./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float2_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_f2be6a42-73b0-4ac4-b737-097eb58ae466/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f2be6a42-73b0-4ac4-b737-097eb58ae466/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f2be6a42-73b0-4ac4-b737-097eb58ae466/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f2be6a42-73b0-4ac4-b737-097eb58ae466/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float2_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_f2be6a42-73b0-4ac4-b737-097eb58ae466/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f2be6a42-73b0-4ac4-b737-097eb58ae466/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 0572227f16868054f9308a9d75f98d2abad6a63b ........................................................................................................................................................................................................................................ 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_f2be6a42-73b0-4ac4-b737-097eb58ae466/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f2be6a42-73b0-4ac4-b737-097eb58ae466/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f2be6a42-73b0-4ac4-b737-097eb58ae466/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f2be6a42-73b0-4ac4-b737-097eb58ae466/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float2_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_f2be6a42-73b0-4ac4-b737-097eb58ae466/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f2be6a42-73b0-4ac4-b737-097eb58ae466/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 0572227f16868054f9308a9d75f98d2abad6a63b .................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 20:36:46,045 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 20:36:46,047 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 20:36:46,059 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 20:36:46,059 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 20:36:46,060 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 20:36:46,061 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 20:36:46,062 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 20:36:46,064 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 20:36:46,064 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 20:36:46,065 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 20:36:46,065 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 20:36:46,066 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 20:36:46,066 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 20:36:46,067 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 20:36:46,069 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 20:36:46,069 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 20:36:46,071 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 20:36:46,072 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 20:36:46,073 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 20:36:46,074 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 20:36:46,075 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 20:36:46,077 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 20:36:46,078 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 20:36:46,078 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 20:36:46,079 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 20:36:46,080 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 20:36:46,081 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 20:36:46,081 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 20:36:46,082 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 20:36:46,082 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 20:36:46,083 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 20:36:46,083 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 20:36:46,083 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 20:36:46,085 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 20:36:46,085 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 20:36:46,086 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f2be6a42-73b0-4ac4-b737-097eb58ae466/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-26 20:36:46,096 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 20:36:46,097 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 20:36:46,097 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 20:36:46,098 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 20:36:46,098 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 20:36:46,098 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 20:36:46,098 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 20:36:46,098 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 20:36:46,098 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 20:36:46,098 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 20:36:46,098 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 20:36:46,099 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 20:36:46,099 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 20:36:46,101 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 20:36:46,101 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 20:36:46,101 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 20:36:46,101 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 20:36:46,101 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 20:36:46,101 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 20:36:46,101 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 20:36:46,101 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 20:36:46,102 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 20:36:46,102 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 20:36:46,102 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 20:36:46,102 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 20:36:46,102 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 20:36:46,102 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 20:36:46,102 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 20:36:46,103 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 20:36:46,103 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 20:36:46,103 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 20:36:46,103 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 20:36:46,103 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 20:36:46,103 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 20:36:46,103 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_f2be6a42-73b0-4ac4-b737-097eb58ae466/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 -> 0572227f16868054f9308a9d75f98d2abad6a63b [2018-10-26 20:36:46,132 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 20:36:46,143 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 20:36:46,146 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 20:36:46,148 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 20:36:46,148 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 20:36:46,149 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f2be6a42-73b0-4ac4-b737-097eb58ae466/bin-2019/utaipan/../../sv-benchmarks/c/floats-cbmc-regression/float2_true-unreach-call_true-termination.i [2018-10-26 20:36:46,202 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f2be6a42-73b0-4ac4-b737-097eb58ae466/bin-2019/utaipan/data/b7e67c67a/3b5431d0c5f249a6830e5be69d837672/FLAGae1d3136c [2018-10-26 20:36:46,574 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 20:36:46,575 