./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_5_true-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_8d757377-b3cf-49cd-ab10-9d905e399344/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8d757377-b3cf-49cd-ab10-9d905e399344/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8d757377-b3cf-49cd-ab10-9d905e399344/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8d757377-b3cf-49cd-ab10-9d905e399344/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_5_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_8d757377-b3cf-49cd-ab10-9d905e399344/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8d757377-b3cf-49cd-ab10-9d905e399344/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 90d9d5110e72847827a8a4de1ec9da2f4a9a1545 .......................................................................................................................................................................................................................................... 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_8d757377-b3cf-49cd-ab10-9d905e399344/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8d757377-b3cf-49cd-ab10-9d905e399344/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8d757377-b3cf-49cd-ab10-9d905e399344/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8d757377-b3cf-49cd-ab10-9d905e399344/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_5_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_8d757377-b3cf-49cd-ab10-9d905e399344/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8d757377-b3cf-49cd-ab10-9d905e399344/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 90d9d5110e72847827a8a4de1ec9da2f4a9a1545 ........................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-27 01:07:02,904 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 01:07:02,905 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 01:07:02,914 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 01:07:02,915 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 01:07:02,915 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 01:07:02,917 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 01:07:02,919 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 01:07:02,920 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 01:07:02,921 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 01:07:02,921 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 01:07:02,921 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 01:07:02,922 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 01:07:02,928 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 01:07:02,929 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 01:07:02,930 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 01:07:02,930 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 01:07:02,941 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 01:07:02,945 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 01:07:02,946 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 01:07:02,947 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 01:07:02,950 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 01:07:02,952 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 01:07:02,953 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 01:07:02,953 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 01:07:02,953 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 01:07:02,954 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 01:07:02,955 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 01:07:02,955 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 01:07:02,960 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 01:07:02,961 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 01:07:02,962 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 01:07:02,962 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 01:07:02,962 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 01:07:02,963 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 01:07:02,963 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 01:07:02,963 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8d757377-b3cf-49cd-ab10-9d905e399344/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-27 01:07:02,982 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 01:07:02,985 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 01:07:02,986 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 01:07:02,986 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 01:07:02,986 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 01:07:02,986 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 01:07:02,986 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 01:07:02,986 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 01:07:02,987 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 01:07:02,987 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 01:07:02,987 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 01:07:02,987 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 01:07:02,987 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-27 01:07:02,987 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 01:07:02,988 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-27 01:07:02,988 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 01:07:02,988 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 01:07:02,988 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 01:07:02,988 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 01:07:02,988 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-27 01:07:02,988 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 01:07:02,988 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 01:07:02,989 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 01:07:02,989 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 01:07:02,989 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 01:07:02,989 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 01:07:02,989 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 01:07:02,989 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 01:07:02,989 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 01:07:02,989 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 01:07:02,989 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 01:07:02,990 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 01:07:02,990 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 01:07:02,990 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 01:07:02,990 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_8d757377-b3cf-49cd-ab10-9d905e399344/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 -> 90d9d5110e72847827a8a4de1ec9da2f4a9a1545 [2018-10-27 01:07:03,015 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 