./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0930.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_ab6fb1a9-260b-4b9e-bef2-3115c117dfce/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_ab6fb1a9-260b-4b9e-bef2-3115c117dfce/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ab6fb1a9-260b-4b9e-bef2-3115c117dfce/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ab6fb1a9-260b-4b9e-bef2-3115c117dfce/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0930.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ab6fb1a9-260b-4b9e-bef2-3115c117dfce/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ab6fb1a9-260b-4b9e-bef2-3115c117dfce/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 8d1cc22c86ec678ca6c8e47fb3affd89f077aca1 ........................................................................................................................................................................................................................................................................................ 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_ab6fb1a9-260b-4b9e-bef2-3115c117dfce/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_ab6fb1a9-260b-4b9e-bef2-3115c117dfce/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ab6fb1a9-260b-4b9e-bef2-3115c117dfce/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ab6fb1a9-260b-4b9e-bef2-3115c117dfce/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0930.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ab6fb1a9-260b-4b9e-bef2-3115c117dfce/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ab6fb1a9-260b-4b9e-bef2-3115c117dfce/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 8d1cc22c86ec678ca6c8e47fb3affd89f077aca1 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 17:00:02,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:00:02,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:00:03,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:00:03,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:00:03,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:00:03,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:00:03,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:00:03,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:00:03,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:00:03,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:00:03,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:00:03,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:00:03,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:00:03,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:00:03,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:00:03,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:00:03,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:00:03,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:00:03,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:00:03,026 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:00:03,027 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:00:03,028 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:00:03,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:00:03,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:00:03,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:00:03,031 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:00:03,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:00:03,032 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:00:03,033 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:00:03,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:00:03,033 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:00:03,034 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:00:03,035 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:00:03,035 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:00:03,036 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:00:03,036 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:00:03,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:00:03,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:00:03,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:00:03,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:00:03,038 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ab6fb1a9-260b-4b9e-bef2-3115c117dfce/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 17:00:03,047 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:00:03,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:00:03,048 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:00:03,048 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:00:03,049 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:00:03,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:00:03,049 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 17:00:03,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 17:00:03,049 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 17:00:03,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:00:03,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 17:00:03,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 17:00:03,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 17:00:03,050 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 17:00:03,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 17:00:03,050 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:00:03,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 17:00:03,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:00:03,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:00:03,050 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 17:00:03,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 17:00:03,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 17:00:03,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:00:03,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 17:00:03,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 17:00:03,051 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 17:00:03,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 17:00:03,051 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 17:00:03,051 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:00:03,051 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_ab6fb1a9-260b-4b9e-bef2-3115c117dfce/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 -> 8d1cc22c86ec678ca6c8e47fb3affd89f077aca1 [2019-12-07 17:00:03,156 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:00:03,166 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:00:03,169 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:00:03,170 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:00:03,171 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:00:03,171 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ab6fb1a9-260b-4b9e-bef2-3115c117dfce/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_0930.c [2019-12-07 17:00:03,215 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ab6fb1a9-260b-4b9e-bef2-3115c117dfce/bin/uautomizer/data/ac5fb519e/303e132be664414bb369cd53eaa6edee/FLAG803db8848 [2019-12-07 17:00:03,634 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:00:03,634 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ab6fb1a9-260b-4b9e-bef2-3115c117dfce/sv-benchmarks/c/float-newlib/float_req_bl_0930.c [2019-12-07 17:00:03,639 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ab6fb1a9-260b-4b9e-bef2-3115c117dfce/bin/uautomizer/data/ac5fb519e/303e132be664414bb369cd53eaa6edee/FLAG803db8848 [2019-12-07 17:00:03,648 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ab6fb1a9-260b-4b9e-bef2-3115c117dfce/bin/uautomizer/data/ac5fb519e/303e132be664414bb369cd53eaa6edee [2019-12-07 17:00:03,650 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:00:03,651 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 17:00:03,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:00:03,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:00:03,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:00:03,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:00:03" (1/1) ... [2019-12-07 17:00:03,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17574348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:00:03, skipping insertion in model container [2019-12-07 17:00:03,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:00:03" (1/1) ... [2019-12-07 17:00:03,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:00:03,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:00:03,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:00:03,836 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:00:03,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:00:03,876 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:00:03,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:00:03 WrapperNode [2019-12-07 17:00:03,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:00:03,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 17:00:03,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 17:00:03,877 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 17:00:03,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:00:03" (1/1) ... [2019-12-07 17:00:03,889 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:00:03" (1/1) ... [2019-12-07 17:00:03,906 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 17:00:03,906 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:00:03,906 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:00:03,906 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:00:03,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:00:03" (1/1) ... [2019-12-07 17:00:03,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:00:03" (1/1) ... [2019-12-07 17:00:03,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:00:03" (1/1) ... [2019-12-07 17:00:03,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:00:03" (1/1) ... [2019-12-07 17:00:03,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:00:03" (1/1) ... [2019-12-07 17:00:03,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:00:03" (1/1) ... [2019-12-07 17:00:03,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:00:03" (1/1) ... [2019-12-07 17:00:03,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:00:03,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:00:03,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:00:03,929 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:00:03,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:00:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab6fb1a9-260b-4b9e-bef2-3115c117dfce/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 17:00:03,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 17:00:03,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-12-07 17:00:03,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 17:00:03,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 17:00:03,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:00:03,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:00:03,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 17:00:03,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 17:00:04,165 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:00:04,165 INFO L287 CfgBuilder]: Removed 16 assume(true) statements. [2019-12-07 17:00:04,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:00:04 BoogieIcfgContainer [2019-12-07 17:00:04,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:00:04,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 17:00:04,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 17:00:04,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 17:00:04,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 05:00:03" (1/3) ... [2019-12-07 17:00:04,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2dd10a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:00:04, skipping insertion in model container [2019-12-07 17:00:04,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:00:03" (2/3) ... [2019-12-07 17:00:04,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2dd10a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:00:04, skipping insertion in model container [2019-12-07 17:00:04,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:00:04" (3/3) ... [2019-12-07 17:00:04,170 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0930.c [2019-12-07 17:00:04,177 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 17:00:04,181 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 17:00:04,188 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 17:00:04,204 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 17:00:04,204 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 17:00:04,204 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 17:00:04,204 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:00:04,204 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:00:04,204 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 17:00:04,204 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:00:04,204 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 17:00:04,214 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-12-07 17:00:04,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 17:00:04,217 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:00:04,218 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:00:04,218 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:00:04,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:00:04,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1904085918, now seen corresponding path program 1 times [2019-12-07 17:00:04,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:00:04,227 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644500313] [2019-12-07 17:00:04,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:00:04,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:00:04,315 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 17:00:04,315 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644500313] [2019-12-07 17:00:04,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:00:04,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 17:00:04,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287770567] [2019-12-07 17:00:04,319 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 17:00:04,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:00:04,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 17:00:04,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 17:00:04,329 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2019-12-07 17:00:04,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:00:04,341 INFO L93 Difference]: Finished difference Result 66 states and 106 transitions. [2019-12-07 17:00:04,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 17:00:04,342 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-12-07 17:00:04,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:00:04,349 INFO L225 Difference]: With dead ends: 66 [2019-12-07 