c [2019-12-07 10:36:13,827 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 10:36:13,832 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 10:36:13,839 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 10:36:13,854 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 10:36:13,854 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 10:36:13,854 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 10:36:13,854 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 10:36:13,854 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 10:36:13,854 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 10:36:13,855 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 10:36:13,855 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 10:36:13,865 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2019-12-07 10:36:13,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 10:36:13,869 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:36:13,869 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:36:13,870 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:36:13,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:36:13,873 INFO L82 PathProgramCache]: Analyzing trace with hash 860611220, now seen corresponding path program 1 times [2019-12-07 10:36:13,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 10:36:13,881 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320733808] [2019-12-07 10:36:13,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f91a194a-0b61-4df6-9f86-6e9c655ab6dc/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 [2019-12-07 10:36:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:36:14,025 INFO L264 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 10:36:14,029 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:36:14,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:36:14,038 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 10:36:14,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:36:14,042 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320733808] [2019-12-07 10:36:14,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:36:14,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 10:36:14,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884924159] [2019-12-07 10:36:14,046 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 10:36:14,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 10:36:14,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 10:36:14,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 10:36:14,057 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2019-12-07 10:36:14,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:36:14,071 INFO L93 Difference]: Finished difference Result 67 states and 102 transitions. [2019-12-07 10:36:14,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 10:36:14,072 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-12-07 10:36:14,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:36:14,080 INFO L225 Difference]: With dead ends: 67 [2019-12-07 10:36:14,080 INFO L226 Difference]: Without dead ends: 31 [2019-12-07 10:36:14,083 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 [2019-12-07 10:36:14,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-12-07 10:36:14,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-12-07 10:36:14,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 10:36:14,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2019-12-07 10:36:14,110 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 10 [2019-12-07 10:36:14,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:36:14,110 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2019-12-07 10:36:14,110 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 10:36:14,110 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2019-12-07 10:36:14,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 10:36:14,111 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:36:14,111 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:36:14,312 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 10:36:14,312 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:36:14,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:36:14,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1279985196, now seen corresponding path program 1 times [2019-12-07 10:36:14,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 10:36:14,316 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126762591] [2019-12-07 10:36:14,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f91a194a-0b61-4df6-9f86-6e9c655ab6dc/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 [2019-12-07 10:36:14,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:36:14,497 INFO L264 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 16 conjunts are in the unsatisfiable core [2019-12-07 10:36:14,499 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:36:23,497 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-12-07 10:36:23,498 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126762591] [2019-12-07 10:36:23,499 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") [2019-12-07 10:36:23,499 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1983317816] [2019-12-07 10:36:23,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f91a194a-0b61-4df6-9f86-6e9c655ab6dc/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 10:36:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:36:23,848 INFO L264 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 15 conjunts are in the unsatisfiable core [2019-12-07 10:36:23,848 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@49322d59 [2019-12-07 10:36:23,849 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907178325] [2019-12-07 10:36:23,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f91a194a-0b61-4df6-9f86-6e9c655ab6dc/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 10:36:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:36:23,948 INFO L264 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 15 conjunts are in the unsatisfiable core [2019-12-07 10:36:23,948 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@49322d59 [2019-12-07 10:36:23,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:36:23,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2019-12-07 10:36:23,949 ERROR L206 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2019-12-07 10:36:23,949 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 10:36:24,554 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk,3 mathsat -unsat_core_generation=3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 10:36:24,571 WARN L229 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2019-12-07 10:36:24,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 10:36:24 BoogieIcfgContainer [2019-12-07 10:36:24,571 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 10:36:24,572 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 10:36:24,572 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 10:36:24,572 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 10:36:24,573 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:36:13" (3/4) ... [2019-12-07 10:36:24,576 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 10:36:24,576 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 10:36:24,578 INFO L168 Benchmark]: Toolchain (without parser) took 11921.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 951.0 MB in the beginning and 1.0 GB in the end (delta: -55.4 MB). Peak memory consumption was 79.9 MB. Max. memory is 11.5 GB. [2019-12-07 10:36:24,578 INFO L168 Benchmark]: CDTParser took 0.14 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. [2019-12-07 10:36:24,579 INFO L168 Benchmark]: CACSL2BoogieTranslator took 177.53 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 934.9 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-12-07 10:36:24,579 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 934.9 MB in the beginning and 1.1 GB in the end (delta: -189.0 MB). Peak memory consumption was 10.3 MB. Max. memory is 11.5 GB. [2019-12-07 10:36:24,580 INFO L168 Benchmark]: Boogie Preprocessor took 27.90 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. [2019-12-07 10:36:24,580 INFO L168 Benchmark]: RCFGBuilder took 891.04 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: 39.0 MB). Peak memory consumption was 39.0 MB. Max. memory is 11.5 GB. [2019-12-07 10:36:24,581 INFO L168 Benchmark]: TraceAbstraction took 10755.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 78.6 MB). Peak memory consumption was 78.6 MB. Max. memory is 11.5 GB. [2019-12-07 10:36:24,581 INFO L168 Benchmark]: Witness Printer took 3.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:36:24,584 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 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 177.53 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 934.9 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 62.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 934.9 MB in the beginning and 1.1 GB in the end (delta: -189.0 MB). Peak memory consumption was 10.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 891.04 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: 39.0 MB). Peak memory consumption was 39.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 10755.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 78.6 MB). Peak memory consumption was 78.6 MB. Max. memory is 11.5 GB. * Witness Printer took 3.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 98]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L15] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L91] float x = __VERIFIER_nondet_float(); [L92] COND TRUE x < -0.0f [L18] float z; [L19] __uint32_t r, hx; [L20] __int32_t ix, s, q, m, t, i; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (ix) = gf_u.word [L27] hx = ix & 0x7fffffff [L29] COND TRUE !((hx) < 0x7f800000L) [L30] return x * x + x; [L94] float res = __ieee754_sqrtf(x); [L13] return x != x; [L97] COND TRUE !isnan_float(res) [L98] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 1 error locations. Result: UNKNOWN, OverallTime: 10.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 162 SizeOfPredicates, 0 NumberOfNonLiveVariables, 24 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...