./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/recursive/Addition01_true-unreach-call_true-no-overflow_true-termination.c --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_0abfc1f4-bf47-4b10-9016-bbc6539ee317/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0abfc1f4-bf47-4b10-9016-bbc6539ee317/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0abfc1f4-bf47-4b10-9016-bbc6539ee317/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0abfc1f4-bf47-4b10-9016-bbc6539ee317/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/Addition01_true-unreach-call_true-no-overflow_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_0abfc1f4-bf47-4b10-9016-bbc6539ee317/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0abfc1f4-bf47-4b10-9016-bbc6539ee317/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 91d2600fad1210650d8ad3da481cdcc11b280095 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 08:58:52,193 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 08:58:52,194 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 08:58:52,202 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 08:58:52,203 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 08:58:52,203 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 08:58:52,204 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 08:58:52,205 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 08:58:52,206 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 08:58:52,207 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 08:58:52,207 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 08:58:52,208 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 08:58:52,208 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 08:58:52,209 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 08:58:52,210 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 08:58:52,210 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 08:58:52,211 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 08:58:52,212 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 08:58:52,213 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 08:58:52,214 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 08:58:52,215 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 08:58:52,215 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 08:58:52,217 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 08:58:52,217 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 08:58:52,217 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 08:58:52,218 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 08:58:52,219 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 08:58:52,219 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 08:58:52,220 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 08:58:52,220 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 08:58:52,221 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 08:58:52,221 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 08:58:52,221 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 08:58:52,221 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 08:58:52,222 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 08:58:52,222 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 08:58:52,223 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0abfc1f4-bf47-4b10-9016-bbc6539ee317/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-10 08:58:52,232 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 08:58:52,232 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 08:58:52,233 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 08:58:52,233 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 08:58:52,233 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 08:58:52,233 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 08:58:52,234 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 08:58:52,234 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 08:58:52,234 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 08:58:52,234 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 08:58:52,234 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 08:58:52,235 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 08:58:52,235 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 08:58:52,235 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 08:58:52,235 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 08:58:52,235 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 08:58:52,235 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 08:58:52,235 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 08:58:52,236 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 08:58:52,236 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 08:58:52,236 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 08:58:52,236 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 08:58:52,236 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 08:58:52,236 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 08:58:52,236 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 08:58:52,237 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 08:58:52,237 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 08:58:52,237 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 08:58:52,237 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 08:58:52,237 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 08:58:52,237 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 08:58:52,237 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 08:58:52,238 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 08:58:52,238 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 08:58:52,238 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_0abfc1f4-bf47-4b10-9016-bbc6539ee317/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 -> 91d2600fad1210650d8ad3da481cdcc11b280095 [2018-11-10 08:58:52,261 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 08:58:52,270 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 08:58:52,273 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 08:58:52,274 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 08:58:52,275 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 08:58:52,275 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0abfc1f4-bf47-4b10-9016-bbc6539ee317/bin-2019/utaipan/../../sv-benchmarks/c/recursive/Addition01_true-unreach-call_true-no-overflow_true-termination.c [2018-11-10 08:58:52,321 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0abfc1f4-bf47-4b10-9016-bbc6539ee317/bin-2019/utaipan/data/c116ea6f5/53fdb91384804a2ca04b949ff54c8a11/FLAG959129a8b [2018-11-10 08:58:52,711 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 08:58:52,711 