./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_2_false-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_69ba7856-890f-411e-82d3-11ca6f7c7a5e/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_69ba7856-890f-411e-82d3-11ca6f7c7a5e/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_69ba7856-890f-411e-82d3-11ca6f7c7a5e/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_69ba7856-890f-411e-82d3-11ca6f7c7a5e/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_2_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_69ba7856-890f-411e-82d3-11ca6f7c7a5e/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_69ba7856-890f-411e-82d3-11ca6f7c7a5e/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 30af8e98893bfcc9c7b0879f6e0cde9a5cbf7714 ......................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_69ba7856-890f-411e-82d3-11ca6f7c7a5e/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_69ba7856-890f-411e-82d3-11ca6f7c7a5e/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_69ba7856-890f-411e-82d3-11ca6f7c7a5e/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_69ba7856-890f-411e-82d3-11ca6f7c7a5e/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_2_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_69ba7856-890f-411e-82d3-11ca6f7c7a5e/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_69ba7856-890f-411e-82d3-11ca6f7c7a5e/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 30af8e98893bfcc9c7b0879f6e0cde9a5cbf7714 ........................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 22:15:10,895 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:15:10,897 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:15:10,908 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:15:10,909 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:15:10,910 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:15:10,912 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:15:10,914 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:15:10,916 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:15:10,918 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:15:10,920 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:15:10,920 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:15:10,921 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:15:10,923 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:15:10,930 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:15:10,931 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:15:10,932 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:15:10,933 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:15:10,934 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:15:10,937 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:15:10,940 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:15:10,942 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:15:10,945 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 22:15:10,947 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 22:15:10,948 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 22:15:10,948 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 22:15:10,949 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 22:15:10,950 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 22:15:10,950 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 22:15:10,951 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 22:15:10,951 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 22:15:10,952 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 22:15:10,952 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 22:15:10,952 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 22:15:10,953 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 22:15:10,954 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 22:15:10,955 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_69ba7856-890f-411e-82d3-11ca6f7c7a5e/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-26 22:15:10,965 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:15:10,965 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:15:10,966 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:15:10,966 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 22:15:10,966 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 22:15:10,967 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 22:15:10,967 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 22:15:10,967 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 22:15:10,967 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 22:15:10,967 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 22:15:10,967 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 22:15:10,968 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:15:10,968 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 22:15:10,968 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 22:15:10,968 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 22:15:10,968 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:15:10,969 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:15:10,969 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:15:10,969 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:15:10,971 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 22:15:10,971 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:15:10,971 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:15:10,971 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:15:10,971 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:15:10,972 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:15:10,972 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:15:10,972 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:15:10,972 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:15:10,972 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:15:10,972 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:15:10,972 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 22:15:10,973 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:15:10,973 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 22:15:10,973 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 22:15:10,973 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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/working_dir_69ba7856-890f-411e-82d3-11ca6f7c7a5e/bin-2019/utaipan 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 -> Taipan 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 -> 30af8e98893bfcc9c7b0879f6e0cde9a5cbf7714 [2018-10-26 22:15:11,004 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:15:11,017 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:15:11,020 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:15:11,022 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:15:11,022 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:15:11,023 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_69ba7856-890f-411e-82d3-11ca6f7c7a5e/bin-2019/utaipan/../../sv-benchmarks/c/floats-cdfpl/square_2_false-unreach-call_true-termination.i [2018-10-26 22:15:11,077 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_69ba7856-890f-411e-82d3-11ca6f7c7a5e/bin-2019/utaipan/data/b530d7f20/114864865e6f4730a7607e83b716c063/FLAG163b57125 [2018-10-26 22:15:11,437 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:15:11,438 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_69ba7856-890f-411e-82d3-11ca6f7c7a5e/sv-benchmarks/c/floats-cdfpl/square_2_false-unreach-call_true-termination.i [2018-10-26 22:15:11,444 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_69ba7856-890f-411e-82d3-11ca6f7c7a5e/bin-2019/utaipan/data/b530d7f20/114864865e6f4730a7607e83b716c063/FLAG163b57125 [2018-10-26 22:15:11,457 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_69ba7856-890f-411e-82d3-11ca6f7c7a5e/bin-2019/utaipan/data/b530d7f20/114864865e6f4730a7607e83b716c063 [2018-10-26 22:15:11,461 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:15:11,462 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 22:15:11,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:15:11,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:15:11,467 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:15:11,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:15:11" (1/1) ... [2018-10-26 