./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/recursive-simple/afterrec_2calls_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_08cf13fa-1093-40fd-8243-9d10017af948/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_08cf13fa-1093-40fd-8243-9d10017af948/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_08cf13fa-1093-40fd-8243-9d10017af948/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_08cf13fa-1093-40fd-8243-9d10017af948/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/afterrec_2calls_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_08cf13fa-1093-40fd-8243-9d10017af948/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_08cf13fa-1093-40fd-8243-9d10017af948/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 c6374d8695c81504f4ccfc7ac3dabef115b6d49d .................................................................................................................................................................................................................................................................................... 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 23:17:17,937 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:17:17,939 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:17:17,952 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:17:17,953 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:17:17,953 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:17:17,954 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:17:17,955 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:17:17,957 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:17:17,957 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:17:17,962 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:17:17,963 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:17:17,963 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:17:17,966 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:17:17,974 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:17:17,975 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:17:17,976 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:17:17,977 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:17:17,978 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:17:17,980 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:17:17,980 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:17:17,981 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:17:17,983 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 23:17:17,983 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 23:17:17,984 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 23:17:17,984 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 23:17:17,985 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 23:17:17,987 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 23:17:17,988 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 23:17:17,989 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 23:17:17,989 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 23:17:17,989 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 23:17:17,990 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 23:17:17,990 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 23:17:17,990 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 23:17:17,991 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 23:17:17,991 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_08cf13fa-1093-40fd-8243-9d10017af948/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-10-26 23:17:18,007 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:17:18,007 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:17:18,008 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:17:18,008 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 23:17:18,008 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 23:17:18,008 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 23:17:18,009 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 23:17:18,009 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:17:18,009 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 23:17:18,009 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 23:17:18,009 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 23:17:18,009 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:17:18,010 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:17:18,011 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:17:18,011 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:17:18,011 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 23:17:18,011 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:17:18,011 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:17:18,011 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:17:18,011 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 23:17:18,012 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:17:18,012 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 23:17:18,012 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:17:18,012 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:17:18,012 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:17:18,012 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:17:18,013 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 23:17:18,013 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:17:18,013 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 23:17:18,013 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_08cf13fa-1093-40fd-8243-9d10017af948/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 -> c6374d8695c81504f4ccfc7ac3dabef115b6d49d [2018-10-26 23:17:18,048 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:17:18,060 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:17:18,063 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:17:18,064 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:17:18,064 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:17:18,064 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_08cf13fa-1093-40fd-8243-9d10017af948/bin-2019/uautomizer/../../sv-benchmarks/c/recursive-simple/afterrec_2calls_true-unreach-call_true-termination.c [2018-10-26 23:17:18,121 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_08cf13fa-1093-40fd-8243-9d10017af948/bin-2019/uautomizer/data/086f92f12/d545dd03c09b460da0c7df228da2b35c/FLAG0193f2103 [2018-10-26 23:17:18,496 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:17:18,496 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_08cf13fa-1093-40fd-8243-9d10017af948/sv-benchmarks/c/recursive-simple/afterrec_2calls_true-unreach-call_true-termination.c [2018-10-26 23:17:18,500 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_08cf13fa-1093-40fd-8243-9d10017af948/bin-2019/uautomizer/data/086f92f12/d545dd03c09b460da0c7df228da2b35c/FLAG0193f2103 [2018-10-26 23:17:18,513 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_08cf13fa-1093-40fd-8243-9d10017af948/bin-2019/uautomizer/data/086f92f12/d545dd03c09b460da0c7df228da2b35c [2018-10-26 23:17:18,516 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:17:18,517 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 23:17:18,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:17:18,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:17:18,521 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:17:18,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:17:18" (1/1) ... [2018-10-26 23:17:18,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eedc97b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:17:18, skipping insertion in model container [2018-10-26 23:17:18,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:17:18" (1/1) ... [2018-10-26 23:17:18,533 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:17:18,549 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:17:18,651 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:17:18,653 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:17:18,665 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:17:18,675 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:17:18,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:17:18 WrapperNode [2018-10-26 23:17:18,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:17:18,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:17:18,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:17:18,676 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:17:18,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:17:18" (1/1) ... [2018-10-26 23:17:18,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:17:18" (1/1) ... [2018-10-26 23:17:18,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:17:18" (1/1) ... [2018-10-26 23:17:18,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:17:18" (1/1) ... [2018-10-26 23:17:18,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:17:18" (1/1) ... [2018-10-26 23:17:18,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:17:18" (1/1) ... [2018-10-26 23:17:18,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:17:18" (1/1) ... [2018-10-26 23:17:18,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:17:18,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:17:18,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:17:18,699 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:17:18,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:17:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08cf13fa-1093-40fd-8243-9d10017af948/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 23:17:18,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 23:17:18,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:17:18,758 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2018-10-26 23:17:18,758 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2018-10-26 23:17:18,758 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 23:17:18,758 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-26 23:17:18,759 INFO L130 BoogieDeclarations]: Found specification of procedure f [2018-10-26 23:17:18,759 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2018-10-26 23:17:18,759 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 23:17:18,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 23:17:18,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:17:19,032 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:17:19,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:17:19 BoogieIcfgContainer [2018-10-26 23:17:19,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:17:19,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 23:17:19,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 23:17:19,037 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 23:17:19,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:17:18" (1/3) ... [2018-10-26 23:17:19,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49bd29cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:17:19, skipping insertion in model container [2018-10-26 23:17:19,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:17:18" (2/3) ... [2018-10-26 23:17:19,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49bd29cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:17:19, skipping insertion in model container [2018-10-26 23:17:19,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:17:19" (3/3) ... [2018-10-26 23:17:19,040 INFO L112 eAbstractionObserver]: Analyzing ICFG afterrec_2calls_true-unreach-call_true-termination.c [2018-10-26 23:17:19,048 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 23:17:19,055 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-10-26 23:17:19,069 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-10-26 23:17:19,096 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 23:17:19,097 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 23:17:19,097 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 23:17:19,097 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 23:17:19,097 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 23:17:19,097 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 23:17:19,097 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 23:17:19,097 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 23:17:19,097 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 23:17:19,113 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-10-26 23:17:19,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-26 23:17:19,119 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:17:19,119 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:17:19,122 INFO L424 AbstractCegarLoop]: === Iteration 1 === [fErr0ASSERT_VIOLATIONERROR_FUNCTION, f2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:17:19,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:17:19,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1662209305, now seen corresponding path program 1 times [2018-10-26 23:17:19,128 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:17:19,129 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:17:19,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:17:19,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:17:19,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:17:19,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:17:19,406 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 23:17:19,407 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:17:19,408 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 23:17:19,411 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 23:17:19,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 23:17:19,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:17:19,426 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 4 states. [2018-10-26 23:17:19,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:17:19,508 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2018-10-26 23:17:19,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 23:17:19,510 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-10-26 