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f2be6a42-73b0-4ac4-b737-097eb58ae466/sv-benchmarks/c/floats-cbmc-regression/float2_true-unreach-call_true-termination.i [2018-10-26 20:36:46,582 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f2be6a42-73b0-4ac4-b737-097eb58ae466/bin-2019/utaipan/data/b7e67c67a/3b5431d0c5f249a6830e5be69d837672/FLAGae1d3136c [2018-10-26 20:36:46,600 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f2be6a42-73b0-4ac4-b737-097eb58ae466/bin-2019/utaipan/data/b7e67c67a/3b5431d0c5f249a6830e5be69d837672 [2018-10-26 20:36:46,603 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 20:36:46,604 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 20:36:46,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 20:36:46,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 20:36:46,611 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 20:36:46,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:36:46" (1/1) ... [2018-10-26 20:36:46,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e69ca1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:46, skipping insertion in model container [2018-10-26 20:36:46,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:36:46" (1/1) ... [2018-10-26 20:36:46,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 20:36:46,648 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 20:36:46,800 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:36:46,803 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 20:36:46,815 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:36:46,826 INFO L193 MainTranslator]: Completed translation [2018-10-26 20:36:46,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:46 WrapperNode [2018-10-26 20:36:46,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 20:36:46,832 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 20:36:46,832 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 20:36:46,832 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 20:36:46,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:46" (1/1) ... [2018-10-26 20:36:46,848 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:46" (1/1) ... [2018-10-26 20:36:46,853 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 20:36:46,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 20:36:46,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 20:36:46,853 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 20:36:46,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:46" (1/1) ... [2018-10-26 20:36:46,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:46" (1/1) ... [2018-10-26 20:36:46,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:46" (1/1) ... [2018-10-26 20:36:46,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:46" (1/1) ... [2018-10-26 20:36:46,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:46" (1/1) ... [2018-10-26 20:36:46,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:46" (1/1) ... [2018-10-26 20:36:46,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:46" (1/1) ... [2018-10-26 20:36:46,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 20:36:46,873 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 20:36:46,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 20:36:46,873 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 20:36:46,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2be6a42-73b0-4ac4-b737-097eb58ae466/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 20:36:46,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 20:36:46,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 20:36:46,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 20:36:46,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 20:36:46,971 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 20:36:46,971 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 20:36:47,179 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 20:36:47,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:36:47 BoogieIcfgContainer [2018-10-26 20:36:47,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 20:36:47,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 20:36:47,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 20:36:47,190 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 20:36:47,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:36:46" (1/3) ... [2018-10-26 20:36:47,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b9636b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:36:47, skipping insertion in model container [2018-10-26 20:36:47,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:46" (2/3) ... [2018-10-26 20:36:47,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b9636b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:36:47, skipping insertion in model container [2018-10-26 20:36:47,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:36:47" (3/3) ... [2018-10-26 20:36:47,194 INFO L112 eAbstractionObserver]: Analyzing ICFG float2_true-unreach-call_true-termination.i [2018-10-26 20:36:47,206 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 20:36:47,214 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-10-26 20:36:47,234 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-10-26 20:36:47,266 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 20:36:47,266 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 20:36:47,266 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 20:36:47,266 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 20:36:47,266 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 20:36:47,267 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 20:36:47,267 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 20:36:47,267 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 20:36:47,285 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-10-26 20:36:47,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-26 20:36:47,291 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:36:47,292 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:36:47,294 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:36:47,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:36:47,300 INFO L82 PathProgramCache]: Analyzing trace with hash -484171444, now seen corresponding path program 1 times [2018-10-26 20:36:47,303 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 20:36:47,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:36:47,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:36:47,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:36:47,353 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 20:36:47,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 20:36:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 20:36:47,404 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 20:36:47,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 08:36:47 BoogieIcfgContainer [2018-10-26 20:36:47,431 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 20:36:47,431 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 20:36:47,431 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 20:36:47,432 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 20:36:47,432 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:36:47" (3/4) ... [2018-10-26 20:36:47,436 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-26 20:36:47,436 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 20:36:47,437 INFO L168 Benchmark]: Toolchain (without parser) took 833.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 959.8 MB in the beginning and 1.1 GB in the end (delta: -132.