./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/recursive-simple/id_b5_o10_false-no-overflow.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_51dc5504-15e4-49fa-84dc-997f745def03/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_51dc5504-15e4-49fa-84dc-997f745def03/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_51dc5504-15e4-49fa-84dc-997f745def03/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_51dc5504-15e4-49fa-84dc-997f745def03/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_b5_o10_false-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_51dc5504-15e4-49fa-84dc-997f745def03/bin-2019/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_51dc5504-15e4-49fa-84dc-997f745def03/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 08bbe2c494adbfbcc4d1f2aa863ee46abea55656 .............................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 07:42:04,096 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 07:42:04,097 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 07:42:04,103 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 07:42:04,104 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 07:42:04,104 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 07:42:04,105 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 07:42:04,106 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 07:42:04,107 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 07:42:04,108 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 07:42:04,109 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 07:42:04,109 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 07:42:04,109 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 07:42:04,110 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 07:42:04,111 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 07:42:04,111 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 07:42:04,112 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 07:42:04,113 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 07:42:04,115 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 07:42:04,116 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 07:42:04,116 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 07:42:04,117 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 07:42:04,119 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 07:42:04,119 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 07:42:04,119 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 07:42:04,120 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 07:42:04,120 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 07:42:04,121 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 07:42:04,122 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 07:42:04,122 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 07:42:04,123 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 07:42:04,123 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 07:42:04,123 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 07:42:04,123 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 07:42:04,124 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 07:42:04,124 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 07:42:04,125 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_51dc5504-15e4-49fa-84dc-997f745def03/bin-2019/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2018-11-10 07:42:04,132 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 07:42:04,132 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 07:42:04,133 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 07:42:04,133 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 07:42:04,133 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 07:42:04,134 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 07:42:04,134 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 07:42:04,134 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 07:42:04,134 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 07:42:04,134 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 07:42:04,134 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 07:42:04,135 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 07:42:04,135 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 07:42:04,135 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 07:42:04,135 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 07:42:04,136 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 07:42:04,136 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 07:42:04,136 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 07:42:04,136 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 07:42:04,136 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 07:42:04,136 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-10 07:42:04,136 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 07:42:04,137 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 07:42:04,137 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 07:42:04,137 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 07:42:04,137 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 07:42:04,137 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 07:42:04,137 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 07:42:04,138 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 07:42:04,138 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 07:42:04,138 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 07:42:04,138 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 07:42:04,138 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 07:42:04,138 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 07:42:04,138 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 07:42:04,139 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 07:42:04,139 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_51dc5504-15e4-49fa-84dc-997f745def03/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 ! overflow) ) 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 -> 08bbe2c494adbfbcc4d1f2aa863ee46abea55656 [2018-11-10 07:42:04,163 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 07:42:04,171 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 07:42:04,173 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 07:42:04,174 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 07:42:04,175 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 07:42:04,175 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_51dc5504-15e4-49fa-84dc-997f745def03/bin-2019/utaipan/../../sv-benchmarks/c/recursive-simple/id_b5_o10_false-no-overflow.c [2018-11-10 07:42:04,209 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_51dc5504-15e4-49fa-84dc-997f745def03/bin-2019/utaipan/data/447203cc5/b5ed6f48e61442f2bd221c57514bfbe5/FLAG14ed26de8 [2018-11-10 07:42:04,592 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 07:42:04,592 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_51dc5504-15e4-49fa-84dc-997f745def03/sv-benchmarks/c/recursive-simple/id_b5_o10_false-no-overflow.c [2018-11-10 07:42:04,597 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_51dc5504-15e4-49fa-84dc-997f745def03/bin-2019/utaipan/data/447203cc5/b5ed6f48e61442f2bd221c57514bfbe5/FLAG14ed26de8 [2018-11-10 07:42:04,608 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_51dc5504-15e4-49fa-84dc-997f745def03/bin-2019/utaipan/data/447203cc5/b5ed6f48e61442f2bd221c57514bfbe5 [2018-11-10 07:42:04,610 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 07:42:04,610 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 07:42:04,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 07:42:04,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 07:42:04,613 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 07:42:04,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 07:42:04" (1/1) ... [2018-11-10 07:42:04,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14fa8391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:42:04, skipping insertion in model container [2018-11-10 07:42:04,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 07:42:04" (1/1) ... [2018-11-10 07:42:04,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 07:42:04,631 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 07:42:04,718 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 07:42:04,720 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 07:42:04,729 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 07:42:04,737 INFO L193 MainTranslator]: Completed translation [2018-11-10 07:42:04,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:42:04 WrapperNode [2018-11-10 07:42:04,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 07:42:04,738 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 07:42:04,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 07:42:04,738 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 07:42:04,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:42:04" (1/1) ... [2018-11-10 07:42:04,749 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:42:04" (1/1) ... [2018-11-10 07:42:04,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 07:42:04,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 07:42:04,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 07:42:04,754 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 07:42:04,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:42:04" (1/1) ... [2018-11-10 07:42:04,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:42:04" (1/1) ... [2018-11-10 07:42:04,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:42:04" (1/1) ... [2018-11-10 07:42:04,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:42:04" (1/1) ... [2018-11-10 07:42:04,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:42:04" (1/1) ... [2018-11-10 07:42:04,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:42:04" (1/1) ... [2018-11-10 07:42:04,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:42:04" (1/1) ... [2018-11-10 07:42:04,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 07:42:04,768 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 07:42:04,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 