17:00:04,349 INFO L226 Difference]: Without dead ends: 31 [2019-12-07 17:00:04,351 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 17:00:04,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-12-07 17:00:04,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-12-07 17:00:04,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 17:00:04,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-12-07 17:00:04,374 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 9 [2019-12-07 17:00:04,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:00:04,374 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-12-07 17:00:04,374 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 17:00:04,374 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-12-07 17:00:04,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 17:00:04,374 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:00:04,375 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:00:04,375 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:00:04,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:00:04,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1484264895, now seen corresponding path program 1 times [2019-12-07 17:00:04,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:00:04,375 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885911650] [2019-12-07 17:00:04,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:00:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:00:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:00:04,427 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:00:04,427 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 17:00:04,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 05:00:04 BoogieIcfgContainer [2019-12-07 17:00:04,449 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 17:00:04,450 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:00:04,450 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:00:04,450 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:00:04,450 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:00:04" (3/4) ... [2019-12-07 17:00:04,452 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 17:00:04,453 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:00:04,454 INFO L168 Benchmark]: Toolchain (without parser) took 803.06 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 947.9 MB in the beginning and 1.0 GB in the end (delta: -89.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2019-12-07 17:00:04,454 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 964.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:00:04,455 INFO L168 Benchmark]: CACSL2BoogieTranslator took 225.42 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -149.6 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-12-07 17:00:04,455 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.37 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 17:00:04,456 INFO L168 Benchmark]: Boogie Preprocessor took 21.92 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:00:04,456 INFO L168 Benchmark]: RCFGBuilder took 237.88 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: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. [2019-12-07 17:00:04,457 INFO L168 Benchmark]: TraceAbstraction took 282.62 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 17:00:04,457 INFO L168 Benchmark]: Witness Printer took 2.97 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 17:00:04,459 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 964.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 225.42 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -149.6 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.37 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. * Boogie Preprocessor took 21.92 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 237.88 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: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 282.62 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 2.97 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: 121]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 120, overapproximation of someBinaryArithmeticFLOAToperation at line 32, overapproximation of bitwiseAnd at line 31. Possible FailurePath: [L12-L16] static const float ln2_hi_log = 6.9313812256e-01, ln2_lo_log = 9.0580006145e-06, two25_log = 3.355443200e+07, Lg1_log = 6.6666668653e-01, Lg2_log = 4.0000000596e-01, Lg3_log = 2.8571429849e-01, Lg4_log = 2.2222198546e-01, Lg5_log = 1.8183572590e-01, Lg6_log = 1.5313838422e-01, Lg7_log = 1.4798198640e-01; [L18] static const float zero_log = 0.0; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L116] float x = 1.0f; [L21] float hfsq, f, s, z, R, w, t1, t2, dk; [L22] __int32_t k, ix, i, j; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L25] ieee_float_shape_type gf_u; [L26] gf_u.value = (x) [L27] EXPR gf_u.word [L27] (ix) = gf_u.word [L30] k = 0 VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L31] COND TRUE ((ix & 0x7fffffff) == 0) [L32] return -two25_log / zero_log; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L117] float res = __ieee754_logf(x); [L120] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L120] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L121] __VERIFIER_error() VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 45 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=34occurred 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, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 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 17:00:05,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:00:05,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:00:05,798 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:00:05,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:00:05,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:00:05,800 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:00:05,801 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:00:05,803 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:00:05,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:00:05,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:00:05,805 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:00:05,805 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:00:05,805 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:00:05,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:00:05,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:00:05,807 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:00:05,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:00:05,809 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:00:05,811 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:00:05,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:00:05,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:00:05,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:00:05,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:00:05,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:00:05,816 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:00:05,816 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:00:05,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:00:05,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:00:05,818 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:00:05,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:00:05,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:00:05,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:00:05,819 