./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/recursive-simple/id_b3_o5_true-unreach-call_true-termination_true-no-overflow.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_23b39015-e378-4a0f-9953-1cce748ca90d/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_23b39015-e378-4a0f-9953-1cce748ca90d/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_23b39015-e378-4a0f-9953-1cce748ca90d/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_23b39015-e378-4a0f-9953-1cce748ca90d/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_b3_o5_true-unreach-call_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_23b39015-e378-4a0f-9953-1cce748ca90d/bin-2019/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_23b39015-e378-4a0f-9953-1cce748ca90d/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 8d39666f7b9e3c393826226f879477647e7209cc ........................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-27 05:49:52,345 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 05:49:52,346 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 05:49:52,355 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 05:49:52,355 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 05:49:52,356 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 05:49:52,357 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 05:49:52,358 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 05:49:52,360 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 05:49:52,361 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 05:49:52,361 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 05:49:52,362 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 05:49:52,362 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 05:49:52,363 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 05:49:52,364 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 05:49:52,365 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 05:49:52,366 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 05:49:52,367 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 05:49:52,369 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 05:49:52,370 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 05:49:52,371 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 05:49:52,372 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 05:49:52,374 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 05:49:52,374 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 05:49:52,374 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 05:49:52,375 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 05:49:52,376 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 05:49:52,376 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 05:49:52,377 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 05:49:52,378 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 05:49:52,378 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 05:49:52,378 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 05:49:52,379 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 05:49:52,379 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 05:49:52,380 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 05:49:52,381 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 05:49:52,381 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_23b39015-e378-4a0f-9953-1cce748ca90d/bin-2019/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2018-10-27 05:49:52,397 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 05:49:52,400 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 05:49:52,401 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 05:49:52,401 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 05:49:52,401 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 05:49:52,401 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 05:49:52,401 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 05:49:52,402 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 05:49:52,402 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 05:49:52,402 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 05:49:52,402 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 05:49:52,403 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 05:49:52,403 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-27 05:49:52,403 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 05:49:52,403 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 05:49:52,403 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-27 05:49:52,403 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 05:49:52,406 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 05:49:52,406 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 05:49:52,406 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 05:49:52,407 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-10-27 05:49:52,407 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-27 05:49:52,407 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 05:49:52,407 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 05:49:52,408 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 05:49:52,408 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 05:49:52,408 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 05:49:52,409 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 05:49:52,409 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:49:52,409 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 05:49:52,409 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 05:49:52,409 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 05:49:52,409 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 05:49:52,410 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 05:49:52,410 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 05:49:52,410 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 05:49:52,410 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_23b39015-e378-4a0f-9953-1cce748ca90d/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 -> 8d39666f7b9e3c393826226f879477647e7209cc [2018-10-27 05:49:52,445 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 05:49:52,455 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 05:49:52,458 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 05:49:52,460 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 05:49:52,460 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 05:49:52,461 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_23b39015-e378-4a0f-9953-1cce748ca90d/bin-2019/utaipan/../../sv-benchmarks/c/recursive-simple/id_b3_o5_true-unreach-call_true-termination_true-no-overflow.c [2018-10-27 05:49:52,502 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_23b39015-e378-4a0f-9953-1cce748ca90d/bin-2019/utaipan/data/b8915f094/7c1e09836ea441a8ae6919cd9850cd07/FLAGa8c44e36b [2018-10-27 05:49:52,836 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 