01:07:03,024 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 01:07:03,026 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 01:07:03,028 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 01:07:03,028 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 01:07:03,029 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8d757377-b3cf-49cd-ab10-9d905e399344/bin-2019/utaipan/../../sv-benchmarks/c/floats-cdfpl/square_5_true-unreach-call_true-termination.i [2018-10-27 01:07:03,083 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8d757377-b3cf-49cd-ab10-9d905e399344/bin-2019/utaipan/data/e00721b96/5dedaf21ad714337a531211b7eadc714/FLAG065e388a5 [2018-10-27 01:07:03,437 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 01:07:03,438 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8d757377-b3cf-49cd-ab10-9d905e399344/sv-benchmarks/c/floats-cdfpl/square_5_true-unreach-call_true-termination.i [2018-10-27 01:07:03,443 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8d757377-b3cf-49cd-ab10-9d905e399344/bin-2019/utaipan/data/e00721b96/5dedaf21ad714337a531211b7eadc714/FLAG065e388a5 [2018-10-27 01:07:03,454 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8d757377-b3cf-49cd-ab10-9d905e399344/bin-2019/utaipan/data/e00721b96/5dedaf21ad714337a531211b7eadc714 [2018-10-27 01:07:03,456 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 01:07:03,457 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 01:07:03,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 01:07:03,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 01:07:03,462 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 01:07:03,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:07:03" (1/1) ... [2018-10-27 01:07:03,465 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@501b0c05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:07:03, skipping insertion in model container [2018-10-27 01:07:03,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:07:03" (1/1) ... [2018-10-27 01:07:03,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 01:07:03,488 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 01:07:03,599 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 01:07:03,602 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 01:07:03,612 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 01:07:03,624 INFO L193 MainTranslator]: Completed translation [2018-10-27 01:07:03,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:07:03 WrapperNode [2018-10-27 01:07:03,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 01:07:03,625 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 01:07:03,625 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 01:07:03,625 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 01:07:03,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:07:03" (1/1) ... [2018-10-27 01:07:03,639 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:07:03" (1/1) ... [2018-10-27 01:07:03,644 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 01:07:03,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 01:07:03,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 01:07:03,645 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 01:07:03,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:07:03" (1/1) ... [2018-10-27 01:07:03,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:07:03" (1/1) ... [2018-10-27 01:07:03,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:07:03" (1/1) ... [2018-10-27 01:07:03,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:07:03" (1/1) ... [2018-10-27 01:07:03,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:07:03" (1/1) ... [2018-10-27 01:07:03,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:07:03" (1/1) ... [2018-10-27 01:07:03,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:07:03" (1/1) ... [2018-10-27 01:07:03,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 01:07:03,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 01:07:03,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 01:07:03,661 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 01:07:03,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:07:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8d757377-b3cf-49cd-ab10-9d905e399344/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 [2018-10-27 01:07:03,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 01:07:03,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 01:07:03,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 01:07:03,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 01:07:03,810 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 01:07:03,810 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 01:07:04,072 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 01:07:04,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:07:04 BoogieIcfgContainer [2018-10-27 01:07:04,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 01:07:04,074 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 01:07:04,074 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 01:07:04,087 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 01:07:04,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:07:03" (1/3) ... [2018-10-27 01:07:04,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20394b31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:07:04, skipping insertion in model container [2018-10-27 01:07:04,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:07:03" (2/3) ... [2018-10-27 01:07:04,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20394b31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:07:04, skipping insertion in model container [2018-10-27 01:07:04,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:07:04" (3/3) ... [2018-10-27 01:07:04,090 INFO L112 eAbstractionObserver]: Analyzing ICFG square_5_true-unreach-call_true-termination.i [2018-10-27 01:07:04,102 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 01:07:04,108 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 01:07:04,119 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 01:07:04,146 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 01:07:04,146 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 01:07:04,146 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 01:07:04,146 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 01:07:04,146 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 01:07:04,147 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 01:07:04,147 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 01:07:04,147 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 01:07:04,162 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-10-27 01:07:04,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-27 01:07:04,166 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 