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0abfc1f4-bf47-4b10-9016-bbc6539ee317/sv-benchmarks/c/recursive/Addition01_true-unreach-call_true-no-overflow_true-termination.c [2018-11-10 08:58:52,715 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0abfc1f4-bf47-4b10-9016-bbc6539ee317/bin-2019/utaipan/data/c116ea6f5/53fdb91384804a2ca04b949ff54c8a11/FLAG959129a8b [2018-11-10 08:58:52,724 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0abfc1f4-bf47-4b10-9016-bbc6539ee317/bin-2019/utaipan/data/c116ea6f5/53fdb91384804a2ca04b949ff54c8a11 [2018-11-10 08:58:52,725 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 08:58:52,726 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 08:58:52,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 08:58:52,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 08:58:52,730 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 08:58:52,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 08:58:52" (1/1) ... [2018-11-10 08:58:52,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eeb45d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:58:52, skipping insertion in model container [2018-11-10 08:58:52,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 08:58:52" (1/1) ... [2018-11-10 08:58:52,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 08:58:52,750 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 08:58:52,841 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 08:58:52,843 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 08:58:52,854 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 08:58:52,862 INFO L193 MainTranslator]: Completed translation [2018-11-10 08:58:52,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:58:52 WrapperNode [2018-11-10 08:58:52,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 08:58:52,863 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 08:58:52,863 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 08:58:52,863 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 08:58:52,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:58:52" (1/1) ... [2018-11-10 08:58:52,871 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:58:52" (1/1) ... [2018-11-10 08:58:52,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 08:58:52,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 08:58:52,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 08:58:52,875 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 08:58:52,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:58:52" (1/1) ... [2018-11-10 08:58:52,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:58:52" (1/1) ... [2018-11-10 08:58:52,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:58:52" (1/1) ... [2018-11-10 08:58:52,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:58:52" (1/1) ... [2018-11-10 08:58:52,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:58:52" (1/1) ... [2018-11-10 08:58:52,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:58:52" (1/1) ... [2018-11-10 08:58:52,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:58:52" (1/1) ... [2018-11-10 08:58:52,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 08:58:52,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 08:58:52,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 08:58:52,886 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 08:58:52,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:58:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0abfc1f4-bf47-4b10-9016-bbc6539ee317/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 08:58:52,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 08:58:52,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 08:58:52,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 08:58:52,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 08:58:52,975 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 08:58:52,975 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 08:58:52,976 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2018-11-10 08:58:52,976 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2018-11-10 08:58:53,084 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 08:58:53,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 08:58:53 BoogieIcfgContainer [2018-11-10 08:58:53,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 08:58:53,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 08:58:53,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 08:58:53,088 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 08:58:53,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 08:58:52" (1/3) ... [2018-11-10 08:58:53,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192b168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 08:58:53, skipping insertion in model container [2018-11-10 08:58:53,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:58:52" (2/3) ... [2018-11-10 08:58:53,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192b168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 08:58:53, skipping insertion in model container [2018-11-10 08:58:53,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 08:58:53" (3/3) ... [2018-11-10 08:58:53,091 INFO L112 eAbstractionObserver]: Analyzing ICFG Addition01_true-unreach-call_true-no-overflow_true-termination.c [2018-11-10 08:58:53,099 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 08:58:53,106 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 08:58:53,120 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 08:58:53,147 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 08:58:53,148 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 08:58:53,148 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 08:58:53,148 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 08:58:53,148 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 08:58:53,148 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 08:58:53,148 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 08:58:53,148 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 08:58:53,163 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2018-11-10 08:58:53,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-10 08:58:53,168 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:58:53,168 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:58:53,170 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 08:58:53,175 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:58:53,175 INFO L82 PathProgramCache]: Analyzing trace with hash -854965079, now seen corresponding path program 1 times [2018-11-10 08:58:53,177 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 08:58:53,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:58:53,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:58:53,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:58:53,216 