22:15:11,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48a64ca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:15:11, skipping insertion in model container [2018-10-26 22:15:11,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:15:11" (1/1) ... [2018-10-26 22:15:11,481 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:15:11,499 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:15:11,630 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:15:11,633 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:15:11,648 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:15:11,662 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:15:11,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:15:11 WrapperNode [2018-10-26 22:15:11,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:15:11,663 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 22:15:11,663 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 22:15:11,663 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 22:15:11,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:15:11" (1/1) ... [2018-10-26 22:15:11,679 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:15:11" (1/1) ... [2018-10-26 22:15:11,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 22:15:11,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:15:11,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:15:11,686 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:15:11,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:15:11" (1/1) ... [2018-10-26 22:15:11,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:15:11" (1/1) ... [2018-10-26 22:15:11,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:15:11" (1/1) ... [2018-10-26 22:15:11,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:15:11" (1/1) ... [2018-10-26 22:15:11,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:15:11" (1/1) ... [2018-10-26 22:15:11,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:15:11" (1/1) ... [2018-10-26 22:15:11,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:15:11" (1/1) ... [2018-10-26 22:15:11,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:15:11,704 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:15:11,704 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:15:11,704 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:15:11,705 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:15:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_69ba7856-890f-411e-82d3-11ca6f7c7a5e/bin-2019/utaipan/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 [2018-10-26 22:15:11,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 22:15:11,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 22:15:11,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:15:11,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:15:11,820 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 22:15:11,820 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 22:15:12,056 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:15:12,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:15:12 BoogieIcfgContainer [2018-10-26 22:15:12,057 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:15:12,058 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:15:12,058 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:15:12,062 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:15:12,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:15:11" (1/3) ... [2018-10-26 22:15:12,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bf56978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:15:12, skipping insertion in model container [2018-10-26 22:15:12,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:15:11" (2/3) ... [2018-10-26 22:15:12,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bf56978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:15:12, skipping insertion in model container [2018-10-26 22:15:12,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:15:12" (3/3) ... [2018-10-26 22:15:12,066 INFO L112 eAbstractionObserver]: Analyzing ICFG square_2_false-unreach-call_true-termination.i [2018-10-26 22:15:12,075 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:15:12,082 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:15:12,098 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:15:12,128 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:15:12,129 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:15:12,129 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:15:12,129 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:15:12,129 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:15:12,129 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:15:12,129 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:15:12,129 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:15:12,145 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-10-26 22:15:12,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-26 22:15:12,151 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:15:12,152 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:15:12,155 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:15:12,161 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:15:12,162 INFO L82 PathProgramCache]: Analyzing trace with hash -2109216782, now seen corresponding path program 1 times [2018-10-26 22:15:12,164 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:15:12,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:15:12,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:15:12,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:15:12,215 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:15:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 22:15:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 22:15:12,271 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 22:15:12,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:15:12 BoogieIcfgContainer [2018-10-26 22:15:12,300 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:15:12,300 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 22:15:12,300 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 22:15:12,300 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 22:15:12,301 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:15:12" (3/4) ... [2018-10-26 22:15:12,305 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-26 22:15:12,305 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 22:15:12,306 INFO L168 Benchmark]: Toolchain (without parser) took 845.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 189.3 MB). Free memory was 954.5 MB in the beginning and 1.2 GB in the end (delta: -208.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:15:12,308 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:15:12,308 INFO L168 Benchmark]: CACSL2BoogieTranslator took 199.98 ms. Allocated memory is still 1.0 GB. Free memory was 954.5 MB in the beginning and 943.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 22:15:12,310 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.60 ms. Allocated memory is still 1.0 GB. Free memory is still 943.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:15:12,310 INFO L168 Benchmark]: Boogie Preprocessor took 17.23 ms. Allocated memory is still 1.0 GB. Free memory is still 943.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:15:12,311 INFO L168 Benchmark]: RCFGBuilder took 353.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 189.3 MB). Free memory was 943.7 MB in the beginning and 1.2 GB in the end (delta: -233.5 MB). Peak memory consumption was 23.6 MB. Max. memory is 11.5 GB. [2018-10-26 22:15:12,312 INFO L168 Benchmark]: TraceAbstraction took 241.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. [2018-10-26 22:15:12,313 INFO L168 Benchmark]: Witness Printer took 5.53 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:15:12,318 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 199.98 ms. Allocated memory is still 1.0 GB. Free memory was 954.5 MB in the beginning and 943.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.60 ms. Allocated memory is still 1.0 GB. Free memory is still 943.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.23 ms. Allocated memory is still 1.0 GB. Free memory is still 943.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 353.