./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/recursive/recHanoi02_true-unreach-call_true-no-overflow_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_5db6bb7b-bca0-43b2-a0fe-d84a8d974f7f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5db6bb7b-bca0-43b2-a0fe-d84a8d974f7f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5db6bb7b-bca0-43b2-a0fe-d84a8d974f7f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5db6bb7b-bca0-43b2-a0fe-d84a8d974f7f/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/recHanoi02_true-unreach-call_true-no-overflow_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_5db6bb7b-bca0-43b2-a0fe-d84a8d974f7f/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5db6bb7b-bca0-43b2-a0fe-d84a8d974f7f/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 f48e7b9931723f1165b5bb8f3d86571b9aa1aa14 ............................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 13:17:53,953 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 13:17:53,954 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 13:17:53,962 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 13:17:53,962 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 13:17:53,962 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 13:17:53,963 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 13:17:53,964 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 13:17:53,965 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 13:17:53,966 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 13:17:53,966 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 13:17:53,967 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 13:17:53,967 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 13:17:53,968 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 13:17:53,969 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 13:17:53,969 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 13:17:53,970 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 13:17:53,971 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 13:17:53,972 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 13:17:53,973 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 13:17:53,974 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 13:17:53,975 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 13:17:53,976 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 13:17:53,977 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 13:17:53,977 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 13:17:53,977 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 13:17:53,978 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 13:17:53,979 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 13:17:53,979 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 13:17:53,980 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 13:17:53,980 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 13:17:53,981 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 13:17:53,981 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 13:17:53,981 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 13:17:53,982 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 13:17:53,982 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 13:17:53,982 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5db6bb7b-bca0-43b2-a0fe-d84a8d974f7f/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf [2018-11-18 13:17:53,989 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 13:17:53,989 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 13:17:53,990 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 13:17:53,990 INFO L133 SettingsManager]: * Process only entry and re-entry procedures=false [2018-11-18 13:17:53,990 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 13:17:53,990 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 13:17:53,991 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 13:17:53,991 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 13:17:53,991 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 13:17:53,991 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 13:17:53,991 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 13:17:53,991 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 13:17:53,991 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 13:17:53,992 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 13:17:53,992 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 13:17:53,992 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 13:17:53,992 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 13:17:53,992 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 13:17:53,992 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 13:17:53,992 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 13:17:53,993 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 13:17:53,993 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 13:17:53,993 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 13:17:53,993 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:17:53,993 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 13:17:53,993 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 13:17:53,993 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 13:17:53,993 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 13:17:53,994 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 13:17:53,994 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 13:17:53,994 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_5db6bb7b-bca0-43b2-a0fe-d84a8d974f7f/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 -> f48e7b9931723f1165b5bb8f3d86571b9aa1aa14 [2018-11-18 13:17:54,019 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 13:17:54,028 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 13:17:54,030 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 13:17:54,031 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 13:17:54,032 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 13:17:54,032 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5db6bb7b-bca0-43b2-a0fe-d84a8d974f7f/bin-2019/uautomizer/../../sv-benchmarks/c/recursive/recHanoi02_true-unreach-call_true-no-overflow_true-termination.c [2018-11-18 13:17:54,075 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5db6bb7b-bca0-43b2-a0fe-d84a8d974f7f/bin-2019/uautomizer/data/82d2e0d4e/64e1dbed128b4458a2e04a61f7a55554/FLAG74701defe [2018-11-18 13:17:54,478 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 13:17:54,478 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5db6bb7b-bca0-43b2-a0fe-d84a8d974f7f/sv-benchmarks/c/recursive/recHanoi02_true-unreach-call_true-no-overflow_true-termination.c [2018-11-18 13:17:54,482 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5db6bb7b-bca0-43b2-a0fe-d84a8d974f7f/bin-2019/uautomizer/data/82d2e0d4e/64e1dbed128b4458a2e04a61f7a55554/FLAG74701defe [2018-11-18 13:17:54,494 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5db6bb7b-bca0-43b2-a0fe-d84a8d974f7f/bin-2019/uautomizer/data/82d2e0d4e/64e1dbed128b4458a2e04a61f7a55554 [2018-11-18 13:17:54,497 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 13:17:54,498 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 13:17:54,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 13:17:54,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 13:17:54,502 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 13:17:54,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:17:54" (1/1) ... [2018-11-18 13:17:54,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27f427c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:17:54, skipping