05:49:52,837 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_23b39015-e378-4a0f-9953-1cce748ca90d/sv-benchmarks/c/recursive-simple/id_b3_o5_true-unreach-call_true-termination_true-no-overflow.c [2018-10-27 05:49:52,841 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_23b39015-e378-4a0f-9953-1cce748ca90d/bin-2019/utaipan/data/b8915f094/7c1e09836ea441a8ae6919cd9850cd07/FLAGa8c44e36b [2018-10-27 05:49:52,852 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_23b39015-e378-4a0f-9953-1cce748ca90d/bin-2019/utaipan/data/b8915f094/7c1e09836ea441a8ae6919cd9850cd07 [2018-10-27 05:49:52,854 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 05:49:52,855 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 05:49:52,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 05:49:52,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 05:49:52,859 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 05:49:52,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:49:52" (1/1) ... [2018-10-27 05:49:52,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@336b396f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:52, skipping insertion in model container [2018-10-27 05:49:52,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:49:52" (1/1) ... [2018-10-27 05:49:52,870 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 05:49:52,882 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 05:49:53,002 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:49:53,005 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 05:49:53,017 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:49:53,026 INFO L193 MainTranslator]: Completed translation [2018-10-27 05:49:53,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:53 WrapperNode [2018-10-27 05:49:53,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 05:49:53,028 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 05:49:53,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 05:49:53,028 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 05:49:53,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:53" (1/1) ... [2018-10-27 05:49:53,042 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:53" (1/1) ... [2018-10-27 05:49:53,048 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 05:49:53,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 05:49:53,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 05:49:53,049 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 05:49:53,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:53" (1/1) ... [2018-10-27 05:49:53,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:53" (1/1) ... [2018-10-27 05:49:53,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:53" (1/1) ... [2018-10-27 05:49:53,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:53" (1/1) ... [2018-10-27 05:49:53,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:53" (1/1) ... [2018-10-27 05:49:53,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:53" (1/1) ... [2018-10-27 05:49:53,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:53" (1/1) ... [2018-10-27 05:49:53,069 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 05:49:53,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 05:49:53,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 05:49:53,070 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 05:49:53,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_23b39015-e378-4a0f-9953-1cce748ca90d/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:49:53,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 05:49:53,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 05:49:53,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 05:49:53,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 05:49:53,218 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 05:49:53,218 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 05:49:53,219 INFO L130 BoogieDeclarations]: Found specification of procedure id [2018-10-27 05:49:53,220 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2018-10-27 05:49:53,489 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 05:49:53,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:49:53 BoogieIcfgContainer [2018-10-27 05:49:53,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 05:49:53,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 05:49:53,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 05:49:53,493 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 05:49:53,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:49:52" (1/3) ... [2018-10-27 05:49:53,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22df9f9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:49:53, skipping insertion in model container [2018-10-27 05:49:53,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:53" (2/3) ... [2018-10-27 05:49:53,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22df9f9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:49:53, skipping insertion in model container [2018-10-27 05:49:53,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:49:53" (3/3) ... [2018-10-27 05:49:53,498 INFO L112 eAbstractionObserver]: Analyzing ICFG id_b3_o5_true-unreach-call_true-termination_true-no-overflow.c [2018-10-27 05:49:53,506 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 05:49:53,512 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-10-27 05:49:53,557 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-10-27 05:49:53,601 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 05:49:53,601 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 05:49:53,601 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 05:49:53,601 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 05:49:53,601 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 05:49:53,601 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 05:49:53,601 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 05:49:53,601 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 05:49:53,618 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-10-27 05:49:53,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-27 05:49:53,627 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:49:53,628 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:49:53,630 INFO L424 AbstractCegarLoop]: === Iteration 1 === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:49:53,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:49:53,637 INFO L82 PathProgramCache]: Analyzing trace with hash 755938958, now seen corresponding path program 1 times [2018-10-27 05:49:53,639 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:49:53,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:49:53,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:49:53,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:49:53,684 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:49:53,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:49:53,860 