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:00:05,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:00:05,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:00:05,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:00:05,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:00:05,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:00:05,822 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:00:05,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:00:05,823 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ab6fb1a9-260b-4b9e-bef2-3115c117dfce/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 17:00:05,832 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:00:05,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:00:05,833 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:00:05,834 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:00:05,834 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:00:05,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:00:05,834 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 17:00:05,834 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 17:00:05,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:00:05,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 17:00:05,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 17:00:05,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 17:00:05,835 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 17:00:05,835 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 17:00:05,835 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 17:00:05,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 17:00:05,835 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:00:05,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 17:00:05,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:00:05,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:00:05,836 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 17:00:05,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 17:00:05,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 17:00:05,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:00:05,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 17:00:05,836 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 17:00:05,837 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 17:00:05,837 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 17:00:05,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 17:00:05,837 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:00:05,837 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 17:00:05,837 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_ab6fb1a9-260b-4b9e-bef2-3115c117dfce/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 -> 8d1cc22c86ec678ca6c8e47fb3affd89f077aca1 [2019-12-07 17:00:06,007 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:00:06,017 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:00:06,019 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:00:06,021 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:00:06,021 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:00:06,022 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ab6fb1a9-260b-4b9e-bef2-3115c117dfce/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_0930.c [2019-12-07 17:00:06,069 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ab6fb1a9-260b-4b9e-bef2-3115c117dfce/bin/uautomizer/data/9d7eb9927/1a39358b188e47538e98f4de4d0a84d4/FLAG6748a4c6d [2019-12-07 17:00:06,408 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:00:06,408 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ab6fb1a9-260b-4b9e-bef2-3115c117dfce/sv-benchmarks/c/float-newlib/float_req_bl_0930.c [2019-12-07 17:00:06,413 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ab6fb1a9-260b-4b9e-bef2-3115c117dfce/bin/uautomizer/data/9d7eb9927/1a39358b188e47538e98f4de4d0a84d4/FLAG6748a4c6d [2019-12-07 17:00:06,421 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ab6fb1a9-260b-4b9e-bef2-3115c117dfce/bin/uautomizer/data/9d7eb9927/1a39358b188e47538e98f4de4d0a84d4 [2019-12-07 17:00:06,423 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:00:06,424 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 17:00:06,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:00:06,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:00:06,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:00:06,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:00:06" (1/1) ... [2019-12-07 17:00:06,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31403813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:00:06, skipping insertion in model container [2019-12-07 17:00:06,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:00:06" (1/1) ... [2019-12-07 17:00:06,434 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:00:06,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:00:06,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:00:06,577 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:00:06,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:00:06,655 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:00:06,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:00:06 WrapperNode [2019-12-07 17:00:06,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:00:06,656 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 17:00:06,656 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 17:00:06,656 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 17:00:06,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:00:06" (1/1) ... [2019-12-07 17:00:06,670 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:00:06" (1/1) ... [2019-12-07 17:00:06,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 17:00:06,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:00:06,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:00:06,688 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:00:06,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:00:06" (1/1) ... [2019-12-07 17:00:06,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:00:06" (1/1) ... [2019-12-07 17:00:06,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:00:06" (1/1) ... [2019-12-07 17:00:06,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:00:06" (1/1) ... [2019-12-07 17:00:06,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:00:06" (1/1) ... [2019-12-07 17:00:06,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:00:06" (1/1) ... [2019-12-07 17:00:06,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:00:06" (1/1) ... [2019-12-07 17:00:06,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:00:06,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:00:06,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:00:06,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:00:06,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:00:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab6fb1a9-260b-4b9e-bef2-3115c117dfce/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 17:00:06,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 17:00:06,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-12-07 17:00:06,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 17:00:06,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:00:06,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:00:06,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-12-07 