./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig1_false-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_4f1b61ff-54b5-44f8-898d-25d68fe3dafe/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_4f1b61ff-54b5-44f8-898d-25d68fe3dafe/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_4f1b61ff-54b5-44f8-898d-25d68fe3dafe/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_4f1b61ff-54b5-44f8-898d-25d68fe3dafe/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig1_false-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_4f1b61ff-54b5-44f8-898d-25d68fe3dafe/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_4f1b61ff-54b5-44f8-898d-25d68fe3dafe/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash bbffee41c5a3e36a7439f4e96877154fc3cf2a16 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-01 14:57:30,387 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 14:57:30,388 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 14:57:30,394 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 14:57:30,395 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 14:57:30,395 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 14:57:30,396 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 14:57:30,397 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 14:57:30,398 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 14:57:30,399 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 14:57:30,399 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 14:57:30,399 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 14:57:30,400 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 14:57:30,400 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 14:57:30,401 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 14:57:30,401 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 14:57:30,402 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 14:57:30,403 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 14:57:30,404 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 14:57:30,405 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 14:57:30,406 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 14:57:30,406 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 14:57:30,408 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 14:57:30,408 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 14:57:30,408 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 14:57:30,409 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 14:57:30,409 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 14:57:30,409 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 14:57:30,410 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 14:57:30,411 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 14:57:30,411 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 14:57:30,411 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 14:57:30,411 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 14:57:30,411 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 14:57:30,412 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 14:57:30,412 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 14:57:30,413 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_4f1b61ff-54b5-44f8-898d-25d68fe3dafe/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-12-01 14:57:30,421 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 14:57:30,421 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 14:57:30,421 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 14:57:30,422 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 14:57:30,422 INFO L133 SettingsManager]: * Use SBE=true [2018-12-01 14:57:30,422 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-01 14:57:30,422 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-01 14:57:30,422 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-01 14:57:30,422 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-01 14:57:30,423 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-01 14:57:30,423 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-01 14:57:30,423 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 14:57:30,423 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-01 14:57:30,423 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 14:57:30,423 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 14:57:30,423 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-01 14:57:30,424 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-01 14:57:30,424 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-01 14:57:30,424 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 14:57:30,424 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-01 14:57:30,424 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 14:57:30,424 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-01 14:57:30,424 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 14:57:30,424 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 14:57:30,425 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-01 14:57:30,425 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 14:57:30,425 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-01 14:57:30,425 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-01 14:57:30,426 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-01 14:57:30,426 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_4f1b61ff-54b5-44f8-898d-25d68fe3dafe/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(F end) ) 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bbffee41c5a3e36a7439f4e96877154fc3cf2a16 [2018-12-01 14:57:30,444 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 14:57:30,453 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 14:57:30,456 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 14:57:30,457 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 14:57:30,457 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 14:57:30,458 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_4f1b61ff-54b5-44f8-898d-25d68fe3dafe/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig1_false-termination_true-no-overflow.c [2018-12-01 14:57:30,499 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4f1b61ff-54b5-44f8-898d-25d68fe3dafe/bin-2019/uautomizer/data/10f5717dc/a586528074af461b82abde969c3ee8f1/FLAGb68197701 [2018-12-01 14:57:30,786 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 14:57:30,787 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_4f1b61ff-54b5-44f8-898d-25d68fe3dafe/sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig1_false-termination_true-no-overflow.c [2018-12-01 14:57:30,790 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4f1b61ff-54b5-44f8-898d-25d68fe3dafe/bin-2019/uautomizer/data/10f5717dc/a586528074af461b82abde969c3ee8f1/FLAGb68197701 [2018-12-01 14:57:30,798 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_4f1b61ff-54b5-44f8-898d-25d68fe3dafe/bin-2019/uautomizer/data/10f5717dc/a586528074af461b82abde969c3ee8f1 [2018-12-01 14:57:30,800 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 14:57:30,801 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 14:57:30,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 14:57:30,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 14:57:30,803 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 14:57:30,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 02:57:30" (1/1) ... [2018-12-01 14:57:30,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@432dabb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:30, skipping insertion in model container [2018-12-01 14:57:30,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 02:57:30" (1/1) ... [2018-12-01 14:57:30,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 14:57:30,818 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 14:57:30,897 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 14:57:30,899 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 14:57:30,907 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 14:57:30,914 INFO L195 MainTranslator]: Completed translation [2018-12-01 14:57:30,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:30 WrapperNode [2018-12-01 14:57:30,915 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 14:57:30,915 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 14:57:30,915 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 14:57:30,915 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 14:57:30,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:30" (1/1) ... [2018-12-01 14:57:30,923 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:30" (1/1) ... [2018-12-01 14:57:30,933 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 14:57:30,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 14:57:30,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 14:57:30,933 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 14:57:30,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:30" (1/1) ... [2018-12-01 14:57:30,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:30" (1/1) ... [2018-12-01 14:57:30,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:30" (1/1) ... [2018-12-01 14:57:30,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:30" (1/1) ... [2018-12-01 14:57:30,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:30" (1/1) ... [2018-12-01 14:57:30,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:30" (1/1) ... [2018-12-01 14:57:30,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:30" (1/1) ... [2018-12-01 14:57:30,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 14:57:30,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 14:57:30,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 14:57:30,944 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 14:57:30,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4f1b61ff-54b5-44f8-898d-25d68fe3dafe/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 