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-27 05:49:53,862 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:49:53,862 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 05:49:53,862 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:49:53,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 05:49:53,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 05:49:53,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:49:53,876 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2018-10-27 05:49:53,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:49:53,968 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2018-10-27 05:49:53,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 05:49:53,973 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-10-27 05:49:53,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:49:53,983 INFO L225 Difference]: With dead ends: 35 [2018-10-27 05:49:53,985 INFO L226 Difference]: Without dead ends: 22 [2018-10-27 05:49:53,987 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:49:53,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-27 05:49:54,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-10-27 05:49:54,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-27 05:49:54,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2018-10-27 05:49:54,017 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 18 [2018-10-27 05:49:54,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:49:54,018 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2018-10-27 05:49:54,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 05:49:54,018 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2018-10-27 05:49:54,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-27 05:49:54,019 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:49:54,019 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:49:54,019 INFO L424 AbstractCegarLoop]: === Iteration 2 === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:49:54,019 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:49:54,019 INFO L82 PathProgramCache]: Analyzing trace with hash 323921339, now seen corresponding path program 1 times [2018-10-27 05:49:54,019 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:49:54,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:49:54,020 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:49:54,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:49:54,021 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:49:54,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:49:54,107 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-27 05:49:54,107 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:49:54,107 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 05:49:54,107 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:49:54,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 05:49:54,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 05:49:54,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 05:49:54,109 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 5 states. [2018-10-27 05:49:54,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:49:54,178 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-10-27 05:49:54,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-27 05:49:54,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-10-27 05:49:54,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:49:54,181 INFO L225 Difference]: With dead ends: 33 [2018-10-27 05:49:54,181 INFO L226 Difference]: Without dead ends: 25 [2018-10-27 05:49:54,182 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 05:49:54,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-27 05:49:54,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2018-10-27 05:49:54,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-27 05:49:54,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-10-27 05:49:54,186 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 24 [2018-10-27 05:49:54,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:49:54,186 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-10-27 05:49:54,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 05:49:54,186 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-10-27 05:49:54,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-27 05:49:54,187 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:49:54,187 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:49:54,187 INFO L424 AbstractCegarLoop]: === Iteration 3 === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:49:54,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:49:54,188 INFO L82 PathProgramCache]: Analyzing trace with hash 324844860, now seen corresponding path program 1 times [2018-10-27 05:49:54,188 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:49:54,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:49:54,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:49:54,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:49:54,189 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:49:54,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:49:54,385 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-27 05:49:54,385 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:49:54,385 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:49:54,386 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-10-27 05:49:54,387 INFO L202 CegarAbsIntRunner]: [0], [4], [16], [19], [20], [22], [23], [24], [26], [30], [31], [32], [33], [34], [36], [38], [39] [2018-10-27 05:49:54,429 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 05:49:54,430 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:49:54,527 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 05:49:54,653 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:49:54,655 INFO L272 AbstractInterpreter]: Visited 17 different actions 68 times. Merged at 6 different actions 24 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 5 variables. [2018-10-27 05:49:54,670 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:49:54,670 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:49:54,785 INFO L227 lantSequenceWeakener]: Weakened 15 states. On average, predicates are now at 63.33% of their original sizes. [2018-10-27 05:49:54,786 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:49:55,192 INFO L415 sIntCurrentIteration]: We unified 23 AI predicates to 23 [2018-10-27 05:49:55,192 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:49:55,192 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:49:55,193 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 18 [2018-10-27 05:49:55,193 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:49:55,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-27 05:49:55,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-27 