17:00:06,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-07 17:00:06,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 17:00:18,216 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:00:18,217 INFO L287 CfgBuilder]: Removed 16 assume(true) statements. [2019-12-07 17:00:18,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:00:18 BoogieIcfgContainer [2019-12-07 17:00:18,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:00:18,218 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 17:00:18,218 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 17:00:18,220 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 17:00:18,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 05:00:06" (1/3) ... [2019-12-07 17:00:18,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c8a5b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:00:18, skipping insertion in model container [2019-12-07 17:00:18,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:00:06" (2/3) ... [2019-12-07 17:00:18,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c8a5b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:00:18, skipping insertion in model container [2019-12-07 17:00:18,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:00:18" (3/3) ... [2019-12-07 17:00:18,222 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0930.c [2019-12-07 17:00:18,228 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 17:00:18,233 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 17:00:18,239 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 17:00:18,254 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 17:00:18,254 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 17:00:18,254 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 17:00:18,254 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:00:18,254 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:00:18,254 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 17:00:18,254 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:00:18,254 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 17:00:18,263 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-12-07 17:00:18,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 17:00:18,267 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:00:18,268 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:00:18,268 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:00:18,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:00:18,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1904085918, now seen corresponding path program 1 times [2019-12-07 17:00:18,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 17:00:18,279 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [651636416] [2019-12-07 17:00:18,279 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab6fb1a9-260b-4b9e-bef2-3115c117dfce/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 17:00:18,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:00:18,729 INFO L264 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 17:00:18,733 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:00:18,742 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 17:00:18,742 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 17:00:18,745 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 17:00:18,745 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [651636416] [2019-12-07 17:00:18,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:00:18,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 17:00:18,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236391808] [2019-12-07 17:00:18,749 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 17:00:18,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 17:00:18,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 17:00:18,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 17:00:18,760 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2019-12-07 17:00:18,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:00:18,773 INFO L93 Difference]: Finished difference Result 66 states and 106 transitions. [2019-12-07 17:00:18,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 17:00:18,773 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-12-07 17:00:18,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:00:18,780 INFO L225 Difference]: With dead ends: 66 [2019-12-07 17:00:18,781 INFO L226 Difference]: Without dead ends: 31 [2019-12-07 17:00:18,783 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 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 17:00:18,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-12-07 17:00:18,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-12-07 17:00:18,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 17:00:18,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-12-07 17:00:18,807 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 9 [2019-12-07 17:00:18,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:00:18,807 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-12-07 17:00:18,807 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 17:00:18,807 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-12-07 17:00:18,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 17:00:18,808 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:00:18,808 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:00:19,009 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 17:00:19,009 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:00:19,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:00:19,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1484264895, now seen corresponding path program 1 times [2019-12-07 17:00:19,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 17:00:19,012 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894256105] [2019-12-07 17:00:19,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab6fb1a9-260b-4b9e-bef2-3115c117dfce/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 17:00:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:00:19,492 INFO L264 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 17:00:19,494 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:00:19,530 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 17:00:19,530 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 17:00:19,566 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 17:00:19,566 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1894256105] [2019-12-07 17:00:19,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:00:19,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 17:00:19,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561478032] [2019-12-07 17:00:19,568 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 17:00:19,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 17:00:19,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 17:00:19,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 17:00:19,569 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 6 states. [2019-12-07 17:00:22,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:00:22,189 INFO L93 Difference]: Finished difference Result 60 states and 78 transitions. [2019-12-07 17:00:22,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 17:00:22,319 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-12-07 17:00:22,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:00:22,319 INFO L225 Difference]: With dead ends: 60 [2019-12-07 17:00:22,320 INFO L226 Difference]: Without dead ends: 38 [2019-12-07 17:00:22,321 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 17:00:22,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-12-07 17:00:22,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 29. [2019-12-07 17:00:22,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-12-07 17:00:22,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2019-12-07 17:00:22,325 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 10 [2019-12-07 17:00:22,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:00:22,325 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2019-12-07 17:00:22,326 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 17:00:22,326 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2019-12-07 17:00:22,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-07 17:00:22,326 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:00:22,327 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] [2019-12-07 17:00:22,527 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 17:00:22,528 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:00:22,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:00:22,529 INFO L82 PathProgramCache]: Analyzing trace with hash 933425138, now seen corresponding path program 1 times [2019-12-07 17:00:22,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 17:00:22,530 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790409097] [2019-12-07 17:00:22,530 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab6fb1a9-260b-4b9e-bef2-3115c117dfce/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 [2019-12-07 17:00:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:00:22,903 INFO L264 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 17:00:22,904 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:00:22,948 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:00:22,966 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 17:00:22,967 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 17:00:22,968 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:00:22,999 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 17:00:22,999 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790409097] [2019-12-07 17:00:22,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:00:23,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 17:00:23,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839095115] [2019-12-07 17:00:23,000 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 17:00:23,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 17:00:23,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 17:00:23,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-12-07 17:00:23,001 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand 7 states. [2019-12-07 17:00:33,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:00:33,123 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2019-12-07 17:00:33,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 17:00:33,123 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2019-12-07 17:00:33,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:00:33,124 INFO L225 Difference]: With dead ends: 41 [2019-12-07 17:00:33,124 INFO L226 Difference]: Without dead ends: 38 [2019-12-07 17:00:33,125 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-12-07 17:00:33,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-12-07 17:00:33,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2019-12-07 17:00:33,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 17:00:33,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2019-12-07 17:00:33,129 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 20 [2019-12-07 17:00:33,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:00:33,129 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2019-12-07 17:00:33,129 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 17:00:33,129 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2019-12-07 17:00:33,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-07 17:00:33,130 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:00:33,130 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] [2019-12-07 17:00:33,330 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 17:00:33,331 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:00:33,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:00:33,332 INFO L82 PathProgramCache]: Analyzing trace with hash 935272180, now seen corresponding path program 1 times [2019-12-07 17:00:33,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 17:00:33,332 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1238915311] [2019-12-07 17:00:33,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab6fb1a9-260b-4b9e-bef2-3115c117dfce/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 [2019-12-07 17:00:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:00:33,808 INFO L264 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 17:00:33,810 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:00:33,926 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 17:00:33,927 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 17:00:34,079 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 17:00:34,080 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1238915311] [2019-12-07 17:00:34,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:00:34,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2019-12-07 17:00:34,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068655119] [2019-12-07 17:00:34,080 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 17:00:34,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 17:00:34,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 17:00:34,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-12-07 17:00:34,081 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand 12 states. [2019-12-07 17:00:46,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:00:46,743 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2019-12-07 17:00:46,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 17:00:46,759 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 20 [2019-12-07 17:00:46,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:00:46,760 INFO L225 Difference]: With dead ends: 58 [2019-12-07 17:00:46,760 INFO L226 Difference]: Without dead ends: 49 [2019-12-07 17:00:46,761 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2019-12-07 17:00:46,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-12-07 17:00:46,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 31. [2019-12-07 17:00:46,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 17:00:46,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2019-12-07 17:00:46,766 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 20 [2019-12-07 17:00:46,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:00:46,767 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2019-12-07 17:00:46,767 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 17:00:46,767 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2019-12-07 17:00:46,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-07 17:00:46,767 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:00:46,768 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] [2019-12-07 17:00:46,968 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-12-07 17:00:46,969 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:00:46,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:00:46,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1140293842, now