01:07:04,167 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-27 01:07:04,169 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 01:07:04,174 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 01:07:04,174 INFO L82 PathProgramCache]: Analyzing trace with hash -2109216782, now seen corresponding path program 1 times [2018-10-27 01:07:04,177 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 01:07:04,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 01:07:04,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 01:07:04,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 01:07:04,214 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 01:07:04,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 01:07:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 01:07:04,257 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-27 01:07:04,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:07:04 BoogieIcfgContainer [2018-10-27 01:07:04,278 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 01:07:04,278 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 01:07:04,278 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 01:07:04,278 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 01:07:04,279 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:07:04" (3/4) ... [2018-10-27 01:07:04,282 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-27 01:07:04,282 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 01:07:04,283 INFO L168 Benchmark]: Toolchain (without parser) took 826.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 954.4 MB in the beginning and 1.1 GB in the end (delta: -167.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 01:07:04,284 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 01:07:04,285 INFO L168 Benchmark]: CACSL2BoogieTranslator took 166.91 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 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. [2018-10-27 01:07:04,286 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.96 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. [2018-10-27 01:07:04,286 INFO L168 Benchmark]: Boogie Preprocessor took 16.08 ms. Allocated memory is still 1.0 GB. Free memory was 943.7 MB in the beginning and 941.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 01:07:04,286 INFO L168 Benchmark]: RCFGBuilder took 412.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -195.2 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. [2018-10-27 01:07:04,287 INFO L168 Benchmark]: TraceAbstraction took 203.99 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: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-10-27 01:07:04,288 INFO L168 Benchmark]: Witness Printer took 4.31 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. [2018-10-27 01:07:04,290 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 166.91 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 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 18.96 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 16.08 ms. Allocated memory is still 1.0 GB. Free memory was 943.7 MB in the beginning and 941.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 412.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -195.2 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 203.99 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: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Witness Printer took 4.31 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 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 < 1.3985f) 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 [2018-10-27 01:07:06,175 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 01:07:06,177 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 01:07:06,188 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 01:07:06,189 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 01:07:06,190 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 01:07:06,192 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 01:07:06,194 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 01:07:06,195 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 01:07:06,196 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 01:07:06,197 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 01:07:06,197 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 01:07:06,198 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 01:07:06,198 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 01:07:06,199 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 01:07:06,200 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 01:07:06,201 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 01:07:06,202 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 01:07:06,203 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 01:07:06,205 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 01:07:06,206 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 01:07:06,207 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 01:07:06,209 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 01:07:06,209 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 01:07:06,209 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 01:07:06,210 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 01:07:06,211 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 01:07:06,212 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 01:07:06,213 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 01:07:06,213 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 01:07:06,214 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 01:07:06,214 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 01:07:06,214 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 01:07:06,215 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 01:07:06,215 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 01:07:06,217 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 01:07:06,217 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8d757377-b3cf-49cd-ab10-9d905e399344/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-10-27 01:07:06,234 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 01:07:06,240 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 01:07:06,241 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 01:07:06,241 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 01:07:06,242 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 01:07:06,242 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 01:07:06,242 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 01:07:06,242 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 01:07:06,243 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 01:07:06,243 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-27 