./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/sum01_true-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_1f67b3bb-5319-4a07-9ade-01ca880572c7/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1f67b3bb-5319-4a07-9ade-01ca880572c7/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1f67b3bb-5319-4a07-9ade-01ca880572c7/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1f67b3bb-5319-4a07-9ade-01ca880572c7/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/sum01_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_1f67b3bb-5319-4a07-9ade-01ca880572c7/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1f67b3bb-5319-4a07-9ade-01ca880572c7/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 3ef497a13bffaa6a3ec01f2d87f935fee9ff2c5a ................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-01 20:04:49,820 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 20:04:49,821 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 20:04:49,827 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 20:04:49,828 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 20:04:49,828 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 20:04:49,829 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 20:04:49,830 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 20:04:49,831 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 20:04:49,832 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 20:04:49,832 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 20:04:49,832 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 20:04:49,833 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 20:04:49,834 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 20:04:49,835 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 20:04:49,835 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 20:04:49,836 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 20:04:49,837 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 20:04:49,838 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 20:04:49,839 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 20:04:49,840 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 20:04:49,841 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 20:04:49,842 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 20:04:49,842 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 20:04:49,843 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 20:04:49,843 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 20:04:49,844 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 20:04:49,844 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 20:04:49,845 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 20:04:49,845 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 20:04:49,846 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 20:04:49,846 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 20:04:49,846 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 20:04:49,846 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 20:04:49,847 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 20:04:49,848 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 20:04:49,848 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1f67b3bb-5319-4a07-9ade-01ca880572c7/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-01 20:04:49,855 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 20:04:49,855 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 20:04:49,856 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 20:04:49,856 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-01 20:04:49,857 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 20:04:49,857 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 20:04:49,857 INFO L133 SettingsManager]: * Use SBE=true [2018-12-01 20:04:49,857 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 20:04:49,857 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 20:04:49,858 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 20:04:49,858 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 20:04:49,858 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 20:04:49,858 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-01 20:04:49,858 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 20:04:49,858 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-01 20:04:49,858 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 20:04:49,859 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 20:04:49,859 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 20:04:49,859 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-01 20:04:49,859 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 20:04:49,859 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 20:04:49,859 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 20:04:49,860 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-01 20:04:49,860 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 20:04:49,860 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 20:04:49,860 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 20:04:49,860 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-01 20:04:49,860 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-01 20:04:49,861 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 20:04:49,861 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-01 20:04:49,861 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_1f67b3bb-5319-4a07-9ade-01ca880572c7/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 -> 3ef497a13bffaa6a3ec01f2d87f935fee9ff2c5a [2018-12-01 20:04:49,884 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 20:04:49,891 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 20:04:49,894 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 20:04:49,895 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 20:04:49,895 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 20:04:49,895 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1f67b3bb-5319-4a07-9ade-01ca880572c7/bin-2019/uautomizer/../../sv-benchmarks/c/loops/sum01_true-unreach-call_true-termination.i [2018-12-01 20:04:49,932 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1f67b3bb-5319-4a07-9ade-01ca880572c7/bin-2019/uautomizer/data/8aaa43723/f306d1af29e74cb2bffce9561aa878d6/FLAG85faa890d [2018-12-01 20:04:50,210 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 20:04:50,210 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1f67b3bb-5319-4a07-9ade-01ca880572c7/sv-benchmarks/c/loops/sum01_true-unreach-call_true-termination.i [2018-12-01 20:04:50,214 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1f67b3bb-5319-4a07-9ade-01ca880572c7/bin-2019/uautomizer/data/8aaa43723/f306d1af29e74cb2bffce9561aa878d6/FLAG85faa890d [2018-12-01 20:04:50,222 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1f67b3bb-5319-4a07-9ade-01ca880572c7/bin-2019/uautomizer/data/8aaa43723/f306d1af29e74cb2bffce9561aa878d6 [2018-12-01 20:04:50,224 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 20:04:50,225 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 20:04:50,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 20:04:50,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 20:04:50,228 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 20:04:50,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 08:04:50" (1/1) ... [2018-12-01 20:04:50,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fd2551a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:04:50, skipping