seen corresponding path program 1 times [2019-12-07 17:00:46,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 17:00:46,970 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329386468] [2019-12-07 17:00:46,971 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab6fb1a9-260b-4b9e-bef2-3115c117dfce/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 [2019-12-07 17:00:47,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:00:47,535 INFO L264 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-07 17:00:47,538 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:00:47,676 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 17:00:47,676 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 17:00:48,863 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2019-12-07 17:00:58,479 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-12-07 17:00:58,480 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1329386468] [2019-12-07 17:00:58,480 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 17:00:58,480 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [910459855] [2019-12-07 17:00:58,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab6fb1a9-260b-4b9e-bef2-3115c117dfce/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 17:01:00,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:01:00,147 INFO L264 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 16 conjunts are in the unsatisfiable core [2019-12-07 17:01:00,147 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@5661ea36 [2019-12-07 17:01:00,148 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300753313] [2019-12-07 17:01:00,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab6fb1a9-260b-4b9e-bef2-3115c117dfce/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:01:00,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:01:00,324 INFO L264 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 17:01:00,324 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@5661ea36 [2019-12-07 17:01:00,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:01:00,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2019-12-07 17:01:00,325 ERROR L206 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2019-12-07 17:01:00,325 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 17:01:00,928 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 mathsat -unsat_core_generation=3,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:01:00,943 WARN L229 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2019-12-07 17:01:00,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 05:01:00 BoogieIcfgContainer [2019-12-07 17:01:00,943 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 17:01:00,943 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:01:00,943 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:01:00,943 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:01:00,944 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:00:18" (3/4) ... [2019-12-07 17:01:00,946 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 17:01:00,946 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:01:00,947 INFO L168 Benchmark]: Toolchain (without parser) took 54522.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 952.4 MB in the beginning and 866.9 MB in the end (delta: 85.4 MB). Peak memory consumption was 221.8 MB. Max. memory is 11.5 GB. [2019-12-07 17:01:00,947 INFO L168 Benchmark]: CDTParser took 0.18 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 17:01:00,948 INFO L168 Benchmark]: CACSL2BoogieTranslator took 231.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -172.7 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2019-12-07 17:01:00,948 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.09 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 17:01:00,948 INFO L168 Benchmark]: Boogie Preprocessor took 29.86 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-12-07 17:01:00,949 INFO L168 Benchmark]: RCFGBuilder took 11499.45 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: 35.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 11.5 GB. [2019-12-07 17:01:00,949 INFO L168 Benchmark]: TraceAbstraction took 42724.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 873.8 MB in the end (delta: 208.6 MB). Peak memory consumption was 208.6 MB. Max. memory is 11.5 GB. [2019-12-07 17:01:00,949 INFO L168 Benchmark]: Witness Printer took 2.66 ms. Allocated memory is still 1.2 GB. Free memory was 873.8 MB in the beginning and 866.9 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-12-07 17:01:00,951 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 231.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -172.7 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.09 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 29.86 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 11499.45 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: 35.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 42724.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 873.8 MB in the end (delta: 208.6 MB). Peak memory consumption was 208.6 MB. Max. memory is 11.5 GB. * Witness Printer took 2.66 ms. Allocated memory is still 1.2 GB. Free memory was 873.8 MB in the beginning and 866.9 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 121]: 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: [L12-L16] static const float ln2_hi_log = 6.9313812256e-01, ln2_lo_log = 9.0580006145e-06, two25_log = 3.355443200e+07, Lg1_log = 6.6666668653e-01, Lg2_log = 4.0000000596e-01, Lg3_log = 2.8571429849e-01, Lg4_log = 2.2222198546e-01, Lg5_log = 1.8183572590e-01, Lg6_log = 1.5313838422e-01, Lg7_log = 1.4798198640e-01; [L18] static const float zero_log = 0.0; [L116] float x = 1.0f; [L21] float hfsq, f, s, z, R, w, t1, t2, dk; [L22] __int32_t k, ix, i, j; [L25] ieee_float_shape_type gf_u; [L26] gf_u.value = (x) [L27] EXPR gf_u.word [L27] (ix) = gf_u.word [L30] k = 0 [L31] COND FALSE !(((ix & 0x7fffffff) == 0)) [L33] COND FALSE !(ix < 0) [L35] COND FALSE !(!((ix) < 0x7f800000L)) [L37] COND FALSE !(((ix) < 0x00800000L)) [L46] k += (ix >> 23) - 127 [L47] ix &= 0x007fffff [L48] i = (ix + (0x95f64 << 3)) & 0x800000 [L50] ieee_float_shape_type sf_u; [L51] sf_u.word = (ix | (i ^ 0x3f800000)) [L52] EXPR sf_u.value [L52] (x) = sf_u.value [L54] k += (i >> 23) [L55] f = x - (float)1.0 [L56] COND TRUE (0x007fffff & (15 + ix)) < 16 [L57] COND FALSE !(f == zero_log) [L65] R = f * f * ((float)0.5 - (float)0.33333333333333333 * f) [L66] COND TRUE k == 0 [L67] return f - R; [L117] float res = __ieee754_logf(x); [L120] EXPR res == 0.0f && __signbit_float(res) == 0 [L120] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L121] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 1 error locations. Result: UNKNOWN, OverallTime: 42.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 25.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 140 SDtfs, 161 SDslu, 310 SDs, 0 SdLazy, 103 SolverSat, 15 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 24.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 118 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 34 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 110 ConstructedInterpolants, 36 QuantifiedInterpolants, 12890 SizeOfPredicates, 20 NumberOfNonLiveVariables, 189 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, 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...