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 08:58:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:58:53,382 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 08:58:53,383 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 08:58:53,383 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-10 08:58:53,383 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 08:58:53,386 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-10 08:58:53,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 08:58:53,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-10 08:58:53,396 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 6 states. [2018-11-10 08:58:53,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:58:53,544 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2018-11-10 08:58:53,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 08:58:53,545 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-11-10 08:58:53,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:58:53,554 INFO L225 Difference]: With dead ends: 38 [2018-11-10 08:58:53,554 INFO L226 Difference]: Without dead ends: 24 [2018-11-10 08:58:53,556 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-10 08:58:53,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-10 08:58:53,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-11-10 08:58:53,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-10 08:58:53,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2018-11-10 08:58:53,593 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 15 [2018-11-10 08:58:53,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:58:53,593 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2018-11-10 08:58:53,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-10 08:58:53,593 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2018-11-10 08:58:53,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-10 08:58:53,595 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:58:53,595 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:58:53,595 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 08:58:53,596 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:58:53,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1632999070, now seen corresponding path program 1 times [2018-11-10 08:58:53,596 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 08:58:53,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:58:53,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:58:53,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:58:53,597 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 08:58:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:58:53,623 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 08:58:53,623 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 08:58:53,623 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 08:58:53,623 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 08:58:53,625 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 08:58:53,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 08:58:53,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-10 08:58:53,625 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 4 states. [2018-11-10 08:58:53,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:58:53,644 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2018-11-10 08:58:53,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 08:58:53,644 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-11-10 08:58:53,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:58:53,645 INFO L225 Difference]: With dead ends: 34 [2018-11-10 08:58:53,645 INFO L226 Difference]: Without dead ends: 26 [2018-11-10 08:58:53,646 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-10 08:58:53,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-10 08:58:53,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2018-11-10 08:58:53,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-10 08:58:53,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-11-10 08:58:53,650 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 17 [2018-11-10 08:58:53,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:58:53,650 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-11-10 08:58:53,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 08:58:53,650 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2018-11-10 08:58:53,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-10 08:58:53,651 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:58:53,651 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:58:53,651 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 08:58:53,651 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:58:53,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1746800232, now seen corresponding path program 1 times [2018-11-10 08:58:53,652 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 08:58:53,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:58:53,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:58:53,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:58:53,653 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 08:58:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:58:53,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-10 08:58:53,803 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 08:58:53,804 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 08:58:53,804 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 23 with the following transitions: [2018-11-10 08:58:53,806 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [14], [18], [20], [23], [26], [27], [30], [32], [40], [41], [42], [43], [45], [46], [47], [48] [2018-11-10 08:58:53,838 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 08:58:53,839 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 08:58:54,046 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-10 08:58:54,047 INFO L272 AbstractInterpreter]: Visited 20 different actions 98 times. Merged at 7 different actions 44 times. Widened at 1 different actions 2 times. Found 2 fixpoints after 2 different actions. Largest state had 6 variables. [2018-11-10 08:58:54,073 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:58:54,074 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-10 08:58:54,074 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 08:58:54,074 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0abfc1f4-bf47-4b10-9016-bbc6539ee317/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 08:58:54,080 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:58:54,080 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-10 08:58:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:58:54,099 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:58:54,265 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-10 