insertion in model container [2018-12-01 20:04:50,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 08:04:50" (1/1) ... [2018-12-01 20:04:50,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 20:04:50,243 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 20:04:50,327 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 20:04:50,329 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 20:04:50,338 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 20:04:50,346 INFO L195 MainTranslator]: Completed translation [2018-12-01 20:04:50,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:04:50 WrapperNode [2018-12-01 20:04:50,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 20:04:50,347 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 20:04:50,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 20:04:50,347 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 20:04:50,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:04:50" (1/1) ... [2018-12-01 20:04:50,354 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:04:50" (1/1) ... [2018-12-01 20:04:50,358 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 20:04:50,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 20:04:50,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 20:04:50,358 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 20:04:50,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:04:50" (1/1) ... [2018-12-01 20:04:50,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:04:50" (1/1) ... [2018-12-01 20:04:50,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:04:50" (1/1) ... [2018-12-01 20:04:50,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:04:50" (1/1) ... [2018-12-01 20:04:50,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:04:50" (1/1) ... [2018-12-01 20:04:50,368 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:04:50" (1/1) ... [2018-12-01 20:04:50,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:04:50" (1/1) ... [2018-12-01 20:04:50,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 20:04:50,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 20:04:50,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 20:04:50,370 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 20:04:50,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:04:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1f67b3bb-5319-4a07-9ade-01ca880572c7/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 [2018-12-01 20:04:50,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-01 20:04:50,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-01 20:04:50,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 20:04:50,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 20:04:50,432 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-01 20:04:50,432 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-01 20:04:50,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-01 20:04:50,432 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-01 20:04:50,509 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 20:04:50,509 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-01 20:04:50,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 08:04:50 BoogieIcfgContainer [2018-12-01 20:04:50,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 20:04:50,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-01 20:04:50,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-01 20:04:50,513 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-01 20:04:50,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 08:04:50" (1/3) ... [2018-12-01 20:04:50,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fb3823d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 08:04:50, skipping insertion in model container [2018-12-01 20:04:50,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:04:50" (2/3) ... [2018-12-01 20:04:50,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fb3823d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 08:04:50, skipping insertion in model container [2018-12-01 20:04:50,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 08:04:50" (3/3) ... [2018-12-01 20:04:50,515 INFO L112 eAbstractionObserver]: Analyzing ICFG sum01_true-unreach-call_true-termination.i [2018-12-01 20:04:50,521 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-01 20:04:50,525 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-01 20:04:50,533 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-01 20:04:50,554 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 20:04:50,554 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-01 20:04:50,554 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-01 20:04:50,555 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-01 20:04:50,555 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 20:04:50,555 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 20:04:50,555 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-01 20:04:50,555 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 20:04:50,555 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-01 20:04:50,567 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-12-01 20:04:50,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-01 20:04:50,570 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 20:04:50,570 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 20:04:50,571 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 20:04:50,574 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 20:04:50,575 INFO L82 PathProgramCache]: Analyzing trace with hash 579653156, now seen corresponding path program 1 times [2018-12-01 20:04:50,576 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 20:04:50,576 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 20:04:50,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 20:04:50,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 20:04:50,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 20:04:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 20:04:50,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 20:04:50,640 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 20:04:50,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-01 20:04:50,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-01 20:04:50,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-01 20:04:50,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-01 20:04:50,652 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-12-01 20:04:50,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 20:04:50,663 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2018-12-01 20:04:50,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-01 20:04:50,663 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-12-01 20:04:50,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 20:04:50,668 INFO L225 Difference]: With dead ends: 30 [2018-12-01 20:04:50,668 INFO L226 Difference]: Without dead ends: 13 [2018-12-01 20:04:50,670 INFO L631 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 [2018-12-01 20:04:50,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-12-01 20:04:50,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-12-01 20:04:50,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-12-01 20:04:50,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-12-01 20:04:50,689 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-12-01 20:04:50,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 20:04:50,690 