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:36:47,439 INFO L168 Benchmark]: CDTParser took 0.18 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 20:36:47,440 INFO L168 Benchmark]: CACSL2BoogieTranslator took 226.46 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 946.4 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-10-26 20:36:47,441 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.04 ms. Allocated memory is still 1.0 GB. Free memory was 946.4 MB in the beginning and 943.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:36:47,442 INFO L168 Benchmark]: Boogie Preprocessor took 19.10 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 20:36:47,442 INFO L168 Benchmark]: RCFGBuilder took 307.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 943.7 MB in the beginning and 1.1 GB in the end (delta: -165.8 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. [2018-10-26 20:36:47,443 INFO L168 Benchmark]: TraceAbstraction took 250.12 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: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. [2018-10-26 20:36:47,444 INFO L168 Benchmark]: Witness Printer took 5.31 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. [2018-10-26 20:36:47,449 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 226.46 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 946.4 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.04 ms. Allocated memory is still 1.0 GB. Free memory was 946.4 MB in the beginning and 943.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.10 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 307.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 943.7 MB in the beginning and 1.1 GB in the end (delta: -165.8 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 250.12 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: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. * Witness Printer took 5.31 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: 10]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 10. Possible FailurePath: [L5] float a; [L6] double b; [L9] a=1.25L VAL [a=5/4] [L10] COND TRUE !(a==1.25) VAL [a=5/4] [L10] __VERIFIER_error() VAL [a=5/4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 4 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=24occurred 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 20:36:49,504 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 20:36:49,505 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 20:36:49,521 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 20:36:49,521 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 20:36:49,522 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 20:36:49,523 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 20:36:49,525 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 20:36:49,526 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 20:36:49,527 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 20:36:49,535 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 20:36:49,536 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 20:36:49,536 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 20:36:49,537 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 20:36:49,538 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 20:36:49,539 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 20:36:49,540 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 20:36:49,541 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 20:36:49,543 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 20:36:49,545 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 20:36:49,546 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 20:36:49,546 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 20:36:49,549 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 20:36:49,549 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 20:36:49,549 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 20:36:49,550 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 20:36:49,551 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 20:36:49,551 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 20:36:49,552 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 20:36:49,553 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 20:36:49,553 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 20:36:49,554 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 20:36:49,554 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 20:36:49,554 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 20:36:49,555 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 20:36:49,557 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 20:36:49,557 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f2be6a42-73b0-4ac4-b737-097eb58ae466/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-10-26 20:36:49,569 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 20:36:49,570 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 20:36:49,570 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 20:36:49,571 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 20:36:49,571 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 20:36:49,571 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 20:36:49,571 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 20:36:49,571 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 20:36:49,573 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 20:36:49,573 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 20:36:49,573 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 20:36:49,573 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 20:36:49,573 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 20:36:49,574 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 20:36:49,574 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 20:36:49,574 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-26 20:36:49,574 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-26 20:36:49,574 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 20:36:49,574 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 20:36:49,575 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 20:36:49,575 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 20:36:49,575 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 20:36:49,575 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 20:36:49,575 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 20:36:49,577 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 20:36:49,577 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 20:36:49,578 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 20:36:49,578 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 20:36:49,578 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-10-26 20:36:49,578 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 20:36:49,578 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-26 20:36:49,578 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-26 20:36:49,579 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_f2be6a42-73b0-4ac4-b737-097eb58ae466/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 -> 0572227f16868054f9308a9d75f98d2abad6a63b [2018-10-26 20:36:49,617 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 20:36:49,630 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 20:36:49,633 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 20:36:49,634 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 20:36:49,635 