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 189.3 MB). Free memory was 943.7 MB in the beginning and 1.2 GB in the end (delta: -233.5 MB). Peak memory consumption was 23.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 241.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. * Witness Printer took 5.53 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 14, overapproximation of someBinaryArithmeticFLOAToperation at line 12. Possible FailurePath: [L6] float IN = __VERIFIER_nondet_float(); [L9] float x = IN; [L11-L12] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=0, x=0] [L14] COND TRUE !(result >= 0.0f && result < 1.398f) VAL [IN=0, x=0] [L15] __VERIFIER_error() VAL [IN=0, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: 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 0.1.23-1dbac8b [2018-10-26 22:15:14,450 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:15:14,451 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:15:14,462 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:15:14,462 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:15:14,463 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:15:14,464 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:15:14,466 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:15:14,467 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:15:14,468 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:15:14,469 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:15:14,469 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:15:14,470 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:15:14,471 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:15:14,472 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:15:14,472 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:15:14,474 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:15:14,476 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:15:14,477 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:15:14,479 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:15:14,480 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:15:14,481 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:15:14,483 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 22:15:14,484 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 22:15:14,484 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 22:15:14,485 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 22:15:14,485 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 22:15:14,486 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 22:15:14,487 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 22:15:14,488 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 22:15:14,488 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 22:15:14,488 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 22:15:14,489 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 22:15:14,489 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 22:15:14,491 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 22:15:14,492 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 22:15:14,492 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_69ba7856-890f-411e-82d3-11ca6f7c7a5e/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-10-26 22:15:14,504 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:15:14,504 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:15:14,505 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:15:14,506 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 22:15:14,506 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 22:15:14,506 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 22:15:14,506 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 22:15:14,506 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 22:15:14,507 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:15:14,507 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 22:15:14,507 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 22:15:14,507 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:15:14,508 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:15:14,508 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:15:14,508 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:15:14,508 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-26 22:15:14,508 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-26 22:15:14,508 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 22:15:14,508 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:15:14,509 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:15:14,509 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:15:14,511 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:15:14,511 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:15:14,511 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:15:14,511 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:15:14,512 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:15:14,512 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:15:14,512 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:15:14,513 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-10-26 22:15:14,514 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:15:14,514 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-26 22:15:14,514 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-26 22:15:14,514 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_69ba7856-890f-411e-82d3-11ca6f7c7a5e/bin-2019/utaipan 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 -> Taipan 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 -> 30af8e98893bfcc9c7b0879f6e0cde9a5cbf7714 [2018-10-26 22:15:14,556 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:15:14,570 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:15:14,573 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:15:14,574 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:15:14,574 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:15:14,575 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_69ba7856-890f-411e-82d3-11ca6f7c7a5e/bin-2019/utaipan/../../sv-benchmarks/c/floats-cdfpl/square_2_false-unreach-call_true-termination.i [2018-10-26 22:15:14,623 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_69ba7856-890f-411e-82d3-11ca6f7c7a5e/bin-2019/utaipan/data/4db47a544/6dc6ab350bbd4d28969f64e8d9c1b794/FLAGaf3a72dc2 [2018-10-26 22:15:14,963 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:15:14,964 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_69ba7856-890f-411e-82d3-11ca6f7c7a5e/sv-benchmarks/c/floats-cdfpl/square_2_false-unreach-call_true-termination.i [2018-10-26 22:15:14,969 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_69ba7856-890f-411e-82d3-11ca6f7c7a5e/bin-2019/utaipan/data/4db47a544/6dc6ab350bbd4d28969f64e8d9c1b794/FLAGaf3a72dc2 [2018-10-26 22:15:14,984 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_69ba7856-890f-411e-82d3-11ca6f7c7a5e/bin-2019/utaipan/data/4db47a544/6dc6ab350bbd4d28969f64e8d9c1b794 [2018-10-26 22:15:14,990 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:15:14,992 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 22:15:14,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:15:14,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:15:14,996 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:15:14,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:15:14" (1/1) ... [2018-10-26 22:15:14,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@470950e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:15:14, skipping insertion in model container [2018-10-26 22:15:14,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:15:14" (1/1) ... [2018-10-26 22:15:15,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:15:15,025 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:15:15,190 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:15:15,195 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:15:15,215 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:15:15,231 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:15:15,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:15:15 WrapperNode [2018-10-26 22:15:15,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:15:15,232 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 22:15:15,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 22:15:15,232 