./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/gcd01_true-unreach-call_true-no-overflow_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_fe88b484-d08c-45b6-9680-d94ac7a6f44b/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_fe88b484-d08c-45b6-9680-d94ac7a6f44b/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_fe88b484-d08c-45b6-9680-d94ac7a6f44b/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_fe88b484-d08c-45b6-9680-d94ac7a6f44b/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/gcd01_true-unreach-call_true-no-overflow_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_fe88b484-d08c-45b6-9680-d94ac7a6f44b/bin-2019/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_fe88b484-d08c-45b6-9680-d94ac7a6f44b/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 0497b69437c9ebb889888bdb31aaefcc8eaad029 ............................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 10:09:26,088 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 10:09:26,089 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 10:09:26,096 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 10:09:26,096 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 10:09:26,097 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 10:09:26,098 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 10:09:26,099 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 10:09:26,100 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 10:09:26,100 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 10:09:26,101 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 10:09:26,101 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 10:09:26,102 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 10:09:26,102 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 10:09:26,103 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 10:09:26,104 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 10:09:26,104 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 10:09:26,105 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 10:09:26,107 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 10:09:26,108 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 10:09:26,109 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 10:09:26,109 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 10:09:26,111 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 10:09:26,111 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 10:09:26,111 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 10:09:26,112 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 10:09:26,113 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 10:09:26,113 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 10:09:26,114 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 10:09:26,115 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 10:09:26,115 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 10:09:26,115 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 10:09:26,115 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 10:09:26,116 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 10:09:26,116 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 10:09:26,117 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 10:09:26,117 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_fe88b484-d08c-45b6-9680-d94ac7a6f44b/bin-2019/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2018-12-09 10:09:26,127 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 10:09:26,127 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 10:09:26,128 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 10:09:26,128 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 10:09:26,128 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 10:09:26,128 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 10:09:26,129 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 10:09:26,129 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 10:09:26,129 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 10:09:26,129 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 10:09:26,129 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 10:09:26,129 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 10:09:26,129 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 10:09:26,130 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 10:09:26,130 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 10:09:26,130 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 10:09:26,130 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 10:09:26,130 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 10:09:26,130 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 10:09:26,131 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 10:09:26,131 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 10:09:26,131 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 10:09:26,131 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-12-09 10:09:26,131 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 10:09:26,131 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 10:09:26,131 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 10:09:26,131 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 10:09:26,131 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 10:09:26,132 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 10:09:26,132 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 10:09:26,132 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 10:09:26,132 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 10:09:26,132 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 10:09:26,132 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 10:09:26,132 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 10:09:26,132 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 10:09:26,132 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 10:09:26,132 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 10:09:26,132 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_fe88b484-d08c-45b6-9680-d94ac7a6f44b/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 -> 0497b69437c9ebb889888bdb31aaefcc8eaad029 [2018-12-09 10:09:26,155 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 10:09:26,164 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 10:09:26,167 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 10:09:26,168 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 10:09:26,168 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 10:09:26,169 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_fe88b484-d08c-45b6-9680-d94ac7a6f44b/bin-2019/utaipan/../../sv-benchmarks/c/recursive/gcd01_true-unreach-call_true-no-overflow_true-termination.c [2018-12-09 10:09:26,205 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fe88b484-d08c-45b6-9680-d94ac7a6f44b/bin-2019/utaipan/data/1b3326a60/4337bf89257e47d1a389acf7507afba7/FLAG582327c03 [2018-12-09 10:09:26,635 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 10:09:26,636 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_fe88b484-d08c-45b6-9680-d94ac7a6f44b/sv-benchmarks/c/recursive/gcd01_true-unreach-call_true-no-overflow_true-termination.c [2018-12-09 10:09:26,639 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fe88b484-d08c-45b6-9680-d94ac7a6f44b/bin-2019/utaipan/data/1b3326a60/4337bf89257e47d1a389acf7507afba7/FLAG582327c03 [2018-12-09 10:09:26,648 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_fe88b484-d08c-45b6-9680-d94ac7a6f44b/bin-2019/utaipan/data/1b3326a60/4337bf89257e47d1a389acf7507afba7 [2018-12-09 10:09:26,650 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 10:09:26,651 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 10:09:26,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 10:09:26,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 10:09:26,654 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 10:09:26,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:09:26" (1/1) ... [2018-12-09 10:09:26,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54724d61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:09:26, skipping insertion in model container [2018-12-09 10:09:26,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:09:26" (1/1) ... [2018-12-09 10:09:26,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 10:09:26,671 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 10:09:26,755 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 10:09:26,757 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 10:09:26,766 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 10:09:26,774 INFO L195 MainTranslator]: Completed translation [2018-12-09 10:09:26,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:09:26 WrapperNode [2018-12-09 10:09:26,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 10:09:26,775 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 10:09:26,775 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 10:09:26,775 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 10:09:26,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:09:26" (1/1) ... [2018-12-09 10:09:26,782 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:09:26" (1/1) ... [2018-12-09 10:09:26,786 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 10:09:26,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 10:09:26,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 10:09:26,786 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 10:09:26,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:09:26" (1/1) ... [2018-12-09 10:09:26,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:09:26" (1/1) ... [2018-12-09 10:09:26,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:09:26" (1/1) ... [2018-12-09 10:09:26,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:09:26" (1/1) ... [2018-12-09 10:09:26,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:09:26" (1/1) ... [2018-12-09 10:09:26,795 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:09:26" (1/1) ... [2018-12-09 10:09:26,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:09:26" (1/1) ... [2018-12-09 10:09:26,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 10:09:26,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 10:09:26,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 10:09:26,796 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 10:09:26,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:09:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fe88b484-d08c-45b6-9680-d94ac7a6f44b/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 [2018-12-09 10:09:26,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 10:09:26,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 10:09:26,857 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2018-12-09 10:09:26,857 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2018-12-09 10:09:26,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 10:09:26,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 10:09:26,857 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 10:09:26,857 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 10:09:26,948 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 10:09:26,948 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-09 10:09:26,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:09:26 BoogieIcfgContainer [2018-12-09 10:09:26,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 10:09:26,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 10:09:26,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 10:09:26,951 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 10:09:26,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 10:09:26" (1/3) ... [2018-12-09 10:09:26,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c05fcaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:09:26, skipping insertion in model container [2018-12-09 10:09:26,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:09:26" (2/3) ... [2018-12-09 10:09:26,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c05fcaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:09:26, skipping insertion in model container [2018-12-09 10:09:26,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:09:26" (3/3) ... [2018-12-09 10:09:26,952 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd01_true-unreach-call_true-no-overflow_true-termination.c [2018-12-09 10:09:26,958 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 10:09:26,962 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-12-09 10:09:26,971 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-12-09 10:09:26,988 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 10:09:26,988 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 10:09:26,988 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 10:09:26,989 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 10:09:26,989 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 10:09:26,989 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 10:09:26,989 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 10:09:26,989 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 10:09:26,998 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-12-09 10:09:27,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-09 10:09:27,001 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 