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 20:36:49,636 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f2be6a42-73b0-4ac4-b737-097eb58ae466/bin-2019/utaipan/../../sv-benchmarks/c/floats-cbmc-regression/float2_true-unreach-call_true-termination.i [2018-10-26 20:36:49,687 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f2be6a42-73b0-4ac4-b737-097eb58ae466/bin-2019/utaipan/data/f00a0c9aa/1bad0ec64f8b4135a2178976f9b06752/FLAG6d8426a42 [2018-10-26 20:36:50,073 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 20:36:50,073 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f2be6a42-73b0-4ac4-b737-097eb58ae466/sv-benchmarks/c/floats-cbmc-regression/float2_true-unreach-call_true-termination.i [2018-10-26 20:36:50,079 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f2be6a42-73b0-4ac4-b737-097eb58ae466/bin-2019/utaipan/data/f00a0c9aa/1bad0ec64f8b4135a2178976f9b06752/FLAG6d8426a42 [2018-10-26 20:36:50,091 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f2be6a42-73b0-4ac4-b737-097eb58ae466/bin-2019/utaipan/data/f00a0c9aa/1bad0ec64f8b4135a2178976f9b06752 [2018-10-26 20:36:50,094 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 20:36:50,095 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 20:36:50,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 20:36:50,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 20:36:50,101 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 20:36:50,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:36:50" (1/1) ... [2018-10-26 20:36:50,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@109fc09d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:50, skipping insertion in model container [2018-10-26 20:36:50,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:36:50" (1/1) ... [2018-10-26 20:36:50,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 20:36:50,132 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 20:36:50,282 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:36:50,289 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 20:36:50,304 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:36:50,318 INFO L193 MainTranslator]: Completed translation [2018-10-26 20:36:50,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:50 WrapperNode [2018-10-26 20:36:50,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 20:36:50,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 20:36:50,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 20:36:50,320 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 20:36:50,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:50" (1/1) ... [2018-10-26 20:36:50,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:50" (1/1) ... [2018-10-26 20:36:50,343 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 20:36:50,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 20:36:50,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 20:36:50,344 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 20:36:50,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:50" (1/1) ... [2018-10-26 20:36:50,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:50" (1/1) ... [2018-10-26 20:36:50,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:50" (1/1) ... [2018-10-26 20:36:50,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:50" (1/1) ... [2018-10-26 20:36:50,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:50" (1/1) ... [2018-10-26 20:36:50,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:50" (1/1) ... [2018-10-26 20:36:50,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:50" (1/1) ... [2018-10-26 20:36:50,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 20:36:50,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 20:36:50,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 20:36:50,366 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 20:36:50,367 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2be6a42-73b0-4ac4-b737-097eb58ae466/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 20:36:50,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 20:36:50,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 20:36:50,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 20:36:50,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 20:36:50,411 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 20:36:50,412 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 20:36:50,864 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 20:36:50,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:36:50 BoogieIcfgContainer [2018-10-26 20:36:50,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 20:36:50,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 20:36:50,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 20:36:50,869 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 20:36:50,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:36:50" (1/3) ... [2018-10-26 20:36:50,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40dcf97f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:36:50, skipping insertion in model container [2018-10-26 20:36:50,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:50" (2/3) ... [2018-10-26 20:36:50,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40dcf97f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:36:50, skipping insertion in model container [2018-10-26 20:36:50,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:36:50" (3/3) ... [2018-10-26 20:36:50,874 INFO L112 eAbstractionObserver]: Analyzing ICFG float2_true-unreach-call_true-termination.i [2018-10-26 20:36:50,885 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 20:36:50,893 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-10-26 20:36:50,905 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-10-26 20:36:50,935 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 20:36:50,936 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 20:36:50,936 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 20:36:50,937 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 20:36:50,937 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 20:36:50,937 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 20:36:50,937 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 20:36:50,937 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 20:36:50,937 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 20:36:50,955 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-10-26 20:36:50,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-26 20:36:50,961 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:36:50,962 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:36:50,965 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:36:50,971 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:36:50,971 INFO L82 PathProgramCache]: Analyzing trace with hash -484171444, now seen corresponding path program 1 times [2018-10-26 20:36:50,976 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:36:50,977 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2be6a42-73b0-4ac4-b737-097eb58ae466/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 20:36:50,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:36:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:36:51,024 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:36:51,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:36:51,126 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:36:51,141 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:36:51,141 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 