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 22:15:15,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:15:15" (1/1) ... [2018-10-26 22:15:15,249 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:15:15" (1/1) ... [2018-10-26 22:15:15,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 22:15:15,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:15:15,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:15:15,256 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:15:15,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:15:15" (1/1) ... [2018-10-26 22:15:15,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:15:15" (1/1) ... [2018-10-26 22:15:15,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:15:15" (1/1) ... [2018-10-26 22:15:15,267 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:15:15" (1/1) ... [2018-10-26 22:15:15,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:15:15" (1/1) ... [2018-10-26 22:15:15,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:15:15" (1/1) ... [2018-10-26 22:15:15,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:15:15" (1/1) ... [2018-10-26 22:15:15,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:15:15,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:15:15,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:15:15,283 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:15:15,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:15:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_69ba7856-890f-411e-82d3-11ca6f7c7a5e/bin-2019/utaipan/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 [2018-10-26 22:15:15,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 22:15:15,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 22:15:15,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:15:15,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:15:15,344 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 22:15:15,344 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 22:15:17,616 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:15:17,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:15:17 BoogieIcfgContainer [2018-10-26 22:15:17,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:15:17,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:15:17,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:15:17,621 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:15:17,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:15:14" (1/3) ... [2018-10-26 22:15:17,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41266ae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:15:17, skipping insertion in model container [2018-10-26 22:15:17,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:15:15" (2/3) ... [2018-10-26 22:15:17,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41266ae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:15:17, skipping insertion in model container [2018-10-26 22:15:17,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:15:17" (3/3) ... [2018-10-26 22:15:17,625 INFO L112 eAbstractionObserver]: Analyzing ICFG square_2_false-unreach-call_true-termination.i [2018-10-26 22:15:17,636 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:15:17,645 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:15:17,662 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:15:17,688 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 22:15:17,689 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:15:17,689 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:15:17,689 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:15:17,690 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:15:17,690 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:15:17,690 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:15:17,691 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:15:17,691 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:15:17,707 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-10-26 22:15:17,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-26 22:15:17,713 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:15:17,714 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:15:17,716 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:15:17,722 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:15:17,722 INFO L82 PathProgramCache]: Analyzing trace with hash -2109216782, now seen corresponding path program 1 times [2018-10-26 22:15:17,727 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 22:15:17,728 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_69ba7856-890f-411e-82d3-11ca6f7c7a5e/bin-2019/utaipan/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 [2018-10-26 22:15:17,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:15:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 22:15:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 22:15:36,206 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 22:15:36,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:15:36 BoogieIcfgContainer [2018-10-26 22:15:36,239 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:15:36,240 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 22:15:36,241 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 22:15:36,241 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 22:15:36,242 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:15:17" (3/4) ... [2018-10-26 22:15:36,245 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-26 22:15:36,293 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_69ba7856-890f-411e-82d3-11ca6f7c7a5e/bin-2019/utaipan/witness.graphml [2018-10-26 22:15:36,294 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 22:15:36,295 INFO L168 Benchmark]: Toolchain (without parser) took 21303.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 954.6 MB in the beginning and 1.1 GB in the end (delta: -163.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:15:36,296 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:15:36,297 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.01 ms. Allocated memory is still 1.0 GB. Free memory was 954.6 MB in the beginning and 942.5 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-10-26 22:15:36,297 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.38 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:15:36,298 INFO L168 Benchmark]: Boogie Preprocessor took 27.11 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 937.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-26 22:15:36,298 INFO L168 Benchmark]: RCFGBuilder took 2333.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -199.4 MB). Peak memory consumption was 21.6 MB. Max. memory is 11.5 GB. [2018-10-26 22:15:36,299 INFO L168 Benchmark]: TraceAbstraction took 18622.00 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: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2018-10-26 22:15:36,300 INFO L168 Benchmark]: Witness Printer took 53.96 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. [2018-10-26 22:15:36,304 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 239.01 ms. Allocated memory is still 1.0 GB. Free memory was 954.6 MB in the beginning and 942.5 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 23.38 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.11 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 937.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2333.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -199.4 MB). Peak memory consumption was 21.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 18622.00 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: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Witness Printer took 53.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L6] float IN = __VERIFIER_nondet_float(); [L9] float x = IN; [L11-L12] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=0.999995768070221, result=1.3984363079071045, x=0.999995768070221] [L14] COND TRUE !(result >= 0.0f && result < 1.398f) VAL [IN=0.999995768070221, result=1.3984363079071045, x=0.999995768070221] [L15] __VERIFIER_error() VAL [IN=0.999995768070221, result=1.3984363079071045, x=0.999995768070221] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. UNSAFE Result, 18.5s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 14.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...