14:57:31,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 14:57:31,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 14:57:31,073 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 14:57:31,073 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-12-01 14:57:31,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:57:31 BoogieIcfgContainer [2018-12-01 14:57:31,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 14:57:31,074 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-01 14:57:31,074 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-01 14:57:31,076 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-01 14:57:31,076 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-01 14:57:31,077 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.12 02:57:30" (1/3) ... [2018-12-01 14:57:31,077 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@21663a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.12 02:57:31, skipping insertion in model container [2018-12-01 14:57:31,077 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-01 14:57:31,077 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:30" (2/3) ... [2018-12-01 14:57:31,078 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@21663a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.12 02:57:31, skipping insertion in model container [2018-12-01 14:57:31,078 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-01 14:57:31,078 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:57:31" (3/3) ... [2018-12-01 14:57:31,079 INFO L375 chiAutomizerObserver]: Analyzing ICFG Urban-WST2013-Fig1_false-termination_true-no-overflow.c [2018-12-01 14:57:31,112 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 14:57:31,112 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-01 14:57:31,112 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-01 14:57:31,113 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-01 14:57:31,113 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 14:57:31,113 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 14:57:31,113 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-01 14:57:31,113 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 14:57:31,113 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-01 14:57:31,121 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2018-12-01 14:57:31,133 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-01 14:57:31,133 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 14:57:31,133 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 14:57:31,137 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-12-01 14:57:31,137 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-01 14:57:31,137 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-01 14:57:31,137 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2018-12-01 14:57:31,138 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-01 14:57:31,138 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 14:57:31,138 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 14:57:31,138 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-12-01 14:57:31,138 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-01 14:57:31,143 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~x~0;havoc main_~x~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 5#L18-2true [2018-12-01 14:57:31,143 INFO L796 eck$LassoCheckResult]: Loop: 5#L18-2true assume !!(main_~x~0 <= 10); 8#L18true assume main_~x~0 > 6;main_~x~0 := 2 + main_~x~0; 5#L18-2true [2018-12-01 14:57:31,146 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 14:57:31,146 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-12-01 14:57:31,147 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 14:57:31,148 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 14:57:31,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 14:57:31,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 14:57:31,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 14:57:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 14:57:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 14:57:31,205 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 14:57:31,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2018-12-01 14:57:31,205 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 14:57:31,205 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 14:57:31,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 14:57:31,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 14:57:31,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 14:57:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 14:57:31,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 14:57:31,212 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 14:57:31,212 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2018-12-01 14:57:31,212 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 14:57:31,212 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 14:57:31,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 14:57:31,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 14:57:31,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 14:57:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 14:57:31,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 14:57:31,245 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 14:57:31,246 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 14:57:31,246 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 14:57:31,246 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 14:57:31,246 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-01 14:57:31,246 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 14:57:31,246 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 14:57:31,246 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 14:57:31,247 INFO L131 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig1_false-termination_true-no-overflow.c_Iteration1_Loop [2018-12-01 14:57:31,247 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 14:57:31,247 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 14:57:31,260 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 14:57:31,265 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 14:57:31,271 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 14:57:31,324 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 14:57:31,325 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4f1b61ff-54b5-44f8-898d-25d68fe3dafe/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 14:57:31,328 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 14:57:31,328 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 14:57:31,348 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 14:57:31,349 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4f1b61ff-54b5-44f8-898d-25d68fe3dafe/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 14:57:31,351 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 14:57:31,351 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 14:57:31,366 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 14:57:31,366 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4f1b61ff-54b5-44f8-898d-25d68fe3dafe/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 14:57:31,369 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 14:57:31,369 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4f1b61ff-54b5-44f8-898d-25d68fe3dafe/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 14:57:31,386 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-01 14:57:31,386 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 14:57:31,390 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-01 14:57:31,403 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 14:57:31,403 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 14:57:31,403 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 14:57:31,403 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 14:57:31,403 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 14:57:31,403 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 14:57:31,403 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 14:57:31,403 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 14:57:31,403 INFO L131 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig1_false-termination_true-no-overflow.c_Iteration1_Loop [2018-12-01 14:57:31,403 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 14:57:31,403 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 14:57:31,404 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 14:57:31,409 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 14:57:31,411 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 14:57:31,455 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 14:57:31,458 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 14:57:31,459 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 14:57:31,460 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 14:57:31,460 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 14:57:31,460 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 14:57:31,460 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 14:57:31,464 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 14:57:31,464 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 14:57:31,471 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 14:57:31,471 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 14:57:31,472 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 14:57:31,472 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 14:57:31,472 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 14:57:31,472 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 14:57:31,474 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 14:57:31,474 