20:36:51,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 20:36:51,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 20:36:51,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 20:36:51,163 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2018-10-26 20:36:51,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:36:51,288 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2018-10-26 20:36:51,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 20:36:51,290 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-10-26 20:36:51,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:36:51,299 INFO L225 Difference]: With dead ends: 40 [2018-10-26 20:36:51,299 INFO L226 Difference]: Without dead ends: 18 [2018-10-26 20:36:51,302 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 20:36:51,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-26 20:36:51,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-26 20:36:51,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-26 20:36:51,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2018-10-26 20:36:51,339 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 7 [2018-10-26 20:36:51,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:36:51,339 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2018-10-26 20:36:51,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 20:36:51,340 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2018-10-26 20:36:51,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-26 20:36:51,341 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:36:51,341 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:36:51,341 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:36:51,342 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:36:51,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1432165234, now seen corresponding path program 1 times [2018-10-26 20:36:51,342 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:36:51,342 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2be6a42-73b0-4ac4-b737-097eb58ae466/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-10-26 20:36:51,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:36:51,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:36:51,370 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:36:51,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:36:51,415 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:36:51,422 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:36:51,423 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 20:36:51,424 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 20:36:51,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 20:36:51,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 20:36:51,424 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 3 states. [2018-10-26 20:36:51,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:36:51,456 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2018-10-26 20:36:51,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 20:36:51,457 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-10-26 20:36:51,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:36:51,457 INFO L225 Difference]: With dead ends: 18 [2018-10-26 20:36:51,458 INFO L226 Difference]: Without dead ends: 16 [2018-10-26 20:36:51,458 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 20:36:51,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-26 20:36:51,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-26 20:36:51,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-26 20:36:51,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2018-10-26 20:36:51,461 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 9 [2018-10-26 20:36:51,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:36:51,462 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2018-10-26 20:36:51,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 20:36:51,462 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2018-10-26 20:36:51,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-26 20:36:51,462 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:36:51,462 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:36:51,463 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:36:51,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:36:51,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1921130384, now seen corresponding path program 1 times [2018-10-26 20:36:51,463 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:36:51,463 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2be6a42-73b0-4ac4-b737-097eb58ae466/bin-2019/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-10-26 20:36:51,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:36:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:36:51,482 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:36:51,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:36:51,503 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:36:51,511 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:36:51,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 20:36:51,512 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 20:36:51,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 20:36:51,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 20:36:51,512 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand 3 states. [2018-10-26 20:36:51,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:36:51,673 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2018-10-26 20:36:51,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 20:36:51,674 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-10-26 20:36:51,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:36:51,674 INFO L225 Difference]: With dead ends: 16 [2018-10-26 20:36:51,674 INFO L226 Difference]: Without dead ends: 14 [2018-10-26 20:36:51,675 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 20:36:51,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-26 20:36:51,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-26 20:36:51,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-26 20:36:51,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2018-10-26 20:36:51,679 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 11 [2018-10-26 20:36:51,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:36:51,679 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2018-10-26 20:36:51,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 20:36:51,679 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2018-10-26 20:36:51,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-26 20:36:51,680 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:36:51,680 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:36:51,680 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:36:51,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:36:51,681 INFO L82 PathProgramCache]: Analyzing trace with hash 629763314, now seen corresponding path program 1 times [2018-10-26 20:36:51,681 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:36:51,681 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2be6a42-73b0-4ac4-b737-097eb58ae466/bin-2019/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-10-26 20:36:51,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:36:51,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:36:51,705 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:36:51,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:36:51,720 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:36:51,733 