23:17:19,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:17:19,516 INFO L225 Difference]: With dead ends: 31 [2018-10-26 23:17:19,516 INFO L226 Difference]: Without dead ends: 0 [2018-10-26 23:17:19,519 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:17:19,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-26 23:17:19,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-26 23:17:19,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-26 23:17:19,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-26 23:17:19,542 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-10-26 23:17:19,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:17:19,543 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-26 23:17:19,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 23:17:19,543 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-26 23:17:19,543 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-26 23:17:19,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-26 23:17:19,606 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-26 23:17:19,606 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-26 23:17:19,607 INFO L425 ceAbstractionStarter]: For program point fErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2018-10-26 23:17:19,607 INFO L421 ceAbstractionStarter]: At program point L9(line 9) the Hoare annotation is: (< 2 |f_#in~n|) [2018-10-26 23:17:19,607 INFO L425 ceAbstractionStarter]: For program point L9-1(lines 6 11) no Hoare annotation was computed. [2018-10-26 23:17:19,607 INFO L425 ceAbstractionStarter]: For program point fEXIT(lines 6 11) no Hoare annotation was computed. [2018-10-26 23:17:19,607 INFO L425 ceAbstractionStarter]: For program point L7(line 7) no Hoare annotation was computed. [2018-10-26 23:17:19,608 INFO L428 ceAbstractionStarter]: At program point fENTRY(lines 6 11) the Hoare annotation is: true [2018-10-26 23:17:19,608 INFO L425 ceAbstractionStarter]: For program point fFINAL(lines 6 11) no Hoare annotation was computed. [2018-10-26 23:17:19,608 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-26 23:17:19,608 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-26 23:17:19,608 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-26 23:17:19,608 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-26 23:17:19,608 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 20 22) the Hoare annotation is: true [2018-10-26 23:17:19,608 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 20 22) no Hoare annotation was computed. [2018-10-26 23:17:19,609 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 20 22) no Hoare annotation was computed. [2018-10-26 23:17:19,609 INFO L428 ceAbstractionStarter]: At program point L16(line 16) the Hoare annotation is: true [2018-10-26 23:17:19,609 INFO L425 ceAbstractionStarter]: For program point f2EXIT(lines 13 18) no Hoare annotation was computed. [2018-10-26 23:17:19,609 INFO L425 ceAbstractionStarter]: For program point L16-1(lines 13 18) no Hoare annotation was computed. [2018-10-26 23:17:19,609 INFO L425 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-10-26 23:17:19,609 INFO L428 ceAbstractionStarter]: At program point f2ENTRY(lines 13 18) the Hoare annotation is: true [2018-10-26 23:17:19,609 INFO L425 ceAbstractionStarter]: For program point f2FINAL(lines 13 18) no Hoare annotation was computed. [2018-10-26 23:17:19,609 INFO L425 ceAbstractionStarter]: For program point f2Err0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2018-10-26 23:17:19,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 11:17:19 BoogieIcfgContainer [2018-10-26 23:17:19,612 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 23:17:19,613 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 23:17:19,613 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 23:17:19,613 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 23:17:19,616 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:17:19" (3/4) ... [2018-10-26 23:17:19,620 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-26 23:17:19,626 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-26 23:17:19,627 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2018-10-26 23:17:19,627 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-26 23:17:19,627 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure f2 [2018-10-26 23:17:19,630 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-10-26 23:17:19,630 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-10-26 23:17:19,630 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-26 23:17:19,661 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_08cf13fa-1093-40fd-8243-9d10017af948/bin-2019/uautomizer/witness.graphml [2018-10-26 23:17:19,661 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 23:17:19,662 INFO L168 Benchmark]: Toolchain (without parser) took 1146.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.9 MB). Free memory was 960.7 MB in the beginning and 1.1 GB in the end (delta: -171.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 23:17:19,663 INFO L168 Benchmark]: CDTParser took 0.11 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. [2018-10-26 23:17:19,664 INFO L168 Benchmark]: CACSL2BoogieTranslator took 158.19 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 950.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 23:17:19,664 INFO L168 Benchmark]: Boogie Preprocessor took 22.79 ms. Allocated memory is still 1.0 GB. Free memory is still 950.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 23:17:19,664 INFO L168 Benchmark]: RCFGBuilder took 333.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.9 MB). Free memory was 950.0 MB in the beginning and 1.2 GB in the end (delta: -214.0 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2018-10-26 23:17:19,665 INFO L168 Benchmark]: TraceAbstraction took 578.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 11.5 GB. [2018-10-26 23:17:19,665 INFO L168 Benchmark]: Witness Printer took 48.76 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-26 23:17:19,668 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 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 158.19 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 950.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.79 ms. Allocated memory is still 1.0 GB. Free memory is still 950.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 333.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.9 MB). Free memory was 950.0 MB in the beginning and 1.2 GB in the end (delta: -214.0 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 578.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 11.5 GB. * Witness Printer took 48.76 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 2 error locations. SAFE Result, 0.5s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9 SDtfs, 5 SDslu, 15 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 10 PreInvPairs, 10 NumberOfFragments, 11 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 192 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...