./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loops/count_up_down_true-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_daa5a7b7-3387-4259-b294-0082e5f2bd13/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_daa5a7b7-3387-4259-b294-0082e5f2bd13/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_daa5a7b7-3387-4259-b294-0082e5f2bd13/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_daa5a7b7-3387-4259-b294-0082e5f2bd13/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/count_up_down_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_daa5a7b7-3387-4259-b294-0082e5f2bd13/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_daa5a7b7-3387-4259-b294-0082e5f2bd13/bin-2019/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b37ffbbc4572f61f8e88c551dd4e5228bb86f8a0 ............................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 22:46:29,931 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:46:29,933 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:46:29,942 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:46:29,942 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:46:29,943 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:46:29,944 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:46:29,945 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:46:29,947 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:46:29,948 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:46:29,949 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:46:29,949 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:46:29,950 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:46:29,950 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:46:29,952 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:46:29,952 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:46:29,953 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:46:29,954 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:46:29,956 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:46:29,957 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:46:29,958 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:46:29,959 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:46:29,961 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 22:46:29,962 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 22:46:29,962 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 22:46:29,962 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 22:46:29,964 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 22:46:29,964 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 22:46:29,965 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 22:46:29,966 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 22:46:29,966 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 22:46:29,967 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 22:46:29,967 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 22:46:29,967 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 22:46:29,968 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 22:46:29,969 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 22:46:29,969 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_daa5a7b7-3387-4259-b294-0082e5f2bd13/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-10-26 22:46:29,980 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:46:29,980 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:46:29,981 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:46:29,981 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 22:46:29,981 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 22:46:29,981 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 22:46:29,982 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 22:46:29,982 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:46:29,982 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 22:46:29,982 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 22:46:29,982 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 22:46:29,982 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:46:29,982 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:46:29,983 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:46:29,983 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:46:29,984 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 22:46:29,984 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:46:29,984 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:46:29,985 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:46:29,985 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:46:29,985 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:46:29,985 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:46:29,985 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:46:29,985 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:46:29,985 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:46:29,986 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:46:29,986 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 22:46:29,986 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:46:29,986 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 22:46:29,986 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_daa5a7b7-3387-4259-b294-0082e5f2bd13/bin-2019/uautomizer 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 -> Automizer 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 -> b37ffbbc4572f61f8e88c551dd4e5228bb86f8a0 [2018-10-26 22:46:30,013 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:46:30,023 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:46:30,026 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:46:30,027 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:46:30,028 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:46:30,028 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_daa5a7b7-3387-4259-b294-0082e5f2bd13/bin-2019/uautomizer/../../sv-benchmarks/c/loops/count_up_down_true-unreach-call_true-termination.i [2018-10-26 22:46:30,074 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_daa5a7b7-3387-4259-b294-0082e5f2bd13/bin-2019/uautomizer/data/080bdb156/72abe4e2334a4d9b8513c497dd1a3a1b/FLAG3d7100220 [2018-10-26 22:46:30,443 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:46:30,444 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_daa5a7b7-3387-4259-b294-0082e5f2bd13/sv-benchmarks/c/loops/count_up_down_true-unreach-call_true-termination.i [2018-10-26 22:46:30,449 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_daa5a7b7-3387-4259-b294-0082e5f2bd13/bin-2019/uautomizer/data/080bdb156/72abe4e2334a4d9b8513c497dd1a3a1b/FLAG3d7100220 [2018-10-26 22:46:30,461 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_daa5a7b7-3387-4259-b294-0082e5f2bd13/bin-2019/uautomizer/data/080bdb156/72abe4e2334a4d9b8513c497dd1a3a1b [2018-10-26 22:46:30,464 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:46:30,465 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 22:46:30,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:46:30,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:46:30,469 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:46:30,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:46:30" (1/1) ... [2018-10-26 22:46:30,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e7bd481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:46:30, skipping insertion in model container [2018-10-26 22:46:30,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:46:30" (1/1) ... [2018-10-26 22:46:30,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:46:30,497 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:46:30,605 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:46:30,607 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:46:30,619 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:46:30,629 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:46:30,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:46:30 WrapperNode [2018-10-26 22:46:30,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:46:30,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:46:30,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:46:30,630 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:46:30,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:46:30" (1/1) ... [2018-10-26 22:46:30,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:46:30" (1/1) ... [2018-10-26 22:46:30,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:46:30" (1/1) ... [2018-10-26 22:46:30,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:46:30" (1/1) ... [2018-10-26 22:46:30,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:46:30" (1/1) ... [2018-10-26 