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-12-01 20:04:50,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-01 20:04:50,690 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-12-01 20:04:50,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-01 20:04:50,690 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 20:04:50,690 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 20:04:50,690 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 20:04:50,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 20:04:50,691 INFO L82 PathProgramCache]: Analyzing trace with hash 574112030, now seen corresponding path program 1 times [2018-12-01 20:04:50,691 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 20:04:50,691 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 20:04:50,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 20:04:50,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 20:04:50,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 20:04:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 20:04:50,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 20:04:50,749 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 20:04:50,749 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-01 20:04:50,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-01 20:04:50,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-01 20:04:50,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-01 20:04:50,751 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2018-12-01 20:04:50,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 20:04:50,772 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-12-01 20:04:50,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-01 20:04:50,772 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-12-01 20:04:50,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 20:04:50,773 INFO L225 Difference]: With dead ends: 19 [2018-12-01 20:04:50,773 INFO L226 Difference]: Without dead ends: 14 [2018-12-01 20:04:50,773 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-01 20:04:50,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-12-01 20:04:50,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-12-01 20:04:50,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-12-01 20:04:50,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-12-01 20:04:50,776 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-12-01 20:04:50,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 20:04:50,776 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-12-01 20:04:50,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-01 20:04:50,776 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-12-01 20:04:50,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-01 20:04:50,776 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 20:04:50,776 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 20:04:50,776 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 20:04:50,777 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 20:04:50,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1164206820, now seen corresponding path program 1 times [2018-12-01 20:04:50,777 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 20:04:50,777 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 20:04:50,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 20:04:50,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 20:04:50,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 20:04:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 20:04:50,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 20:04:50,903 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 20:04:50,903 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1f67b3bb-5319-4a07-9ade-01ca880572c7/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 [2018-12-01 20:04:50,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 20:04:50,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 20:04:50,927 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 20:04:51,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 20:04:51,035 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 20:04:51,035 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2018-12-01 20:04:51,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-01 20:04:51,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-01 20:04:51,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2018-12-01 20:04:51,036 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-12-01 20:04:51,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 20:04:51,118 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2018-12-01 20:04:51,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-01 20:04:51,118 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-12-01 20:04:51,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 20:04:51,119 INFO L225 Difference]: With dead ends: 24 [2018-12-01 20:04:51,119 INFO L226 Difference]: Without dead ends: 18 [2018-12-01 20:04:51,120 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2018-12-01 20:04:51,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-12-01 20:04:51,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-12-01 20:04:51,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-12-01 20:04:51,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-12-01 20:04:51,123 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 13 [2018-12-01 20:04:51,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 20:04:51,124 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-12-01 20:04:51,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-01 20:04:51,124 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-12-01 20:04:51,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-01 20:04:51,124 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 20:04:51,124 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 20:04:51,125 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 20:04:51,125 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 20:04:51,125 INFO L82 PathProgramCache]: Analyzing trace with hash -2033115496, now seen corresponding path program 2 times [2018-12-01 20:04:51,125 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 20:04:51,125 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 20:04:51,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 20:04:51,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 20:04:51,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 20:04:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 20:04:51,237 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-01 20:04:51,238 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 20:04:51,238 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1f67b3bb-5319-4a07-9ade-01ca880572c7/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 20:04:51,244 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-01 20:04:51,250 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-01 20:04:51,251 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 20:04:51,252 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 20:04:51,362 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 20:04:51,378 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 20:04:51,378 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 18 [2018-12-01 20:04:51,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-01 20:04:51,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-01 20:04:51,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2018-12-01 