08:58:54,265 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 08:58:54,515 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-10 08:58:54,532 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 08:58:54,533 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2018-11-10 08:58:54,533 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 08:58:54,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-10 08:58:54,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-10 08:58:54,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2018-11-10 08:58:54,534 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 18 states. [2018-11-10 08:58:54,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:58:54,692 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2018-11-10 08:58:54,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-10 08:58:54,692 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 22 [2018-11-10 08:58:54,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:58:54,693 INFO L225 Difference]: With dead ends: 38 [2018-11-10 08:58:54,693 INFO L226 Difference]: Without dead ends: 32 [2018-11-10 08:58:54,694 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 29 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2018-11-10 08:58:54,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-10 08:58:54,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2018-11-10 08:58:54,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-10 08:58:54,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2018-11-10 08:58:54,698 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 22 [2018-11-10 08:58:54,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:58:54,699 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2018-11-10 08:58:54,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-10 08:58:54,699 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2018-11-10 08:58:54,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-10 08:58:54,700 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:58:54,700 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:58:54,700 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 08:58:54,701 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:58:54,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1365148867, now seen corresponding path program 1 times [2018-11-10 08:58:54,701 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 08:58:54,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:58:54,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:58:54,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:58:54,702 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 08:58:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:58:54,742 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-10 08:58:54,742 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 08:58:54,742 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 08:58:54,743 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2018-11-10 08:58:54,743 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [14], [18], [20], [23], [26], [27], [33], [36], [38], [40], [41], [42], [43], [45], [46], [49], [50] [2018-11-10 08:58:54,744 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 08:58:54,744 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 08:58:54,758 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-10 08:58:54,758 INFO L272 AbstractInterpreter]: Visited 17 different actions 17 times. Never merged. Never widened. Never found a fixpoint. Largest state had 6 variables. [2018-11-10 08:58:54,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:58:54,761 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-10 08:58:54,761 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 08:58:54,761 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0abfc1f4-bf47-4b10-9016-bbc6539ee317/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 08:58:54,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:58:54,767 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-10 08:58:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:58:54,774 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:58:54,779 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-10 08:58:54,779 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 08:58:54,810 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-10 08:58:54,826 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 08:58:54,826 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 8 [2018-11-10 08:58:54,826 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 08:58:54,826 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-10 08:58:54,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-10 08:58:54,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-10 08:58:54,827 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 7 states. [2018-11-10 08:58:54,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:58:54,854 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2018-11-10 08:58:54,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 08:58:54,854 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2018-11-10 08:58:54,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:58:54,855 INFO L225 Difference]: With dead ends: 27 [2018-11-10 08:58:54,855 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 08:58:54,855 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-10 08:58:54,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 08:58:54,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 08:58:54,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 08:58:54,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 08:58:54,855 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2018-11-10 08:58:54,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:58:54,856 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 08:58:54,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-10 08:58:54,856 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 08:58:54,856 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 08:58:54,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 08:58:54,915 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-10 08:58:54,915 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 08:58:54,915 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 08:58:54,915 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 08:58:54,915 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 08:58:54,915 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 08:58:54,915 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 26 45) the Hoare annotation is: true [2018-11-10 08:58:54,915 INFO L425 ceAbstractionStarter]: For program point L28(lines 28 32) no Hoare annotation was computed. [2018-11-10 08:58:54,916 