22:46:30,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:46:30" (1/1) ... [2018-10-26 22:46:30,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:46:30" (1/1) ... [2018-10-26 22:46:30,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:46:30,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:46:30,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:46:30,656 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:46:30,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:46:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_daa5a7b7-3387-4259-b294-0082e5f2bd13/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:46:30,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 22:46:30,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:46:30,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-26 22:46:30,714 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 22:46:30,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-26 22:46:30,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 22:46:30,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2018-10-26 22:46:30,714 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 22:46:30,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 22:46:30,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:46:30,998 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:46:30,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:46:30 BoogieIcfgContainer [2018-10-26 22:46:30,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:46:31,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:46:31,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:46:31,003 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:46:31,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:46:30" (1/3) ... [2018-10-26 22:46:31,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@224b7e8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:46:31, skipping insertion in model container [2018-10-26 22:46:31,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:46:30" (2/3) ... [2018-10-26 22:46:31,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@224b7e8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:46:31, skipping insertion in model container [2018-10-26 22:46:31,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:46:30" (3/3) ... [2018-10-26 22:46:31,006 INFO L112 eAbstractionObserver]: Analyzing ICFG count_up_down_true-unreach-call_true-termination.i [2018-10-26 22:46:31,016 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:46:31,023 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:46:31,040 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:46:31,071 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 22:46:31,071 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:46:31,072 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:46:31,072 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:46:31,072 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:46:31,072 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:46:31,072 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:46:31,072 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:46:31,072 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:46:31,090 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-10-26 22:46:31,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-26 22:46:31,100 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:46:31,101 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:46:31,103 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:46:31,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:46:31,109 INFO L82 PathProgramCache]: Analyzing trace with hash -10373566, now seen corresponding path program 1 times [2018-10-26 22:46:31,111 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:46:31,111 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:46:31,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:46:31,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:46:31,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:46:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:46:31,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:46:31,227 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:46:31,228 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 22:46:31,231 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 22:46:31,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 22:46:31,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:46:31,245 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2018-10-26 22:46:31,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:46:31,269 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2018-10-26 22:46:31,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 22:46:31,271 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-10-26 22:46:31,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:46:31,281 INFO L225 Difference]: With dead ends: 29 [2018-10-26 22:46:31,282 INFO L226 Difference]: Without dead ends: 12 [2018-10-26 22:46:31,284 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:46:31,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-26 22:46:31,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-26 22:46:31,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-26 22:46:31,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-26 22:46:31,319 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-26 22:46:31,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:46:31,320 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-26 22:46:31,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 22:46:31,320 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-26 22:46:31,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-26 22:46:31,321 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:46:31,322 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:46:31,322 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:46:31,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:46:31,323 INFO L82 PathProgramCache]: Analyzing trace with hash -571410792, now seen corresponding path program 1 times [2018-10-26 22:46:31,323 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:46:31,323 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:46:31,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:46:31,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:46:31,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:46:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:46:31,497 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-26 22:46:31,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:46:31,579 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:46:31,579 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 22:46:31,581 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 22:46:31,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 22:46:31,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-26 22:46:31,581 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 6 states. [2018-10-26 22:46:31,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:46:31,712 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-26 22:46:31,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 22:46:31,712 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2018-10-26 22:46:31,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:46:31,713 INFO L225 Difference]: With dead ends: 19 [2018-10-26 22:46:31,713 INFO L226 Difference]: Without dead ends: 14 [2018-10-26 22:46:31,714 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-26 22:46:31,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-26 22:46:31,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-26 22:46:31,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-26 22:46:31,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-26 22:46:31,717 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-10-26 22:46:31,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:46:31,717 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-26 22:46:31,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 22:46:31,717 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-26 22:46:31,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-26 22:46:31,718 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:46:31,718 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:46:31,718 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:46:31,718 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:46:31,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1625028318, now seen corresponding path program 1 times [2018-10-26 