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:36:51,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 20:36:51,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 20:36:51,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 20:36:51,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 20:36:51,734 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand 3 states. [2018-10-26 20:36:51,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:36:51,795 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2018-10-26 20:36:51,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 20:36:51,796 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-10-26 20:36:51,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:36:51,796 INFO L225 Difference]: With dead ends: 14 [2018-10-26 20:36:51,796 INFO L226 Difference]: Without dead ends: 0 [2018-10-26 20:36:51,797 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 20:36:51,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-26 20:36:51,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-26 20:36:51,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-26 20:36:51,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-26 20:36:51,798 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-10-26 20:36:51,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:36:51,798 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-26 20:36:51,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 20:36:51,798 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-26 20:36:51,798 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-26 20:36:51,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-26 20:36:51,837 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-26 20:36:51,837 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-26 20:36:51,837 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-26 20:36:51,837 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-26 20:36:51,837 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-26 20:36:51,838 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-26 20:36:51,838 INFO L425 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2018-10-26 20:36:51,838 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 3 22) no Hoare annotation was computed. [2018-10-26 20:36:51,838 INFO L425 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-10-26 20:36:51,838 INFO L425 ceAbstractionStarter]: For program point L21-1(line 21) no Hoare annotation was computed. [2018-10-26 20:36:51,838 INFO L425 ceAbstractionStarter]: For program point L21-3(lines 3 22) no Hoare annotation was computed. [2018-10-26 20:36:51,838 INFO L425 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-10-26 20:36:51,839 INFO L425 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2018-10-26 20:36:51,839 INFO L425 ceAbstractionStarter]: For program point L17-1(line 17) no Hoare annotation was computed. [2018-10-26 20:36:51,839 INFO L425 ceAbstractionStarter]: For program point L17-3(line 17) no Hoare annotation was computed. [2018-10-26 20:36:51,839 INFO L425 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2018-10-26 20:36:51,841 INFO L425 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2018-10-26 20:36:51,841 INFO L425 ceAbstractionStarter]: For program point L13-3(line 13) no Hoare annotation was computed. [2018-10-26 20:36:51,841 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2018-10-26 20:36:51,841 INFO L425 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2018-10-26 20:36:51,842 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 3 22) the Hoare annotation is: true [2018-10-26 20:36:51,842 INFO L425 ceAbstractionStarter]: For program point L10(line 10) no Hoare annotation was computed. [2018-10-26 20:36:51,842 INFO L425 ceAbstractionStarter]: For program point L10-1(line 10) no Hoare annotation was computed. [2018-10-26 20:36:51,842 INFO L425 ceAbstractionStarter]: For program point L10-3(line 10) no Hoare annotation was computed. [2018-10-26 20:36:51,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 08:36:51 BoogieIcfgContainer [2018-10-26 20:36:51,845 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 20:36:51,846 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 20:36:51,846 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 20:36:51,846 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 20:36:51,848 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:36:50" (3/4) ... [2018-10-26 20:36:51,852 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-26 20:36:51,859 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-26 20:36:51,859 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-26 20:36:51,863 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-10-26 20:36:51,863 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-10-26 20:36:51,863 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-26 20:36:51,904 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_f2be6a42-73b0-4ac4-b737-097eb58ae466/bin-2019/utaipan/witness.graphml [2018-10-26 20:36:51,904 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 20:36:51,905 INFO L168 Benchmark]: Toolchain (without parser) took 1811.00 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.2 MB). Free memory was 953.2 MB in the beginning and 1.0 GB in the end (delta: -83.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. [2018-10-26 20:36:51,907 INFO L168 Benchmark]: CDTParser took 0.22 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 20:36:51,908 INFO L168 Benchmark]: CACSL2BoogieTranslator took 221.81 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. [2018-10-26 20:36:51,909 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.57 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. [2018-10-26 20:36:51,909 INFO L168 Benchmark]: Boogie Preprocessor took 22.10 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. [2018-10-26 20:36:51,909 INFO L168 Benchmark]: RCFGBuilder took 498.67 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.2 MB). Free memory was 935.8 MB in the beginning and 1.1 GB in the end (delta: -160.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. [2018-10-26 20:36:51,910 INFO L168 Benchmark]: TraceAbstraction took 979.91 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 58.9 MB). Peak memory consumption was 58.9 MB. Max. memory is 11.5 GB. [2018-10-26 20:36:51,911 INFO L168 Benchmark]: Witness Printer took 58.90 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:36:51,915 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 221.81 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 23.57 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 22.10 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 498.67 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.2 MB). Free memory was 935.8 MB in the beginning and 1.1 GB in the end (delta: -160.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 979.91 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 58.9 MB). Peak memory consumption was 58.9 MB. Max. memory is 11.5 GB. * Witness Printer took 58.90 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 13]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 10]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 4 error locations. SAFE Result, 0.9s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 57 SDtfs, 14 SDslu, 27 SDs, 0 SdLazy, 18 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 4 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 544 SizeOfPredicates, 4 NumberOfNonLiveVariables, 64 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...