insertion in model container [2018-11-18 13:17:54,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:17:54" (1/1) ... [2018-11-18 13:17:54,514 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 13:17:54,527 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 13:17:54,627 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:17:54,629 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 13:17:54,637 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:17:54,645 INFO L195 MainTranslator]: Completed translation [2018-11-18 13:17:54,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:17:54 WrapperNode [2018-11-18 13:17:54,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 13:17:54,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 13:17:54,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 13:17:54,646 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 13:17:54,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:17:54" (1/1) ... [2018-11-18 13:17:54,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:17:54" (1/1) ... [2018-11-18 13:17:54,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:17:54" (1/1) ... [2018-11-18 13:17:54,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:17:54" (1/1) ... [2018-11-18 13:17:54,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:17:54" (1/1) ... [2018-11-18 13:17:54,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:17:54" (1/1) ... [2018-11-18 13:17:54,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:17:54" (1/1) ... [2018-11-18 13:17:54,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 13:17:54,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 13:17:54,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 13:17:54,663 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 13:17:54,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:17:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5db6bb7b-bca0-43b2-a0fe-d84a8d974f7f/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 [2018-11-18 13:17:54,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 13:17:54,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 13:17:54,731 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2018-11-18 13:17:54,731 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 13:17:54,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 13:17:54,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 13:17:54,731 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2018-11-18 13:17:54,732 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 13:17:54,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 13:17:54,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 13:17:54,829 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 13:17:54,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:17:54 BoogieIcfgContainer [2018-11-18 13:17:54,829 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 13:17:54,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 13:17:54,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 13:17:54,832 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 13:17:54,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:17:54" (1/3) ... [2018-11-18 13:17:54,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18768a3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:17:54, skipping insertion in model container [2018-11-18 13:17:54,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:17:54" (2/3) ... [2018-11-18 13:17:54,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18768a3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:17:54, skipping insertion in model container [2018-11-18 13:17:54,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:17:54" (3/3) ... [2018-11-18 13:17:54,834 INFO L112 eAbstractionObserver]: Analyzing ICFG recHanoi02_true-unreach-call_true-no-overflow_true-termination.c [2018-11-18 13:17:54,840 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 13:17:54,846 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 13:17:54,855 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 13:17:54,878 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 13:17:54,879 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 13:17:54,879 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 13:17:54,879 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 13:17:54,879 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 13:17:54,879 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 13:17:54,880 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 13:17:54,880 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 13:17:54,880 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 13:17:54,895 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-11-18 13:17:54,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-18 13:17:54,900 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:17:54,900 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:17:54,902 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:17:54,907 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:17:54,907 INFO L82 PathProgramCache]: Analyzing trace with hash 913793727, now seen corresponding path program 1 times [2018-11-18 13:17:54,909 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:17:54,909 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:17:54,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:17:54,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:17:54,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:17:54,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:17:55,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:17:55,035 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:17:55,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 13:17:55,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 13:17:55,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 13:17:55,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 13:17:55,051 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 5 states. [2018-11-18 13:17:55,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:17:55,082 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-11-18 13:17:55,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 13:17:55,083 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-11-18 13:17:55,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:17:55,089 INFO L225 Difference]: With dead ends: 33 [2018-11-18 13:17:55,090 INFO L226 Difference]: Without dead ends: 19 [2018-11-18 13:17:55,092 INFO L604 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 [2018-11-18 13:17:55,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-18 13:17:55,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-18 13:17:55,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-18 13:17:55,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-11-18 13:17:55,116 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2018-11-18 13:17:55,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:17:55,116 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-11-18 13:17:55,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 13:17:55,116 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-11-18 13:17:55,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 13:17:55,117 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:17:55,118 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:17:55,118 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:17:55,118 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:17:55,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1998834103, now seen corresponding path program 1 times [2018-11-18 13:17:55,118 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:17:55,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:17:55,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:17:55,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:17:55,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:17:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:17:55,186 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 13:17:55,187 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:17:55,187 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 13:17:55,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 13:17:55,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 13:17:55,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-18 13:17:55,189 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 7 states. [2018-11-18 13:17:55,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:17:55,205 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2018-11-18 13:17:55,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 13:17:55,205 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2018-11-18 13:17:55,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:17:55,206 INFO L225 Difference]: With dead ends: 19 [2018-11-18 13:17:55,206 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 13:17:55,207 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-18 13:17:55,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 13:17:55,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 13:17:55,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 13:17:55,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 13:17:55,208 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2018-11-18 13:17:55,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:17:55,208 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 13:17:55,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 13:17:55,208 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 13:17:55,208 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 13:17:55,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 13:17:55,224 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 13:17:55,224 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 13:17:55,224 INFO L425 ceAbstractionStarter]: For program point hanoiEXIT(lines 18 23) no Hoare annotation was computed. [2018-11-18 13:17:55,224 INFO L428 ceAbstractionStarter]: At program point hanoiENTRY(lines 18 23) the Hoare annotation is: true [2018-11-18 13:17:55,224 INFO L425 ceAbstractionStarter]: For program point hanoiFINAL(lines 18 23) no Hoare annotation was computed. [2018-11-18 13:17:55,224 INFO L428 ceAbstractionStarter]: At program point L22(line 22) the Hoare annotation is: true [2018-11-18 13:17:55,224 INFO L425 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2018-11-18 13:17:55,224 INFO L425 ceAbstractionStarter]: For program point L19(lines 19 21) no Hoare annotation was computed. [2018-11-18 13:17:55,224 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 13:17:55,225 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 13:17:55,225 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 13:17:55,225 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 13:17:55,225 INFO L425 ceAbstractionStarter]: For program point L32(lines 32 36) no Hoare annotation was computed. [2018-11-18 13:17:55,225 INFO L428 ceAbstractionStarter]: At program point L31(line 31) the Hoare annotation is: true [2018-11-18 13:17:55,225 INFO L425 ceAbstractionStarter]: For program point L31-1(line 31) no Hoare annotation was computed. [2018-11-18 13:17:55,225 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 26 37) the Hoare annotation is: true [2018-11-18 13:17:55,225 INFO L425 ceAbstractionStarter]: For program point L28(lines 28 30) no Hoare annotation was computed. [2018-11-18 13:17:55,225 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 26 37) no Hoare annotation was computed. [2018-11-18 13:17:55,226 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 35) no Hoare annotation was computed. [2018-11-18 13:17:55,226 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 26 37) no Hoare annotation was computed. [2018-11-18 13:17:55,226 INFO L425 ceAbstractionStarter]: For program point L35(line 35) no Hoare annotation was computed. [2018-11-18 13:17:55,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 01:17:55 BoogieIcfgContainer [2018-11-18 13:17:55,228 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 13:17:55,229 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 13:17:55,229 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 13:17:55,229 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 13:17:55,230 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:17:54" (3/4) ... [2018-11-18 13:17:55,233 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 13:17:55,237 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 13:17:55,237 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure hanoi [2018-11-18 13:17:55,238 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 13:17:55,241 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-18 13:17:55,242 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-18 13:17:55,242 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 13:17:55,269 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_5db6bb7b-bca0-43b2-a0fe-d84a8d974f7f/bin-2019/uautomizer/witness.graphml [2018-11-18 13:17:55,269 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 13:17:55,270 INFO L168 Benchmark]: Toolchain (without parser) took 772.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 960.3 MB in the beginning and 1.1 GB in the end (delta: -121.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-11-18 13:17:55,271 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:17:55,271 INFO L168 Benchmark]: CACSL2BoogieTranslator took 147.11 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 13:17:55,271 INFO L168 Benchmark]: Boogie Preprocessor took 16.52 ms. Allocated memory is still 1.0 GB. Free memory was 949.6 MB in the beginning and 946.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 13:17:55,272 INFO L168 Benchmark]: RCFGBuilder took 166.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -176.9 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. [2018-11-18 13:17:55,272 INFO L168 Benchmark]: TraceAbstraction took 398.89 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: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 11.5 GB. [2018-11-18 13:17:55,272 INFO L168 Benchmark]: Witness Printer took 40.59 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. [2018-11-18 13:17:55,274 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 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 147.11 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 16.52 ms. Allocated memory is still 1.0 GB. Free memory was 949.6 MB in the beginning and 946.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 166.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -176.9 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 398.89 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: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 11.5 GB. * Witness Printer took 40.59 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: 35]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. SAFE Result, 0.3s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 39 SDtfs, 2 SDslu, 124 SDs, 0 SdLazy, 19 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 7 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 900 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...