05:49:55,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2018-10-27 05:49:55,195 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 14 states. [2018-10-27 05:49:56,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:49:56,116 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2018-10-27 05:49:56,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-27 05:49:56,117 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 24 [2018-10-27 05:49:56,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:49:56,117 INFO L225 Difference]: With dead ends: 30 [2018-10-27 05:49:56,118 INFO L226 Difference]: Without dead ends: 28 [2018-10-27 05:49:56,123 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2018-10-27 05:49:56,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-27 05:49:56,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-10-27 05:49:56,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-27 05:49:56,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2018-10-27 05:49:56,130 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 24 [2018-10-27 05:49:56,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:49:56,130 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2018-10-27 05:49:56,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-27 05:49:56,131 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2018-10-27 05:49:56,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-27 05:49:56,132 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:49:56,132 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:49:56,132 INFO L424 AbstractCegarLoop]: === Iteration 4 === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:49:56,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:49:56,133 INFO L82 PathProgramCache]: Analyzing trace with hash 313120041, now seen corresponding path program 1 times [2018-10-27 05:49:56,133 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:49:56,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:49:56,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:49:56,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:49:56,135 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:49:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:49:56,226 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-10-27 05:49:56,226 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:49:56,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 05:49:56,226 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:49:56,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 05:49:56,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 05:49:56,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:49:56,227 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 4 states. [2018-10-27 05:49:56,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:49:56,370 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2018-10-27 05:49:56,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 05:49:56,370 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-10-27 05:49:56,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:49:56,371 INFO L225 Difference]: With dead ends: 28 [2018-10-27 05:49:56,371 INFO L226 Difference]: Without dead ends: 27 [2018-10-27 05:49:56,372 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:49:56,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-27 05:49:56,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-27 05:49:56,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-27 05:49:56,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-10-27 05:49:56,376 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 36 [2018-10-27 05:49:56,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:49:56,376 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-10-27 05:49:56,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 05:49:56,376 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-10-27 05:49:56,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-27 05:49:56,377 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:49:56,377 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:49:56,378 INFO L424 AbstractCegarLoop]: === Iteration 5 === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:49:56,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:49:56,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1116786735, now seen corresponding path program 1 times [2018-10-27 05:49:56,378 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:49:56,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:49:56,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:49:56,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:49:56,379 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:49:56,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:49:56,459 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-10-27 05:49:56,459 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:49:56,459 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 05:49:56,460 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:49:56,460 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:49:56,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:49:56,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:49:56,461 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 3 states. [2018-10-27 05:49:56,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:49:56,508 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2018-10-27 05:49:56,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:49:56,509 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2018-10-27 05:49:56,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:49:56,510 INFO L225 Difference]: With dead ends: 27 [2018-10-27 05:49:56,510 INFO L226 Difference]: Without dead ends: 0 [2018-10-27 05:49:56,511 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:49:56,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-27 05:49:56,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-27 05:49:56,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-27 05:49:56,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-27 05:49:56,512 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2018-10-27 05:49:56,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:49:56,512 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 05:49:56,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:49:56,512 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-27 05:49:56,512 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-27 05:49:56,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-27 05:49:56,589 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-27 05:49:56,589 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-27 05:49:56,590 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-27 05:49:56,590 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-27 05:49:56,590 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-27 