07:42:04,768 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 07:42:04,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:42:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_51dc5504-15e4-49fa-84dc-997f745def03/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 [2018-11-10 07:42:04,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 07:42:04,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 07:42:04,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 07:42:04,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 07:42:04,843 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 07:42:04,843 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 07:42:04,843 INFO L130 BoogieDeclarations]: Found specification of procedure id [2018-11-10 07:42:04,843 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2018-11-10 07:42:04,971 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 07:42:04,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:42:04 BoogieIcfgContainer [2018-11-10 07:42:04,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 07:42:04,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 07:42:04,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 07:42:04,975 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 07:42:04,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 07:42:04" (1/3) ... [2018-11-10 07:42:04,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@700eb6b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 07:42:04, skipping insertion in model container [2018-11-10 07:42:04,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:42:04" (2/3) ... [2018-11-10 07:42:04,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@700eb6b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 07:42:04, skipping insertion in model container [2018-11-10 07:42:04,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:42:04" (3/3) ... [2018-11-10 07:42:04,978 INFO L112 eAbstractionObserver]: Analyzing ICFG id_b5_o10_false-no-overflow.c [2018-11-10 07:42:04,986 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 07:42:04,992 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-10 07:42:05,006 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-10 07:42:05,032 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 07:42:05,033 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 07:42:05,033 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 07:42:05,033 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 07:42:05,033 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 07:42:05,033 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 07:42:05,033 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 07:42:05,033 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 07:42:05,048 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-11-10 07:42:05,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-10 07:42:05,053 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 07:42:05,054 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 07:42:05,056 INFO L424 AbstractCegarLoop]: === Iteration 1 === [idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 07:42:05,060 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:42:05,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1269657425, now seen corresponding path program 1 times [2018-11-10 07:42:05,062 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 07:42:05,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:42:05,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:42:05,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:42:05,105 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 07:42:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:42:05,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:42:05,209 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 07:42:05,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 07:42:05,209 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 07:42:05,213 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 07:42:05,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 07:42:05,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 07:42:05,225 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2018-11-10 07:42:05,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 07:42:05,287 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2018-11-10 07:42:05,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 07:42:05,288 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2018-11-10 07:42:05,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 07:42:05,294 INFO L225 Difference]: With dead ends: 32 [2018-11-10 07:42:05,294 INFO L226 Difference]: Without dead ends: 20 [2018-11-10 07:42:05,296 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 07:42:05,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-10 07:42:05,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-11-10 07:42:05,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-10 07:42:05,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-11-10 07:42:05,320 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 9 [2018-11-10 07:42:05,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 07:42:05,321 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-11-10 07:42:05,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 07:42:05,321 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-11-10 07:42:05,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-10 07:42:05,322 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 07:42:05,322 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 07:42:05,322 INFO L424 AbstractCegarLoop]: === Iteration 2 === [idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 07:42:05,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:42:05,322 INFO L82 PathProgramCache]: Analyzing trace with hash -704674457, now seen corresponding path program 1 times [2018-11-10 07:42:05,322 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 07:42:05,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:42:05,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:42:05,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:42:05,324 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 07:42:05,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:42:05,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:42:05,340 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 07:42:05,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 07:42:05 BoogieIcfgContainer [2018-11-10 07:42:05,355 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 07:42:05,355 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 07:42:05,355 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 07:42:05,355 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 07:42:05,356 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:42:04" (3/4) ... [2018-11-10 07:42:05,357 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-10 07:42:05,380 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_51dc5504-15e4-49fa-84dc-997f745def03/bin-2019/utaipan/witness.graphml [2018-11-10 07:42:05,380 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 07:42:05,380 INFO L168 Benchmark]: Toolchain (without parser) took 770.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 962.5 MB in the beginning and 1.1 GB in the end (delta: -147.6 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2018-11-10 07:42:05,381 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 07:42:05,382 INFO L168 Benchmark]: CACSL2BoogieTranslator took 126.37 ms. Allocated memory is still 1.0 GB. Free memory was 962.5 MB in the beginning and 951.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 07:42:05,382 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.75 ms. Allocated memory is still 1.0 GB. Free memory is still 951.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 07:42:05,382 INFO L168 Benchmark]: Boogie Preprocessor took 14.25 ms. Allocated memory is still 1.0 GB. Free memory is still 951.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 07:42:05,382 INFO L168 Benchmark]: RCFGBuilder took 203.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 951.8 MB in the beginning and 1.1 GB in the end (delta: -195.0 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. [2018-11-10 07:42:05,383 INFO L168 Benchmark]: TraceAbstraction took 382.65 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: 36.6 MB). Peak memory consumption was 36.6 MB. Max. memory is 11.5 GB. [2018-11-10 07:42:05,383 INFO L168 Benchmark]: Witness Printer took 24.92 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. [2018-11-10 07:42:05,385 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 126.37 ms. Allocated memory is still 1.0 GB. Free memory was 962.5 MB in the beginning and 951.8 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 15.75 ms. Allocated memory is still 1.0 GB. Free memory is still 951.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.25 ms. Allocated memory is still 1.0 GB. Free memory is still 951.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 203.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 951.8 MB in the beginning and 1.1 GB in the end (delta: -195.0 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 382.65 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: 36.6 MB). Peak memory consumption was 36.6 MB. Max. memory is 11.5 GB. * Witness Printer took 24.92 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: integer overflow possible integer overflow possible We found a FailurePath: [L12] int input = __VERIFIER_nondet_int(); [L13] CALL id(input) VAL [\old(x)=-2147483648] [L5] COND FALSE !(x==0) VAL [\old(x)=-2147483648, x=-2147483648] [L6] x-1 VAL [\old(x)=-2147483648, x=-2147483648] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 28 locations, 4 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 30 SDslu, 38 SDs, 0 SdLazy, 19 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 128 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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 incorrect! Received shutdown request...