01:07:06,243 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-27 01:07:06,243 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 01:07:06,243 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 01:07:06,243 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 01:07:06,243 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 01:07:06,245 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-27 01:07:06,245 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-27 01:07:06,246 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-27 01:07:06,246 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 01:07:06,246 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 01:07:06,246 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 01:07:06,246 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 01:07:06,246 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 01:07:06,246 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 01:07:06,247 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 01:07:06,247 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 01:07:06,247 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 01:07:06,247 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 01:07:06,247 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-10-27 01:07:06,247 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 01:07:06,247 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-27 01:07:06,248 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-27 01:07:06,248 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_8d757377-b3cf-49cd-ab10-9d905e399344/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 -> 90d9d5110e72847827a8a4de1ec9da2f4a9a1545 [2018-10-27 01:07:06,300 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 01:07:06,312 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 01:07:06,316 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 01:07:06,318 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 01:07:06,318 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 01:07:06,318 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8d757377-b3cf-49cd-ab10-9d905e399344/bin-2019/utaipan/../../sv-benchmarks/c/floats-cdfpl/square_5_true-unreach-call_true-termination.i [2018-10-27 01:07:06,366 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8d757377-b3cf-49cd-ab10-9d905e399344/bin-2019/utaipan/data/5684ca962/859ceeea41d243068f49d39de91ed798/FLAGcefb08c8a [2018-10-27 01:07:06,749 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 01:07:06,749 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8d757377-b3cf-49cd-ab10-9d905e399344/sv-benchmarks/c/floats-cdfpl/square_5_true-unreach-call_true-termination.i [2018-10-27 01:07:06,755 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8d757377-b3cf-49cd-ab10-9d905e399344/bin-2019/utaipan/data/5684ca962/859ceeea41d243068f49d39de91ed798/FLAGcefb08c8a [2018-10-27 01:07:06,767 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8d757377-b3cf-49cd-ab10-9d905e399344/bin-2019/utaipan/data/5684ca962/859ceeea41d243068f49d39de91ed798 [2018-10-27 01:07:06,770 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 01:07:06,772 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 01:07:06,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 01:07:06,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 01:07:06,775 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 01:07:06,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:07:06" (1/1) ... [2018-10-27 01:07:06,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74d80f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:07:06, skipping insertion in model container [2018-10-27 01:07:06,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:07:06" (1/1) ... [2018-10-27 01:07:06,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 01:07:06,811 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 01:07:06,953 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 01:07:06,958 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 01:07:06,973 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 01:07:06,985 INFO L193 MainTranslator]: Completed translation [2018-10-27 01:07:06,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:07:06 WrapperNode [2018-10-27 01:07:06,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 01:07:06,987 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 01:07:06,987 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 01:07:06,987 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 01:07:06,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:07:06" (1/1) ... [2018-10-27 01:07:07,002 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:07:06" (1/1) ... [2018-10-27 01:07:07,007 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 01:07:07,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 01:07:07,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 01:07:07,008 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 01:07:07,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:07:06" (1/1) ... [2018-10-27 01:07:07,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:07:06" (1/1) ... [2018-10-27 01:07:07,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:07:06" (1/1) ... [2018-10-27 01:07:07,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:07:06" (1/1) ... [2018-10-27 01:07:07,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:07:06" (1/1) ... [2018-10-27 01:07:07,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:07:06" (1/1) ... [2018-10-27 01:07:07,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:07:06" (1/1) ... [2018-10-27 01:07:07,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 01:07:07,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 01:07:07,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 01:07:07,027 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 01:07:07,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:07:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8d757377-b3cf-49cd-ab10-9d905e399344/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 [2018-10-27 01:07:07,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 01:07:07,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 01:07:07,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 01:07:07,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 01:07:07,087 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 01:07:07,087 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 01:07:09,381 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 01:07:09,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:07:09 BoogieIcfgContainer [2018-10-27 01:07:09,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 01:07:09,382 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 01:07:09,382 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 