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 14:57:31,481 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 14:57:31,481 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 14:57:31,482 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 14:57:31,482 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 14:57:31,482 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 14:57:31,483 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 14:57:31,483 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 14:57:31,483 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 14:57:31,483 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 14:57:31,489 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 14:57:31,493 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-01 14:57:31,493 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-01 14:57:31,495 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 14:57:31,495 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-01 14:57:31,495 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 14:57:31,496 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~x~0 + 11 Supporting invariants [] [2018-12-01 14:57:31,497 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-01 14:57:31,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 14:57:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 14:57:31,527 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 14:57:31,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 14:57:31,532 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 14:57:31,541 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 14:57:31,550 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-01 14:57:31,551 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2018-12-01 14:57:31,577 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 20 states and 28 transitions. Complement of second has 7 states. [2018-12-01 14:57:31,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-01 14:57:31,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-01 14:57:31,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2018-12-01 14:57:31,580 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 1 letters. Loop has 2 letters. [2018-12-01 14:57:31,581 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 14:57:31,581 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 3 letters. Loop has 2 letters. [2018-12-01 14:57:31,581 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 14:57:31,581 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 1 letters. Loop has 4 letters. [2018-12-01 14:57:31,581 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 14:57:31,582 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 28 transitions. [2018-12-01 14:57:31,583 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-01 14:57:31,585 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 8 states and 11 transitions. [2018-12-01 14:57:31,586 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2018-12-01 14:57:31,586 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-12-01 14:57:31,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2018-12-01 14:57:31,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-01 14:57:31,586 INFO L705 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-12-01 14:57:31,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2018-12-01 14:57:31,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-12-01 14:57:31,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-12-01 14:57:31,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2018-12-01 14:57:31,602 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-12-01 14:57:31,602 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-12-01 14:57:31,602 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-01 14:57:31,602 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2018-12-01 14:57:31,602 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-01 14:57:31,602 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 14:57:31,602 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 14:57:31,603 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-12-01 14:57:31,603 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-01 14:57:31,603 INFO L794 eck$LassoCheckResult]: Stem: 63#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0;havoc main_~x~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 64#L18-2 assume !!(main_~x~0 <= 10); 66#L18 [2018-12-01 14:57:31,603 INFO L796 eck$LassoCheckResult]: Loop: 66#L18 assume !(main_~x~0 > 6); 65#L18-2 assume !!(main_~x~0 <= 10); 66#L18 [2018-12-01 14:57:31,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 14:57:31,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2018-12-01 14:57:31,603 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 14:57:31,603 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 14:57:31,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 14:57:31,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 14:57:31,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 14:57:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 14:57:31,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 14:57:31,606 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 14:57:31,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2018-12-01 14:57:31,607 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 14:57:31,607 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 14:57:31,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 14:57:31,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 14:57:31,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 14:57:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 14:57:31,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 14:57:31,610 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 14:57:31,611 INFO L82 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 1 times [2018-12-01 14:57:31,611 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 14:57:31,611 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 14:57:31,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 14:57:31,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 14:57:31,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 14:57:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 14:57:31,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 14:57:31,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.12 02:57:31 BoogieIcfgContainer [2018-12-01 14:57:31,638 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-01 14:57:31,638 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 14:57:31,638 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 14:57:31,639 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 14:57:31,639 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:57:31" (3/4) ... [2018-12-01 14:57:31,641 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2018-12-01 14:57:31,663 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_4f1b61ff-54b5-44f8-898d-25d68fe3dafe/bin-2019/uautomizer/witness.graphml [2018-12-01 14:57:31,663 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 14:57:31,663 INFO L168 Benchmark]: Toolchain (without parser) took 863.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 956.0 MB in the beginning and 1.0 GB in the end (delta: -73.6 MB). Peak memory consumption was 62.2 MB. Max. memory is 11.5 GB. [2018-12-01 14:57:31,664 INFO L168 Benchmark]: CDTParser took 0.15 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 14:57:31,665 INFO L168 Benchmark]: CACSL2BoogieTranslator took 113.78 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 14:57:31,665 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.50 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 14:57:31,665 INFO L168 Benchmark]: Boogie Preprocessor took 10.50 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 14:57:31,666 INFO L168 Benchmark]: RCFGBuilder took 129.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -172.9 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2018-12-01 14:57:31,666 INFO L168 Benchmark]: BuchiAutomizer took 564.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 81.7 MB). Peak memory consumption was 81.7 MB. Max. memory is 11.5 GB. [2018-12-01 14:57:31,667 INFO L168 Benchmark]: Witness Printer took 24.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-12-01 14:57:31,669 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 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 113.78 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 17.50 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 10.50 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 129.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -172.9 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 564.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 81.7 MB). Peak memory consumption was 81.7 MB. Max. memory is 11.5 GB. * Witness Printer took 24.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * x + 11 and consists of 5 locations. The remainder module has 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.5s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 4 SDtfs, 7 SDslu, 6 SDs, 0 SdLazy, 10 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax192 hnf100 lsp51 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq146 hnf94 smp100 dnf100 smp100 tf111 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 11ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 18]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@34723671=0, \result=0, x=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 18]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L15] int x; [L16] x = __VERIFIER_nondet_int() [L17] COND TRUE x <= 10 Loop: [L18] COND FALSE !(x > 6) [L17] COND TRUE x <= 10 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...