22:46:31,719 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:46:31,719 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:46:31,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:46:31,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:46:31,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:46:31,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:46:32,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:46:32,062 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:46:32,062 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_daa5a7b7-3387-4259-b294-0082e5f2bd13/bin-2019/uautomizer/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 [2018-10-26 22:46:32,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:46:32,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:46:32,085 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:46:32,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:46:32,244 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:46:32,244 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-10-26 22:46:32,244 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-26 22:46:32,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-26 22:46:32,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-10-26 22:46:32,245 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 9 states. [2018-10-26 22:46:32,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:46:32,480 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2018-10-26 22:46:32,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 22:46:32,481 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2018-10-26 22:46:32,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:46:32,481 INFO L225 Difference]: With dead ends: 17 [2018-10-26 22:46:32,481 INFO L226 Difference]: Without dead ends: 0 [2018-10-26 22:46:32,485 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-10-26 22:46:32,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-26 22:46:32,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-26 22:46:32,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-26 22:46:32,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-26 22:46:32,486 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-10-26 22:46:32,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:46:32,486 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-26 22:46:32,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-26 22:46:32,487 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-26 22:46:32,487 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-26 22:46:32,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-26 22:46:34,634 WARN L179 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 32 DAG size of output: 25 [2018-10-26 22:46:34,710 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-26 22:46:34,710 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-26 22:46:34,710 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-26 22:46:34,711 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-26 22:46:34,711 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-26 22:46:34,711 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-26 22:46:34,711 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 11 21) the Hoare annotation is: true [2018-10-26 22:46:34,711 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 11 21) no Hoare annotation was computed. [2018-10-26 22:46:34,711 INFO L425 ceAbstractionStarter]: For program point L15-1(lines 15 19) no Hoare annotation was computed. [2018-10-26 22:46:34,711 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 11 21) no Hoare annotation was computed. [2018-10-26 22:46:34,712 INFO L421 ceAbstractionStarter]: At program point L15-3(lines 15 19) the Hoare annotation is: (or (and (<= 0 main_~y~0) (= main_~x~0 main_~n~0) (<= main_~y~0 0)) (let ((.cse0 (+ main_~x~0 main_~y~0))) (and (<= main_~n~0 .cse0) (<= 1 main_~y~0) (<= main_~n~0 (+ (* 4294967296 (div (+ main_~n~0 (- main_~y~0)) 4294967296)) 4294967295)) (<= .cse0 main_~n~0)))) [2018-10-26 22:46:34,712 INFO L421 ceAbstractionStarter]: At program point L15-4(lines 15 19) the Hoare annotation is: (let ((.cse2 (* 4294967296 (div (+ main_~n~0 (- main_~y~0)) 4294967296)))) (let ((.cse0 (<= main_~n~0 (+ .cse2 main_~y~0)))) (or (and (<= 0 main_~y~0) .cse0 (= main_~x~0 main_~n~0) (<= main_~y~0 0)) (let ((.cse1 (+ main_~x~0 main_~y~0))) (and (<= main_~n~0 .cse1) (<= 1 main_~y~0) (<= main_~n~0 (+ .cse2 4294967295)) .cse0 (<= .cse1 main_~n~0)))))) [2018-10-26 22:46:34,712 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-26 22:46:34,712 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-26 22:46:34,712 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-26 22:46:34,712 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-26 22:46:34,712 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-26 22:46:34,713 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-26 22:46:34,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:46:34 BoogieIcfgContainer [2018-10-26 22:46:34,724 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:46:34,724 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 22:46:34,724 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 22:46:34,724 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 22:46:34,725 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:46:30" (3/4) ... [2018-10-26 22:46:34,728 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-26 22:46:34,733 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-26 22:46:34,734 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-26 22:46:34,734 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-10-26 22:46:34,737 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2018-10-26 22:46:34,737 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-10-26 22:46:34,737 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-26 22:46:34,770 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_daa5a7b7-3387-4259-b294-0082e5f2bd13/bin-2019/uautomizer/witness.graphml [2018-10-26 22:46:34,770 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 22:46:34,771 INFO L168 Benchmark]: Toolchain (without parser) took 4307.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 960.3 MB in the beginning and 1.1 GB in the end (delta: -94.4 MB). Peak memory consumption was 56.6 MB. Max. memory is 11.5 GB. [2018-10-26 22:46:34,772 INFO L168 Benchmark]: CDTParser took 0.15 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. [2018-10-26 22:46:34,773 INFO L168 Benchmark]: CACSL2BoogieTranslator took 164.50 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. [2018-10-26 22:46:34,773 INFO L168 Benchmark]: Boogie Preprocessor took 25.50 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. [2018-10-26 22:46:34,773 INFO L168 Benchmark]: RCFGBuilder took 342.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -194.4 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2018-10-26 22:46:34,774 INFO L168 Benchmark]: TraceAbstraction took 3723.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 84.0 MB). Peak memory consumption was 84.0 MB. Max. memory is 11.5 GB. [2018-10-26 22:46:34,775 INFO L168 Benchmark]: Witness Printer took 46.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 22:46:34,777 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 164.50 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 Preprocessor took 25.50 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. * RCFGBuilder took 342.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -194.4 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3723.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 84.0 MB). Peak memory consumption was 84.0 MB. Max. memory is 11.5 GB. * Witness Printer took 46.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 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: 5]: 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 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: ((0 <= y && x == n) && y <= 0) || (((n <= x + y && 1 <= y) && n <= 4294967296 * ((n + -y) / 4294967296) + 4294967295) && x + y <= n) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. SAFE Result, 3.6s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 2.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 35 SDtfs, 6 SDslu, 75 SDs, 0 SdLazy, 44 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 15 NumberOfFragments, 103 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 36 FormulaSimplificationTreeSizeReductionInter, 2.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 2861 SizeOfPredicates, 3 NumberOfNonLiveVariables, 33 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...