01:07:09,385 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 01:07:09,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:07:06" (1/3) ... [2018-10-27 01:07:09,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24543da0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:07:09, skipping insertion in model container [2018-10-27 01:07:09,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:07:06" (2/3) ... [2018-10-27 01:07:09,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24543da0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:07:09, skipping insertion in model container [2018-10-27 01:07:09,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:07:09" (3/3) ... [2018-10-27 01:07:09,388 INFO L112 eAbstractionObserver]: Analyzing ICFG square_5_true-unreach-call_true-termination.i [2018-10-27 01:07:09,395 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 01:07:09,401 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 01:07:09,410 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 01:07:09,432 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 01:07:09,433 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 01:07:09,433 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 01:07:09,433 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 01:07:09,433 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 01:07:09,433 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 01:07:09,434 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 01:07:09,434 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 01:07:09,434 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 01:07:09,447 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-10-27 01:07:09,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-27 01:07:09,451 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 01:07:09,452 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-27 01:07:09,454 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 01:07:09,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 01:07:09,458 INFO L82 PathProgramCache]: Analyzing trace with hash -2109216782, now seen corresponding path program 1 times [2018-10-27 01:07:09,461 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-27 01:07:09,461 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8d757377-b3cf-49cd-ab10-9d905e399344/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 [2018-10-27 01:07:09,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 01:19:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 01:19:47,638 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 01:19:49,754 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) RNE 1.0))) (and (= c_main_~result~0 (fp.sub RNE (fp.add RNE (fp.sub RNE (fp.add RNE .cse0 (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 2.0)) main_~IN~0)) (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 8.0)) main_~IN~0) main_~IN~0)) (fp.mul RNE (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 16.0)) main_~IN~0) main_~IN~0) main_~IN~0)) (fp.mul RNE (fp.mul RNE (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 5.0 128.0)) main_~IN~0) main_~IN~0) main_~IN~0) main_~IN~0))) (fp.lt main_~IN~0 .cse0) (fp.geq main_~IN~0 (_ +zero 8 24))))) is different from false [2018-10-27 01:19:51,833 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) RNE 1.0))) (and (= c_main_~result~0 (fp.sub RNE (fp.add RNE (fp.sub RNE (fp.add RNE .cse0 (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 2.0)) main_~IN~0)) (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 8.0)) main_~IN~0) main_~IN~0)) (fp.mul RNE (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 16.0)) main_~IN~0) main_~IN~0) main_~IN~0)) (fp.mul RNE (fp.mul RNE (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 5.0 128.0)) main_~IN~0) main_~IN~0) main_~IN~0) main_~IN~0))) (fp.lt main_~IN~0 .cse0) (fp.geq main_~IN~0 (_ +zero 8 24))))) is different from true [2018-10-27 01:20:04,259 WARN L832 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_1 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) RNE 1.0))) (and (fp.geq v_prenex_1 (_ +zero 8 24)) (fp.lt v_prenex_1 .cse0) (not (fp.lt (fp.sub RNE (fp.add RNE (fp.sub RNE (fp.add RNE .cse0 (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 2.0)) v_prenex_1)) (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 8.0)) v_prenex_1) v_prenex_1)) (fp.mul RNE (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 16.0)) v_prenex_1) v_prenex_1) v_prenex_1)) (fp.mul RNE (fp.mul RNE (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 5.0 128.0)) v_prenex_1) v_prenex_1) v_prenex_1) v_prenex_1)) ((_ to_fp 8 24) RNE (/ 2797.0 2000.0))))))) (exists ((main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) RNE 1.0))) (and (not (fp.geq (fp.sub RNE (fp.add RNE (fp.sub RNE (fp.add RNE .cse1 (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 2.0)) main_~IN~0)) (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 8.0)) main_~IN~0) main_~IN~0)) (fp.mul RNE (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 16.0)) main_~IN~0) main_~IN~0) main_~IN~0)) (fp.mul RNE (fp.mul RNE (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 5.0 128.0)) main_~IN~0) main_~IN~0) main_~IN~0) main_~IN~0)) (_ +zero 8 24))) (fp.lt main_~IN~0 .cse1) (fp.geq main_~IN~0 (_ +zero 8 24)))))) is different from false [2018-10-27 01:20:06,335 WARN L854 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_1 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) RNE 1.0))) (and (fp.geq v_prenex_1 (_ +zero 8 24)) (fp.lt v_prenex_1 .cse0) (not (fp.lt (fp.sub RNE (fp.add RNE (fp.sub RNE (fp.add RNE .cse0 (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 2.0)) v_prenex_1)) (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 8.0)) v_prenex_1) v_prenex_1)) (fp.mul RNE (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 16.0)) v_prenex_1) v_prenex_1) v_prenex_1)) (fp.mul RNE (fp.mul RNE (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 5.0 128.0)) v_prenex_1) v_prenex_1) v_prenex_1) v_prenex_1)) ((_ to_fp 8 24) RNE (/ 2797.0 2000.0))))))) (exists ((main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) RNE 1.0))) (and (not (fp.geq (fp.sub RNE (fp.add RNE (fp.sub RNE (fp.add RNE .cse1 (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 2.0)) main_~IN~0)) (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 8.0)) main_~IN~0) main_~IN~0)) (fp.mul RNE (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 16.0)) main_~IN~0) main_~IN~0) main_~IN~0)) (fp.mul RNE (fp.mul RNE (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 5.0 128.0)) main_~IN~0) main_~IN~0) main_~IN~0) main_~IN~0)) (_ +zero 8 24))) (fp.lt main_~IN~0 .cse1) (fp.geq main_~IN~0 (_ +zero 8 24)))))) is different from true [2018-10-27 01:20:06,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 