10:09:27,002 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 10:09:27,003 INFO L423 AbstractCegarLoop]: === Iteration 1 === [gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 10:09:27,006 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:09:27,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1905154814, now seen corresponding path program 1 times [2018-12-09 10:09:27,007 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 10:09:27,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:09:27,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 10:09:27,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:09:27,037 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 10:09:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:09:27,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 10:09:27,114 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 10:09:27,114 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 10:09:27,114 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 10:09:27,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 10:09:27,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 10:09:27,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-09 10:09:27,125 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 6 states. [2018-12-09 10:09:27,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 10:09:27,228 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2018-12-09 10:09:27,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 10:09:27,229 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-12-09 10:09:27,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 10:09:27,237 INFO L225 Difference]: With dead ends: 41 [2018-12-09 10:09:27,237 INFO L226 Difference]: Without dead ends: 20 [2018-12-09 10:09:27,240 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-12-09 10:09:27,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-12-09 10:09:27,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-12-09 10:09:27,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-12-09 10:09:27,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-12-09 10:09:27,270 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2018-12-09 10:09:27,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 10:09:27,270 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-12-09 10:09:27,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 10:09:27,270 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-12-09 10:09:27,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-09 10:09:27,271 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 10:09:27,271 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 10:09:27,271 INFO L423 AbstractCegarLoop]: === Iteration 2 === [gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 10:09:27,271 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:09:27,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1905155038, now seen corresponding path program 1 times [2018-12-09 10:09:27,272 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 10:09:27,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:09:27,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 10:09:27,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:09:27,273 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 10:09:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:09:27,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 10:09:27,316 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 10:09:27,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 10:09:27,316 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 10:09:27,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 10:09:27,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 10:09:27,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-09 10:09:27,318 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 6 states. [2018-12-09 10:09:27,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 10:09:27,355 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2018-12-09 10:09:27,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 10:09:27,355 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-12-09 10:09:27,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 10:09:27,355 INFO L225 Difference]: With dead ends: 20 [2018-12-09 10:09:27,355 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 10:09:27,356 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-12-09 10:09:27,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 10:09:27,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 10:09:27,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 10:09:27,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 10:09:27,357 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-12-09 10:09:27,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 10:09:27,357 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 10:09:27,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 10:09:27,357 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 10:09:27,357 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 10:09:27,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 10:09:27,427 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-09 10:09:27,427 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 10:09:27,427 INFO L448 ceAbstractionStarter]: For program point gcdFINAL(lines 15 26) no Hoare annotation was computed. [2018-12-09 10:09:27,427 INFO L448 ceAbstractionStarter]: For program point gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2018-12-09 10:09:27,428 INFO L448 ceAbstractionStarter]: For program point gcdEXIT(lines 15 26) no Hoare annotation was computed. [2018-12-09 10:09:27,428 INFO L448 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-12-09 10:09:27,428 INFO L448 ceAbstractionStarter]: For program point L25-1(line 25) no Hoare annotation was computed. [2018-12-09 10:09:27,428 INFO L451 ceAbstractionStarter]: At program point gcdENTRY(lines 15 26) the Hoare annotation is: true [2018-12-09 10:09:27,428 INFO L448 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-12-09 10:09:27,428 INFO L444 ceAbstractionStarter]: At program point L25-2(line 25) the Hoare annotation is: (or (< 2147483647 |gcd_#in~y1|) (and (<= gcd_~y2 (+ gcd_~y1 2147483646)) (<= gcd_~y2 2147483647) (<= gcd_~y1 2147483647) (<= gcd_~y1 (+ gcd_~y2 2147483646))) (< 2147483647 |gcd_#in~y2|)) [2018-12-09 10:09:27,428 INFO L448 ceAbstractionStarter]: For program point L22(lines 22 24) no Hoare annotation was computed. [2018-12-09 10:09:27,428 INFO L448 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-12-09 10:09:27,428 INFO L448 ceAbstractionStarter]: For program point L25-3(line 25) no