05:49:56,590 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-27 05:49:56,590 INFO L425 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-10-27 05:49:56,590 INFO L425 ceAbstractionStarter]: For program point L14(lines 14 16) no Hoare annotation was computed. [2018-10-27 05:49:56,590 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true [2018-10-27 05:49:56,591 INFO L421 ceAbstractionStarter]: At program point L13(line 13) the Hoare annotation is: (let ((.cse0 (* 2 main_~input~0))) (and (<= .cse0 4294967294) (<= 0 (+ .cse0 4294967296)))) [2018-10-27 05:49:56,591 INFO L425 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2018-10-27 05:49:56,591 INFO L425 ceAbstractionStarter]: For program point L14-2(lines 11 17) no Hoare annotation was computed. [2018-10-27 05:49:56,591 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 11 17) no Hoare annotation was computed. [2018-10-27 05:49:56,591 INFO L425 ceAbstractionStarter]: For program point idFINAL(lines 4 9) no Hoare annotation was computed. [2018-10-27 05:49:56,591 INFO L425 ceAbstractionStarter]: For program point idEXIT(lines 4 9) no Hoare annotation was computed. [2018-10-27 05:49:56,591 INFO L428 ceAbstractionStarter]: At program point idENTRY(lines 4 9) the Hoare annotation is: true [2018-10-27 05:49:56,591 INFO L425 ceAbstractionStarter]: For program point idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 6) no Hoare annotation was computed. [2018-10-27 05:49:56,594 INFO L425 ceAbstractionStarter]: For program point idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 6) no Hoare annotation was computed. [2018-10-27 05:49:56,594 INFO L425 ceAbstractionStarter]: For program point L7(line 7) no Hoare annotation was computed. [2018-10-27 05:49:56,595 INFO L421 ceAbstractionStarter]: At program point L6(line 6) the Hoare annotation is: (let ((.cse0 (* 2 |id_#in~x|))) (or (< (+ .cse0 4294967296) 0) (< 4294967294 .cse0) (let ((.cse1 (* 2 id_~x))) (and (<= 0 (+ .cse1 4294967296)) (not (= id_~x 0)) (<= .cse1 4294967294))))) [2018-10-27 05:49:56,595 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-27 05:49:56,595 INFO L425 ceAbstractionStarter]: For program point L6-1(line 6) no Hoare annotation was computed. [2018-10-27 05:49:56,595 INFO L425 ceAbstractionStarter]: For program point L6-2(line 6) no Hoare annotation was computed. [2018-10-27 05:49:56,595 INFO L425 ceAbstractionStarter]: For program point L6-3(line 6) no Hoare annotation was computed. [2018-10-27 05:49:56,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 05:49:56 BoogieIcfgContainer [2018-10-27 05:49:56,599 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 05:49:56,600 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 05:49:56,600 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 05:49:56,600 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 05:49:56,601 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:49:53" (3/4) ... [2018-10-27 05:49:56,604 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-27 05:49:56,609 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-27 05:49:56,610 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-27 05:49:56,610 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2018-10-27 05:49:56,613 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-10-27 05:49:56,613 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-10-27 05:49:56,613 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-27 05:49:56,654 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_23b39015-e378-4a0f-9953-1cce748ca90d/bin-2019/utaipan/witness.graphml [2018-10-27 05:49:56,654 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 05:49:56,655 INFO L168 Benchmark]: Toolchain (without parser) took 3800.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.4 MB). Free memory was 959.6 MB in the beginning and 1.0 GB in the end (delta: -48.5 MB). Peak memory consumption was 121.9 MB. Max. memory is 11.5 GB. [2018-10-27 05:49:56,656 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 05:49:56,656 INFO L168 Benchmark]: CACSL2BoogieTranslator took 171.55 ms. Allocated memory is still 1.0 GB. Free memory was 959.6 MB in the beginning and 948.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-10-27 05:49:56,657 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.78 ms. Allocated memory is still 1.0 GB. Free memory is still 948.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 05:49:56,657 INFO L168 Benchmark]: Boogie Preprocessor took 21.07 ms. Allocated memory is still 1.0 GB. Free memory is still 948.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 05:49:56,657 INFO L168 Benchmark]: RCFGBuilder took 419.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.4 MB). Free memory was 948.8 MB in the beginning and 1.2 GB in the end (delta: -212.0 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2018-10-27 05:49:56,658 INFO L168 Benchmark]: TraceAbstraction took 3109.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.0 GB in the end (delta: 150.0 MB). Peak memory consumption was 150.0 MB. Max. memory is 11.5 GB. [2018-10-27 05:49:56,658 INFO L168 Benchmark]: Witness Printer took 54.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 05:49:56,661 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 171.55 ms. Allocated memory is still 1.0 GB. Free memory was 959.6 MB in the beginning and 948.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.78 ms. Allocated memory is still 1.0 GB. Free memory is still 948.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.07 ms. Allocated memory is still 1.0 GB. Free memory is still 948.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 419.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.4 MB). Free memory was 948.8 MB in the beginning and 1.2 GB in the end (delta: -212.0 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3109.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.0 GB in the end (delta: 150.0 MB). Peak memory consumption was 150.0 MB. Max. memory is 11.5 GB. * Witness Printer took 54.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 6]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 2 error locations. SAFE Result, 3.0s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 81 SDtfs, 65 SDslu, 179 SDs, 0 SdLazy, 53 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 43 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.8913043478260871 AbsIntWeakeningRatio, 0.5217391304347826 AbsIntAvgWeakeningVarsNumRemoved, 1.3043478260869565 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 50 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 12 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 139 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 134 ConstructedInterpolants, 0 QuantifiedInterpolants, 5308 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 107/111 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...