01:20:06,339 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-27 01:20:06,367 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 01:20:06,368 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 01:20:06,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 01:20:06,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 01:20:06,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=1, Unknown=4, NotChecked=2, Total=12 [2018-10-27 01:20:06,382 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 4 states. [2018-10-27 01:20:06,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 01:20:06,397 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2018-10-27 01:20:06,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 01:20:06,398 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2018-10-27 01:20:06,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 01:20:06,403 INFO L225 Difference]: With dead ends: 18 [2018-10-27 01:20:06,404 INFO L226 Difference]: Without dead ends: 0 [2018-10-27 01:20:06,406 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=5, Invalid=1, Unknown=4, NotChecked=2, Total=12 [2018-10-27 01:20:06,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-27 01:20:06,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-27 01:20:06,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-27 01:20:06,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-27 01:20:06,423 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2018-10-27 01:20:06,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 01:20:06,423 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 01:20:06,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 01:20:06,423 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-27 01:20:06,423 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-27 01:20:06,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-27 01:20:06,465 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-27 01:20:06,466 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-27 01:20:06,466 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-27 01:20:06,466 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-27 01:20:06,466 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-27 01:20:06,466 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-27 01:20:06,466 INFO L425 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-10-27 01:20:06,468 INFO L425 ceAbstractionStarter]: For program point L14(lines 14 15) no Hoare annotation was computed. [2018-10-27 01:20:06,472 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 4 18) the Hoare annotation is: true [2018-10-27 01:20:06,472 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 4 18) no Hoare annotation was computed. [2018-10-27 01:20:06,472 INFO L425 ceAbstractionStarter]: For program point L14-2(lines 14 15) no Hoare annotation was computed. [2018-10-27 01:20:06,472 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2018-10-27 01:20:06,472 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 4 18) no Hoare annotation was computed. [2018-10-27 01:20:06,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:20:06 BoogieIcfgContainer [2018-10-27 01:20:06,475 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 01:20:06,475 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 01:20:06,475 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 01:20:06,475 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 01:20:06,477 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:07:09" (3/4) ... [2018-10-27 01:20:06,480 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-27 01:20:06,486 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-27 01:20:06,486 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-27 01:20:06,492 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-10-27 01:20:06,498 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-10-27 01:20:06,499 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-27 01:20:06,539 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_8d757377-b3cf-49cd-ab10-9d905e399344/bin-2019/utaipan/witness.graphml [2018-10-27 01:20:06,540 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 01:20:06,541 INFO L168 Benchmark]: Toolchain (without parser) took 779770.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 189.3 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -180.7 MB). Peak memory consumption was 8.5 MB. Max. memory is 11.5 GB. [2018-10-27 01:20:06,543 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. [2018-10-27 01:20:06,544 INFO L168 Benchmark]: CACSL2BoogieTranslator took 214.06 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 941.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-10-27 01:20:06,545 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.54 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 01:20:06,547 INFO L168 Benchmark]: Boogie Preprocessor took 19.29 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-27 01:20:06,548 INFO L168 Benchmark]: RCFGBuilder took 2354.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 189.3 MB). Free memory was 935.8 MB in the beginning and 1.2 GB in the end (delta: -235.8 MB). Peak memory consumption was 21.6 MB. Max. memory is 11.5 GB. [2018-10-27 01:20:06,549 INFO L168 Benchmark]: TraceAbstraction took 777092.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 37.6 MB). Peak memory consumption was 37.6 MB. Max. memory is 11.5 GB. [2018-10-27 01:20:06,550 INFO L168 Benchmark]: Witness Printer took 65.47 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. [2018-10-27 01:20:06,553 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 214.06 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 941.1 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 20.54 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.29 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2354.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 189.3 MB). Free memory was 935.8 MB in the beginning and 1.2 GB in the end (delta: -235.8 MB). Peak memory consumption was 21.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 777092.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 37.6 MB). Peak memory consumption was 37.6 MB. Max. memory is 11.5 GB. * Witness Printer took 65.47 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: - PositiveResult [Line: 15]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. SAFE Result, 777.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3s Time, 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 4 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 757.9s SatisfiabilityAnalysisTime, 18.8s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 2 QuantifiedInterpolants, 1224 SizeOfPredicates, 3 NumberOfNonLiveVariables, 16 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...