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 26 45) no Hoare annotation was computed. [2018-11-10 08:58:54,916 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 43) no Hoare annotation was computed. [2018-11-10 08:58:54,916 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 26 45) no Hoare annotation was computed. [2018-11-10 08:58:54,916 INFO L425 ceAbstractionStarter]: For program point L43(line 43) no Hoare annotation was computed. [2018-11-10 08:58:54,916 INFO L425 ceAbstractionStarter]: For program point L40(lines 40 44) no Hoare annotation was computed. [2018-11-10 08:58:54,916 INFO L421 ceAbstractionStarter]: At program point L39(line 39) the Hoare annotation is: (<= 0 main_~n~0) [2018-11-10 08:58:54,916 INFO L425 ceAbstractionStarter]: For program point L39-1(line 39) no Hoare annotation was computed. [2018-11-10 08:58:54,916 INFO L425 ceAbstractionStarter]: For program point L34(lines 34 38) no Hoare annotation was computed. [2018-11-10 08:58:54,916 INFO L425 ceAbstractionStarter]: For program point additionFINAL(lines 13 23) no Hoare annotation was computed. [2018-11-10 08:58:54,916 INFO L421 ceAbstractionStarter]: At program point L21(line 21) the Hoare annotation is: (let ((.cse1 (+ |addition_#in~n| |addition_#in~m|)) (.cse0 (+ addition_~m addition_~n))) (and (<= .cse0 .cse1) (= |addition_#in~m| addition_~m) (<= .cse1 .cse0) (<= (+ addition_~n 1) 0))) [2018-11-10 08:58:54,916 INFO L425 ceAbstractionStarter]: For program point L20(lines 20 22) no Hoare annotation was computed. [2018-11-10 08:58:54,916 INFO L425 ceAbstractionStarter]: For program point L21-1(line 21) no Hoare annotation was computed. [2018-11-10 08:58:54,917 INFO L421 ceAbstractionStarter]: At program point L18(line 18) the Hoare annotation is: (let ((.cse1 (+ |addition_#in~n| |addition_#in~m|)) (.cse0 (+ addition_~m addition_~n))) (and (<= .cse0 .cse1) (< 0 addition_~n) (= |addition_#in~m| addition_~m) (<= .cse1 .cse0))) [2018-11-10 08:58:54,917 INFO L425 ceAbstractionStarter]: For program point L17(lines 17 19) no Hoare annotation was computed. [2018-11-10 08:58:54,917 INFO L425 ceAbstractionStarter]: For program point L18-1(line 18) no Hoare annotation was computed. [2018-11-10 08:58:54,917 INFO L428 ceAbstractionStarter]: At program point additionENTRY(lines 13 23) the Hoare annotation is: true [2018-11-10 08:58:54,917 INFO L425 ceAbstractionStarter]: For program point L14(lines 14 16) no Hoare annotation was computed. [2018-11-10 08:58:54,917 INFO L425 ceAbstractionStarter]: For program point additionEXIT(lines 13 23) no Hoare annotation was computed. [2018-11-10 08:58:54,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 08:58:54 BoogieIcfgContainer [2018-11-10 08:58:54,919 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 08:58:54,919 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 08:58:54,919 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 08:58:54,919 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 08:58:54,919 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 08:58:53" (3/4) ... [2018-11-10 08:58:54,922 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 08:58:54,925 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 08:58:54,926 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 08:58:54,926 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure addition [2018-11-10 08:58:54,928 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-10 08:58:54,928 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-10 08:58:54,929 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 08:58:54,956 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_0abfc1f4-bf47-4b10-9016-bbc6539ee317/bin-2019/utaipan/witness.graphml [2018-11-10 08:58:54,956 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 08:58:54,957 INFO L168 Benchmark]: Toolchain (without parser) took 2231.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 960.3 MB in the beginning and 866.3 MB in the end (delta: 94.0 MB). Peak memory consumption was 254.9 MB. Max. memory is 11.5 GB. [2018-11-10 08:58:54,958 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 08:58:54,958 INFO L168 Benchmark]: CACSL2BoogieTranslator took 135.43 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 08:58:54,958 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.32 ms. Allocated memory is still 1.0 GB. Free memory is still 949.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 08:58:54,958 INFO L168 Benchmark]: Boogie Preprocessor took 10.84 ms. Allocated memory is still 1.0 GB. Free memory was 949.6 MB in the beginning and 946.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 08:58:54,959 INFO L168 Benchmark]: RCFGBuilder took 198.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -199.6 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2018-11-10 08:58:54,959 INFO L168 Benchmark]: TraceAbstraction took 1833.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 869.8 MB in the end (delta: 276.7 MB). Peak memory consumption was 276.7 MB. Max. memory is 11.5 GB. [2018-11-10 08:58:54,959 INFO L168 Benchmark]: Witness Printer took 37.64 ms. Allocated memory is still 1.2 GB. Free memory was 869.8 MB in the beginning and 866.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-10 08:58:54,961 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 135.43 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.6 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 12.32 ms. Allocated memory is still 1.0 GB. Free memory is still 949.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.84 ms. Allocated memory is still 1.0 GB. Free memory was 949.6 MB in the beginning and 946.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 198.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -199.6 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1833.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 869.8 MB in the end (delta: 276.7 MB). Peak memory consumption was 276.7 MB. Max. memory is 11.5 GB. * Witness Printer took 37.64 ms. Allocated memory is still 1.2 GB. Free memory was 869.8 MB in the beginning and 866.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. SAFE Result, 1.7s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 86 SDtfs, 71 SDslu, 214 SDs, 0 SdLazy, 272 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 76 SyntacticMatches, 8 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 2 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 14 NumberOfFragments, 52 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 16 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 159 ConstructedInterpolants, 0 QuantifiedInterpolants, 13597 SizeOfPredicates, 12 NumberOfNonLiveVariables, 129 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 12/24 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...