Hoare annotation was computed. [2018-12-09 10:09:27,428 INFO L444 ceAbstractionStarter]: At program point L23-2(line 23) the Hoare annotation is: (or (< 2147483647 |gcd_#in~y1|) (and (<= gcd_~y2 (+ gcd_~y1 2147483646)) (<= gcd_~y2 2147483647) (<= gcd_~y1 2147483647) (<= gcd_~y1 (+ gcd_~y2 2147483646))) (< 2147483647 |gcd_#in~y2|)) [2018-12-09 10:09:27,428 INFO L448 ceAbstractionStarter]: For program point L23-3(line 23) no Hoare annotation was computed. [2018-12-09 10:09:27,428 INFO L448 ceAbstractionStarter]: For program point L19(lines 19 21) no Hoare annotation was computed. [2018-12-09 10:09:27,428 INFO L448 ceAbstractionStarter]: For program point L16(lines 16 18) no Hoare annotation was computed. [2018-12-09 10:09:27,429 INFO L448 ceAbstractionStarter]: For program point gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2018-12-09 10:09:27,429 INFO L448 ceAbstractionStarter]: For program point gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2018-12-09 10:09:27,429 INFO L448 ceAbstractionStarter]: For program point gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2018-12-09 10:09:27,429 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 10:09:27,429 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 10:09:27,429 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 10:09:27,429 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 10:09:27,429 INFO L448 ceAbstractionStarter]: For program point L30(lines 30 32) no Hoare annotation was computed. [2018-12-09 10:09:27,429 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 28 43) the Hoare annotation is: true [2018-12-09 10:09:27,429 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 28 43) no Hoare annotation was computed. [2018-12-09 10:09:27,429 INFO L448 ceAbstractionStarter]: For program point L39(line 39) no Hoare annotation was computed. [2018-12-09 10:09:27,429 INFO L448 ceAbstractionStarter]: For program point L38(lines 38 42) no Hoare annotation was computed. [2018-12-09 10:09:27,429 INFO L444 ceAbstractionStarter]: At program point L37(line 37) the Hoare annotation is: (and (<= main_~n~0 2147483647) (<= main_~m~0 2147483647)) [2018-12-09 10:09:27,429 INFO L448 ceAbstractionStarter]: For program point L38-1(lines 28 43) no Hoare annotation was computed. [2018-12-09 10:09:27,429 INFO L448 ceAbstractionStarter]: For program point L37-1(line 37) no Hoare annotation was computed. [2018-12-09 10:09:27,430 INFO L448 ceAbstractionStarter]: For program point L34(lines 34 36) no Hoare annotation was computed. [2018-12-09 10:09:27,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 10:09:27 BoogieIcfgContainer [2018-12-09 10:09:27,431 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 10:09:27,432 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 10:09:27,432 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 10:09:27,432 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 10:09:27,432 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:09:26" (3/4) ... [2018-12-09 10:09:27,434 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 10:09:27,438 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 10:09:27,438 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure gcd [2018-12-09 10:09:27,439 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 10:09:27,441 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-09 10:09:27,441 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-09 10:09:27,441 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 10:09:27,467 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_fe88b484-d08c-45b6-9680-d94ac7a6f44b/bin-2019/utaipan/witness.graphml [2018-12-09 10:09:27,467 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 10:09:27,468 INFO L168 Benchmark]: Toolchain (without parser) took 817.49 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 73.4 MB). Free memory was 950.8 MB in the beginning and 981.1 MB in the end (delta: -30.4 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. [2018-12-09 10:09:27,469 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 10:09:27,469 INFO L168 Benchmark]: CACSL2BoogieTranslator took 122.58 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 940.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 10:09:27,469 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.00 ms. Allocated memory is still 1.0 GB. Free memory is still 940.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 10:09:27,469 INFO L168 Benchmark]: Boogie Preprocessor took 10.10 ms. Allocated memory is still 1.0 GB. Free memory is still 940.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 10:09:27,470 INFO L168 Benchmark]: RCFGBuilder took 152.24 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 73.4 MB). Free memory was 940.0 MB in the beginning and 1.1 GB in the end (delta: -115.9 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. [2018-12-09 10:09:27,470 INFO L168 Benchmark]: TraceAbstraction took 482.78 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 984.7 MB in the end (delta: 67.7 MB). Peak memory consumption was 67.7 MB. Max. memory is 11.5 GB. [2018-12-09 10:09:27,470 INFO L168 Benchmark]: Witness Printer took 35.86 ms. Allocated memory is still 1.1 GB. Free memory was 984.7 MB in the beginning and 981.1 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 11.5 GB. [2018-12-09 10:09:27,471 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 122.58 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 940.0 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 11.00 ms. Allocated memory is still 1.0 GB. Free memory is still 940.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.10 ms. Allocated memory is still 1.0 GB. Free memory is still 940.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 152.24 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 73.4 MB). Free memory was 940.0 MB in the beginning and 1.1 GB in the end (delta: -115.9 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 482.78 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 984.7 MB in the end (delta: 67.7 MB). Peak memory consumption was 67.7 MB. Max. memory is 11.5 GB. * Witness Printer took 35.86 ms. Allocated memory is still 1.1 GB. Free memory was 984.7 MB in the beginning and 981.1 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 33 locations, 4 error locations. SAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 29 SDtfs, 69 SDslu, 82 SDs, 0 SdLazy, 95 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 14 NumberOfFragments, 64 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 12 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 744 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...