20:04:51,379 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 18 states. [2018-12-01 20:04:51,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 20:04:51,582 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2018-12-01 20:04:51,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-12-01 20:04:51,583 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 17 [2018-12-01 20:04:51,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 20:04:51,583 INFO L225 Difference]: With dead ends: 21 [2018-12-01 20:04:51,583 INFO L226 Difference]: Without dead ends: 0 [2018-12-01 20:04:51,583 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2018-12-01 20:04:51,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-01 20:04:51,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-01 20:04:51,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-01 20:04:51,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-01 20:04:51,584 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-12-01 20:04:51,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 20:04:51,584 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-01 20:04:51,584 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-12-01 20:04:51,584 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-01 20:04:51,584 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-01 20:04:51,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-01 20:04:51,636 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-01 20:04:51,636 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-01 20:04:51,636 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-01 20:04:51,636 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-01 20:04:51,636 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-01 20:04:51,636 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-01 20:04:51,637 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 11 18) the Hoare annotation is: true [2018-12-01 20:04:51,637 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 11 18) no Hoare annotation was computed. [2018-12-01 20:04:51,637 INFO L448 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2018-12-01 20:04:51,637 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 11 18) no Hoare annotation was computed. [2018-12-01 20:04:51,637 INFO L448 ceAbstractionStarter]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2018-12-01 20:04:51,637 INFO L444 ceAbstractionStarter]: At program point L14-3(lines 14 16) the Hoare annotation is: (or (let ((.cse1 (* 2 main_~i~0)) (.cse0 (+ main_~sn~0 2))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (< main_~sn~0 (+ (* 2 main_~n~0) 1)))) (and (= main_~i~0 1) (= main_~sn~0 0))) [2018-12-01 20:04:51,637 INFO L444 ceAbstractionStarter]: At program point L14-4(lines 14 16) the Hoare annotation is: (or (let ((.cse0 (* 2 main_~n~0))) (and (<= .cse0 main_~sn~0) (< main_~sn~0 (+ .cse0 1)))) (= main_~sn~0 0)) [2018-12-01 20:04:51,637 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2018-12-01 20:04:51,637 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2018-12-01 20:04:51,638 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2018-12-01 20:04:51,638 INFO L448 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2018-12-01 20:04:51,638 INFO L448 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2018-12-01 20:04:51,638 INFO L448 ceAbstractionStarter]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2018-12-01 20:04:51,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 08:04:51 BoogieIcfgContainer [2018-12-01 20:04:51,647 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-01 20:04:51,648 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 20:04:51,648 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 20:04:51,648 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 20:04:51,648 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 08:04:50" (3/4) ... [2018-12-01 20:04:51,651 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-01 20:04:51,656 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-01 20:04:51,656 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-01 20:04:51,656 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-12-01 20:04:51,658 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-01 20:04:51,659 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-01 20:04:51,659 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-01 20:04:51,684 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_1f67b3bb-5319-4a07-9ade-01ca880572c7/bin-2019/uautomizer/witness.graphml [2018-12-01 20:04:51,685 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 20:04:51,685 INFO L168 Benchmark]: Toolchain (without parser) took 1460.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 956.0 MB in the beginning and 906.6 MB in the end (delta: 49.4 MB). Peak memory consumption was 178.4 MB. Max. memory is 11.5 GB. [2018-12-01 20:04:51,686 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 20:04:51,686 INFO L168 Benchmark]: CACSL2BoogieTranslator took 121.14 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 945.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-01 20:04:51,687 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.08 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 20:04:51,687 INFO L168 Benchmark]: Boogie Preprocessor took 11.09 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 20:04:51,687 INFO L168 Benchmark]: RCFGBuilder took 140.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -159.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2018-12-01 20:04:51,688 INFO L168 Benchmark]: TraceAbstraction took 1136.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 906.6 MB in the end (delta: 198.0 MB). Peak memory consumption was 198.0 MB. Max. memory is 11.5 GB. [2018-12-01 20:04:51,688 INFO L168 Benchmark]: Witness Printer took 37.13 ms. Allocated memory is still 1.2 GB. Free memory is still 906.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 20:04:51,690 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 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 121.14 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 945.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.08 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.09 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 140.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -159.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1136.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 906.6 MB in the end (delta: 198.0 MB). Peak memory consumption was 198.0 MB. Max. memory is 11.5 GB. * Witness Printer took 37.13 ms. Allocated memory is still 1.2 GB. Free memory is still 906.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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: 14]: Loop Invariant Derived loop invariant: ((sn + 2 <= 2 * i && 2 * i <= sn + 2) && sn < 2 * n + 1) || (i == 1 && sn == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. SAFE Result, 1.0s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 47 SDtfs, 10 SDslu, 128 SDs, 0 SdLazy, 163 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 12 PreInvPairs, 21 NumberOfFragments, 52 HoareAnnotationTreeSize, 12 FomulaSimplifications, 61 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 100 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 6056 SizeOfPredicates, 6 NumberOfNonLiveVariables, 80 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 4/20 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...